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Detecting the origin of information or infection spread in networks is a fundamental challenge with applications in misinformation tracking, epidemiology, and beyond. We study the multi-source detection problem: given snapshot observations…

Social and Information Networks · Computer Science 2025-12-02 Xingchao Jian , Purui Zhang , Lan Tian , Feng Ji , Wenfei Liang , Wee Peng Tay , Bihan Wen , Felix Krahmer

Machine learning models are essential tools in various domains, but their performance can degrade over time due to changes in data distribution or other factors. On one hand, detecting and addressing such degradations is crucial for…

Machine Learning · Computer Science 2023-09-28 Florian Heinrichs

Multimodal Recommendation (MMR) systems are crucial for modern platforms but are often hampered by inherent noise and uncertainty in modal features, such as blurry images, diverse visual appearances, or ambiguous text. Existing methods…

Information Retrieval · Computer Science 2026-01-28 Xinzhuo Wu , Hongbo Wang , Yuan Lin , Kan Xu , Liang Yang , Hongfei Lin

Traditional approaches for color propagation in videos rely on some form of matching between consecutive video frames. Using appearance descriptors, colors are then propagated both spatially and temporally. These methods, however, are…

Computer Vision and Pattern Recognition · Computer Science 2018-08-10 Simone Meyer , Victor Cornillère , Abdelaziz Djelouah , Christopher Schroers , Markus Gross

The encoder-decoder based methods for semi-supervised video object segmentation (Semi-VOS) have received extensive attention due to their superior performances. However, most of them have complex intermediate networks which generate strong…

Computer Vision and Pattern Recognition · Computer Science 2020-06-03 Suhwan Cho , MyeongAh Cho , Tae-young Chung , Heansung Lee , Sangyoun Lee

Interactive segmentation aims to segment the specified target on the image with positive and negative clicks from users. Interactive ambiguity is a crucial issue in this field, which refers to the possibility of multiple compliant outcomes…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Zheng Lin , Nan Zhou , Chen-Xi Du , Deng-Ping Fan , Shi-Min Hu

Despite diffusion models' superior capabilities in modeling complex distributions, there are still non-trivial distributional discrepancies between generated and ground-truth images, which has resulted in several notable problems in image…

Computer Vision and Pattern Recognition · Computer Science 2024-10-08 Yujian Liu , Yang Zhang , Tommi Jaakkola , Shiyu Chang

Proper quantification and propagation of uncertainties in computational simulations are of critical importance. This issue is especially challenging for CFD applications. A particular obstacle for uncertainty quantifications in CFD problems…

Computational Physics · Physics 2018-04-10 Jian-xun Wang , Christopher J. Roy , Heng Xiao

The performance of neural network models deteriorates due to their unreliable behavior on non-robust features of corrupted samples. Owing to their opaque nature, rectifying models to address this problem often necessitates arduous data…

Machine Learning · Computer Science 2026-03-18 Peiyu Yang , Naveed Akhtar , Jiantong Jiang , Ajmal Mian

Confidence estimation, a task that aims to evaluate the trustworthiness of the model's prediction output during deployment, has received lots of research attention recently, due to its importance for the safe deployment of deep models.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-14 Haoxuan Qu , Yanchao Li , Lin Geng Foo , Jason Kuen , Jiuxiang Gu , Jun Liu

We address the problem of semi-supervised video object segmentation (VOS), where the masks of objects of interests are given in the first frame of an input video. To deal with challenging cases where objects are occluded or missing,…

Computer Vision and Pattern Recognition · Computer Science 2019-04-18 Shuangjie Xu , Daizong Liu , Linchao Bao , Wei Liu , Pan Zhou

We introduce and develop moment propagation for approximate Bayesian inference. This method can be viewed as a variance correction for mean field variational Bayes which tends to underestimate posterior variances. Focusing on the case where…

Computation · Statistics 2022-11-22 John Ormerod , Weichang Yu

We present two practical improvement techniques for unsupervised segmentation learning. These techniques address limitations in the resolution and accuracy of predicted segmentation maps of recent state-of-the-art methods. Firstly, we…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Alp Eren Sari , Francesco Locatello , Paolo Favaro

Current prevailing Video Object Segmentation methods follow the pipeline of extraction-then-matching, which first extracts features on current and reference frames independently, and then performs dense matching between them. This decoupled…

Computer Vision and Pattern Recognition · Computer Science 2025-05-01 Jiaming Zhang , Yutao Cui , Gangshan Wu , Limin Wang

Most video super-resolution methods super-resolve a single reference frame with the help of neighboring frames in a temporal sliding window. They are less efficient compared to the recurrent-based methods. In this work, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Takashi Isobe , Xu Jia , Shuhang Gu , Songjiang Li , Shengjin Wang , Qi Tian

When applied sequentially to video, frame-based networks often exhibit temporal inconsistency - for example, outputs that flicker between frames. This problem is amplified when the network inputs contain time-varying corruptions. In this…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Matthew Dutson , Nathan Labiosa , Yin Li , Mohit Gupta

Object co-segmentation is to segment the shared objects in multiple relevant images, which has numerous applications in computer vision. This paper presents a spatial and semantic modulated deep network framework for object co-segmentation.…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Kaihua Zhang , Jin Chen , Bo Liu , Qingshan Liu

Discrete diffusion has emerged as a powerful framework for generative modeling in discrete domains, yet efficiently sampling from these models remains challenging. Existing sampling strategies often struggle to balance computation and…

Machine Learning · Computer Science 2025-11-12 Yixiu Zhao , Jiaxin Shi , Feng Chen , Shaul Druckmann , Lester Mackey , Scott Linderman

Current semi-supervised video object segmentation (VOS) methods usually leverage the entire features of one frame to predict object masks and update memory. This introduces significant redundant computations. To reduce redundancy, we…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Bo Miao , Mohammed Bennamoun , Yongsheng Gao , Ajmal Mian

Applying an image processing algorithm independently to each video frame often leads to temporal inconsistency in the resulting video. To address this issue, we present a novel and general approach for blind video temporal consistency. Our…

Computer Vision and Pattern Recognition · Computer Science 2022-01-28 Chenyang Lei , Yazhou Xing , Hao Ouyang , Qifeng Chen