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17 pages, 1080 KiB  
Article
Beyond the Myths: Brazilian Consumer Perceptions of Functional Food
by Luis Gustavo Saboia Ponte, Suliene França Ribeiro, Adriane Elisabete Costa Antunes, Rosangela Maria Neves Bezerra and Diogo Thimoteo da Cunha
Foods 2024, 13(24), 4161; https://doi.org/10.3390/foods13244161 (registering DOI) - 22 Dec 2024
Abstract
The growing consumer interest in functional foods and healthy eating can unfortunately lead to the spread of misinformation and the belief in food-related myths. This study analyzed Brazilian consumers’ perceptions and beliefs about facts and myths regarding functional foods, focusing on attitudes, reference [...] Read more.
The growing consumer interest in functional foods and healthy eating can unfortunately lead to the spread of misinformation and the belief in food-related myths. This study analyzed Brazilian consumers’ perceptions and beliefs about facts and myths regarding functional foods, focusing on attitudes, reference groups, and sociocultural factors affecting their perception. A theoretical model was developed, incorporating constructs such as attitudes (reward, trust, necessity, safety), beliefs, and reference groups. Data from 600 participants in the Southeast (n = 300) and Northeast (n = 300) of Brazil were collected through online questionnaires, with responses measured on a five-point Likert scale. Myths (widely held ideas lacking scientific basis) and ‘facts’ (evidence-based information) regarding functional food were selected via literature review and validated by nutrition experts. Structural equation modeling revealed that perceived necessity and reward were positively associated with myths, while safety perception was negatively associated with myths. Reference groups and beliefs were positively associated with facts. Cluster analysis identified two consumer profiles: (1) safety-conscious individuals, who prioritize food safety, and (2) engaged critics, influenced by reference groups and actively seeking information. These findings highlight the importance of culturally tailored communication strategies for countering myths and promoting functional foods in Brazil. Regulatory bodies in Brazil must enhance oversight of health claims to build consumer trust and encourage informed choices, fostering mindful consumption habits. Full article
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<p>Proposed model.</p>
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<p>Final structural model.</p>
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19 pages, 7471 KiB  
Article
Single-Cell RNA Sequencing, Cell Communication, and Network Pharmacology Reveal the Potential Mechanism of Senecio scandens Buch.-Ham in Hepatocellular Carcinoma Inhibition
by Jiayi Jiang, Haitao Wu, Xikun Jiang, Qing Ou, Zhanpeng Gan, Fangfang Han and Yongming Cai
Pharmaceuticals 2024, 17(12), 1707; https://doi.org/10.3390/ph17121707 - 18 Dec 2024
Viewed by 221
Abstract
Background: Hepatocellular carcinoma (HCC), a prevalent form of primary liver malignancy, arises from liver-specific hepatocytes. Senecio scandens Buch.-Ham(Climbing senecio) is a bitter-tasting plant of the Compositae family with anti-tumor properties. This study aims to identify the molecular targets and pathways through which Climbing [...] Read more.
Background: Hepatocellular carcinoma (HCC), a prevalent form of primary liver malignancy, arises from liver-specific hepatocytes. Senecio scandens Buch.-Ham(Climbing senecio) is a bitter-tasting plant of the Compositae family with anti-tumor properties. This study aims to identify the molecular targets and pathways through which Climbing senecio regulates HCC. Methods: Active ingredients of Climbing senecio were collected from four online databases and mapped to relevant target databases to obtain predicted targets. After recognizing the key pathways through which Climbing senecio acts in HCC. Gene expression data from GSE54238 Underwent differential expression and weighted gene correlation network analyses to identify HCC-related genes. The “Climbing senecio-Hepatocellular Carcinoma Targets” network was constructed using Cytoscape 3.10.1 software, followed by topology analysis to identify core genes. The expression and distribution of key targets were evaluated, and the differential expression of each key target between normal and diseased samples was calculated. Moreover, single-cell data from the Gene Expression Omnibus (GSE202642) were used to assess the distribution of Climbing senecio’s bioactive targets within major HCC clusters. An intersection analysis of these clusters with pharmacological targets and HCC-related genes identified Climbing senecio’s primary targets for this disease. Cell communication, receiver operating characteristic (ROC)analysis, survival analysis, immune filtration analysis, and molecular docking studies were conducted for detailed characterization. Results: Eleven components of Climbing senecio were identified, along with 520 relevant targets, 300 differentially expressed genes, and 3765 co-expression module genes associated with HCC. AKR1B1, CA2, FOS, CXCL2, SRC, ABCC1, and PLIN1 were identified within the intersection of HCC-related genes and Climbing senecio targets. TGFβ, IL-1, VEGF, and CXCL were identified as significant factors in the onset and progression of HCC. These findings underscore the anti-HCC potential and mode of action of Climbing senecio, providing insights into multi-targeted treatment approaches for HCC. Conclusions: This study revealed that Climbing senecio may target multiple pathways and genes in the process of regulating HCC and exert potential drug effects through a multi-target mechanism, which provides a new idea for the treatment of HCC. However, the research is predicated on network database analysis and bioinformatics, offering insights into HCC therapeutic potential while emphasizing the need for further validation. Full article
(This article belongs to the Section Pharmacology)
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<p>Identification and analysis of targets for <span class="html-italic">Senecio scandens</span> Buch.-Ham (Climbing senecio). (<b>a</b>) Venn diagram of Climbing senecio targets across TCMSP, TargetNet, Binding DB, and SwissTargetPrediction. (<b>b</b>) Enrichment analysis of Climbing senecio targets using the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway database. (<b>c</b>) Comprehensive Gene Ontology (GO) enrichment analysis for Climbing senecio, including categories of biological processes (BP), cellular components (CC), and molecular functions (MF).</p>
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<p>Differentially expressed genes (DEGs) in the GSE54238 dataset. (<b>a</b>) The heatmap displaying the expression profiles of DEGs. (<b>b</b>) Volcano plot illustrating the distribution of DEGs. (<b>c</b>,<b>d</b>) Gene set enrichment analysis (GSEA) based on KEGG pathways.</p>
