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Advances in multimodal models have greatly improved how interactions relevant to various tasks are modeled. Today's multimodal models mainly focus on the correspondence between images and text, using this for tasks like image-text matching.…

Computation and Language · Computer Science 2024-09-27 Haofei Yu , Zhengyang Qi , Lawrence Jang , Ruslan Salakhutdinov , Louis-Philippe Morency , Paul Pu Liang

Over the past decades, improvements in data collection hardware coupled with novel artificial intelligence algorithms have made it possible for researchers to understand urban environments at an unprecedented scale. From local interactions…

Human-Computer Interaction · Computer Science 2024-10-30 Joao Rulff , Giancarlo Pereira , Maryam Hosseini , Marcos Lage , Claudio Silva

Real-world time series exhibit complex and evolving dynamics, making accurate forecasting extremely challenging. Recent multi-modal forecasting methods leverage textual information such as news reports to improve prediction, but most rely…

Machine Learning · Computer Science 2026-01-30 Lige Zhang , Ali Maatouk , Jialin Chen , Leandros Tassiulas , Rex Ying

Mixture of Experts (MoE) are successful models for modeling heterogeneous data in many statistical learning problems including regression, clustering and classification. Generally fitted by maximum likelihood estimation via the well-known…

Machine Learning · Statistics 2018-10-30 Faicel Chamroukhi , Bao-Tuyen Huynh

Clinical decision-making reflects diverse strategies shaped by regional patient populations and institutional protocols. However, most existing medical artificial intelligence (AI) models are trained on highly prevalent data patterns, which…

Predicting human mobility across multiple cities presents significant challenges due to the complex and diverse spatial-temporal dynamics inherent in different urban environments. In this study, we propose a robust approach to predict human…

Machine Learning · Computer Science 2025-07-23 Haoyu He , Haozheng Luo , Qi R. Wang

Preference-based reinforcement learning offers a scalable alternative to manual reward engineering by learning reward structures from comparative feedback. However, large-scale preference datasets, whether collected from crowdsourced…

Robotics · Computer Science 2026-05-04 Ziqin Yuan , Ruiqi Wang , Dezhong Zhao , Baijian Yang , Byung-Cheol Min

Sparse Mixture of Experts (SMoE) enables scalable parameter growth in large language models (LLMs) by selectively activating a subset of experts, and its large parameter count necessitates distributed deployment for inference. However,…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-05-07 Yu Han , Lehan Pan , Jie Peng , Ziyang Tao , Hanqi Zhu , Wuyang Zhang , Yanyong Zhang

Sparse Mixture of Experts (SMoE) enables efficient training of large language models by routing input tokens to a select number of experts. However, training SMoE remains challenging due to the issue of representation collapse. Recent…

Computation and Language · Computer Science 2025-04-01 Giang Do , Hung Le , Truyen Tran

Unified multimodal models aim to jointly enable visual understanding and generation, yet current benchmarks rarely examine their true integration. Existing evaluations either treat the two abilities in isolation or overlook tasks that…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Kai Zou , Ziqi Huang , Yuhao Dong , Shulin Tian , Dian Zheng , Hongbo Liu , Jingwen He , Bin Liu , Yu Qiao , Ziwei Liu

Mixture-of-Experts (MoE) architectures enable conditional computation by activating only a subset of model parameters for each input. Although sparse routing has been highly effective in language models and has also shown promise in vision,…

Machine Learning · Computer Science 2026-04-07 Vadim Vashkelis , Natalia Trukhina

Machine learning models often need to adapt to new data after deployment due to structured or unstructured real-world dynamics. The Continual Learning (CL) framework enables continuous model adaptation, but most existing approaches either…

Machine Learning · Computer Science 2026-03-25 Connor Mclaughlin , Nigel Lee , Lili Su

Large language models are typically deployed as monolithic systems, requiring the full model even when applications need only a narrow subset of capabilities, e.g., code, math, or domain-specific knowledge. Mixture-of-Experts (MoEs)…

Computation and Language · Computer Science 2026-05-12 Ryan Wang , Akshita Bhagia , Sewon Min

Facial recognition systems are susceptible to both physical and digital attacks, posing significant security risks. Traditional approaches often treat these two attack types separately due to their distinct characteristics. Thus, when being…

Computer Vision and Pattern Recognition · Computer Science 2024-08-26 Hang Zou , Chenxi Du , Hui Zhang , Yuan Zhang , Ajian Liu , Jun Wan , Zhen Lei

Mixture-of-Expert (MoE) models have obtained state-of-the-art performance in Neural Machine Translation (NMT) tasks. Existing works in MoE mostly consider a homogeneous design where the same number of experts of the same size are placed…

Linear mixed-effects model (LMM) is a cornerstone of longitudinal data analysis, but is limited to adeptly make heterogeneous analyses predictable under both group-specific fixed effects and subject-specific random effects. To address this…

Methodology · Statistics 2026-03-10 Xinkai Yue , Xiaodong Yan , Haohui Han , Liya Fu

Urbanization challenges underscore the necessity for effective satellite image-text retrieval methods to swiftly access specific information enriched with geographic semantics for urban applications. However, existing methods often overlook…

Computer Vision and Pattern Recognition · Computer Science 2024-04-23 Siru Zhong , Xixuan Hao , Yibo Yan , Ying Zhang , Yangqiu Song , Yuxuan Liang

Urban forecasting has increasingly benefited from high-dimensional spatial data through two primary approaches: graph-based methods that rely on predefined spatial structures, and region-based methods that focus on learning expressive urban…

Artificial Intelligence · Computer Science 2025-06-18 Yuhao Jia , Zile Wu , Shengao Yi , Yifei Sun , Xiao Huang

In this extended abstract, we report on ongoing work towards an approximate multimodal optimization algorithm with asymptotic guarantees. Multimodal optimization is the problem of finding all local optimal solutions (modes) to a path…

Robotics · Computer Science 2021-07-07 Andreas Orthey , Florian T. Pokorny , Marc Toussaint

This project addresses the challenge of human motion prediction, a critical area for applications such as au- tonomous vehicle movement detection. Previous works have emphasized the need for low inference times to provide real time…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Edmund Shieh , Joshua Lee Franco , Kang Min Bae , Tej Lalvani