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Sequential recommendation (SR) is traditionally formulated as next-item prediction over a chronological sequence of interacted items. Although recent generative recommendation (GR) methods introduce new machinery, such as semantic IDs,…

Information Retrieval · Computer Science 2026-05-19 Yingyi Zhang , Junyi Li , Yejing Wang , Wenlin Zhang , Xiaowei Qian , Sheng Zhang , Yue Feng , Yichao Wang , Yong Liu , Xiangyu Zhao , Xianneng Li

Sequential recommendation task aims to predict user preference over items in the future given user historical behaviors. The order of user behaviors implies that there are resourceful sequential patterns embedded in the behavior history…

Information Retrieval · Computer Science 2019-11-12 Jiarui Qin , Kan Ren , Yuchen Fang , Weinan Zhang , Yong Yu

The goal of sequential recommendation (SR) is to predict a user's potential interested items based on her/his historical interaction sequences. Most existing sequential recommenders are developed based on ID features, which, despite their…

Information Retrieval · Computer Science 2023-10-24 Jinpeng Wang , Ziyun Zeng , Yunxiao Wang , Yuting Wang , Xingyu Lu , Tianxiang Li , Jun Yuan , Rui Zhang , Hai-Tao Zheng , Shu-Tao Xia

Reward modeling is central to alignment pipelines such as RLHF, RLAIF, and PPO-based policy optimization, yet its reliability is constrained by limited and heterogeneous human preference data that are expensive to collect at scale. While…

Machine Learning · Computer Science 2026-05-26 Payel Bhattacharjee , Osvaldo Simeone , Ravi Tandon

With the recent increase in data online, discovering meaningful opportunities can be time-consuming and complicated for many individuals. To overcome this data overload challenge, we present a novel text-content-based recommender system as…

Information Retrieval · Computer Science 2017-11-22 Kazem Qazanfari , Abdou Youssef , Kai Keane , Joseph Nelson

Conversational recommendation system (CRS) is able to obtain fine-grained and dynamic user preferences based on interactive dialogue. Previous CRS assumes that the user has a clear target item. However, for many users who resort to CRS,…

Information Retrieval · Computer Science 2022-02-08 Yiming Zhang , Lingfei Wu , Qi Shen , Yitong Pang , Zhihua Wei , Fangli Xu , Bo Long , Jian Pei

The key of sequential recommendation lies in the accurate item correlation modeling. Previous models infer such information based on item co-occurrences, which may fail to capture the real causal relations, and impact the recommendation…

Information Retrieval · Computer Science 2022-12-14 Zhenlei Wang , Xu Chen , Rui Zhou , Quanyu Dai , Zhenhua Dong , Ji-Rong Wen

Recent years have witnessed success of sequential modeling, generative recommender, and large language model for recommendation. Though the scaling law has been validated for sequential models, it showed inefficiency in computational…

Precise perception of articulated objects is vital for empowering service robots. Recent studies mainly focus on point cloud, a single-modal approach, often neglecting vital texture and lighting details and assuming ideal conditions like…

Robotics · Computer Science 2024-07-02 Hongliang Zeng , Ping Zhang , Chengjiong Wu , Jiahua Wang , Tingyu Ye , Fang Li

Sequential Recommendation (SR) predicts users next interactions by modeling the temporal order of their historical behaviors. Existing approaches, including traditional sequential models and generative recommenders, achieve strong…

Information Retrieval · Computer Science 2026-03-06 Sirui Huang , Jing Long , Qian Li , Guandong Xu , Qing Li

One of the main challenges in recommender systems is data sparsity which leads to high variance. Several attempts have been made to improve the bias-variance trade-off using auxiliary information. In particular, document modeling-based…

Information Retrieval · Computer Science 2021-09-14 Meysam Varasteh , Mehdi Soleiman Nejad , Hadi Moradi , Mohammad Amin Sadeghi , Ahmad Kalhor

Sequential recommendations have drawn significant attention in modeling the user's historical behaviors to predict the next item. With the booming development of multimodal data (e.g., image, text) on internet platforms, sequential…

Information Retrieval · Computer Science 2024-12-12 Changhong Li , Zhiqiang Guo

Sequential recommender systems have become increasingly important in real-world applications that model user behavior sequences to predict their preferences. However, existing sequential recommendation methods predominantly rely on…

Information Retrieval · Computer Science 2025-06-05 Enze Liu , Bowen Zheng , Xiaolei Wang , Wayne Xin Zhao , Jinpeng Wang , Sheng Chen , Ji-Rong Wen

Context-aware recommender systems (CARSs) apply sensing and analysis of user context in order to provide personalized services. Adding context to a recommendation model is challenging, since the addition of context may increases both the…

Machine Learning · Computer Science 2020-08-07 Amit Livne , Moshe Unger , Bracha Shapira , Lior Rokach

Reciprocal recommender system (RRS), considering a two-way matching between two parties, has been widely applied in online platforms like online dating and recruitment. Existing RRS models mainly capture static user preferences, which have…

Information Retrieval · Computer Science 2023-06-27 Bowen Zheng , Yupeng Hou , Wayne Xin Zhao , Yang Song , Hengshu Zhu

Both reviews and user-item interactions (i.e., rating scores) have been widely adopted for user rating prediction. However, these existing techniques mainly extract the latent representations for users and items in an independent and static…

Information Retrieval · Computer Science 2018-01-01 Libing Wu , Cong Quan , Chenliang Li , Qian Wang , Bolong Zheng

In recent years, sequential recommender systems (SRSs) and session-based recommender systems (SBRSs) have emerged as a new paradigm of RSs to capture users' short-term but dynamic preferences for enabling more timely and accurate…

Information Retrieval · Computer Science 2022-05-24 Shoujin Wang , Qi Zhang , Liang Hu , Xiuzhen Zhang , Yan Wang , Charu Aggarwal

The amount of content on online music streaming platforms is immense, and most users only access a tiny fraction of this content. Recommender systems are the application of choice to open up the collection to these users. Collaborative…

Information Retrieval · Computer Science 2017-08-23 Cedric De Boom , Rohan Agrawal , Samantha Hansen , Esh Kumar , Romain Yon , Ching-Wei Chen , Thomas Demeester , Bart Dhoedt

Sequential recommender systems have shown effective suggestions by capturing users' interest drift. There have been two groups of existing sequential models: user- and item-centric models. The user-centric models capture personalized…

Information Retrieval · Computer Science 2022-09-15 Dongmin Hyun , Chanyoung Park , Junsu Cho , Hwanjo Yu

Sequential Recommendation Systems (SRS) have become essential in many real-world applications. However, existing SRS methods often rely on collaborative filtering signals and fail to capture real-time user preferences, while Conversational…

Information Retrieval · Computer Science 2025-09-12 Yifan Wang , Shen Gao , Jiabao Fang , Rui Yan , Billy Chiu , Shuo Shang