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<p>Weighted gene co-expression network analysis (WGCNA) of enrichment values. (<b>a</b>) Soft threshold selection. (<b>b</b>) WGCNA cluster dendrogram. (<b>c</b>) Gene module separation and cluster dendrogram in WGCNA, with different colors representing different modules. (<b>d</b>) Inter-module correlation. (<b>e</b>) Module-trait relationship analysis diagram for 17 modules. (<b>f</b>) Relationship between gene significance and brown module memberships.</p>
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<p>Key target identification and functional analysis. (<b>a</b>) The intersection of Climbing senecio-related genes with DEGs and WGCNA brown module genes. (<b>b</b>) Intersection of drug targets with Climbing senecio-related genes. (<b>c</b>) The Climbing senecio–HCC protein interaction network generated in Cytoscape3.10.1 showing Climbing senecio-related genes and drug targets. Green and light pink indicate both Climbing senecio-related genes and drug targets; light green indicates drug targets; light pink indicates Climbing senecio-related genes. (<b>d</b>) KEGG pathway analysis of key genes. (<b>e</b>) GO analysis of the primary cluster.</p>
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<p>Single-cell overview in HCC. (<b>a</b>) Unified clustering into 17 clusters. (<b>b</b>) Bubble charts at each gene table level. (<b>c</b>) Identification of nine clusters. (<b>d</b>) Proposed pathway of Climbing senecio’s action on HCC.</p>
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<p>Expression and distribution of the key cluster with receiver operating characteristic (ROC) curve analysis. (<b>a</b>) A boxplot depicting the differential expression of pivotal genes between normal and control tissues within the GSE54238. (<b>b</b>) The crucial targets are determined by the overlap of key clusters with genes associated with Climbing senecio and targets linked to HCC. (<b>c</b>) ROC curve analysis of three crucial targets.</p>
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<p>Key pathways in intercellular communication analysis. (<b>a</b>) Cellular interaction network. (<b>b</b>) Interaction between cell types. (<b>c</b>) Network of TGF-β, IL-1, CXCL, and VEGF signaling pathways.</p>
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<p>Immune filtration analysis of <span class="html-italic">AKR1B1</span>, <span class="html-italic">CA2</span>, <span class="html-italic">FOS</span>, <span class="html-italic">CXCL2</span>, <span class="html-italic">SRC</span>, <span class="html-italic">ABCC1</span>, and <span class="html-italic">PLIN1</span>. (<b>a</b>) Stacked column diagram of 20 types of immune cell infiltration in the GSE54238 dataset. (<b>b</b>) A box diagram illustrating the variation in infiltration levels of different immune cell types between diseased and normal samples. The “ns” (not significant) means there is no statistically significant difference. (<b>c</b>) A heatmap depicting the correlations between immune cell infiltration and the expression levels of <span class="html-italic">AKR1B1</span>, <span class="html-italic">CA2</span>, <span class="html-italic">FOS</span>, <span class="html-italic">CXCl2</span>, <span class="html-italic">SRC</span>, <span class="html-italic">ABCC1</span>, and <span class="html-italic">PLIN1</span>.</p>
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<p>Molecular docking analysis of Climbing senecio’s active ingredients with target proteins. (<b>a</b>) Visual docking diagram of Climbing senecio–<span class="html-italic">SRC</span> interaction. (<b>b</b>) Visual docking diagram of Climbing senecio–<span class="html-italic">FOS</span>.</p>
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24 pages, 1557 KiB  
Article
Decoding Consumer Minds in the Age of Online Accommodation Reviews: A Client Profiling Approach
by Patricia Elena Ciocoiu, Ioana Simona Ivasciuc and Ana Ispas
Sustainability 2024, 16(24), 11085; https://doi.org/10.3390/su162411085 - 18 Dec 2024
Viewed by 341
Abstract
In the era of online accommodation reviews, understanding the consumer mind is essential for the hospitality industry. This study seeks to profile consumers based on their reservation decisions made after reviewing online feedback and to explore the complex relationship between consumer perceptions and [...] Read more.
In the era of online accommodation reviews, understanding the consumer mind is essential for the hospitality industry. This study seeks to profile consumers based on their reservation decisions made after reviewing online feedback and to explore the complex relationship between consumer perceptions and their decision-making processes. To lay a solid foundation for this research, a thorough bibliometric analysis was conducted to map the existing literature and identify key trends in the field. Data were collected using a non-probability convenience sampling method through an online survey targeting Romanian residents. Performing a hierarchical cluster analysis, followed by a K-means cluster analysis, distinct consumer segments with varying levels of trust and responsiveness were identified. The four primary clusters are Young Risk-Averse Planners, Trust-Oriented Quality Seekers, Skeptical Detail Seekers and Independent Value Seekers. Each segment displayed unique preferences regarding the types of reviews they value and their influence on booking decisions. These findings highlight the need for hotel managers and marketers to develop tailored strategies that cater to the diverse needs of consumers, enhancing service delivery and promoting sustainable tourism practices. This research provides valuable insights into the dynamics of online reviews and stresses the importance of understanding consumer perceptions in navigating the complexities of today’s hospitality industry. Full article
(This article belongs to the Special Issue Sustainable Tourism Management and Marketing)
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<p>Trends of publications and citations about online reviews in decision-making process for accommodation booking.</p>
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<p>Map of the occurrences and links for terms related to the importance of online reviews in decision-making process for accommodation booking. Source: Authors’ processing in VOS viewer, using Web of Sciences indexed articles.</p>
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<p>Methodological diagram. Source: authors’ processing.</p>
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<p>Dendogram using Ward linkage. Source: authors’ processing in SPSS.</p>
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24 pages, 5441 KiB  
Article
What Is the Attitude of Romanian Smallholders Towards a Ground Mole Infestation? A Study Using Topic Modelling and Sentiment Analysis on Social Media and Blog Discussions
by Alina Delia Călin and Adriana Mihaela Coroiu
Animals 2024, 14(24), 3611; https://doi.org/10.3390/ani14243611 - 14 Dec 2024
Viewed by 479
Abstract
In this paper, we analyse the attitudes and sentiments of Romanian smallholders towards mole infestations, as expressed in online contexts. A corpus of texts on the topic of ground moles and how to get rid of them was collected from social media and [...] Read more.
