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- research-articleDecember 2024
Zero-Shot Pose Estimation and Tracking of Autonomous Mobile Robots using Infrastructure Vision Sensors - An End-to-End Perception Framework
ICVGIP '24: Proceedings of the Fifteenth Indian Conference on Computer Vision Graphics and Image ProcessingArticle No.: 19, Pages 1–9https://doi.org/10.1145/3702250.3702269We propose a scalable perception framework leveraging monocular security cameras in the infrastructure for localizing and tracking indoor autonomous mobile robots. We present a zero-shot pose estimation approach that combines semantic and visual ...
- research-articleDecember 2024
Manifold Sampling for Differentiable Uncertainty in Radiance Fields
- Linjie Lyu,
- Ayush Tewari,
- Marc Habermann,
- Shunsuke Saito,
- Michael Zollhöfer,
- Thomas Leimkühler,
- Christian Theobalt
SA '24: SIGGRAPH Asia 2024 Conference PapersArticle No.: 85, Pages 1–11https://doi.org/10.1145/3680528.3687655Radiance fields are powerful and, hence, popular models for representing the appearance of complex scenes. Yet, constructing them based on image observations gives rise to ambiguities and uncertainties. We propose a versatile approach for learning ...
- short-paperOctober 2024
Reliable Knowledge Graph Reasoning with Uncertainty Quantification
CIKM '24: Proceedings of the 33rd ACM International Conference on Information and Knowledge ManagementPages 5463–5466https://doi.org/10.1145/3627673.3680266Recently, Knowledge Graphs (KGs) have been successfully coupled with Large Language Models (LLMs) to mitigate their hallucinations and enhance their reasoning capability, e.g., KG-based retrieval-augmented framework for question-answering. However, ...
- research-articleOctober 2024
Towards Uncertainty Quantification for Time Series Segmentation
CIKM '24: Proceedings of the 33rd ACM International Conference on Information and Knowledge ManagementPages 519–528https://doi.org/10.1145/3627673.3679652Time Series Segmentation (TSS) is a data mining task widely used in many applications to generate a set of change points for a time series. Current TSS performance analyses focus on accuracy and, therefore, fail to fully evaluate the reliability and ...
- ArticleOctober 2024
Explainable Vertebral Fracture Analysis with Uncertainty Estimation Using Differentiable Rule-Based Classification
Medical Image Computing and Computer Assisted Intervention – MICCAI 2024Pages 318–328https://doi.org/10.1007/978-3-031-72117-5_30AbstractWe present a novel method for explainable vertebral fracture assessment (XVFA) in low-dose radiographs using deep neural networks, incorporating vertebra detection and keypoint localization with uncertainty estimates. We incorporate Genant’s semi-...
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- ArticleSeptember 2024
Temporal Evaluation of Uncertainty Quantification Under Distribution Shift
AbstractUncertainty quantification is emerging as a critical tool in high-stakes decision-making processes, where trust in automated predictions that lack accuracy and precision can be time-consuming and costly. In drug discovery, such high-stakes ...
- research-articleSeptember 2024
Quantifying Epistemic Uncertainty in Binary Classification via Accuracy Gain
ABSTRACTRecently, a surge of interest has been given to quantifying epistemic uncertainty (EU), the reducible portion of uncertainty due to lack of data. We propose a novel EU estimator in the binary classification setting, as the posterior expected ...
- research-articleSeptember 2024
Conformal Multi‐Target Hyperrectangles
ABSTRACTWe propose conformal hyperrectangular prediction regions for multi‐target regression. We propose split conformal prediction algorithms for both point and quantile regression to form hyperrectangular prediction regions, which allow for easy ...
- ArticleSeptember 2024
CUQ-GNN: Committee-Based Graph Uncertainty Quantification Using Posterior Networks
Machine Learning and Knowledge Discovery in Databases. Research Track and Demo TrackPages 306–323https://doi.org/10.1007/978-3-031-70371-3_18AbstractIn this work, we study the influence of domain-specific characteristics when defining a meaningful notion of predictive uncertainty on graph data. Previously, the so-called Graph Posterior Network (GPN) model has been proposed to quantify ...
- ArticleSeptember 2024
Object Hallucination Detection in Large Vision Language Models via Evidential Conflict
AbstractDespite their remarkable ability to understand both textual and visual data, large vision-language models (LVLMs) still face issues with hallucination. This is particularly presented as the object hallucination, where the models inaccurately ...
