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Despite the success of Large-Vision Language Models (LVLMs), general optimization objectives (e.g., standard MLE) fail to constrain visual trajectories, leading to language bias and hallucination. To mitigate this, current methods introduce…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Yangfu Li , Yuning Gong , Hongjian Zhan , Teng Li , Yuanhuiyi Lyu , Tianyi Chen , Qi Liu , Ziyuan Huang , Zhihang Zhong , Dandan Zheng , Yue Lu

Recent advancements in recommender systems have focused on leveraging Large Language Models (LLMs) to improve user preference modeling, yielding promising outcomes. However, current LLM-based approaches struggle to fully leverage user…

Information Retrieval · Computer Science 2024-10-31 Yang Zhang , Juntao You , Yimeng Bai , Jizhi Zhang , Keqin Bao , Wenjie Wang , Tat-Seng Chua

In the past decades, recommender systems have attracted much attention in both research and industry communities, and a large number of studies have been devoted to developing effective recommendation models. Basically speaking, these…

Information Retrieval · Computer Science 2023-05-12 Junjie Zhang , Ruobing Xie , Yupeng Hou , Wayne Xin Zhao , Leyu Lin , Ji-Rong Wen

Recent progress in flow-based generative models and reinforcement learning (RL) has improved text-image alignment and visual quality. However, current RL training for flow models still has two main problems: (i) GRPO-style fixed per-prompt…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Kaijie Chen , Zhiyang Xu , Ying Shen , Zihao Lin , Yuguang Yao , Lifu Huang

Video Large Language Models (Video LLMs) have achieved significant success by adopting the paradigm of large-scale pre-training followed by supervised fine-tuning (SFT). However, existing approaches struggle with temporal reasoning due to…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Shicheng Li , Lei Li , Kun Ouyang , Shuhuai Ren , Yuanxin Liu , Yuanxing Zhang , Fuzheng Zhang , Lingpeng Kong , Qi Liu , Xu Sun

While the recent developments in large language models (LLMs) have successfully enabled generative recommenders with natural language interactions, their recommendation behavior is limited, leaving other simpler yet crucial components such…

Information Retrieval · Computer Science 2025-10-09 Seungheon Doh , Keunwoo Choi , Juhan Nam

Multimedia systems underpin modern digital interactions, facilitating seamless integration and optimization of resources across diverse multimedia applications. To meet growing personalization demands, multimedia systems must efficiently…

Multimedia · Computer Science 2025-08-26 Yili Jin , Ling Pan , Rui-Xiao Zhang , Jiangchuan Liu , Xue Liu

Sequential recommender systems are essential for discerning user preferences from historical interactions and facilitating targeted recommendations. Recent innovations employing Large Language Models (LLMs) have advanced the field by…

Information Retrieval · Computer Science 2024-09-04 Xinyu Zhang , Linmei Hu , Luhao Zhang , Dandan Song , Heyan Huang , Liqiang Nie

Utilizing powerful Large Language Models (LLMs) for generative recommendation has attracted much attention. Nevertheless, a crucial challenge is transforming recommendation data into the language space of LLMs through effective item…

Information Retrieval · Computer Science 2025-10-21 Wenjie Wang , Honghui Bao , Xinyu Lin , Jizhi Zhang , Yongqi Li , Fuli Feng , See-Kiong Ng , Tat-Seng Chua

Supervised fine-tuning (SFT) is computationally efficient but often yields inferior generalization compared to reinforcement learning (RL). This gap is primarily driven by RL's use of on-policy data. We propose a framework to bridge this…

Machine Learning · Computer Science 2026-03-17 Miaosen Zhang , Yishan Liu , Shuxia Lin , Xu Yang , Qi Dai , Chong Luo , Weihao Jiang , Peng Hou , Anxiang Zeng , Xin Geng , Baining Guo

Generative Flow Networks (GFlowNets) have been shown effective to generate combinatorial objects with desired properties. We here propose a new GFlowNet training framework, with policy-dependent rewards, that bridges keeping flow balance of…

Machine Learning · Computer Science 2025-06-04 Puhua Niu , Shili Wu , Mingzhou Fan , Xiaoning Qian

Many score-based active learning methods have been successfully applied to graph-structured data, aiming to reduce the number of labels and achieve better performance of graph neural networks based on predefined score functions. However,…

Machine Learning · Computer Science 2023-04-25 Yinchuan Li , Zhigang Li , Wenqian Li , Yunfeng Shao , Yan Zheng , Jianye Hao

In recent years, Large Language Models (LLMs) have shown remarkable performance in generating human-like text, proving to be a valuable asset across various applications. However, adapting these models to incorporate new, out-of-domain…

Recent self-rewarding large language models (LLM) have successfully applied LLM-as-a-Judge to iteratively improve the alignment performance without the need of human annotations for preference data. These methods commonly utilize the same…

Machine Learning · Computer Science 2025-04-29 Zhaoyang Wang , Weilei He , Zhiyuan Liang , Xuchao Zhang , Chetan Bansal , Ying Wei , Weitong Zhang , Huaxiu Yao

Large language model (LLM)-based search agents have proven promising for addressing knowledge-intensive problems by incorporating information retrieval capabilities. Existing works largely focus on optimizing the reasoning paradigms of…

Artificial Intelligence · Computer Science 2026-01-09 Tongyu Wen , Guanting Dong , Zhicheng Dou

Process reward models (PRMs) have shown success in complex reasoning tasks for large language models (LLMs). However, their application to machine translation (MT) remains underexplored due to the lack of systematic methodologies and…

Computation and Language · Computer Science 2025-09-22 Zhaopeng Feng , Jiahan Ren , Jiayuan Su , Jiamei Zheng , Hongwei Wang , Zuozhu Liu

Large language models (LLMs) have shown great promise in recommender systems, where supervised fine-tuning (SFT) is commonly used for adaptation. Subsequent studies further introduce preference learning to incorporate negative samples into…

Information Retrieval · Computer Science 2026-02-20 Bingqian Li , Bowen Zheng , Xiaolei Wang , Long Zhang , Jinpeng Wang , Sheng Chen , Wayne Xin Zhao , Ji-rong Wen

Instruction tuning, a specialized technique to enhance large language model (LLM) performance via instruction datasets, relies heavily on the quality of employed data. Existing quality improvement methods alter instruction data through…

Computation and Language · Computer Science 2023-12-29 Yang Xu , Yongqiang Yao , Yufan Huang , Mengnan Qi , Maoquan Wang , Bin Gu , Neel Sundaresan

Recommender systems leverage extensive user interaction data to model preferences; however, directly modeling these data may introduce biases that disproportionately favor popular items. In this paper, we demonstrate that popularity bias…

Information Retrieval · Computer Science 2025-04-21 Jiahao Liu , Dongsheng Li , Hansu Gu , Peng Zhang , Tun Lu , Li Shang , Ning Gu

We present LLM-KT, a flexible framework designed to enhance collaborative filtering (CF) models by seamlessly integrating LLM (Large Language Model)-generated features. Unlike existing methods that rely on passing LLM-generated features as…

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