In this paper, we analyse the attitudes and sentiments of Romanian smallholders towards mole infestations, as expressed in online contexts. A corpus of texts on the topic of ground moles and how to get rid of them was collected from social media and blog thread discussions. The texts were analysed using topic modelling, clustering, and sentiment analysis, revealing both negative and positive sentiments and attitudes. The methods used by farmers when dealing with ground moles involve both eco-friendly repellent solutions and toxic substances and pesticides. Even well-intentioned farmers are discouraged by crop and lawn damage, resorting to environmentally aggressive solutions. The study shows that the relationship between humans and moles could be improved by active education on effective ecological agricultural approaches. Full article
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<p>Overground dead mole pictured in Făget Forest, Cluj, Romania, October 2023 (<b>left</b>) and in Dumbrava Forest, Sibiu, Romania, August 2024 (<b>right</b>). Photo credit Mihai Cuibus.</p>
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<p>Molehills in Dumbrava Forest, Sibiu, Romania, August 2024.</p>
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<p>Wordcloud of the most frequent terms.</p>
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<p>Distribution per year of the dataset posts.</p>
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<p>The word length frequency (blue) of the dataset posts and standard distribution curve (red).</p>
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<p>BerTOPIC similarity matrix.</p>
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<p>BerTOPIC topics and top frequency words.</p>
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<p>The intertopic distance map.</p>
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<p>Number of clusters identified automatically using the elbow method.</p>
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<p>The clusters’ representation: each cluster is represented with one colour, and the centroid is marked with an X in the middle of each cluster.</p>
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<p>The clusters’ distribution.</p>
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<p>The clusters representation for K-Means++. The centroids of the each cluster is marked with an X.</p>
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<p>Words frequencies in the clusters.</p>
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<p>Sentiment polarity with Textblob, Vader, and Flair for the entire dataset.</p>
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<p>Emotions using Roberta. Colour codes: orange—negative; green—positive; yellow—neutral.</p>
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<p>Top-scoring emotions based on Roberta across the dataset.</p>
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<p>Emotion map using Distilbert for each of the 1402 posts.</p>
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<p>Emotion distribution based on Distilbert across the dataset.</p>
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25 pages, 1544 KiB  
Article
Understanding the Perceptions of Organic Products in Romania: Challenges and Opportunities for Market Growth in the Context of the European Green Deal
by Iulia Sorina Dan and Ionel Mugurel Jitea
Agriculture 2024, 14(12), 2292; https://doi.org/10.3390/agriculture14122292 - 13 Dec 2024
Viewed by 517
Abstract
The rising interest in organic products aligns with a global push for sustainable development, notably through initiatives like the European Green Deal introduced by the European Commission. In Romania, although organic farming and product consumption are increasing, they remain well below the EU [...] Read more.
The rising interest in organic products aligns with a global push for sustainable development, notably through initiatives like the European Green Deal introduced by the European Commission. In Romania, although organic farming and product consumption are increasing, they remain well below the EU averages. This study explores Romanian consumers’ and non-consumers’ perceptions and attitudes toward organic products in a contemporary context shaped by post-COVID-19 adjustments and geopolitical tensions. By developing consumer profiles, the study provides insights to help manufacturers and sellers diversify their strategies such as to meet the EU Green Deal targets. Data were collected from 833 respondents using an online survey and then analyzed with SPSS 23.0. The sample is more representative of young, well-educated, urban residents and, therefore, not fully representative of the entire Romanian population. Descriptive statistics revealed socio-demographic profiles and means for variables reflecting consumer attitudes toward organic products. Exploratory factor analysis with Varimax rotation identified core dimensions among variables and cluster analysis was used to identify different consumer groups. Findings show that typical organic product consumers are younger, well educated, and value quality, reflecting a commitment to sustainable choices. However, high prices are the main barrier to market growth, deterring many potential consumers. Additionally, there is considerable skepticism about organic foods, with doubts about their advantages over conventional products, and a lack of information limits consumer understanding of organic product benefits. These obstacles hinder broader adoption of organic foods in Romania. Future public policies should better support organic market chains to promote the positive externalities of such products such as to meet the ambitious EU Green Deal targets. Full article
(This article belongs to the Special Issue Agricultural Markets and Agrifood Supply Chains)
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<p>Reasons for consumption. Source: authors’ research results.</p>
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<p>Frequency of purchase of different organically certified products. Source: authors’ research results.</p>
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<p>The place of purchase of organic products. Source: author’s projection.</p>
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<p>The importance of information in the purchasing process. Source: authors’ research results.</p>
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<p>Consumer perception regarding organic products. Source: authors’ research results.</p>
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<p>Barriers in the consumption of certified organic products. Source: authors’ research results.</p>
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<p>Respondents’ willingness to purchase organic products if the price were to decrease. Source: authors’ research results.</p>
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16 pages, 976 KiB  
Article
Differences in Perceived Stress, Subjective Well-Being, and Psychosocial Variables by Game Use Type
by Goo-Churl Jeong, Kwanhyeong Kim and Bee Kim
Behav. Sci. 2024, 14(12), 1178; https://doi.org/10.3390/bs14121178 - 10 Dec 2024
Viewed by 462
Abstract
This study examined the differences in perceived stress, subjective well-being, psychosocial variables, and differences in parents’ parenting styles according to game use type among Korean adults. The study involved 300 participants in their 20s and 30s, a demographic typically associated with frequent gaming. [...] Read more.
This study examined the differences in perceived stress, subjective well-being, psychosocial variables, and differences in parents’ parenting styles according to game use type among Korean adults. The study involved 300 participants in their 20s and 30s, a demographic typically associated with frequent gaming. Data were collected through an online survey company, and analyses were conducted using SPSS 25.0, including correlation, cluster, ANOVA, and correspondence analyses. The results showed that the general and adaptive game use groups had significantly lower levels of perceived stress than the maladaptive and risky game use groups. Additionally, the adaptive game use group exhibited significantly higher subjective well-being than the maladaptive game use group. In terms of psychosocial characteristics, except for the general game use group, none of the other groups considered online gaming as addictive. Parenting styles showed significant differences in relation to game use in adulthood. Notably, democratic parenting styles were associated with the general and adaptive game use groups, whereas neglectful parenting styles were linked to the risky game use group. These findings suggest that the risky game use group is as vulnerable to stress as the maladaptive game use group, emphasizing the need for targeted screening and social attention for the risky game use group. Full article
(This article belongs to the Section Health Psychology)
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<p>Hierarchical cluster analysis results: (<b>a</b>) Agglomeration schedule coefficients plot; (<b>b</b>) Dendrogram from hierarchical cluster analysis.</p>
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<p>Final cluster centroid and game use type.</p>
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<p>Biplot between perceived parenting style and game use type.</p>
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25 pages, 5565 KiB  
Article
Unsupervised Modelling of E-Customers’ Profiles: Multiple Correspondence Analysis with Hierarchical Clustering of Principal Components and Machine Learning Classifiers
by Vijoleta Vrhovac, Marko Orošnjak, Kristina Ristić, Nemanja Sremčev, Mitar Jocanović, Jelena Spajić and Nebojša Brkljač
Mathematics 2024, 12(23), 3794; https://doi.org/10.3390/math12233794 - 30 Nov 2024
Viewed by 537
Abstract
The rapid growth of e-commerce has transformed customer behaviors, demanding deeper insights into how demographic factors shape online user preferences. This study performed a threefold analysis to understand the impact of these changes. Firstly, this study investigated how demographic factors (e.g., age, gender, [...] Read more.
