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Click-through rate (CTR) prediction plays a pivotal role in the success of recommendations. Inspired by the recent thriving of language models (LMs), a surge of works improve prediction by organizing user behavior data in a \textbf{textual}…

Information Retrieval · Computer Science 2023-08-17 Shuwei Chen , Xiang Li , Jian Dong , Jin Zhang , Yongkang Wang , Xingxing Wang

Large language models (LLMs) have achieved remarkable success across diverse natural language processing tasks but face persistent challenges in inference efficiency due to their autoregressive nature. While speculative decoding and beam…

Computation and Language · Computer Science 2026-05-29 Jaydip Sen , Harshitha Puvvala , Subhasis Dasgupta

Transformer-based large language models (LLM) have been widely used in language processing applications. However, due to the memory constraints of the devices, most of them restrict the context window. Even though recurrent models in…

Computation and Language · Computer Science 2025-02-07 Zifan He , Yingqi Cao , Zongyue Qin , Neha Prakriya , Yizhou Sun , Jason Cong

Collaborative Metric Learning (CML) recently emerged as a powerful paradigm for recommendation based on implicit feedback collaborative filtering. However, standard CML methods learn fixed user and item representations, which fails to…

Information Retrieval · Computer Science 2021-08-11 Viet-Anh Tran , Guillaume Salha-Galvan , Romain Hennequin , Manuel Moussallam

Conventional recommendation systems succeed in identifying relevant content but often fail to provide users with surprising or novel items. Multimodal Large Language Models (MLLMs) possess the world knowledge and multimodal understanding…

Information Retrieval · Computer Science 2025-09-23 Haoting Wang , Jianling Wang , Hao Li , Fangjun Yi , Mengyu Fu , Youwei Zhang , Yifan Liu , Liang Liu , Minmin Chen , Ed H. Chi , Lichan Hong , Haokai Lu

Although long-term memory systems have made substantial progress in recent years, they still exhibit clear limitations in adaptability, scalability, and self-evolution under continuous interaction settings. Inspired by cognitive theories,…

Artificial Intelligence · Computer Science 2026-01-13 Ningning Zhang , Xingxing Yang , Zhizhong Tan , Weiping Deng , Wenyong Wang

In the rapidly evolving landscape of large language models (LLMs), most research has primarily viewed them as independent individuals, focusing on assessing their capabilities through standardized benchmarks and enhancing their general…

Human-Computer Interaction · Computer Science 2024-01-17 Jiayin Wang , Weizhi Ma , Peijie Sun , Min Zhang , Jian-Yun Nie

Large language model (LLM) applications, such as ChatGPT, are a powerful tool for online information-seeking (IS) and problem-solving tasks. However, users still face challenges initializing and refining prompts, and their cognitive…

Human-Computer Interaction · Computer Science 2024-02-12 Ben Wang , Jiqun Liu , Jamshed Karimnazarov , Nicolas Thompson

Sequential recommender systems predict items that may interest users by modeling their preferences based on historical interactions. Traditional sequential recommendation methods rely on capturing implicit collaborative filtering signals…

Information Retrieval · Computer Science 2024-03-28 Shenghao Yang , Weizhi Ma , Peijie Sun , Qingyao Ai , Yiqun Liu , Mingchen Cai , Min Zhang

User Behavior Modeling (UBM) plays a critical role in user interest learning, which has been extensively used in recommender systems. Crucial interactive patterns between users and items have been exploited, which brings compelling…

Information Retrieval · Computer Science 2023-02-23 Zhicheng He , Weiwen Liu , Wei Guo , Jiarui Qin , Yingxue Zhang , Yaochen Hu , Ruiming Tang

Large Language Models (LLMs) have attracted significant attention in recommender systems for their excellent world knowledge capabilities. However, existing methods that rely on Euclidean space struggle to capture the rich hierarchical…

Information Retrieval · Computer Science 2025-04-22 Wentao Cheng , Zhida Qin , Zexue Wu , Pengzhan Zhou , Tianyu Huang

In the field of software engineering, applying language models to the token sequence of source code is the state-of-art approach to build a code recommendation system. The syntax tree of source code has hierarchical structures. Ignoring the…

Software Engineering · Computer Science 2022-11-29 Yixiao Yang

Traditional high-utility itemset mining (HUIM) aims to determine all high-utility itemsets (HUIs) that satisfy the minimum utility threshold (\textit{minUtil}) in transaction databases. However, in most applications, not all HUIs are…

Databases · Computer Science 2021-11-02 Jinbao Miao , Shicheng Wan , Wensheng Gan , Jiayi Sun , Jiahui Chen

With large language models (LLMs) achieving remarkable breakthroughs in natural language processing (NLP) domains, LLM-enhanced recommender systems have received much attention and have been actively explored currently. In this paper, we…

Information Retrieval · Computer Science 2024-07-02 Jianghao Lin , Rong Shan , Chenxu Zhu , Kounianhua Du , Bo Chen , Shigang Quan , Ruiming Tang , Yong Yu , Weinan Zhang

Session-based recommendation (SBR) methods often rely on user behavior data, which can struggle with the sparsity of session data, limiting performance. Researchers have identified that beyond behavioral signals, rich semantic information…

Information Retrieval · Computer Science 2025-04-15 Shutong Qiao , Wei Zhou , Junhao Wen , Chen Gao , Qun Luo , Peixuan Chen , Yong Li

The modeling of users' behaviors is crucial in modern recommendation systems. A lot of research focuses on modeling users' lifelong sequences, which can be extremely long and sometimes exceed thousands of items. These models use the target…

Information Retrieval · Computer Science 2024-07-16 Kaiming Shen , Xichen Ding , Zixiang Zheng , Yuqi Gong , Qianqian Li , Zhongyi Liu , Guannan Zhang

Large language models (LLMs) struggle on processing complicated observations in interactive decision making tasks. To alleviate this issue, we propose a simple hierarchical prompting approach. Diverging from previous prompting approaches…

Computation and Language · Computer Science 2023-10-31 Abishek Sridhar , Robert Lo , Frank F. Xu , Hao Zhu , Shuyan Zhou

This paper presents an innovative exploration of the application potential of large language models (LLM) in addressing the challenging task of automatically generating behavior trees (BTs) for complex tasks. The conventional manual BT…

Computation and Language · Computer Science 2024-01-17 Fu Li , Xueying Wang , Bin Li , Yunlong Wu , Yanzhen Wang , Xiaodong Yi

As e-commerce platforms expand their product catalogs, accurately recommending long-tail items becomes increasingly important for enhancing both user experience and platform revenue. A key challenge is the long-tail problem, where extreme…

Information Retrieval · Computer Science 2025-06-10 Qingyi Lu , Haotian Lyu , Jiayun Zheng , Yang Wang , Li Zhang , Chengrui Zhou

Simulating user search behavior is a critical task in information retrieval, which can be employed for user behavior modeling, data augmentation, and system evaluation. Recent advancements in large language models (LLMs) have opened up new…

Information Retrieval · Computer Science 2025-04-11 Erhan Zhang , Xingzhu Wang , Peiyuan Gong , Zixuan Yang , Jiaxin Mao