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Alignment methodologies have emerged as a critical pathway for enhancing language model alignment capabilities. While SFT (supervised fine-tuning) accelerates convergence through direct token-level loss intervention, its efficacy is…

The application of reinforcement learning (RL) to enhance the reasoning capabilities of Multimodal Large Language Models (MLLMs) constitutes a rapidly advancing research area. While MLLMs extend Large Language Models (LLMs) to handle…

Artificial Intelligence · Computer Science 2025-05-22 Guanghao Zhou , Panjia Qiu , Cen Chen , Jie Wang , Zheming Yang , Jian Xu , Minghui Qiu

Post-training with Reinforcement Learning (RL) has substantially improved reasoning in Large Language Models (LLMs) via test-time scaling. However, extending this paradigm to Multimodal LLMs (MLLMs) through verbose rationales yields limited…

Computation and Language · Computer Science 2026-02-16 Bangzheng Li , Jianmo Ni , Chen Qu , Ian Miao , Liu Yang , Xingyu Fu , Muhao Chen , Derek Zhiyuan Cheng

Text-to-motion generation has advanced with diffusion- and flow-based generative models, yet supervised pretraining remains insufficient to align models with high-level objectives such as semantic consistency, realism, and human preference.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Xiaofeng Tan , Wanjiang Weng , Hongsong Wang , Fang Zhao , Xin Geng , Liang Wang

Reinforcement Learning with Verifiable Rewards (RLVR) has proven effective for Large Language Model (LLM) reasoning, yet current methods face key challenges in resource allocation and policy optimization dynamics: (i) uniform rollout…

Machine Learning · Computer Science 2026-04-24 Yangyi Fang , Jiaye Lin , Xiaoliang Fu , Cong Qin , Haolin Shi , Chaowen Hu , Lu Pan , Ke Zeng , Xunliang Cai

Cross-domain offline reinforcement learning (RL) aims to train a well-performing agent in the target environment, leveraging both a limited target domain dataset and a source domain dataset with (possibly) sufficient data coverage. Due to…

Machine Learning · Computer Science 2026-03-23 Zhongjian Qiao , Rui Yang , Jiafei Lyu , Chenjia Bai , Xiu Li , Siyang Gao , Shuang Qiu

We propose the first joint audio-video generation framework that brings engaging watching and listening experiences simultaneously, towards high-quality realistic videos. To generate joint audio-video pairs, we propose a novel Multi-Modal…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Ludan Ruan , Yiyang Ma , Huan Yang , Huiguo He , Bei Liu , Jianlong Fu , Nicholas Jing Yuan , Qin Jin , Baining Guo

Despite strong generalization capabilities, Vision-Language-Action (VLA) models remain constrained by the high cost of expert demonstrations and limited real-world interaction. While online reinforcement learning (RL) has shown promise, its…

Medical multi-modal learning is critical for integrating information from a large set of diverse modalities. However, when leveraging a high number of modalities in real clinical applications, it is often impractical to obtain full-modality…

Machine Learning · Computer Science 2026-03-03 Chenwei Wu , Zitao Shuai , Liyue Shen

As the last pivotal stage of Recommender System (RS), Multi-Task Fusion (MTF) is responsible for combining multiple scores outputted by Multi-Task Learning (MTL) model into a final score to maximize user satisfaction. Recently, to optimize…

Information Retrieval · Computer Science 2025-09-25 Peng Liu , Cong Xu , Ming Zhao , Jiawei Zhu , Bin Wang , Yi Ren

We present Omni-Video 2, a scalable and computationally efficient model that connects pretrained multimodal large-language models (MLLMs) with video diffusion models for unified video generation and editing. Our key idea is to exploit the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Hao Yang , Zhiyu Tan , Jia Gong , Luozheng Qin , Hesen Chen , Xiaomeng Yang , Yuqing Sun , Yuetan Lin , Mengping Yang , Hao Li

While large-scale diffusion models have revolutionized video synthesis, achieving precise control over both multi-subject identity and multi-granularity motion remains a significant challenge. Recent attempts to bridge this gap often suffer…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Yujie Wei , Xinyu Liu , Shiwei Zhang , Hangjie Yuan , Jinbo Xing , Zhekai Chen , Xiang Wang , Haonan Qiu , Rui Zhao , Yutong Feng , Ruihang Chu , Yingya Zhang , Yike Guo , Xihui Liu , Hongming Shan

Offline reinforcement learning (RL) optimizes the policy on a previously collected dataset without any interactions with the environment, yet usually suffers from the distributional shift problem. To mitigate this issue, a typical solution…

Machine Learning · Computer Science 2023-09-06 Qisen Yang , Shenzhi Wang , Qihang Zhang , Gao Huang , Shiji Song

Advanced wireless networks must support highly dynamic and heterogeneous service demands. Open Radio Access Network (O-RAN) architecture enables this flexibility by adopting modular, disaggregated components, such as the RAN Intelligent…

Machine Learning · Computer Science 2025-06-03 Fatemeh Lotfi , Hossein Rajoli , Fatemeh Afghah

Diffusion Models (DMs), as a leading class of generative models, offer key advantages for reinforcement learning (RL), including multi-modal expressiveness, stable training, and trajectory-level planning. This survey delivers a…

Machine Learning · Computer Science 2025-10-15 Changfu Xu , Jianxiong Guo , Yuzhu Liang , Haiyang Huang , Haodong Zou , Xi Zheng , Shui Yu , Xiaowen Chu , Jiannong Cao , Tian Wang

We introduce OmnixR, an evaluation suite designed to benchmark SoTA Omni-modality Language Models, such as GPT-4o and Gemini. Evaluating OLMs, which integrate multiple modalities such as text, vision, and audio, presents unique challenges.…

Artificial Intelligence · Computer Science 2024-10-17 Lichang Chen , Hexiang Hu , Mingda Zhang , Yiwen Chen , Zifeng Wang , Yandong Li , Pranav Shyam , Tianyi Zhou , Heng Huang , Ming-Hsuan Yang , Boqing Gong

Offline Reinforcement Learning (RL) is structured to derive policies from static trajectory data without requiring real-time environment interactions. Recent studies have shown the feasibility of framing offline RL as a sequence modeling…

Machine Learning · Computer Science 2023-09-01 Abdelghani Ghanem , Philippe Ciblat , Mounir Ghogho

Multimodal retrieval is the task of aggregating information from queries across heterogeneous modalities to retrieve desired targets. State-of-the-art multimodal retrieval models can understand complex queries, yet they are typically…

Information Retrieval · Computer Science 2026-03-25 Chuong Huynh , Manh Luong , Abhinav Shrivastava

Omni Large Language Models (Omni-LLMs) have demonstrated impressive capabilities in holistic multi-modal perception, yet they consistently falter in complex scenarios requiring synergistic omni-modal reasoning. Beyond understanding global…

Computation and Language · Computer Science 2026-04-08 Hongcheng Liu , Yuhao Wang , Zhe Chen , Pingjie Wang , Zhiyuan Zhu , Yixuan Hou , Yanfeng Wang , Yu Wang

Research on multi-modal learning dominantly aligns the modalities in a unified space at training, and only a single one is taken for prediction at inference. However, for a real machine, e.g., a robot, sensors could be added or removed at…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Yuanhuiyi Lyu , Xu Zheng , Dahun Kim , Lin Wang