The rapid growth of e-commerce has transformed customer behaviors, demanding deeper insights into how demographic factors shape online user preferences. This study performed a threefold analysis to understand the impact of these changes. Firstly, this study investigated how demographic factors (e.g., age, gender, education) influence e-customer preferences in Serbia. From a sample of n = 906 respondents, conditional dependencies between demographics and user preferences were tested. From a hypothetical framework of 24 tested hypotheses, this study successfully rejected 8/24 (with p < 0.05), suggesting a high association between demographics with purchase frequency and reasons for quitting the purchase. However, although the reported test statistics suggested an association, understanding how interactions between categories shape e-customer profiles was still required. Therefore, the second part of this study considers an MCA-HCPC (Multiple Correspondence Analysis with Hierarchical Clustering on Principal Components) to identify user profiles. The analysis revealed three main clusters: (1) young, female, unemployed e-customers driven mainly by customer reviews; (2) retirees and older adults with infrequent purchases, hesitant to buy without experiencing the product in person; and (3) employed, highly educated, male, middle-aged adults who prioritize fast and accurate delivery over price. In the third stage, the clusters are used as labels for Machine Learning (ML) classification tasks. Particularly, Gradient Boosting Machine (GBM), Decision Tree (DT), k-Nearest Neighbors (kNN), Gaussian Naïve Bayes (GNB), Random Forest (RF), and Support Vector Machine (SVM) were used. The results suggested that GBM, RF, and SVM had high classification performance in identifying user profiles. Lastly, after performing Permutation Feature Importance (PFI), the findings suggested that age, work status, education, and income are the main determinants of shaping e-customer profiles and developing marketing strategies. Full article
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<p>The data workflow framework.</p>
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<p>The research hypothetical framework.</p>
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<p>Descriptive statistics of demographic data (<b>top row</b>) and user preferences (<b>bottom row</b>).</p>
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<p>MCA analysis including (<b>A</b>) <span class="html-italic">η</span><sup>2</sup> coefficient of categories concerning PCs; (<b>B</b>) MCA biplot of respondents (grey color) and class categories of categorical variables; (<b>C</b>) v-test score of class categories (<span class="html-italic">z</span> &gt; 1.96, <span class="html-italic">z</span> &lt; −1.96).</p>
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<p>Machine Learning Classification of (<b>A</b>) Receiver Operating Characteristic Curve representing Cluster 1 (red), Cluster 2 (green) and Cluster 3 (blue), and (<b>B</b>) Permutation Feature Importance estimated by Mean Dropout Loss.</p>
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<p>The purchase frequencies with corresponding demographics are (<b>A</b>) age, (<b>B</b>) education, (<b>C</b>) work status, and (<b>D</b>) income.</p>
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<p>The frequencies of reasons for quitting (RFQ) variable and corresponding demographics (<b>A</b>) residence, (<b>B</b>) income, (<b>C</b>) work status. The frequencies of MIPBREP (most important property before repeating the purchase) and demographic (<b>D</b>) income.</p>
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<p>Agglomerative Hierarchical Clustering of observations represented via (<b>A</b>) a dendrogram with observations (<span class="html-italic">x</span>-axis) and distance measured (<span class="html-italic">y</span>-axis); and (<b>B</b>) identified clusters based on the first two Principal Components.</p>
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18 pages, 729 KiB  
Article
Dimensionality Reduction and Clustering Strategies for Label Propagation in Partial Discharge Data Sets
by Ronaldo F. Zampolo, Frederico H. R. Lopes, Rodrigo M. S. de Oliveira, Martim F. Fernandes and Victor Dmitriev
Energies 2024, 17(23), 5936; https://doi.org/10.3390/en17235936 - 26 Nov 2024
Viewed by 397
Abstract
Deep learning approaches have been successfully applied to perform automatic classification of phase-resolved partial discharge (PRPD) diagrams. Under the supervised learning paradigm, however, the performance of classifiers strongly depends on the availability of large and previously labeled data sets. Labeling is an intensive [...] Read more.
Deep learning approaches have been successfully applied to perform automatic classification of phase-resolved partial discharge (PRPD) diagrams. Under the supervised learning paradigm, however, the performance of classifiers strongly depends on the availability of large and previously labeled data sets. Labeling is an intensive and time-consuming labor, typically involving the manual annotation of a large number of data examples by an expert. In this work, we propose a label propagation algorithm applied to PRPD data sets, aiming to reduce the time necessary to manually label PRPDs. Our basic pipeline is composed of three phases: pre-processing, dimensionality reduction procedures, and clustering. Different configurations of the basic pipeline are tested by using PRPDs obtained from online measurements in hydrogenerators. The performance of each configuration is assessed by using the Silhouette, Caliński–Harabasz, and Davies–Bouldin scores. The clustering of the best three configurations is compared with annotated PRPDs by using the Fowlkes-Mallows index. Results suggest our strategy can substantially decrease the time for manual labeling. Full article
(This article belongs to the Special Issue Energy, Electrical and Power Engineering: 3rd Edition)
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Graphical abstract
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<p>The proposed label propagation strategy.</p>
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<p>Effects of pre-processing on PRPDs: (<b>a</b>) original PRPD; (<b>b</b>) PRPD after amplitude scaling; (<b>c</b>) PRPD after amplitude scaling (detail); (<b>d</b>) scaled PRPD after grey-scale closing.</p>
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<p>Detailed view of the PRPD data set clustering procedure. The variables <span class="html-italic">d</span> and <span class="html-italic">k</span> denote the dimensionality of the latent space and the number of clusters, respectively.</p>
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<p>General experimental setup for acquisition and analysis of partial discharge data.</p>
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<p>Example of a PRPD pattern (<math display="inline"><semantics> <mrow> <mn>256</mn> <mspace width="3.33333pt"/> <mo>×</mo> <mspace width="3.33333pt"/> <mn>256</mn> </mrow> </semantics></math> matrix).</p>
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<p>Number of PRPD diagrams for each hydroelectric generator in our data set.</p>
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<p>Silhouette scores for each configuration. A grey bar refers to the weighted average of Silhouette scores (<math display="inline"><semantics> <msub> <mover accent="true"> <mi>α</mi> <mo>¯</mo> </mover> <mi>w</mi> </msub> </semantics></math>, left vertical axis) across hydroelectric generators, while the black dot indicates the corresponding standard deviation (<math display="inline"><semantics> <msub> <mi>σ</mi> <mi>α</mi> </msub> </semantics></math>, right vertical axis).</p>
