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The integration of multimodal data presents a challenge in cases when the study of a given phenomena by different instruments or conditions generates distinct but related domains. Many existing data integration methods assume a known…

Machine Learning · Statistics 2022-06-16 Andres F. Duque , Guy Wolf , Kevin R. Moon

Augmenting algorithms with learned predictions is a promising approach for going beyond worst-case bounds. Dinitz, Im, Lavastida, Moseley, and Vassilvitskii~(2021) have demonstrated that a warm start with learned dual solutions can improve…

Machine Learning · Computer Science 2022-05-23 Shinsaku Sakaue , Taihei Oki

Score-based diffusion models have significantly advanced generative deep learning for image processing. Measurement conditioned models have also been applied to inverse problems such as CT reconstruction. However, the conventional approach,…

Medical Physics · Physics 2025-02-24 Matthew Tivnan , Dufan Wu , Quanzheng Li

Semantic segmentation of histopathology images under class imbalance is typically addressed through frequency-based loss reweighting, which implicitly assumes that rare classes are difficult. However, true difficulty also arises from…

Image and Video Processing · Electrical Eng. & Systems 2026-04-16 Lakmali Nadeesha Kumari , Sen-Ching Samson Cheung

Purpose: To accelerate radially sampled diffusion weighted spin-echo (Rad-DW-SE) acquisition method for generating high quality apparent diffusion coefficient (ADC) maps. Methods: A deep learning method was developed to generate accurate…

Image and Video Processing · Electrical Eng. & Systems 2023-08-15 Yuemeng Li , Miguel Romanello Joaquim , Stephen Pickup , Hee Kwon Song , Rong Zhou , Yong Fan

Machine learning models are prone to capturing the spurious correlations between non-causal attributes and classes, with counterfactual data augmentation being a promising direction for breaking these spurious associations. However,…

Machine Learning · Computer Science 2025-07-11 Xiaoling Zhou , Ou Wu , Michael K. Ng

Due to the limited availability of medical data, deep learning approaches for medical image analysis tend to generalise poorly to unseen data. Augmenting data during training with random transformations has been shown to help and became a…

Image and Video Processing · Electrical Eng. & Systems 2022-10-04 Tian Xia , Pedro Sanchez , Chen Qin , Sotirios A. Tsaftaris

Uncertainty estimation is a crucial aspect of deploying dependable deep learning models in safety-critical systems. In this study, we introduce a novel and efficient method for deterministic uncertainty estimation called Discriminant…

Machine Learning · Computer Science 2024-02-21 Jiaxin Zhang , Kamalika Das , Sricharan Kumar

In the present paper we consider the problem of Laplace deconvolution with noisy discrete observations. The study is motivated by Dynamic Contrast Enhanced imaging using a bolus of contrast agent, a procedure which allows considerable…

Statistics Theory · Mathematics 2012-07-12 Fabienne Comte , Charles-André Cuénod , Marianna Pensky , Yves Rozenholc

We developed deep learning models for predicting Total Knee Replacement (TKR) need within various time horizons in knee osteoarthritis patients, with a novel capability: the models can perform TKR prediction using a single scan, and…

Image and Video Processing · Electrical Eng. & Systems 2025-03-31 Haresh Rengaraj Rajamohan , Richard Kijowski , Kyunghyun Cho , Cem M. Deniz

Synthesizing longitudinal medical images at controllable disease stages while preserving patient-specific anatomy is hindered by the entanglement of pathological textures and structural features. We address this challenge for ulcerative…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Umut Dundar , Alptekin Temizel

The quantification of the coronary artery stenosis is of significant clinical importance in coronary artery disease diagnosis and intervention treatment. It aims to quantify the morphological indices of the coronary artery lesions such as…

Image and Video Processing · Electrical Eng. & Systems 2020-08-11 Dong Zhang , Guang Yang , Shu Zhao , Yanping Zhang , Heye Zhang , Shuo Li

Offline reinforcement learning (RL) enables policy learning from pre-collected offline datasets, relaxing the need to interact directly with the environment. However, limited by the quality of offline datasets, it generally fails to learn…

Machine Learning · Computer Science 2025-09-03 Xingshuai Huang , Di Wu , Benoit Boulet

Visual counterfactual explanations are ideal hypothetical images that change the decision-making of the classifier with high confidence toward the desired class while remaining visually plausible and close to the initial image. In this…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Tung Luu , Nam Le , Duc Le , Bac Le

Protein inverse folding is a fundamental problem in bioinformatics, aiming to recover the amino acid sequences from a given protein backbone structure. Despite the success of existing methods, they struggle to fully capture the intricate…

Machine Learning · Computer Science 2024-12-13 Chenglin Wang , Yucheng Zhou , Zijie Zhai , Jianbing Shen , Kai Zhang

Canine cardiomegaly, marked by an enlarged heart, poses serious health risks if undetected, requiring accurate diagnostic methods. Current detection models often rely on small, poorly annotated datasets and struggle to generalize across…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Shiman Zhang , Lakshmikar Reddy Polamreddy , Youshan Zhang

To make reinforcement learning more sample efficient, we need better credit assignment methods that measure an action's influence on future rewards. Building upon Hindsight Credit Assignment (HCA), we introduce Counterfactual Contribution…

Machine Learning · Computer Science 2023-11-01 Alexander Meulemans , Simon Schug , Seijin Kobayashi , Nathaniel Daw , Gregory Wayne

Most ML datasets today contain biases. When we train models on these datasets, they often not only learn these biases but can worsen them -- a phenomenon known as bias amplification. Several co-occurrence-based metrics have been proposed to…

Computer Vision and Pattern Recognition · Computer Science 2025-11-03 Bhanu Tokas , Rahul Nair , Hannah Kerner

Limited-Angle Computed Tomography (LACT) is a non-destructive evaluation technique used in a variety of applications ranging from security to medicine. The limited angle coverage in LACT is often a dominant source of severe artifacts in the…

Image and Video Processing · Electrical Eng. & Systems 2022-11-23 Jiaming Liu , Rushil Anirudh , Jayaraman J. Thiagarajan , Stewart He , K. Aditya Mohan , Ulugbek S. Kamilov , Hyojin Kim

Recommendation systems often rely on implicit feedback, where only positive user-item interactions can be observed. Negative sampling is therefore crucial to provide proper negative training signals. However, existing methods tend to…

Information Retrieval · Computer Science 2026-01-06 Na Li , Fanghui Sun , Yan Zou , Yangfu Zhu , Xiatian Zhu , Ying Ma