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In modern recommender systems, sequential recommendation leverages chronological user behaviors to make effective next-item suggestions, which suffers from data sparsity issues, especially for new users. One promising line of work is the…

信息检索 · 计算机科学 2023-11-15 Guanyu Lin , Chen Gao , Yu Zheng , Jianxin Chang , Yanan Niu , Yang Song , Kun Gai , Zhiheng Li , Depeng Jin , Yong Li , Meng Wang

Self-attention is a method of encoding sequences of vectors by relating these vectors to each-other based on pairwise similarities. These models have recently shown promising results for modeling discrete sequences, but they are non-trivial…

计算与语言 · 计算机科学 2018-06-19 Matthias Sperber , Jan Niehues , Graham Neubig , Sebastian Stüker , Alex Waibel

The pursuit of improved accuracy in recommender systems has led to the incorporation of user context. Context-aware recommender systems typically handle large amounts of data which must be uploaded and stored on the cloud, putting the…

Location recommendation plays a vital role in improving users' travel experience. The timestamp of the POI to be predicted is of great significance, since a user will go to different places at different times. However, most existing methods…

信息检索 · 计算机科学 2023-04-11 Yan Luo , Haoyi Duan , Ye Liu , Fu-lai Chung

Factorization methods for recommender systems tend to represent users as a single latent vector. However, user behavior and interests may change in the context of the recommendations that are presented to the user. For example, in the case…

信息检索 · 计算机科学 2020-04-21 Oren Barkan , Avi Caciularu , Ori Katz , Noam Koenigstein

Advancing large language models (LLMs) for the next point-of-interest (POI) recommendation task faces two fundamental challenges: (i) although existing methods produce semantic IDs that incorporate semantic information, their topology-blind…

信息检索 · 计算机科学 2026-03-13 Peibo Li , Shuang Ao , Hao Xue , Yang Song , Maarten de Rijke , Johan Barthélemy , Tomasz Bednarz , Flora D. Salim

Point-of-interest (POI) recommender systems help users discover relevant locations, but their effectiveness is often compromised by popularity bias, which disadvantages less popular, yet potentially meaningful places. This paper addresses…

信息检索 · 计算机科学 2025-07-15 Andrea Forster , Simone Kopeinik , Denic Helic , Stefan Thalmann , Dominik Kowald

Recency bias is a useful inductive prior for sequential modeling: it emphasizes nearby observations and can still allow longer-range dependencies. Standard Transformer attention lacks this property, relying on all-to-all interactions that…

机器学习 · 计算机科学 2026-04-23 Kareem Hegazy , Michael W. Mahoney , N. Benjamin Erichson

The Location-Based Social Networks (LBSN) (e.g., Facebook) have many factors (for instance, ratings, check-in time, etc.) that play a crucial role for the Point-of-Interest (POI) recommendations. Unlike ratings, the reviews can help users…

信息检索 · 计算机科学 2017-12-22 Ramesh Baral , Tao Li

While modern text-to-image models excel at prompt-based generation, they often lack the fine-grained control necessary for specific user requirements like spatial layouts or subject appearances. Multi-condition control addresses this, yet…

计算机视觉与模式识别 · 计算机科学 2026-02-09 Chao Zhou , Tianyi Wei , Yiling Chen , Wenbo Zhou , Nenghai Yu

We extend sequence-to-sequence models with the possibility to control the characteristics or style of the generated output, via attention that is generated a priori (before decoding) from a latent code vector. After training an initial…

计算与语言 · 计算机科学 2018-06-26 Lucas Sterckx , Johannes Deleu , Chris Develder , Thomas Demeester

Predicting users' preferences based on their sequential behaviors in history is challenging and crucial for modern recommender systems. Most existing sequential recommendation algorithms focus on transitional structure among the sequential…

信息检索 · 计算机科学 2020-02-06 Jibang Wu , Renqin Cai , Hongning Wang

In the recommender system of Meituan Waimai, we are dealing with ever-lengthening user behavior sequences, which pose an increasing challenge to modeling user preference effectively. Existing sequential recommendation models often fail to…

信息检索 · 计算机科学 2024-03-20 Zhichao Feng , Junjiie Xie , Kaiyuan Li , Yu Qin , Pengfei Wang , Qianzhong Li , Bin Yin , Xiang Li , Wei Lin , Shangguang Wang

Sequential modelling with self-attention has achieved cutting edge performances in natural language processing. With advantages in model flexibility, computation complexity and interpretability, self-attention is gradually becoming a key…

机器学习 · 计算机科学 2019-12-02 Da Xu , Chuanwei Ruan , Sushant Kumar , Evren Korpeoglu , Kannan Achan

Self-attention-based networks have achieved remarkable performance in sequential recommendation tasks. A crucial component of these models is positional encoding. In this study, we delve into the learned positional embedding, demonstrating…

信息检索 · 计算机科学 2024-11-27 Fan Luo , Haibo He , Juan Zhang , Shenghui Xu

In modern social media platforms, an effective content recommendation should benefit both creators to bring genuine benefits to them and consumers to help them get really interesting content. To address the limitations of existing methods…

社会与信息网络 · 计算机科学 2020-12-10 Wenyi Xiao , Huan Zhao , Haojie Pan , Yangqiu Song , Vincent W. Zheng , Qiang Yang

Exploring contextual information in the local region is important for shape understanding and analysis. Existing studies often employ hand-crafted or explicit ways to encode contextual information of local regions. However, it is hard to…

计算机视觉与模式识别 · 计算机科学 2018-11-16 Xinhai Liu , Zhizhong Han , Yu-Shen Liu , Matthias Zwicker

In this work we address the development of a smart personal assistant that is capable of anticipating a user's information needs based on a novel type of context: the person's activity inferred from her check-in records on a location-based…

信息检索 · 计算机科学 2017-09-19 Jan R. Benetka , Krisztian Balog , Kjetil Nørvåg

The self-attention mechanism, which equips with a strong capability of modeling long-range dependencies, is one of the extensively used techniques in the sequential recommendation field. However, many recent studies represent that current…

信息检索 · 计算机科学 2023-05-18 Xinyu Du , Huanhuan Yuan , Pengpeng Zhao , Jianfeng Qu , Fuzhen Zhuang , Guanfeng Liu , Victor S. Sheng

Person Search is a relevant task that aims to jointly solve Person Detection and Person Re-identification(re-ID). Though most previous methods focus on learning robust individual features for retrieval, it's still hard to distinguish…

计算机视觉与模式识别 · 计算机科学 2021-11-30 Shihui Chen , Yueqing Zhuang , Boxun Li