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Parallelism is a ubiquitous method for accelerating machine learning algorithms. However, theoretical analysis of parallel learning is usually done in an algorithm- and protocol-specific setting, giving little insight about how changes in…

Machine Learning · Computer Science 2020-06-09 Yucheng Lu , Jack Nash , Christopher De Sa

Collaborative filtering is an important technique for recommendation. Whereas it has been repeatedly shown to be effective in previous work, its performance remains unsatisfactory in many real-world applications, especially those where the…

Information Retrieval · Computer Science 2018-08-15 Zhiyu Min , Dahua Lin

This paper studies the problem of jointly estimating multiple network processes driven by a common unknown input, thus effectively generalizing the classical blind multi-channel identification problem to graphs. More precisely, we model…

Signal Processing · Electrical Eng. & Systems 2019-10-01 Yu Zhu , Fernando J. Iglesias , Antonio G. Marques , Santiago Segarra

Repeated Sampling (RS) is a simple inference-time algorithm that has been shown to improve model performance on complex tasks. Although it is an effective way of scaling inference time, it often struggles to generate diverse solution…

Artificial Intelligence · Computer Science 2026-02-17 Divij Handa , Mihir Parmar , Aswin RRV , Md Nayem Uddin , Hamid Palangi , Chitta Baral

We introduce a novel approach for concept blending in pretrained text-to-image diffusion models, aiming to generate images at the intersection of multiple text prompts. At each time step during diffusion denoising, our algorithm forecasts…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Divya Kothandaraman , Ming Lin , Dinesh Manocha

We consider particle filters with weakly informative observations (or `potentials') relative to the latent state dynamics. The particular focus of this work is on particle filters to approximate time-discretisations of continuous-time…

Computation · Statistics 2022-07-12 Nicolas Chopin , Sumeetpal S. Singh , Tomás Soto , Matti Vihola

The success of convolutional neural networks (CNNs) in computer vision applications has been accompanied by a significant increase of computation and memory costs, which prohibits its usage on resource-limited environments such as mobile or…

Computer Vision and Pattern Recognition · Computer Science 2019-03-25 Shaohui Lin , Rongrong Ji , Yuchao Li , Cheng Deng , Xuelong Li

In multimedia understanding tasks, corrupted samples pose a critical challenge, because when fed to machine learning models they lead to performance degradation. In the past, three groups of approaches have been proposed to handle noisy…

Computer Vision and Pattern Recognition · Computer Science 2024-03-01 Francesco Barbato , Umberto Michieli , Mehmet Kerim Yucel , Pietro Zanuttigh , Mete Ozay

Noise is an inevitable aspect of point cloud acquisition, necessitating filtering as a fundamental task within the realm of 3D vision. Existing learning-based filtering methods have shown promising capabilities on small-scale synthetic or…

Multimedia · Computer Science 2025-01-10 Qingyuan Zhou , Weidong Yang , Ben Fei , Jingyi Xu , Rui Zhang , Keyi Liu , Yeqi Luo , Ying He

Recommender systems have become integral to our digital experiences, from online shopping to streaming platforms. Still, the rationale behind their suggestions often remains opaque to users. While some systems employ a graph-based approach,…

A core task in process mining is process discovery which aims to learn an accurate process model from event log data. In this paper, we propose to use (block-) structured programs directly as target process models so as to establish…

Artificial Intelligence · Computer Science 2020-08-14 Dell Zhang , Alexander Kuhnle , Julian Richardson , Murat Sensoy

Collaborative Filtering (CF) is one of the most commonly used recommendation methods. CF consists in predicting whether, or how much, a user will like (or dislike) an item by leveraging the knowledge of the user's preferences as well as…

Information Retrieval · Computer Science 2018-07-17 Mohamed Reda Bouadjenek , Esther Pacitti , Maximilien Servajean , Florent Masseglia , Amr El Abbadi

Due to the development of graph neural networks, graph-based representation learning methods have made great progress in recommender systems. However, data sparsity is still a challenging problem that most graph-based recommendation methods…

Information Retrieval · Computer Science 2021-10-25 Chaoyang Wang , Zhiqiang Guo , Guohui Li , Jianjun Li , Peng Pan , Ke Liu

Graph-based collaborative filtering has emerged as a powerful paradigm for delivering personalized recommendations. Despite their demonstrated effectiveness, these methods often neglect the underlying intents of users, which constitute a…

Information Retrieval · Computer Science 2023-09-25 Jiahao Wu , Wenqi Fan , Shengcai Liu , Qijiong Liu , Qing Li , Ke Tang

The sequential recommendation system has been widely studied for its promising effectiveness in capturing dynamic preferences buried in users' sequential behaviors. Despite the considerable achievements, existing methods usually focus on…

Information Retrieval · Computer Science 2023-11-07 Mingjia Yin , Hao Wang , Xiang Xu , Likang Wu , Sirui Zhao , Wei Guo , Yong Liu , Ruiming Tang , Defu Lian , Enhong Chen

In this paper we introduce the first application of the Belief Propagation (BP) algorithm in the design of recommender systems. We formulate the recommendation problem as an inference problem and aim to compute the marginal probability…

Machine Learning · Computer Science 2012-09-25 Erman Ayday , Arash Einolghozati , Faramarz Fekri

Diffusion probabilistic models have achieved remarkable success in generative tasks across diverse data types. While recent studies have explored alternative degradation processes beyond Gaussian noise, this paper bridges two key diffusion…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Hao-Chien Hsueh , Chi-En Yen , Wen-Hsiao Peng , Ching-Chun Huang

Beam search is a go-to strategy for decoding neural sequence models. The algorithm can naturally be viewed as a subset optimization problem, albeit one where the corresponding set function does not reflect interactions between candidates.…

Computation and Language · Computer Science 2023-06-26 Clara Meister , Martina Forster , Ryan Cotterell

The rise of Large Language Models (LLMs) has sparked interest in their application to sequential recommendation tasks as they can provide supportive item information. However, due to the inherent complexities of sequential recommendation,…

Information Retrieval · Computer Science 2023-12-19 Yu Wang , Zhiwei Liu , Jianguo Zhang , Weiran Yao , Shelby Heinecke , Philip S. Yu

Person image generation aims to perform non-rigid deformation on source images, which generally requires unaligned data pairs for training. Recently, self-supervised methods express great prospects in this task by merging the disentangled…

Computer Vision and Pattern Recognition · Computer Science 2022-12-15 Zijian Wang , Xingqun Qi , Kun Yuan , Muyi Sun