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Aspect-level sentiment classification aims to distinguish the sentiment polarities over one or more aspect terms in a sentence. Existing approaches mostly model different aspects in one sentence independently, which ignore the sentiment…

Computation and Language · Computer Science 2019-06-12 Pinlong Zhaoa , Linlin Houb , Ou Wua

Large Language Models (LLMs) have shown great potential for enhancing recommender systems through their extensive world knowledge and reasoning capabilities. However, effectively translating these semantic signals into traditional…

Information Retrieval · Computer Science 2026-02-25 Junjie Meng , Ranxu zhang , Wei Wu , Rui Zhang , Chuan Qin , Qi Zhang , Qi Liu , Hui Xiong , Chao Wang

How humans understand and recognize the actions of others is a complex neuroscientific problem that involves a combination of cognitive mechanisms and neural networks. Research has shown that humans have brain areas that recognize actions…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Haojun Xu , Yan Gao , Zheng Hui , Jie Li , Xinbo Gao

Product reviews, in the form of texts dominantly, significantly help consumers finalize their purchasing decisions. Thus, it is important for e-commerce companies to predict review helpfulness to present and recommend reviews in a more…

Computation and Language · Computer Science 2018-08-30 Cen Chen , Minghui Qiu , Yinfei Yang , Jun Zhou , Jun Huang , Xiaolong Li , Forrest Bao

Modern recommender systems (RS) work by processing a number of signals that can be inferred from large sets of user-item interaction data. The main signal to analyze stems from the raw matrix that represents interactions. However, we can…

Information Retrieval · Computer Science 2021-03-08 Paula Gómez Duran , Alexandros Karatzoglou , Jordi Vitrià , Xin Xin , Ioannis Arapakis

The latest advance in recommendation shows that better user and item representations can be learned via performing graph convolutions on the user-item interaction graph. However, such finding is mostly restricted to the collaborative…

Information Retrieval · Computer Science 2022-01-10 Jiancan Wu , Xiangnan He , Xiang Wang , Qifan Wang , Weijian Chen , Jianxun Lian , Xing Xie

Aspect-based sentiment analysis predicts sentiment polarity with fine granularity. While graph convolutional networks (GCNs) are widely utilized for sentimental feature extraction, their naive application for syntactic feature extraction…

Computation and Language · Computer Science 2024-09-10 Chen Li , Huidong Tang , Jinli Zhang , Xiujing Guo , Debo Cheng , Yasuhiko Morimoto

Textual data are commonly used as auxiliary information for modeling user preference nowadays. While many prior works utilize user reviews for rating prediction, few focus on top-N recommendation, and even few try to incorporate item…

Information Retrieval · Computer Science 2023-05-23 Ming-Hao Juan , Pu-Jen Cheng , Hui-Neng Hsu , Pin-Hsin Hsiao

Given the large volume of side information from different modalities, multimodal recommender systems have become increasingly vital, as they exploit richer semantic information beyond user-item interactions. Recent works highlight that…

Information Retrieval · Computer Science 2024-12-17 Junjie Huang , Jiarui Qin , Yong Yu , Weinan Zhang

Sequential recommendation systems aim to predict users' next likely interaction based on their history. However, these systems face data sparsity and cold-start problems. Utilizing data from other domains, known as multi-domain methods, is…

Information Retrieval · Computer Science 2025-02-20 Zuoli Tang , Zhaoxin Huan , Zihao Li , Xiaolu Zhang , Jun Hu , Chilin Fu , Jun Zhou , Lixin Zou , Chenliang Li

Recently, Graph Convolutional Network (GCN) has become a novel state-of-art for Collaborative Filtering (CF) based Recommender Systems (RS). It is a common practice to learn informative user and item representations by performing embedding…

Information Retrieval · Computer Science 2024-05-08 Yinan Zhang , Pei Wang , Congcong Liu , Xiwei Zhao , Hao Qi , Jie He , Junsheng Jin , Changping Peng , Zhangang Lin , Jingping Shao

Latent factor collaborative filtering (CF) has been a widely used technique for recommender system by learning the semantic representations of users and items. Recently, explainable recommendation has attracted much attention from research…

Machine Learning · Computer Science 2020-07-14 Deng Pan , Xiangrui Li , Xin Li , Dongxiao Zhu

In recent years, many studies extract aspects from user reviews and integrate them with ratings for improving the recommendation performance. The common aspects mentioned in a user's reviews and a product's reviews indicate indirect…

Information Retrieval · Computer Science 2019-04-18 Xinyu Guan , Zhiyong Cheng , Xiangnan He , Yongfeng Zhang , Zhibo Zhu , Qinke Peng , Tat-Seng Chua

The interactions of users and items in recommender system could be naturally modeled as a user-item bipartite graph. In recent years, we have witnessed an emerging research effort in exploring user-item graph for collaborative filtering…

Machine Learning · Computer Science 2019-11-26 Xiao Wang , Ruijia Wang , Chuan Shi , Guojie Song , Qingyong Li

Modeling and prediction of review helpfulness has become more predominant due to proliferation of e-commerce websites and online shops. Since the functionality of a product cannot be tested before buying, people often rely on different…

Computation and Language · Computer Science 2020-04-29 Iyiola E. Olatunji , Xin Li , Wai Lam

Recommendation is a prevalent application of machine learning that affects many users; therefore, it is important for recommender models to be accurate and interpretable. In this work, we propose a method to both interpret and augment the…

Machine Learning · Statistics 2020-06-22 Michael Tsang , Dehua Cheng , Hanpeng Liu , Xue Feng , Eric Zhou , Yan Liu

In recent years, much research effort on recommendation has been devoted to mining user behaviors, i.e., collaborative filtering, along with the general information which describes users or items, e.g., textual attributes, categorical…

Information Retrieval · Computer Science 2020-03-10 Yu Zheng , Chen Gao , Xiangnan He , Yong Li , Depeng Jin

Aspect-level sentiment analysis aims to determine the sentiment polarity towards a specific target in a sentence. The main challenge of this task is to effectively model the relation between targets and sentiments so as to filter out noisy…

Computation and Language · Computer Science 2022-11-08 Lvxiaowei Xu , Xiaoxuan Pang , Jianwang Wu , Ming Cai , Jiawei Peng

Shared-account Cross-domain Sequential recommendation (SCSR) is the task of recommending the next item based on a sequence of recorded user behaviors, where multiple users share a single account, and their behaviours are available in…

Information Retrieval · Computer Science 2021-05-10 Lei Guo , Li Tang , Tong Chen , Lei Zhu , Quoc Viet Hung Nguyen , Hongzhi Yin

In real-world applications, users express different behaviors when they interact with different items, including implicit click/like interactions, and explicit comments/reviews interactions. Nevertheless, almost all recommender works are…

Information Retrieval · Computer Science 2024-07-30 Wentao Xu , Qianqian Xie , Shuo Yang , Jiangxia Cao , Shuchao Pang