[go: up one dir, main page]
More Web Proxy on the site http://driver.im/
You seem to have javascript disabled. Please note that many of the page functionalities won't work as expected without javascript enabled.
 
 
Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (4)

Search Parameters:
Keywords = udemy

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
22 pages, 2862 KiB  
Article
AI-Powered Eye Tracking for Bias Detection in Online Course Reviews: A Udemy Case Study
by Hedda Martina Šola, Fayyaz Hussain Qureshi and Sarwar Khawaja
Big Data Cogn. Comput. 2024, 8(11), 144; https://doi.org/10.3390/bdcc8110144 - 25 Oct 2024
Viewed by 1256
Abstract
The rapid growth of e-learning increased the use of digital reviews to influence consumer purchases. In a pioneering approach, we employed AI-powered eye tracking to evaluate the accuracy of predictions in forecasting purchasing patterns. This study examined customer perceptions of negative, positive, and [...] Read more.
The rapid growth of e-learning increased the use of digital reviews to influence consumer purchases. In a pioneering approach, we employed AI-powered eye tracking to evaluate the accuracy of predictions in forecasting purchasing patterns. This study examined customer perceptions of negative, positive, and neutral reviews by analysing emotional valence, review content, and perceived credibility. We measured ‘Attention’, ‘Engagement’, ‘Clarity’, ‘Cognitive Demand’, ‘Time Spent’, ‘Percentage Seen’, and ‘Focus’, focusing on differences across review categories to understand their effects on customers and the correlation between these metrics and navigation to other screen areas, indicating purchasing intent. Our goal was to assess the predictive power of online reviews on future buying behaviour. We selected Udemy courses, a platform with over 70 million learners. Predict (version 1.0.), developed by Stanford University, was used with the algorithm on the consumer neuroscience database (n = 180,000) from Tobii eye tracking (Tobii X2-30, Tobii Pro AB, Danderyd, Sweden). We utilised R programming, ANOVA, and t-tests for analysis. The study concludes that AI neuromarketing techniques in digital feedback analysis offer valuable insights for educators to tailor strategies based on review susceptibility, thereby sparking interest in the innovative possibilities of using AI technology in neuromarketing. Full article
Show Figures