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<p>Caliński–Harabasz scores for each configuration. A grey bar refers to the weighted average of Caliński–Harabasz scores (<math display="inline"><semantics> <msub> <mover accent="true"> <mi>β</mi> <mo>¯</mo> </mover> <mi>w</mi> </msub> </semantics></math>, left vertical axis) across hydroelectric generators, while the black dot indicates the corresponding standard deviation (<math display="inline"><semantics> <msub> <mi>σ</mi> <mi>β</mi> </msub> </semantics></math>, right vertical axis).</p>
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<p>Davies–Bouldin scores for each configuration. A grey bar refers to the weighted average of Davies–Bouldin scores (<math display="inline"><semantics> <msub> <mover accent="true"> <mi>γ</mi> <mo>¯</mo> </mover> <mi>w</mi> </msub> </semantics></math>, left vertical axis) across hydroelectric generators, while the black dot indicates the corresponding standard deviation (<math display="inline"><semantics> <msub> <mi>σ</mi> <mi>γ</mi> </msub> </semantics></math>, right vertical axis).</p>
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<p>Weighted average Silhouette scores (<math display="inline"><semantics> <msub> <mover accent="true"> <mi>α</mi> <mo>¯</mo> </mover> <mi>w</mi> </msub> </semantics></math>) vs. weighted average Chaliński–Harabasz scores (<math display="inline"><semantics> <msub> <mover accent="true"> <mi>β</mi> <mo>¯</mo> </mover> <mi>w</mi> </msub> </semantics></math>).</p>
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<p>Weighted average Silhouette scores (<math display="inline"><semantics> <msub> <mover accent="true"> <mi>α</mi> <mo>¯</mo> </mover> <mi>w</mi> </msub> </semantics></math>) vs. weighted average Davies–Bouldin scores (<math display="inline"><semantics> <msub> <mover accent="true"> <mi>γ</mi> <mo>¯</mo> </mover> <mi>w</mi> </msub> </semantics></math>).</p>
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<p>Representative PRPDs from clusters 0 (<b>a</b>) and 1 (<b>b</b>) obtained from the best configuration selected by the Silhouette score for the machine 12. Vertical and horizontal axes indicate the indices of a 256 × 256 PRPD matrix.</p>
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<p>Examples of two very distinct PRPDs associated to one cluster (cluster 0) obtained from the best configuration selected by the Davies–Bouldin score for the machine 12. Vertical and horizontal axes indicate the indices of a 256 × 256 PRPD matrix.</p>
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20 pages, 9588 KiB  
Article
Research on Video Monitoring Technology for Galloping of OCS Additional Conductors of High-Speed Railway in Strong Wind Zone
by Wentao Zhang, Wenhao Wang, Shanpeng Zhao, Huayu Yuan, Youpeng Zhang, Xiaotong Yao and Guangwu Chen
Sensors 2024, 24(23), 7521; https://doi.org/10.3390/s24237521 - 25 Nov 2024
Viewed by 458
Abstract
The strong wind environment causes the additional conductor of the overhead contact system (OCS) of the Lanzhou–Xinjiang high-speed railway to gallop, significantly impacting the safe operation of the train. This paper presents the design of an online monitoring system for the galloping of [...] Read more.
The strong wind environment causes the additional conductor of the overhead contact system (OCS) of the Lanzhou–Xinjiang high-speed railway to gallop, significantly impacting the safe operation of the train. This paper presents the design of an online monitoring system for the galloping of additional conductors in the OCS, utilizing video monitoring for accurate and real-time assessment. Initially, the dynamics of the OCS additional conductor and its operational environment are examined, leading to the selection of suitable data transmission and power supply methods to finalize the camera configuration. Secondly, a preprocessing method for enhancing images of galloping in OCS additional conductors is developed, effectively reducing noise in edge detection through a region chain code clustering analysis. The video monitoring system effectively extracts wire edges, addressing the issues of splitting, breakage, and edge overlap in edge detection, while accurately identifying wire targets in video images. In conclusion, a galloping monitoring test platform is established to extract galloping data from additional conductors through video monitoring. The analysis of the galloping frequency and amplitude facilitates the comprehensive monitoring and assessment of the galloping status of OCS additional conductors. The video monitoring system effectively extracts and analyzes galloping data of the OCS additional conductor, fulfilling the fundamental requirements for the online monitoring of additional conductor galloping, and possesses significant engineering application value. Full article
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<p>Additional conductor galloping of the Lanzhou–Xinjiang high-speed railway OCS in Baili wind zone. (<b>a</b>) Maximum galloping point; (<b>b</b>) Minimum galloping point.</p>
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<p>Fitting wear condition in strong wind zones.</p>
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<p>Structure diagram of the OCS and track system for the Lanzhou–Xinjiang high-speed railway in the strong wind zone.</p>
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<p>Displacement diagram of the galloping of OCS additional conductor.</p>
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<p>Schematic diagram of imaging of a point on the OCS additional conductor.</p>
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<p>Coordinate transformation structure diagram.</p>
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<p>Design block diagram of additional conductor galloping monitoring system.</p>
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<p>Schematic diagram of the terminal layout of the additional conductor galloping monitoring system.</p>
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<p>Image preprocessing and edge detection flowchart.</p>
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<p>Image grayscale effect processing diagram. (<b>a</b>) Original image; (<b>b</b>) Average method; (<b>c</b>) Weighted average; (<b>d</b>) Maximum value method.</p>
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<p>Different filtering methods. (<b>a</b>) Mean filtering—Gaussian noise processing. (<b>b</b>) Mean filtering—salt-and-pepper noise processing. (<b>c</b>) Gaussian filtering—Gaussian noise processing. (<b>d</b>) Gaussian filtering—salt-and-pepper noise processing. (<b>e</b>) Median filtering—Gaussian noise processing. (<b>f</b>) Median filtering—salt-and-pepper noise processing.</p>
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<p>Image grayscale effect processing diagram. (<b>a</b>) Original image; (<b>b</b>) Equalized image; (<b>c</b>) Original image histogram; (<b>d</b>) Equalized image histogram.</p>
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<p>Image grayscale effect processing diagram. (<b>a</b>) Original image; (<b>b</b>) Equalized image; (<b>c</b>) Original image histogram; (<b>d</b>) Equalized image histogram.</p>
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<p>Horizontal Ratio operator.</p>
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<p>Four−way connectivity definition.</p>
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<p>The experimental results of Scenario 1. (<b>a</b>) Original image. (<b>b</b>) Improved Ratio operator processing. (<b>c</b>) Four-direction chain code tracking processing.</p>
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<p>The experimental results of Scenario 2. (<b>a</b>) Original image. (<b>b</b>) Improved Ratio operator processing. (<b>c</b>) Four-direction chain code tracking processing.</p>