- research-articleAugust 2024
Conformalized Link Prediction on Graph Neural Networks
KDD '24: Proceedings of the 30th ACM SIGKDD Conference on Knowledge Discovery and Data MiningPages 4490–4499https://doi.org/10.1145/3637528.3672061Graph Neural Networks (GNNs) excel in diverse tasks, yet their applications in high-stakes domains are often hampered by unreliable predictions. Although numerous uncertainty quantification methods have been proposed to address this limitation, they ...
- research-articleAugust 2024
Conformal Counterfactual Inference under Hidden Confounding
KDD '24: Proceedings of the 30th ACM SIGKDD Conference on Knowledge Discovery and Data MiningPages 397–408https://doi.org/10.1145/3637528.3671976Personalized decision making requires the knowledge of potential outcomes under different treatments, and confidence intervals about the potential outcomes further enrich this decision-making process and improve its reliability in high-stakes scenarios. ...
- research-articleAugust 2024
DUE: Dynamic Uncertainty-Aware Explanation Supervision via 3D Imputation
KDD '24: Proceedings of the 30th ACM SIGKDD Conference on Knowledge Discovery and Data MiningPages 6335–6343https://doi.org/10.1145/3637528.3671641Explanation supervision aims to enhance deep learning models by integrating additional signals to guide the generation of model explanations, showcasing notable improvements in both the predictability and explainability of the model. However, the ...
- research-articleAugust 2024
Asymptotic Consistency for Nonconvex Risk-Averse Stochastic Optimization with Infinite-Dimensional Decision Spaces
Mathematics of Operations Research (MOOR), Volume 49, Issue 3Pages 1403–1418https://doi.org/10.1287/moor.2022.0200Optimal values and solutions of empirical approximations of stochastic optimization problems can be viewed as statistical estimators of their true values. From this perspective, it is important to understand the asymptotic behavior of these estimators as ...
- posterAugust 2024
Is greed still good in multi-objective Bayesian optimisation?
GECCO '24 Companion: Proceedings of the Genetic and Evolutionary Computation Conference CompanionPages 2103–2106https://doi.org/10.1145/3638530.3664189Bayesian optimisation (BO) is a popular tool for solving expensive optimisation problems. BO utilises Bayesian models and balances exploitation and exploration in searching for potential solutions. In this work, we investigate the trade-off between ...
- short-paperJuly 2024
Explainable Uncertainty Attribution for Sequential Recommendation
SIGIR '24: Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information RetrievalPages 2401–2405https://doi.org/10.1145/3626772.3657900Sequential recommendation systems suggest products based on users' historical behaviours. The inherent sparsity of user-item interactions in a vast product space often leads to unreliable recommendations. Recent research addresses this challenge by ...
- research-articleNovember 2024
MENDNet: Just-in-time Fault Detection and Mitigation in AI Systems with Uncertainty Quantification and Multi-Exit Networks
DAC '24: Proceedings of the 61st ACM/IEEE Design Automation ConferenceArticle No.: 247, Pages 1–6https://doi.org/10.1145/3649329.3656506Hardware faults in AI accelerators, particularly in accelerator memory, can alter pre-trained deep neural network parameters, leading to errors that compromise performance. To address this, just-intime (JIT) fault detection and mitigation are crucial. ...
- research-articleMay 2024
Certain and Approximately Certain Models for Statistical Learning
Proceedings of the ACM on Management of Data (PACMMOD), Volume 2, Issue 3Article No.: 126, Pages 1–25https://doi.org/10.1145/3654929Real-world data is often incomplete and contains missing values. To train accurate models over real-world datasets, users need to spend a substantial amount of time and resources imputing and finding proper values for missing data items. In this paper, ...
- short-paperMay 2024
Uncertainty-Aware Pre-Trained Foundation Models for Patient Risk Prediction via Gaussian Process
WWW '24: Companion Proceedings of the ACM Web Conference 2024Pages 1162–1165https://doi.org/10.1145/3589335.3651456Patient risk prediction models are crucial as they enable healthcare providers to proactively identify and address potential health risks. Large pre-trained foundation models offer remarkable performance in risk prediction tasks by analyzing multimodal ...
- research-articleMay 2024
Predictive Relevance Uncertainty for Recommendation Systems
WWW '24: Proceedings of the ACM Web Conference 2024Pages 3900–3909https://doi.org/10.1145/3589334.3645689Click-through Rate (CTR) module is the foundation block of recommendation system and used for search, content selection, advertising, video streaming etc. CTR is modelled as a classification problem and extensive research is done to improve the CTR ...