Figure 1

Figure 1
<p>(<b>a</b>): Research flow chart. (<b>b</b>): A detailed research roadmap is derived from project development, setup, and execution.</p>
Full article ">Figure 1 Cont.
<p>(<b>a</b>): Research flow chart. (<b>b</b>): A detailed research roadmap is derived from project development, setup, and execution.</p>
Full article ">Figure 2
<p>(<b>a</b>–<b>c</b>): Focus score differences between negative and positive reviews based on the video data analysis with heatmaps selected on reviews. The heat map illustrates the areas that garnered the most significant attention, while the attention itself was evaluated on a frame-by-frame basis throughout the entire video. (<b>d</b>–<b>f</b>): Cognitive Demand score differences between negative and positive reviews are based on the video data analysis with fog map selected on reviews. The fog map unambiguously reveals the areas not discernible to the human eye when recording the cognitive demand frame by frame. Consequently, the figure appears illegible.</p>
Full article ">Figure 2 Cont.
<p>(<b>a</b>–<b>c</b>): Focus score differences between negative and positive reviews based on the video data analysis with heatmaps selected on reviews. The heat map illustrates the areas that garnered the most significant attention, while the attention itself was evaluated on a frame-by-frame basis throughout the entire video. (<b>d</b>–<b>f</b>): Cognitive Demand score differences between negative and positive reviews are based on the video data analysis with fog map selected on reviews. The fog map unambiguously reveals the areas not discernible to the human eye when recording the cognitive demand frame by frame. Consequently, the figure appears illegible.</p>
Full article ">Figure 2 Cont.
<p>(<b>a</b>–<b>c</b>): Focus score differences between negative and positive reviews based on the video data analysis with heatmaps selected on reviews. The heat map illustrates the areas that garnered the most significant attention, while the attention itself was evaluated on a frame-by-frame basis throughout the entire video. (<b>d</b>–<b>f</b>): Cognitive Demand score differences between negative and positive reviews are based on the video data analysis with fog map selected on reviews. The fog map unambiguously reveals the areas not discernible to the human eye when recording the cognitive demand frame by frame. Consequently, the figure appears illegible.</p>
Full article ">Figure 3
<p>(<b>a</b>): Total Attention-derived focus heat map of the negative (2-star) review category based on the image data analysis. (<b>b</b>): Total Attention-derived heat map of the positive (5-star) review category based on the image data analysis. The ‘both’ figure represents the AOI’s selected per each review which was needed to the obtain more insightful findings.</p>
Full article ">Figure 3 Cont.
<p>(<b>a</b>): Total Attention-derived focus heat map of the negative (2-star) review category based on the image data analysis. (<b>b</b>): Total Attention-derived heat map of the positive (5-star) review category based on the image data analysis. The ‘both’ figure represents the AOI’s selected per each review which was needed to the obtain more insightful findings.</p>
Full article ">Figure 4
<p>Correlation matrix for the review view of the negative (2-star) review category from the image data analysis.</p>
Full article ">
44 pages, 10319 KiB  
Article
Performance Analysis of Lambda Architecture-Based Big-Data Systems on Air/Ground Surveillance Application with ADS-B Data
by Mustafa Umut Demirezen and Tuğba Selcen Navruz
Sensors 2023, 23(17), 7580; https://doi.org/10.3390/s23177580 - 31 Aug 2023
Viewed by 2408
Abstract
This study introduces a novel methodology designed to assess the accuracy of data processing in the Lambda Architecture (LA), an advanced big-data framework qualified for processing streaming (data in motion) and batch (data at rest) data. Distinct from prior studies that have focused [...] Read more.
This study introduces a novel methodology designed to assess the accuracy of data processing in the Lambda Architecture (LA), an advanced big-data framework qualified for processing streaming (data in motion) and batch (data at rest) data. Distinct from prior studies that have focused on hardware performance and scalability evaluations, our research uniquely targets the intricate aspects of data-processing accuracy within the various layers of LA. The salient contribution of this study lies in its empirical approach. For the first time, we provide empirical evidence that validates previously theoretical assertions about LA, which have remained largely unexamined due to LA’s intricate design. Our methodology encompasses the evaluation of prospective technologies across all levels of LA, the examination of layer-specific design limitations, and the implementation of a uniform software development framework across multiple layers. Specifically, our methodology employs a unique set of metrics, including data latency and processing accuracy under various conditions, which serve as critical indicators of LA’s accurate data-processing performance. Our findings compellingly illustrate LA’s “eventual consistency”. Despite potential transient inconsistencies during real-time processing in the Speed Layer (SL), the system ultimately converges to deliver precise and reliable results, as informed by the comprehensive computations of the Batch Layer (BL). This empirical validation not only confirms but also quantifies the claims posited by previous theoretical discourse, with our results indicating a 100% accuracy rate under various severe data-ingestion scenarios. We applied this methodology in a practical case study involving air/ground surveillance, a domain where data accuracy is paramount. This application demonstrates the effectiveness of the methodology using real-world data-intake scenarios, therefore distinguishing this study from hardware-centric evaluations. This study not only contributes to the existing body of knowledge on LA but also addresses a significant literature gap. By offering a novel, empirically supported methodology for testing LA, a methodology with potential applicability to other big-data architectures, this study sets a precedent for future research in this area, advancing beyond previous work that lacked empirical validation. Full article
(This article belongs to the Special Issue Edge Computing in Sensors Networks)
Show Figures

