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Contrastive Learning (CL) enhances the training of sequential recommendation (SR) models through informative self-supervision signals. Existing methods often rely on data augmentation strategies to create positive samples and promote…

信息检索 · 计算机科学 2026-04-06 Zhikai Wang , Yanyan Shen , Zexi Zhang , Li He , Yichun Li , Hao Gu , Yinghua Zhang

Contrastive Learning (CL) performances as a rising approach to address the challenge of sparse and noisy recommendation data. Although having achieved promising results, most existing CL methods only perform either hand-crafted data or…

信息检索 · 计算机科学 2023-11-22 Xiuyuan Qin , Huanhuan Yuan , Pengpeng Zhao , Junhua Fang , Fuzhen Zhuang , Guanfeng Liu , Victor Sheng

Integrating supervised contrastive loss to cross entropy-based communication has recently been proposed as a solution to address the long-tail learning problem. However, when the class imbalance ratio is high, it requires adjusting the…

机器学习 · 计算机科学 2024-07-10 Charika De Alvis , Dishanika Denipitiyage , Suranga Seneviratne

Recent works have shown the remarkable superiority of transformer models in reinforcement learning (RL), where the decision-making problem is formulated as sequential generation. Transformer-based agents could emerge with self-improvement…

机器学习 · 计算机科学 2024-06-04 Sili Huang , Jifeng Hu , Zhejian Yang , Liwei Yang , Tao Luo , Hechang Chen , Lichao Sun , Bo Yang

Continual learning (CL) aims to efficiently learn from a non-stationary data stream, without storing or recomputing all seen samples. CL enables prediction on new tasks by incorporating sequential training samples. Building on this…

机器学习 · 计算机科学 2025-05-27 Chongyang Zhao , Dong Gong

Mamba, a recently proposed linear-time sequence model, has attracted significant attention for its computational efficiency and strong empirical performance. However, a rigorous theoretical understanding of its underlying mechanisms remains…

机器学习 · 计算机科学 2026-02-13 Junsoo Oh , Wei Huang , Taiji Suzuki

Contrastive Learning (CL) has been proved to be a powerful self-supervised approach for a wide range of domains, including computer vision and graph representation learning. However, the incremental learning issue of CL has rarely been…

机器学习 · 计算机科学 2023-01-31 Cheng Ji , Jianxin Li , Hao Peng , Jia Wu , Xingcheng Fu , Qingyun Sun , Phillip S. Yu

Contrastive learning has shown effectiveness in improving sequential recommendation models. However, existing methods still face challenges in generating high-quality contrastive pairs: they either rely on random perturbations that corrupt…

信息检索 · 计算机科学 2025-12-23 Ziqiang Cui , Yunpeng Weng , Xing Tang , Xiaokun Zhang , Shiwei Li , Peiyang Liu , Bowei He , Dugang Liu , Weihong Luo , Xiuqiang He , Chen Ma

Reinforcement learning (RL) has been widely applied in recommendation systems due to its potential in optimizing the long-term engagement of users. From the perspective of RL, recommendation can be formulated as a Markov decision process…

信息检索 · 计算机科学 2023-10-26 Chengpeng Li , Zhengyi Yang , Jizhi Zhang , Jiancan Wu , Dingxian Wang , Xiangnan He , Xiang Wang

Personalized recommender systems play a crucial role in capturing users' evolving preferences over time to provide accurate and effective recommendations on various online platforms. However, many recommendation models rely on a single type…

信息检索 · 计算机科学 2023-10-23 Wei Wei , Lianghao Xia , Chao Huang

Clinical time-series data are difficult to model with methods designed for regular sequences because they exhibit irregular sampling, frequent missing values, and heterogeneous observation patterns across variables. Existing approaches…

机器学习 · 计算机科学 2026-05-19 Jinwoong Kim , Sangjin Park

Contrastive representation learning is crucial in time series analysis as it alleviates the issue of data noise and incompleteness as well as sparsity of supervision signal. However, existing constrastive learning frameworks usually focus…

机器学习 · 计算机科学 2024-06-26 Haozhi Gao , Qianqian Ren , Jinbao Li

Meta-reinforcement learning typically requires orders of magnitude more samples than single task reinforcement learning methods. This is because meta-training needs to deal with more diverse distributions and train extra components such as…

机器学习 · 计算机科学 2021-03-12 Bernie Wang , Simon Xu , Kurt Keutzer , Yang Gao , Bichen Wu

In this paper, we consider the design of Model Predictive Control (MPC) algorithms based on Mamba neural networks. Mamba is a neural network architecture capable of sub-quadratic computational scaling in sequence length with…

最优化与控制 · 数学 2026-04-16 Michiel Cevaal , Thomas de Jong , Mircea Lazar

Attention-based sequential recommendation methods have shown promise in accurately capturing users' evolving interests from their past interactions. Recent research has also explored the integration of reinforcement learning (RL) into these…

机器学习 · 计算机科学 2024-04-19 Melissa Mozifian , Tristan Sylvain , Dave Evans , Lili Meng

Session-based recommendation, which aims to predict the next item of users' interest as per an existing sequence interaction of items, has attracted growing applications of Contrastive Learning (CL) with improved user and item…

信息检索 · 计算机科学 2023-12-21 Zhengxiang Shi , Xi Wang , Aldo Lipani

Self-Supervised Contrastive Learning has proven effective in deriving high-quality representations from unlabeled data. However, a major challenge that hinders both unimodal and multimodal contrastive learning is feature suppression, a…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Jihai Zhang , Xiang Lan , Xiaoye Qu , Yu Cheng , Mengling Feng , Bryan Hooi

Multimodal Contrastive Learning (MCL) advances in aligning different modalities and generating multimodal representations in a joint space. By leveraging contrastive learning across diverse modalities, large-scale multimodal data enhances…

机器学习 · 计算机科学 2025-09-23 Xiaohao Liu , Xiaobo Xia , See-Kiong Ng , Tat-Seng Chua

Recent advancements in multivariate time series forecasting have been propelled by Linear-based, Transformer-based, and Convolution-based models, with Transformer-based architectures gaining prominence for their efficacy in temporal and…

机器学习 · 计算机科学 2024-09-27 Chaolv Zeng , Zhanyu Liu , Guanjie Zheng , Linghe Kong

We introduce Resilient Multiple Choice Learning (rMCL), an extension of the MCL approach for conditional distribution estimation in regression settings where multiple targets may be sampled for each training input. Multiple Choice Learning…

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