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Multimodal representation learning aims to construct a shared embedding space in which heterogeneous modalities are semantically aligned. Despite strong empirical results, InfoNCE-based objectives introduce inherent conflicts that yield…

Machine Learning · Computer Science 2026-02-11 Wenzhe Yin , Pan Zhou , Zehao Xiao , Jie Liu , Shujian Yu , Jan-Jakob Sonke , Efstratios Gavves

Learning multi-modal representations is an essential step towards real-world robotic applications, and various multi-modal fusion models have been developed for this purpose. However, we observe that existing models, whose objectives are…

Machine Learning · Computer Science 2021-06-22 Chenzhuang Du , Tingle Li , Yichen Liu , Zixin Wen , Tianyu Hua , Yue Wang , Hang Zhao

Multimodal federated learning (MFL) has emerged as a decentralized machine learning paradigm, allowing multiple clients with different modalities to collaborate on training a global model across diverse data sources without sharing their…

Machine Learning · Computer Science 2025-03-07 Huy Q. Le , Chu Myaet Thwal , Yu Qiao , Ye Lin Tun , Minh N. H. Nguyen , Eui-Nam Huh , Choong Seon Hong

The strength of multimodal learning lies in its ability to integrate information from various sources, providing rich and comprehensive insights. However, in real-world scenarios, multi-modal systems often face the challenge of dynamic…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Xiyuan Gao , Bing Cao , Pengfei Zhu , Nannan Wang , Qinghua Hu

This paper investigates how to better leverage large-scale pre-trained uni-modal models to further enhance discriminative multi-modal learning. Even when fine-tuned with only uni-modal data, these models can outperform previous multi-modal…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Chenzhuang Du , Yue Zhao , Chonghua Liao , Jiacheng You , Jie Fu , Hang Zhao

Multimodal representation learning harmonizes distinct modalities by aligning them into a unified latent space. Recent research generalizes traditional cross-modal alignment to produce enhanced multimodal synergy but requires all modalities…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Xiaohao Liu , Xiaobo Xia , Jiaheng Wei , Shuo Yang , Xiu Su , See-Kiong Ng , Tat-Seng Chua

Multimodal learning has gained attention for its capacity to integrate information from different modalities. However, it is often hindered by the multimodal imbalance problem, where certain modality dominates while others remain…

Machine Learning · Computer Science 2025-06-16 Shaoxuan Xu , Menglu Cui , Chengxiang Huang , Hongfa Wang , Di Hu

Missing modalities present a fundamental challenge in multimodal models, often causing catastrophic performance degradation. Our observations suggest that this fragility stems from an imbalanced learning process, where the model develops an…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Siqi Lu , Wanying Xu , Yongbin Zheng , Wenting Luan , Peng Sun , Jianhang Yao

Gradient-based meta-learners such as MAML are able to learn a meta-prior from similar tasks to adapt to novel tasks from the same distribution with few gradient updates. One important limitation of such frameworks is that they seek a common…

Machine Learning · Computer Science 2018-12-19 Risto Vuorio , Shao-Hua Sun , Hexiang Hu , Joseph J. Lim

Multi-task learning (MTL) aims to build general-purpose vision systems by training a single network to perform multiple tasks jointly. While promising, its potential is often hindered by "unbalanced optimization", where task interference…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Yihang Guo , Tianyuan Yu , Liang Bai , Yanming Guo , Yirun Ruan , William Li , Weishi Zheng

Traditional multimodal learners find unified representations for tasks like visual question answering, but rely heavily on paired datasets. However, an overlooked yet potentially powerful question is: can one leverage auxiliary unpaired…

Machine Learning · Computer Science 2025-10-10 Sharut Gupta , Shobhita Sundaram , Chenyu Wang , Stefanie Jegelka , Phillip Isola

Recently, Multimodal Learning (MML) has gained significant interest as it compensates for single-modality limitations through comprehensive complementary information within multimodal data. However, traditional MML methods generally use the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Yunfeng Fan , Wenchao Xu , Haozhao Wang , Junhong Liu , Song Guo

Multimodal video understanding plays a crucial role in tasks such as action recognition and emotion classification by combining information from different modalities. However, multimodal models are prone to overfitting strong modalities,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Xiaoyu Ma , Ding Ding , Hao Chen

Multimodal information retrieval (MIR) faces inherent challenges due to the heterogeneity of data sources and the complexity of cross-modal alignment. While previous studies have identified modal gaps in feature spaces, a systematic…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Fanheng Kong , Jingyuan Zhang , Yahui Liu , Hongzhi Zhang , Shi Feng , Xiaocui Yang , Daling Wang , Yu Tian , Victoria W. , Fuzheng Zhang , Guorui Zhou

Multimodal learning has developed very fast in recent years. However, during the multimodal training process, the model tends to rely on only one modality based on which it could learn faster, thus leading to inadequate use of other…

Machine Learning · Computer Science 2024-11-05 Zirun Guo , Tao Jin , Jingyuan Chen , Zhou Zhao

Multi-Objective Reinforcement Learning (MORL) is a generalization of traditional Reinforcement Learning (RL) that aims to optimize multiple, often conflicting objectives simultaneously rather than focusing on a single reward. This approach…

Machine Learning · Computer Science 2025-08-15 Davide Guidobene , Lorenzo Benedetti , Diego Arapovic

Multi-objective reinforcement learning (MORL) is the generalization of standard reinforcement learning (RL) approaches to solve sequential decision making problems that consist of several, possibly conflicting, objectives. Generally, in…

Artificial Intelligence · Computer Science 2019-10-08 Xi Chen , Ali Ghadirzadeh , Mårten Björkman , Patric Jensfelt

Multi-modal models have shown a promising capability to effectively integrate information from various sources, yet meanwhile, they are found vulnerable to pervasive perturbations, such as uni-modal attacks and missing conditions. To…

Computer Vision and Pattern Recognition · Computer Science 2024-04-19 Zequn Yang , Yake Wei , Ce Liang , Di Hu

Learning-enabled control systems increasingly rely on multiple sensing modalities (e.g., vision, audio, language, etc.) for perception and decision support. A key challenge is that multi-modal sensor training dynamics are often imbalanced:…

Machine Learning · Computer Science 2026-04-01 Heshan Fernando , Quan Xiao , Parikshit Ram , Yi Zhou , Horst Samulowitz , Nathalie Baracaldo , Tianyi Chen

Missing modalities consistently lead to significant performance degradation in multimodal models. Existing approaches either synthesize missing modalities at high computational cost or apply prompt-based fine-tuning that relies only on…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Hongye Zhu , Xuan Liu , Yanwen Ba , Jingye Xue , Shigeng Zhang