Figure 1

Figure 1
<p>Conceptual diagram of Lambda Architecture.</p>
Full article ">Figure 2
<p>Lambda architecture for air traffic monitoring applications.</p>
Full article ">Figure 3
<p>Data generation agent flow diagram.</p>
Full article ">Figure 4
<p>Coordinated operation of BL and SL with CAA.</p>
Full article ">Figure 5
<p>Conceptual visualization of CCA operation parameters.</p>
Full article ">Figure 6
<p>Data processing speed under normal conditions.</p>
Full article ">Figure 7
<p>Data processing results. (<b>a</b>) Normal conditions; (<b>b</b>) Repetitive data ingestion; (<b>c</b>) Delayed data ingestion; (<b>d</b>) LA with BL not working case; (<b>e</b>) LA with delayed data and BL not working case; (<b>f</b>) LA with repetitive data and BL not working case.</p>
Full article ">Figure 8
<p>Variation of performance metrics for the nominal working case.</p>
Full article ">Figure 9
<p>Variation of performance metrics for repetitive data-ingestion case. (<b>a</b>) Full View; (<b>b</b>) Zoomed View.</p>
Full article ">Figure 10
<p>Variation of performance metrics for delayed data-ingestion cases. (<b>a</b>) Full View; (<b>b</b>) Zoomed View.</p>
Full article ">Figure 11
<p>Variation of performance metrics for data ingestion when the batch layer stops working. (<b>a</b>) Full View; (<b>b</b>) Zoomed View.</p>
Full article ">Figure 12
<p>Variation of performance metrics for repetitive data ingestion when the batch layer stops working. (<b>a</b>) Full View; (<b>b</b>) Zoomed View.</p>
Full article ">Figure 13
<p>Variation of performance metrics for delayed data ingestion when the batch layer stops working. (<b>a</b>) Full View; (<b>b</b>) Zoomed View.</p>
Full article ">Figure A1
<p>CyFly dashboard visualization.</p>
Full article ">Figure A2
<p>CyFly word cloud visualization.</p>
Full article ">Figure A3
<p>CyFly heatmap visualization.</p>
Full article ">Figure A4
<p>CyFly radar chart visualization.</p>
Full article ">
16 pages, 4271 KiB  
Article
E-Learning Environment Based Intelligent Profiling System for Enhancing User Adaptation
by Ramneet Kaur, Deepali Gupta, Mani Madhukar, Aman Singh, Maha Abdelhaq, Raed Alsaqour, Jose Breñosa and Nitin Goyal
Electronics 2022, 11(20), 3354; https://doi.org/10.3390/electronics11203354 - 18 Oct 2022
Cited by 7 | Viewed by 2586
Abstract
Online learning systems have expanded significantly over the last couple of years. Massive Open Online Courses (MOOCs) have become a major trend on the internet. During the COVID-19 pandemic, the count of learner enrolment has increased in various MOOC platforms like Coursera, Udemy, [...] Read more.
Online learning systems have expanded significantly over the last couple of years. Massive Open Online Courses (MOOCs) have become a major trend on the internet. During the COVID-19 pandemic, the count of learner enrolment has increased in various MOOC platforms like Coursera, Udemy, Swayam, Udacity, FutureLearn, NPTEL, Khan Academy, EdX, SWAYAM, etc. These platforms offer multiple courses, and it is difficult for online learners to choose a suitable course as per their requirements. In order to improve this e-learning education environment and to reduce the drop-out ratio, online learners will need a system in which all the platform’s offered courses are compared and recommended, according to the needs of the learner. So, there is a need to create a learner’s profile to analyze so many platforms in order to fulfill the educational needs of the learners. To develop a profile of a learner or user, three input parameters are considered: personal details, educational details, and knowledge level. Along with these parameters, learners can also create their user profiles by uploading their CVs or LinkedIn. In this paper, the major innovation is to implement a user interface-based intelligent profiling system for enhancing user adaptation in which feedback will be received from a user and courses will be recommended according to user/learners’ preferences. Full article
Show Figures

