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In recent years, Generative Adversarial Networks (GAN) have emerged as a powerful method for learning the mapping from noisy latent spaces to realistic data samples in high-dimensional space. So far, the development and application of GANs…

机器学习 · 统计学 2018-01-30 Atanas Mirchev , Seyed-Ahmad Ahmadi

In recommender systems, cold-start issues are situations where no previous events, e.g. ratings, are known for certain users or items. In this paper, we focus on the item cold-start problem. Both content information (e.g. item attributes)…

信息检索 · 计算机科学 2018-05-24 Yu Zhu , Jinhao Lin , Shibi He , Beidou Wang , Ziyu Guan , Haifeng Liu , Deng Cai

Data sparsity is an inherent challenge in the recommender systems, where most of the data is collected from the implicit feedbacks of users. This causes two difficulties in designing effective algorithms: first, the majority of users only…

信息检索 · 计算机科学 2020-07-15 Wenhui Yu , Xiao Lin , Junfeng Ge , Wenwu Ou , Zheng Qin

This paper provides a theoretical analysis of a new learning problem for recommender systems where users provide feedback by comparing pairs of items instead of rating them individually. We assume that comparisons stem from latent user and…

机器学习 · 计算机科学 2025-08-20 Suryanarayana Sankagiri , Jalal Etesami , Matthias Grossglauser

Session-based recommendation seeks to forecast the next item a user will be interested in, based on their interaction sequences. Due to limited interaction data, session-based recommendation faces the challenge of limited data availability.…

信息检索 · 计算机科学 2024-12-17 Tiantian Liang , Zhe Yang

It has been an important task for recommender systems to suggest satisfying activities to a group of users in people's daily social life. The major challenge in this task is how to aggregate personal preferences of group members to infer…

信息检索 · 计算机科学 2020-10-05 Hongzhi Yin , Qinyong Wang , Kai Zheng , Zhixu Li , Xiaofang Zhou

Cold start is an essential and persistent problem in recommender systems. State-of-the-art solutions rely on training hybrid models for both cold-start and existing users/items, based on the auxiliary information. Such a hybrid model would…

信息检索 · 计算机科学 2022-09-27 Hao Chen , Zefan Wang , Yue Xu , Xiao Huang , Feiran Huang

Generative Adversarial Networks (GANs) are powerful models able to synthesize data samples closely resembling the distribution of real data, yet the diversity of those generated samples is limited due to the so-called mode collapse…

计算机视觉与模式识别 · 计算机科学 2023-06-26 Jan Dubiński , Kamil Deja , Sandro Wenzel , Przemysław Rokita , Tomasz Trzciński

This paper proposes a cold start recommendation model that integrates contrastive learning, aiming to solve the problem of performance degradation of recommendation systems in cold start scenarios due to the scarcity of user and item…

信息检索 · 计算机科学 2025-02-07 Jiacheng Hu , Tai An , Zidong Yu , Junliang Du , Yuanshuai Luo

Graph Neural Network (GNN)-based models have become the mainstream approach for recommender systems. Despite the effectiveness, they are still suffering from the cold-start problem, i.e., recommend for few-interaction items. Existing…

信息检索 · 计算机科学 2023-08-08 Taichi Liu , Chen Gao , Zhenyu Wang , Dong Li , Jianye Hao , Depeng Jin , Yong Li

Cold-start problem is a fundamental challenge for recommendation tasks. Despite the recent advances on Graph Neural Networks (GNNs) incorporate the high-order collaborative signal to alleviate the problem, the embeddings of the cold-start…

信息检索 · 计算机科学 2020-12-15 Bowen Hao , Jing Zhang , Hongzhi Yin , Cuiping Li , Hong Chen

Session-based recommendation systems aim to model users' interests based on their sequential interactions to predict the next item in an ongoing session. In this work, we present a novel approach that can be used in session-based…

信息检索 · 计算机科学 2024-08-31 Begüm Özbay , Resul Tugay , Şule Gündüz Öğüdücü

Conversational recommendation systems (CRSs) use multi-turn interaction to capture user preferences and provide personalized recommendations. A fundamental challenge in CRSs lies in effectively understanding user preferences from…

信息检索 · 计算机科学 2025-04-30 Xiaolei Wang , Chunxuan Xia , Junyi Li , Fanzhe Meng , Lei Huang , Jinpeng Wang , Wayne Xin Zhao , Ji-Rong Wen

Research about recommender systems emerges over the last decade and comprises valuable services to increase different companies' revenue. Several approaches exist in handling paper recommender systems. While most existing recommender…

信息检索 · 计算机科学 2022-03-28 Zahra Zamanzadeh Darban , Mohammad Hadi Valipour

Accurate prediction of user consumption is a key part not only in understanding consumer flexibility and behavior patterns, but in the design of robust and efficient energy saving programs as well. Existing prediction methods usually have…

机器学习 · 统计学 2017-02-22 Pan Li , Baosen Zhang , Yang Weng , Ram Rajagopal

Super-resolving the coarse outputs of global climate simulations, termed downscaling, is crucial in making political and social decisions on systems requiring long-term climate change projections. Existing fast super-resolution techniques,…

大气与海洋物理 · 物理学 2023-04-18 Norihiro Oyama , Noriko N. Ishizaki , Satoshi Koide , Hiroaki Yoshida

Session-based Social Recommendation (SSR) leverages social relationships within online networks to enhance the performance of Session-based Recommendation (SR). However, existing SSR algorithms often encounter the challenge of "friend data…

社会与信息网络 · 计算机科学 2024-09-10 Chunyan An , Yunhan Li , Qiang Yang , Winston K. G. Seah , Zhixu Li , Conghao Yang

Most current recommender systems used the historical behaviour data of user to predict user' preference. However, it is difficult to recommend items to new users accurately. To alleviate this problem, existing user cold start methods either…

信息检索 · 计算机科学 2021-08-06 Ziyi Wang , Wendong Xiao , Yu Li , Zulong Chen , Zhi Jiang

The rise of generative artificial intelligence (AI) has facilitated automated product design but often neglects valuable consumer preference data within companies' internal datasets. Additionally, external sources such as social media and…

综合经济学 · 经济学 2025-05-22 Hui Li , Jian Ni , Fangzhu Yang

With the growing data on the Internet, recommender systems have been able to predict users' preferences and offer related movies. Collaborative filtering is one of the most popular algorithms in these systems. The main purpose of…

信息检索 · 计算机科学 2020-11-11 Mostafa Khalaji