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While large language models (LLMs) achieve strong performance in recommendation, they face challenges in continual learning as users, items, and user preferences evolve over time. Existing LoRA-based continual methods primarily focus on…

Machine Learning · Computer Science 2026-03-19 Hyunsik Yoo , Ting-Wei Li , SeongKu Kang , Zhining Liu , Charlie Xu , Qilin Qi , Hanghang Tong

Hyperparameter optimization is a crucial problem in Evolutionary Computation. In fact, the values of the hyperparameters directly impact the trajectory taken by the optimization process, and their choice requires extensive reasoning by…

Neural and Evolutionary Computing · Computer Science 2024-08-06 Leonardo Lucio Custode , Fabio Caraffini , Anil Yaman , Giovanni Iacca

Effective emotional support hinges on understanding users' emotions and needs to provide meaningful comfort during multi-turn interactions. Large Language Models (LLMs) show great potential for expressing empathy; however, they often…

Computation and Language · Computer Science 2025-05-23 Jing Ye , Lu Xiang , Yaping Zhang , Chengqing Zong

Rising environmental awareness in e-commerce necessitates recommender systems that not only guide users to sustainable products but also minimize their own digital carbon footprints. Traditional session-based systems, optimized for…

Multiagent Systems · Computer Science 2026-03-12 Hao N. Nguyen , Hieu M. Nguyen , Son Van Nguyen , Nguyen Thi Hanh

Large Language Models (LLMs) have demonstrated remarkable capabilities in reasoning, generalization, and simulating human-like behavior across a wide range of tasks. These strengths present new opportunities to enhance traditional…

Information Retrieval · Computer Science 2025-12-01 Nachiket Subbaraman , Jaskinder Sarai , Aniruddh Nath , Lichan Hong , Lukasz Heldt , Li Wei , Zhe Zhao

Large Language Models (LLMs) are increasingly used as chatbots, yet their ability to personalize responses to user preferences remains limited. We introduce PrefEval, a benchmark for evaluating LLMs' ability to infer, memorize and adhere to…

Machine Learning · Computer Science 2025-02-14 Siyan Zhao , Mingyi Hong , Yang Liu , Devamanyu Hazarika , Kaixiang Lin

Contemporary generative recommendation systems face significant challenges in handling multimodal data, eliminating algorithmic biases, and providing transparent decision-making processes. This paper introduces an enhanced generative…

Information Retrieval · Computer Science 2025-10-03 Bo Ma , Hang Li , ZeHua Hu , XiaoFan Gui , LuYao Liu , Simon Lau

Large language models (LLMs) frequently refuse to respond to pseudo-malicious instructions: semantically harmless input queries triggering unnecessary LLM refusals due to conservative safety alignment, significantly impairing user…

Artificial Intelligence · Computer Science 2026-01-21 Xiaorui Wu , Fei Li , Xiaofeng Mao , Xin Zhang , Li Zheng , Yuxiang Peng , Chong Teng , Donghong Ji , Zhuang Li

User simulation is increasingly vital to develop and evaluate recommender systems (RSs). While Large Language Models (LLMs) offer promising avenues to simulate user behavior, they often struggle with the absence of specific task alignment…

Human-Computer Interaction · Computer Science 2026-04-20 Tianjun Wei , Huizhong Guo , Yingpeng Du , Zhu Sun , Huang Chen , Dongxia Wang , Jie Zhang

Emotion recognition from speech is a challenging task that requires capturing both linguistic and paralinguistic cues, with critical applications in human-computer interaction and mental health monitoring. Recent works have highlighted the…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-21 Hugo Thimonier , Antony Perzo , Renaud Seguier

The advent of large language models (LLMs) has revolutionized natural language processing, enabling unprecedented capabilities in understanding and generating human-like text. However, the computational cost and convergence times associated…

Computation and Language · Computer Science 2024-11-26 Kerim Büyükakyüz

Reinforcement Learning (RL) has significantly advanced Large Language Models (LLMs) in verifiable domains, but aligning models for open-ended generation remains profoundly challenging due to the lack of definitive rewards. Current…

Computation and Language · Computer Science 2026-05-29 Xin Guan , Xiaomeng Hu , Shen Huang , Zhenyi Wang , Bo Zhang , Zijian Li , Pengjun Xie , Bo Liu , Jiuxin Cao

Fine-tuning large language models (LLMs) aims to adapt pre-trained models to specific tasks using relatively small and domain-specific datasets. Among Parameter-Efficient Fine-Tuning (PEFT) methods, Low-Rank Adaptation (LoRA) stands out by…

Computation and Language · Computer Science 2026-04-16 Yarui Cao , Kai Liu

Recommendation Systems have become integral to modern user experiences, but lack transparency in their decision-making processes. Existing explainable recommendation methods are hindered by reliance on a post-hoc paradigm, wherein…

Information Retrieval · Computer Science 2024-12-04 Xiaohan Yu , Li Zhang , Chong Chen

Sequential recommendation systems aim to predict users' next preferences based on their interaction histories, but existing approaches face critical limitations in efficiency and multi-scale pattern recognition. While Transformer-based…

Information Retrieval · Computer Science 2025-05-08 Qianru Zhang , Liang Qu , Honggang Wen , Dong Huang , Siu-Ming Yiu , Nguyen Quoc Viet Hung , Hongzhi Yin

Knowledge utilization is a critical aspect of LLMs, and understanding how they adapt to evolving knowledge is essential for their effective deployment. However, existing benchmarks are predominantly static, failing to capture the evolving…

Computation and Language · Computer Science 2024-12-19 Wei Tang , Yixin Cao , Yang Deng , Jiahao Ying , Bo Wang , Yizhe Yang , Yuyue Zhao , Qi Zhang , Xuanjing Huang , Yugang Jiang , Yong Liao

Sequential recommendation plays an increasingly important role in many e-commerce services such as display advertisement and online shopping. With the rapid development of these services in the last two decades, users have accumulated a…

Information Retrieval · Computer Science 2021-06-01 Yongji Wu , Lu Yin , Defu Lian , Mingyang Yin , Neil Zhenqiang Gong , Jingren Zhou , Hongxia Yang

Large Language Models (LLMs) have emerged as powerful tools in the field of Natural Language Processing (NLP) and have recently gained significant attention in the domain of Recommendation Systems (RS). These models, trained on massive…

Information Retrieval · Computer Science 2024-06-19 Likang Wu , Zhi Zheng , Zhaopeng Qiu , Hao Wang , Hongchao Gu , Tingjia Shen , Chuan Qin , Chen Zhu , Hengshu Zhu , Qi Liu , Hui Xiong , Enhong Chen

The rapid advancement of large language models (LLMs) has transformed the landscape of agentic information seeking capabilities through the integration of tools such as search engines and web browsers. However, current mainstream approaches…

Computation and Language · Computer Science 2025-05-29 Dingchu Zhang , Yida Zhao , Jialong Wu , Baixuan Li , Wenbiao Yin , Liwen Zhang , Yong Jiang , Yufeng Li , Kewei Tu , Pengjun Xie , Fei Huang

Sequential recommendation is a task to capture hidden user preferences from historical user item interaction data and recommend next items for the user. Significant progress has been made in this domain by leveraging classification based…

Information Retrieval · Computer Science 2024-08-30 Panfeng Cao , Pietro Lio