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A recommender system learns to predict the user-specific preference or intention over many items simultaneously for all users, making personalized recommendations based on a relatively small number of observations. One central issue is how…

Information Retrieval · Computer Science 2022-09-21 Ben Dai , Xiaotong Shen , Wei Pan

Deep neural network based recommendation systems have achieved great success as information filtering techniques in recent years. However, since model training from scratch requires sufficient data, deep learning-based recommendation…

Information Retrieval · Computer Science 2022-06-10 Chunyang Wang , Yanmin Zhu , Haobing Liu , Tianzi Zang , Jiadi Yu , Feilong Tang

Sequential recommendation systems predict the next interaction item based on users' past interactions, aligning recommendations with individual preferences. Leveraging the strengths of Large Language Models (LLMs) in knowledge comprehension…

Information Retrieval · Computer Science 2025-01-22 Xiaoyu Kong , Jiancan Wu , An Zhang , Leheng Sheng , Hui Lin , Xiang Wang , Xiangnan He

Distributed Learning (DL) enables the training of machine learning models across multiple devices, yet it faces challenges like non-IID data distributions and device capability disparities, which can impede training efficiency.…

Machine Learning · Computer Science 2025-02-20 Mengchen Fan , Keren Li , Tianyun Zhang , Qing Tian , Baocheng Geng

In multitask retrieval, a single retriever is trained to retrieve relevant contexts for multiple tasks. Despite its practical appeal, naive multitask retrieval lags behind task-specific retrieval in which a separate retriever is trained for…

Computation and Language · Computer Science 2023-07-04 Wenzheng Zhang , Chenyan Xiong , Karl Stratos , Arnold Overwijk

Recurrent neural networks like long short-term memory (LSTM) are important architectures for sequential prediction tasks. LSTMs (and RNNs in general) model sequences along the forward time direction. Bidirectional LSTMs (Bi-LSTMs) on the…

Machine Learning · Statistics 2017-11-16 Samira Shabanian , Devansh Arpit , Adam Trischler , Yoshua Bengio

Recommender systems usually leverage multi-task learning methods to simultaneously optimize several objectives because of the multi-faceted user behavior data. The typical way of conducting multi-task learning is to establish appropriate…

Information Retrieval · Computer Science 2023-09-20 Yi Ren , Ying Du , Bin Wang , Shenzheng Zhang

Session-based recommendation plays a central role in a wide spectrum of online applications, ranging from e-commerce to online advertising services. However, the majority of existing session-based recommendation techniques (e.g.,…

Information Retrieval · Computer Science 2021-10-11 Chao Huang , Jiahui Chen , Lianghao Xia , Yong Xu , Peng Dai , Yanqing Chen , Liefeng Bo , Jiashu Zhao , Jimmy Xiangji Huang

Session-based recommendation (SR) models aim to recommend items to anonymous users based on their behavior during the current session. While various SR models in the literature utilize item sequences to predict the next item, they often…

Information Retrieval · Computer Science 2025-08-29 Jyoti Narwariya , Priyanka Gupta , Muskan Gupta , Jyotsana Khatri , Lovekesh Vig

Recommender systems play a crucial role in mitigating the problem of information overload by suggesting users' personalized items or services. The vast majority of traditional recommender systems consider the recommendation procedure as a…

Machine Learning · Computer Science 2019-06-28 Xiangyu Zhao , Liang Zhang , Long Xia , Zhuoye Ding , Dawei Yin , Jiliang Tang

Large language models (LLMs) have recently been used as backbones for recommender systems. However, their performance often lags behind conventional methods in standard tasks like retrieval. We attribute this to a mismatch between LLMs'…

Information Retrieval · Computer Science 2024-04-02 Yuwei Cao , Nikhil Mehta , Xinyang Yi , Raghunandan Keshavan , Lukasz Heldt , Lichan Hong , Ed H. Chi , Maheswaran Sathiamoorthy

With the rapid growth in multimedia services and the enormous offers of video contents in online social networks, users have difficulty in obtaining their interests. Therefore, various personalized recommendation systems have been proposed.…

Machine Learning · Computer Science 2016-02-02 Pan Zhou , Yingxue Zhou , Dapeng Wu , Hai Jin

User modeling in large e-commerce platforms aims to optimize user experiences by incorporating various customer activities. Traditional models targeting a single task often focus on specific business metrics, neglecting the comprehensive…

Information Retrieval · Computer Science 2025-02-28 Mingdai Yang , Fan Yang , Yanhui Guo , Shaoyuan Xu , Tianchen Zhou , Yetian Chen , Simone Shao , Jia Liu , Yan Gao

Explainable recommendations help improve the transparency and credibility of recommendation systems, and play an important role in personalized recommendation scenarios. At present, methods for explainable recommendation based on large…

Information Retrieval · Computer Science 2026-04-07 Xiangchen Pan , Wei Wei

As e-learning systems become more prevalent, there is a growing need for them to accommodate individual differences between students. This paper addresses the problem of how to personalize educational content to students in order to…

Artificial Intelligence · Computer Science 2019-04-24 Avi Segal , Yossi Ben David , Joseph Jay Williams , Kobi Gal , Yaar Shalom

Large Language Models (LLMs) have shown remarkable performance in various basic natural language tasks. For completing the complex task, we still need a plan for the task to guide LLMs to generate the specific solutions step by step. LLMs…

Computation and Language · Computer Science 2023-12-14 Yiduo Guo , Yaobo Liang , Chenfei Wu , Wenshan Wu , Dongyan Zhao , Nan Duan

Modeling user sequential behaviors has recently attracted increasing attention in the recommendation domain. Existing methods mostly assume coherent preference in the same sequence. However, user personalities are volatile and easily…

Information Retrieval · Computer Science 2022-04-01 Weiqi Shao , Xu Chen , Long Xia , Jiashu Zhao , Dawei Yin

As the recent Large Language Models(LLM's) become increasingly competent in zero-shot and few-shot reasoning across various domains, educators are showing a growing interest in leveraging these LLM's in conversation-based tutoring systems.…

Human-Computer Interaction · Computer Science 2024-03-22 Minju Park , Sojung Kim , Seunghyun Lee , Soonwoo Kwon , Kyuseok Kim

Recommender systems have been widely applied in different real-life scenarios to help us find useful information. In particular, Reinforcement Learning (RL) based recommender systems have become an emerging research topic in recent years,…

Information Retrieval · Computer Science 2023-06-13 Yuanguo Lin , Yong Liu , Fan Lin , Lixin Zou , Pengcheng Wu , Wenhua Zeng , Huanhuan Chen , Chunyan Miao

Providing user-understandable explanations to justify recommendations could help users better understand the recommended items, increase the system's ease of use, and gain users' trust. A typical approach to realize it is natural language…

Information Retrieval · Computer Science 2023-01-16 Lei Li , Yongfeng Zhang , Li Chen