Figure 1

Figure 1
<p>Process of Machine Learning.</p>
Full article ">Figure 2
<p>Parameters used for developing the Learners’ Profile.</p>
Full article ">Figure 3
<p>Sub-categories of personal details parameter.</p>
Full article ">Figure 4
<p>Sub-categories of educational details parameter.</p>
Full article ">Figure 5
<p>Sub-categories of knowledge level parameters.</p>
Full article ">Figure 6
<p>Flowchart of developing the learners’ profile.</p>
Full article ">Figure 7
<p>User profile of the registered user.</p>
Full article ">Figure 8
<p>User/learners’ profile via uploading the CV.</p>
Full article ">Figure 9
<p>Number of students enrolled in each level.</p>
Full article ">Figure 10
<p>Number of certification courses in each level.</p>
Full article ">Figure 11
<p>Relationship Map.</p>
Full article ">Figure 12
<p>Progress Map.</p>
Full article ">Figure 13
<p>Performance parameters evaluation for pipeline 1.</p>
Full article ">
11 pages, 1262 KiB  
Article
Google Trend Analysis and Paradigm Shift of Online Education Platforms during the COVID-19 Pandemic
by Ashwani Kumar Kansal, Jyoti Gautam, Nalini Chintalapudi, Shivani Jain and Gopi Battineni
Infect. Dis. Rep. 2021, 13(2), 418-428; https://doi.org/10.3390/idr13020040 - 12 May 2021
Cited by 30 | Viewed by 10541
Abstract
Objective: The largest pandemic in history, the COVID-19 pandemic, has been declared a doomsday globally. The second wave spreading worldwide has devastating consequences in every sector of life. Several measures to contain and curb its infection have forged significant challenges for the education [...] Read more.
Objective: The largest pandemic in history, the COVID-19 pandemic, has been declared a doomsday globally. The second wave spreading worldwide has devastating consequences in every sector of life. Several measures to contain and curb its infection have forged significant challenges for the education community. With an estimated 1.6 billion learners, the closure of schools and other educational institutions has impacted more than 90% of students worldwide from the elementary to tertiary level. Methods: In a view to studying impacts on student’s fraternity, this article aims at addressing alternative ways of educating—more specifically, online education—through the analysis of Google trends for the past year. The study analyzed the platforms of online teaching and learning systems that have been enabling remote learning, thereby limiting the impact on the education system. Thorough text analysis is performed on an existing dataset from Kaggle to retrieve insight on the clustering of words that are more often looked at during this pandemic to find the general patterns of their occurrence. Findings: The results show that the coronavirus patients are the most trending patterns in word search clustering, with the education system being at the control and preventive measures to bring equilibrium in the system of education. There has been significant growth in online platforms in the last year. Existing assets of educational establishments have effectively converted conventional education into new-age online education with the help of virtual classes and other key online tools in this continually fluctuating scholastic setting. The effective usage of teaching tools such as Microsoft Teams, Zoom, Google Meet, and WebEx are the most used online platforms for the conduction of classes, and whiteboard software tools and learning apps such as Vedantu, Udemy, Byju’s, and Whitehat Junior have been big market players in the education system over the pandemic year, especially in India. Conclusions: The article helps to draw a holistic approach of ongoing online teaching-learning methods during the lockdown and also highlights changes that took place in the conventional education system amid the COVID pandemic to overcome the persisting disruption in academic activities and to ensure correct perception towards the online procedure as a normal course of action in the new educational system. To fill in the void of classroom learning and to minimize the virus spread over the last year, digital learning in various schools and colleges has been emphasized, leading to a significant increase in the usage of whiteboard software platforms. Full article
(This article belongs to the Section Infection Prevention and Control)
Show Figures

Figure 1

Figure 1
<p>Word cloud of most common search patterns.</p>
Full article ">Figure 2
<p>Cluster dendrogram.</p>
Full article ">Figure 3
<p>Comparison of different online platforms.</p>
Full article ">Figure 4
<p>School-level online platforms.</p>
Full article ">Figure 5
<p>UG and PG course provider.</p>
Full article ">
Back to TopTop