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In recent years, social media users have spent significant amounts of time on short-form video platforms. As a result, established platforms in other domains, such as e-commerce, have begun introducing short-form video content to engage…

Machine Learning · Computer Science 2025-09-05 Andrii Dzhoha , Katya Mirylenka , Egor Malykh , Marco-Andrea Buchmann , Francesca Catino

Recommender systems can be formulated as a matrix completion problem, predicting ratings from user and item parameter vectors. Optimizing these parameters by subsampling data becomes difficult as the number of users and items grows. We…

Information Retrieval · Computer Science 2018-07-09 Elias Tragas , Calvin Luo , Maxime Gazeau , Kevin Luk , David Duvenaud

Recommender systems serves as an important technical asset in many modern companies. With the increasing demand for higher precision of the technology, more and more research and investment has been allocated to the field. One important…

Information Retrieval · Computer Science 2023-03-14 Hao Wang

Most industry scale recommender systems face critical cold start challenges new items lack interaction history, making it difficult to distribute them in a personalized manner. Standard collaborative filtering models underperform due to…

Information Retrieval · Computer Science 2025-08-12 Amit Jaspal , Kapil Dalwani , Ajantha Ramineni

In this paper, we introduce new formal methods and provide empirical evidence to highlight a unique safety concern prevalent in reinforcement learning (RL)-based recommendation algorithms -- 'user tampering.' User tampering is a situation…

Artificial Intelligence · Computer Science 2023-07-25 Charles Evans , Atoosa Kasirzadeh

Recommender systems have been widely deployed in many real-world applications, but usually suffer from the long-standing user cold-start problem. As a promising way, Cross-Domain Recommendation (CDR) has attracted a surge of interest, which…

Information Retrieval · Computer Science 2022-04-01 Jiangxia Cao , Jiawei Sheng , Xin Cong , Tingwen Liu , Bin Wang

Recommender systems (RSs) are software tools and algorithms developed to alleviate the problem of information overload, which makes it difficult for a user to make right decisions. Two main paradigms toward the recommendation problem are…

Information Retrieval · Computer Science 2021-05-24 Mehdi Afsar , Trafford Crump , Behrouz Far

Most recent paradigms of generative model-based recommendation still face challenges related to the cold-start problem. Existing models addressing cold item recommendations mainly focus on acquiring more knowledge to enrich embeddings or…

Information Retrieval · Computer Science 2025-11-11 Yang Xiang , Li Fan , Chenke Yin , Menglin Kong , Chengtao Ji

Personalized recommendations for new users, also known as the cold-start problem, can be formulated as a contextual bandit problem. Existing contextual bandit algorithms generally rely on features alone to capture user variability. Such…

Machine Learning · Computer Science 2016-04-25 Li Zhou , Emma Brunskill

Item recommendation task predicts a personalized ranking over a set of items for each individual user. One paradigm is the rating-based methods that concentrate on explicit feedbacks and hence face the difficulties in collecting them.…

Information Retrieval · Computer Science 2021-01-15 Guang-Neng Hu , Xin-Yu Dai

The rapid growth of users' involvement in Location-Based Social Networks (LBSNs) has led to the expeditious growth of the data on a global scale. The need of accessing and retrieving relevant information close to users' preferences is an…

Information Retrieval · Computer Science 2019-02-05 Giannis Christoforidis , Pavlos Kefalas , Apostolos N. Papadopoulos , Yannis Manolopoulos

Playlist recommendation involves producing a set of songs that a user might enjoy. We investigate this problem in three cold-start scenarios: (i) cold playlists, where we recommend songs to form new personalised playlists for an existing…

Information Retrieval · Computer Science 2019-01-21 Dawei Chen , Cheng Soon Ong , Aditya Krishna Menon

Cross-domain recommendation (CDR) has been proven as a promising way to alleviate the cold-start issue, in which the most critical problem is how to draw an informative user representation in the target domain via the transfer of user…

Information Retrieval · Computer Science 2025-01-22 Xiaodong Li , Hengzhu Tang , Jiawei Sheng , Xinghua Zhang , Li Gao , Suqi Cheng , Dawei Yin , Tingwen Liu

Recommendation systems (RS) are an increasingly relevant area for both academic and industry researchers, given their widespread impact on the daily online experiences of billions of users. One common issue in real RS is the cold-start…

Information Retrieval · Computer Science 2024-03-28 William Shiao , Mingxuan Ju , Zhichun Guo , Xin Chen , Evangelos Papalexakis , Tong Zhao , Neil Shah , Yozen Liu

Based on the user-item bipartite network, collaborative filtering (CF) recommender systems predict users' interests according to their history collections, which is a promising way to solve the information exploration problem. However, CF…

Data Analysis, Statistics and Probability · Physics 2011-12-13 Zhao-Guo Xuan , Zhan Li , Jian-Guo Liu

This paper proposes a novel neural network, joint training capsule network (JTCN), for the cold start recommendation task. We propose to mimic the high-level user preference other than the raw interaction history based on the side…

Information Retrieval · Computer Science 2020-05-26 Tingting Liang , Congying Xia , Yuyu Yin , Philip S. Yu

Collaborative Filtering (CF) is a widely adopted technique in recommender systems. Traditional CF models mainly focus on predicting a user's preference to the items in a single domain such as the movie domain or the music domain. A major…

Information Retrieval · Computer Science 2018-03-06 Xinghua Wang , Zhaohui Peng , Senzhang Wang , Philip S. Yu , Wenjing Fu , Xiaoguang Hong

Pure methods generally perform excellently in either recommendation accuracy or diversity, whereas hybrid methods generally outperform pure cases in both recommendation accuracy and diversity, but encounter the dilemma of optimal…

Information Retrieval · Computer Science 2012-07-26 Tian Qiu , Zi-Ke Zhang , Guang Chen

Recommendation systems have faced significant challenges in cold-start scenarios, where new items with a limited history of interaction need to be effectively recommended to users. Though multimodal data (e.g., images, text, audio, etc.)…

Information Retrieval · Computer Science 2025-08-12 Van-Khang Nguyen , Duc-Hoang Pham , Huy-Son Nguyen , Cam-Van Thi Nguyen , Hoang-Quynh Le , Duc-Trong Le

It is well known that collaborative filtering (CF) based recommender systems provide better modeling of users and items associated with considerable rating history. The lack of historical ratings results in the user and the item cold-start…

Information Retrieval · Computer Science 2016-09-21 Oren Anava , Shahar Golan , Nadav Golbandi , Zohar Karnin , Ronny Lempel , Oleg Rokhlenko , Oren Somekh