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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…

Information Retrieval · Computer Science 2025-02-07 Jiacheng Hu , Tai An , Zidong Yu , Junliang Du , Yuanshuai Luo

Intermediate training of pre-trained transformer-based language models on domain-specific data leads to substantial gains for downstream tasks. To increase efficiency and prevent catastrophic forgetting alleviated from full domain-adaptive…

Computation and Language · Computer Science 2023-05-23 Chia-Chien Hung , Lukas Lange , Jannik Strötgen

The use of pre-training is an emerging technique to enhance a neural model's performance, which has been shown to be effective for many neural language models such as BERT. This technique has also been used to enhance the performance of…

Information Retrieval · Computer Science 2023-11-28 Siwei Liu , Xi Wang , Craig Macdonald , Iadh Ounis

Gradient descent computed by backpropagation (BP) is a widely used learning method for training artificial neural networks but has several limitations: it is computationally demanding, requires frequent manual tuning of the network…

Signal Processing · Electrical Eng. & Systems 2024-10-02 Jiaqi Xing , Libo Chen , ZeZheng Zhang , Mohammed Nazibul Hasan , Zhi-Bin Zhang

Making personalized recommendation for cold-start users, who only have a few interaction histories, is a challenging problem in recommendation systems. Recent works leverage hypernetworks to directly map user interaction histories to…

Artificial Intelligence · Computer Science 2023-06-07 Shiguang Wu , Yaqing Wang , Qinghe Jing , Daxiang Dong , Dejing Dou , Quanming Yao

Users' reviews contain valuable information which are not taken into account in most recommender systems. According to the latest studies in this field, using review texts could not only improve the performance of recommendation, but it can…

Information Retrieval · Computer Science 2020-03-17 Parisa Abolfath Beygi Dezfouli , Saeedeh Momtazi , Mehdi Dehghan

Cold-start problems are long-standing challenges for practical recommendations. Most existing recommendation algorithms rely on extensive observed data and are brittle to recommendation scenarios with few interactions. This paper addresses…

Information Retrieval · Computer Science 2019-06-04 Zhengxiao Du , Xiaowei Wang , Hongxia Yang , Jingren Zhou , Jie Tang

Neural architecture search (NAS) has shown great promise in the field of automated machine learning (AutoML). NAS has outperformed hand-designed networks and made a significant step forward in the field of automating the design of deep…

Machine Learning · Computer Science 2022-05-16 Matej Grobelnik , Joaquin Vanschoren

Adaptive learning is an area of educational technology that consists in delivering personalized learning experiences to address the unique needs of each learner. An important subfield of adaptive learning is learning path personalization:…

Machine Learning · Computer Science 2023-05-12 Jean Vassoyan , Jill-Jênn Vie , Pirmin Lemberger

Balancing differential privacy (DP) with recommendation accuracy is a key challenge in privacy-preserving recommender systems, since DP-noise degrades accuracy. We address this trade-off at both the data and model levels. At the data level,…

Information Retrieval · Computer Science 2026-05-13 Peter Müllner , Dominik Kowald , Markus Schedl , Elisabeth Lex

Cold-start problems are enormous challenges in practical recommender systems. One promising solution for this problem is cross-domain recommendation (CDR) which leverages rich information from an auxiliary (source) domain to improve the…

Information Retrieval · Computer Science 2021-05-12 Yongchun Zhu , Kaikai Ge , Fuzhen Zhuang , Ruobing Xie , Dongbo Xi , Xu Zhang , Leyu Lin , Qing He

Cold-start personalization requires inferring user preferences through interaction when no user-specific historical data is available. The core challenge is a routing problem: each task admits dozens of preference dimensions, yet individual…

Computation and Language · Computer Science 2026-02-17 Avinandan Bose , Shuyue Stella Li , Faeze Brahman , Pang Wei Koh , Simon Shaolei Du , Yulia Tsvetkov , Maryam Fazel , Lin Xiao , Asli Celikyilmaz

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

In supervised learning, we fit a single statistical model to a given data set, assuming that the data is associated with a singular task, which yields well-tuned models for specific use, but does not adapt well to new contexts. By contrast,…

Machine Learning · Computer Science 2020-09-11 Bingjia Wang , Alec Koppel , Vikram Krishnamurthy

An effective online recommendation system should jointly capture users' long-term and short-term preferences in both users' internal behaviors (from the target recommendation task) and external behaviors (from other tasks). However, it is…

Information Retrieval · Computer Science 2021-11-29 Ruobing Xie , Yalong Wang , Rui Wang , Yuanfu Lu , Yuanhang Zou , Feng Xia , Leyu Lin

Transformer networks are effective at modeling long-range contextual information and have recently demonstrated exemplary performance in the natural language processing domain. Conventionally, the temporal action proposal generation (TAPG)…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Lining Wang , Haosen Yang , Wenhao Wu , Hongxun Yao , Hujie Huang

In recommender systems, one common challenge is the cold-start problem, where interactions are very limited for fresh users in the systems. To address this challenge, recently, many works introduce the meta-optimization idea into the…

Information Retrieval · Computer Science 2022-06-13 Tianxin Wei , Jingrui He

Given a finite set of sample points, meta-learning algorithms aim to learn an optimal adaptation strategy for new, unseen tasks. Often, this data can be ambiguous as it might belong to different tasks concurrently. This is particularly the…

Machine Learning · Computer Science 2024-10-24 Alfredo Reichlin , Gustaf Tegnér , Miguel Vasco , Hang Yin , Mårten Björkman , Danica Kragic

Making accurate recommendations for cold-start users has been a longstanding and critical challenge for recommender systems (RS). Cross-domain recommendations (CDR) offer a solution to tackle such a cold-start problem when there is no…

Information Retrieval · Computer Science 2021-06-21 Lei Chen , Fajie Yuan , Jiaxi Yang , Xiangnan He , Chengming Li , Min Yang

Neural Processes (NPs) have gained attention in meta-learning for their ability to quantify uncertainty, together with their rapid prediction and adaptability. However, traditional NPs are prone to underfitting. Transformer Neural Processes…

Machine Learning · Computer Science 2025-04-22 Jose Lara-Rangel , Nanze Chen , Fengzhe Zhang