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<p>The experimental results of Scenario 3. (<b>a</b>) Original image. (<b>b</b>) Improved Ratio operator processing. (<b>c</b>) Four-direction chain code tracking processing.</p>
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<p>Comparative experiment. (<b>a1</b>) Ratio of Scenario 1; (<b>b1</b>) Roberts of Scenario 1; (<b>c1</b>) Sobel of Scenario 1; (<b>a2</b>) Ratio of Scenario 2; (<b>b2</b>) Roberts of Scenario 2; (<b>c2</b>) Sobel of Scenario 2; (<b>a3</b>) Ratio of Scenario 3; (<b>b3</b>) Roberts of Scenario 3; (<b>c3</b>) Sobel of Scenario 3.</p>
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<p>Checkerboard images shot from different angles.</p>
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<p>Calibration space stereogram.</p>
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<p>Video monitoring simulation test platform for OCS additional conductor oscillation.</p>
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<p>Frame of additional conductor galloping. (<b>a</b>) Highest point of additional conductor; (<b>b</b>) Lowest point of additional conductor.</p>
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<p>Time history curve of vertical displacement of target measuring point.</p>
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<p>Schematic diagram of galloping frequency calculation.</p>
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<p>Spectrum curve.</p>
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20 pages, 1628 KiB  
Review
Energy Efficiency for 5G and Beyond 5G: Potential, Limitations, and Future Directions
by Adrian Ichimescu, Nirvana Popescu, Eduard C. Popovici and Antonela Toma
Sensors 2024, 24(22), 7402; https://doi.org/10.3390/s24227402 - 20 Nov 2024
Viewed by 888
Abstract
Energy efficiency constitutes a pivotal performance indicator for 5G New Radio (NR) networks and beyond, and achieving optimal efficiency necessitates the meticulous consideration of trade-offs against other performance parameters, including latency, throughput, connection densities, and reliability. Energy efficiency assumes it is of paramount [...] Read more.
Energy efficiency constitutes a pivotal performance indicator for 5G New Radio (NR) networks and beyond, and achieving optimal efficiency necessitates the meticulous consideration of trade-offs against other performance parameters, including latency, throughput, connection densities, and reliability. Energy efficiency assumes it is of paramount importance for both User Equipment (UE) to achieve battery prologue and base stations to achieve savings in power and operation cost. This paper presents an exhaustive review of power-saving research conducted for 5G and beyond 5G networks in recent years, elucidating the advantages, disadvantages, and key characteristics of each technique. Reinforcement learning, heuristic algorithms, genetic algorithms, Markov Decision Processes, and the hybridization of various standard algorithms inherent to 5G and 5G NR represent a subset of the available solutions that shall undergo scrutiny. In the final chapters, this work identifies key limitations, namely, computational expense, deployment complexity, and scalability constraints, and proposes a future research direction by theoretically exploring online learning, the clustering of the network base station, and hard HO to lower the consumption of networks like 2G or 4G. In lowering carbon emissions and lowering OPEX, these three additional features could help mobile network operators achieve their targets. Full article
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<p>5G network.</p>
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<p>System model of the considered STIN.</p>
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<p>System model of ITAN with multi-layer RIS.</p>
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<p>Proposed theoretical solution.</p>
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27 pages, 8422 KiB  
Article
Systematic Analysis of Commuting Behavior in Italy Using K-Means Clustering and Spatial Analysis: Towards Inclusive and Sustainable Urban Transport Solutions
by Mahnaz Babapourdijojin, Maria Vittoria Corazza and Guido Gentile
Future Transp. 2024, 4(4), 1430-1456; https://doi.org/10.3390/futuretransp4040069 - 19 Nov 2024
Viewed by 753
Abstract
Transport Demand Management (TDM) is crucial in shaping travel behavior and enhancing urban mobility by promoting sustainable transport options. This study represents a comprehensive analysis of employee commuting behavior across seventy-seven cities in Italy, with a focus on Rome as a case study. [...] Read more.
Transport Demand Management (TDM) is crucial in shaping travel behavior and enhancing urban mobility by promoting sustainable transport options. This study represents a comprehensive analysis of employee commuting behavior across seventy-seven cities in Italy, with a focus on Rome as a case study. It investigates some requirements of the workplace travel plan as a TDM strategy for promoting sustainable commuting. An online survey conducted in June 2022 yielded 2314 valid responses, including 1320 from private car drivers. K-means clustering was used to identify distinct behavioral patterns among commuters, revealing four clusters based on demographic factors and transport preferences, such as age, gender, family circumstances, vehicle ownership, willingness to walk, ride bicycles, or e-scooters, and reasons for mode choice. This study analyzed Rome’s public transport network, land use, and private car use. Results underscore the need for tailored transport policies that enhance inclusivity and accessibility, especially for employees with family members who cannot commute independently. A spatial analysis of Rome reveals significant infrastructure deficiencies, such as complicated transfers and inaccessible stations, which discourage PT use. Future research should explore the impact of remote work and psychological factors and conduct in-depth subgroup analyses to inform inclusive transport policy development. Full article
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<p>(<b>a</b>) Cities covering the entire dataset (2314 valid responses); (<b>b</b>) cities covering only private car drivers (1320 valid responses).</p>
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<p>Ten cities with the highest response rate.</p>
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<p>The elbow method.</p>
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<p>The Davies–Bouldin Index.</p>
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<p>Development of the city, according to [<a href="#B46-futuretransp-04-00069" class="html-bibr">46</a>].</p>
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<p>Metro lines and locations of employees in Rome.</p>
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<p>Satisfaction with different aspects of public transport services.</p>
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<p>Two-step clustering results.</p>
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<p>Metro station accessibility.</p>
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15 pages, 443 KiB  
Article
Leveraging Large Language Models for Efficient Alert Aggregation in AIOPs
by Junjie Zha, Xinwen Shan, Jiaxin Lu, Jiajia Zhu and Zihan Liu
Electronics 2024, 13(22), 4425; https://doi.org/10.3390/electronics13224425 - 12 Nov 2024
Viewed by 586
Abstract
Alerts are an essential tool for the detection of anomalies and ensuring the smooth operation of online service systems by promptly notifying engineers of potential issues. However, the increasing scale and complexity of IT infrastructure often result in “alert storms” during system failures, [...] Read more.
Alerts are an essential tool for the detection of anomalies and ensuring the smooth operation of online service systems by promptly notifying engineers of potential issues. However, the increasing scale and complexity of IT infrastructure often result in “alert storms” during system failures, overwhelming engineers with a deluge of often correlated alerts. Therefore, effective alert aggregation is crucial in isolating root causes and accelerating failure resolution. Existing approaches typically rely on either semantic similarity or statistical methods, both of which have significant limitations, such as ignoring causal relationships or struggling to handle infrequent alerts. To overcome these drawbacks, we propose a novel two-phase alert aggregation approach. We employ temporal–spatial clustering to group alerts based on their temporal proximity and spatial attributes. In the second phase, we utilize large language models to trace the cascading effects of service failures and aggregate alerts that share the same root cause. Experimental evaluations on datasets from real-world cloud platforms demonstrate the effectiveness of our method, achieving superior performance compared to traditional aggregation techniques. Full article
(This article belongs to the Special Issue Advances in Data-Driven Artificial Intelligence)
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<p>The overall workflow of incident management.</p>
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<p>Example of an alert.</p>
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<p>Overview of our two-phase alert aggregation algorithm.</p>
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<p>The prompt for alert summarization and node mapping.</p>
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18 pages, 871 KiB  
Article
Defeating the Dark Sides of FinTech: A Regression-Based Analysis of Digitalization’s Role in Fostering Consumers’ Financial Inclusion in Central and Eastern Europe
by Mirela Clementina Panait, Simona Andreea Apostu, Iza Gigauri, Maria Giovanna Confetto and Maria Palazzo
Risks 2024, 12(11), 178; https://doi.org/10.3390/risks12110178 - 11 Nov 2024
Viewed by 736
Abstract
Financial technologies metamorphose economies with customer-focused innovation. In this way, financial inclusion is fostered and economic growth is increased. However, risks, trust issues, and ethical concerns stem from the faster advancement of digital technologies and expanding financial innovation. Thus, this paper aims to [...] Read more.
Financial technologies metamorphose economies with customer-focused innovation. In this way, financial inclusion is fostered and economic growth is increased. However, risks, trust issues, and ethical concerns stem from the faster advancement of digital technologies and expanding financial innovation. Thus, this paper aims to understand the risks and barriers associated with FinTech and consumer adoption, focussing on the impact of digitalization on financial products/services’ acceptance. The research investigates the impact of digitalization on financial services and the recognition of the role played in the global economy by FinTech. For this reason, the regression analysis was used to explore the influence and correlation of various variables on FinTech in Central and Eastern European (CEE) countries, such as Internet usage, online shopping, paying bills via the Internet, and making and receiving digital payments. The results show differences between three clusters of CEEs in terms of FinTech adoption. While several past studies have explored the advantages of FinTech, few studies have investigated the risks associated with its adoption, trust, and barriers to its usage in different country contexts. The present paper fills the gap by analysing the data on Internet usage, online shopping, paying bills via Internet, and sending or receiving digital payments in CEE countries. The study recommends that FinTech companies share information online not only to present their offerings to users, but also to promote financial education through clear and straightforward communication about the features of their services. This approach can indirectly benefit society by contributing to financial development, inclusion, social stability, and, consequently, sustainable development. Full article
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<p>Boxplot. Source: authors.</p>
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<p>Clusters of countries in Central and Eastern Europe according to FinTech status. Source: authors.</p>
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19 pages, 4252 KiB  
Article
Information Propagation in Hypergraph-Based Social Networks
by Hai-Bing Xiao, Feng Hu, Peng-Yue Li, Yu-Rong Song and Zi-Ke Zhang
Entropy 2024, 26(11), 957; https://doi.org/10.3390/e26110957 - 6 Nov 2024
Viewed by 660
Abstract
Social networks, functioning as core platforms for modern information dissemination, manifest distinctive user clustering behaviors and state transition mechanisms, thereby presenting new challenges to traditional information propagation models. Based on hypergraph theory, this paper augments the traditional SEIR model by introducing a novel [...] Read more.
Social networks, functioning as core platforms for modern information dissemination, manifest distinctive user clustering behaviors and state transition mechanisms, thereby presenting new challenges to traditional information propagation models. Based on hypergraph theory, this paper augments the traditional SEIR model by introducing a novel hypernetwork information dissemination SSEIR model specifically designed for online social networks. This model accurately represents complex, multi-user, high-order interactions. It transforms the traditional single susceptible state (S) into active (Sa) and inactive (Si) states. Additionally, it enhances traditional information dissemination mechanisms through reaction process strategies (RP strategies) and formulates refined differential dynamical equations, effectively simulating the dissemination and diffusion processes in online social networks. Employing mean field theory, this paper conducts a comprehensive theoretical derivation of the dissemination mechanisms within the SSEIR model. The effectiveness of the model in various network structures was verified through simulation experiments, and its practicality was further validated by its application on real network datasets. The results show that the SSEIR model excels in data fitting and illustrating the internal mechanisms of information dissemination within hypernetwork structures, further clarifying the dynamic evolutionary patterns of information dissemination in online social hypernetworks. This study not only enriches the theoretical framework of information dissemination but also provides a scientific theoretical foundation for practical applications such as news dissemination, public opinion management, and rumor monitoring in online social networks. Full article
(This article belongs to the Special Issue Spreading Dynamics in Complex Networks)
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<p>Evolutionary schematic of the hypernetwork model (<math display="inline"><semantics> <mrow> <mi>m</mi> <mo>=</mo> <mn>2</mn> </mrow> </semantics></math>; <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>m</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>3</mn> </mrow> </semantics></math>). Blue solid lines indicate existing hyperedges, green nodes denote existing nodes, red dashed lines depict new hyperedges added in the current time step, and blue nodes signify new nodes added during the current time step.</p>
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<p>SEIR model state transition diagram. In the context of information dissemination, the green section represents the <math display="inline"><semantics> <mrow> <mi>S</mi> </mrow> </semantics></math>-state, indicating unawareness of the information. The dark blue section is the <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state, where individuals are aware of but not spreading the information. The purple section denotes the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, where individuals actively spread the information. The light blue section represents the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state, indicating immunity to the information.</p>
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<p>SSEIR model state transition diagram. Dark green denotes the <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>i</mi> </mrow> </msub> </mrow> </semantics></math>-state, light green denotes the <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>a</mi> </mrow> </msub> </mrow> </semantics></math>-state, dark blue denotes the <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state, purple denotes the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, and light blue denotes the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state.</p>
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<p>Comparison chart of theoretical and simulation trends in information dissemination. The green dashed line represents theoretical values for the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state, the red dashed line for the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, and the light blue dashed line for the <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state. Green star-shaped markers denote simulation results for the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state, red stars for the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, and light blue stars for the <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state.</p>
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<p>Trends of information dissemination across different network models. Deep blue denotes the <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>i</mi> </mrow> </msub> </mrow> </semantics></math>-state, black denotes the <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>a</mi> </mrow> </msub> </mrow> </semantics></math>-state, light blue denotes the <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state, red denotes the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, and green denotes the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state. (<b>A</b>) displays the theoretical curves of the model, (<b>B</b>) applies the model to a hypernetwork, (<b>C</b>) to a BA scale-free network, and (<b>D</b>) to an NW small-world network.</p>
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<p>Impact of different <math display="inline"><semantics> <mrow> <mi>θ</mi> </mrow> </semantics></math> on the quantities of <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state and <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state. The (<b>A</b>) displays the effect on the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, while the (<b>B</b>) shows the effect on the <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state. The green curve corresponds to a spreading rate of 0.005, the red to 0.03, and the blue to 0.05.</p>
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<p>Effects of different <math display="inline"><semantics> <mrow> <mi>ε</mi> </mrow> </semantics></math> on the quantities of <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state and <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state. The (<b>A</b>) shows the effect of recovering rate on the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, while the (<b>B</b>) details the effect on the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state. The green curve indicates a <math display="inline"><semantics> <mrow> <mi>ε</mi> </mrow> </semantics></math> of 0.04, the red a rate of 0.02, and the blue a rate of 0.01.</p>
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<p>Impact of varying average numbers of adjacent nodes on the quantities of <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state and <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state. The (<b>A</b>) details the effects on the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, while the (<b>B</b>) details the effects on the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state. The green curve denotes <math display="inline"><semantics> <mrow> <mi>m</mi> <mo>=</mo> <mn>3</mn> </mrow> </semantics></math>, <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>m</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>7</mn> </mrow> </semantics></math>; the red curve denotes <math display="inline"><semantics> <mrow> <mi>m</mi> <mo>=</mo> <mn>2</mn> </mrow> </semantics></math>, <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>m</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>5</mn> </mrow> </semantics></math>; the blue curve denotes <math display="inline"><semantics> <mrow> <mi>m</mi> <mo>=</mo> <mn>1</mn> </mrow> </semantics></math>, <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>m</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>3</mn> </mrow> </semantics></math>.</p>
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<p>Impact of different ratios of active (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>a</mi> </mrow> </msub> </mrow> </semantics></math>) to inactive (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>i</mi> </mrow> </msub> </mrow> </semantics></math>) nodes on the quantities of <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state and <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state. The (<b>A</b>) details the effect on the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state, while the (<b>B</b>) details the effect on the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state. The green curve indicates a ratio of <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>a</mi> </mrow> </msub> <mo>:</mo> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>i</mi> </mrow> </msub> <mo>=</mo> <mn>4</mn> <mo>:</mo> <mn>6</mn> </mrow> </semantics></math>, the red a ratio of <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>a</mi> </mrow> </msub> <mo>:</mo> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>i</mi> </mrow> </msub> <mo>=</mo> <mn>3</mn> <mo>:</mo> <mn>7</mn> </mrow> </semantics></math>, and the blue a ratio of <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>a</mi> </mrow> </msub> <mo>:</mo> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mi>i</mi> </mrow> </msub> <mo>=</mo> <mn>2</mn> <mo>:</mo> <mn>8</mn> </mrow> </semantics></math>.</p>
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<p>Time-dependent curves of active users in different information dissemination models at a fixed transmission rate. The blue curve in the figure represents the trend in the number of users in the <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state in the SIR model, the red curve represents the trends in the number of users in both the <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state and <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state in the SEIR model, and the green curve represents the trends in the number of users in the <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state and <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state in the SSEIR model.</p>
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<p>Change curves of different states of the SSEIR model under various real networks. (<b>A</b>) shows the validation of the SSEIR model in a scientific collaboration network, while (<b>B</b>) depicts the validation in a Twitter social network. The figures use green, red, and blue curves to represent the change curves of the <math display="inline"><semantics> <mrow> <mi>R</mi> </mrow> </semantics></math>-state, <math display="inline"><semantics> <mrow> <mi>I</mi> </mrow> </semantics></math>-state, and <math display="inline"><semantics> <mrow> <mi>E</mi> </mrow> </semantics></math>-state, respectively.</p>
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Article
Online Reviews Meet Visual Attention: A Study on Consumer Patterns in Advertising, Analyzing Customer Satisfaction, Visual Engagement, and Purchase Intention
by Aura Lydia Riswanto, Sujin Ha, Sangho Lee and Mahnwoo Kwon
J. Theor. Appl. Electron. Commer. Res. 2024, 19(4), 3102-3122; https://doi.org/10.3390/jtaer19040150 - 6 Nov 2024
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Abstract
This study aims to bridge the gap between traditional consumer behavior analysis and modern techniques by integrating big data analysis, eye-tracking technology, and survey methods. The researchers considered that understanding consumer behavior is crucial for creating effective advertisements in the digital age. Initially, [...] Read more.
This study aims to bridge the gap between traditional consumer behavior analysis and modern techniques by integrating big data analysis, eye-tracking technology, and survey methods. The researchers considered that understanding consumer behavior is crucial for creating effective advertisements in the digital age. Initially, a big data analysis was performed to identify significant clusters of consumer sentiment from online reviews generated during a recent seasonal promotional campaign. The key factors were identified and grouped into the “Product”, “Model”, “Promo”, and “Effect” categories. Using these clusters as a foundation, an eye-tracking analysis measured visual attention metrics such as the fixation duration and count to understand how the participants engaged with the different advertisement content. Subsequently, a survey assessed the same participants’ purchase intentions and preferences related to the identified clusters. The results showed that the sentiment clusters related to products, promotions, and effects positively impacted the customer satisfaction. The eye-tracking data revealed that advertisements featuring products and models garnered the most visual attention, while the survey results indicated that promotional content significantly influenced the purchase intentions. This multi-step approach delivers an in-depth understanding of the factors that affect customer satisfaction and decision-making, providing valuable information for optimizing marketing strategies in the Korean skincare market. The findings emphasize the importance of integrating consumer sentiment analysis with visual engagement metrics to develop more effective and compelling marketing campaigns. Full article
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<p>Research processes.</p>
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<p>Top 5 skincare products from Olive Young Summer Sale 2024. Source: <a href="http://www.oliveyoung.co.kr" target="_blank">www.oliveyoung.co.kr</a>, accessed on 7 June 2024.</p>
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<p>Participant using eye-tracking machine.</p>
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<p>Network visualization.</p>
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<p>Cluster analysis result.</p>
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<p>Heat map analysis results.</p>
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