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In recent years, the use of edge information provided by knowledge graphs together with the advantages of higher-order connectivity in graph neural networks for recommendation systems has become an important research direction. However,…

信息检索 · 计算机科学 2026-05-12 Zhifei Hu , Feng Xia

Pre-trained language models have proven their unique powers in capturing implicit language features. However, most pre-training approaches focus on the word-level training objective, while sentence-level objectives are rarely studied. In…

计算与语言 · 计算机科学 2021-01-01 Zhuofeng Wu , Sinong Wang , Jiatao Gu , Madian Khabsa , Fei Sun , Hao Ma

Among different existing graph self-supervised learning strategies, graph contrastive learning (GCL) has been one of the most prevalent approaches to this problem. Despite the remarkable performance those GCL methods have achieved, existing…

机器学习 · 计算机科学 2022-10-27 Qianlong Wen , Zhongyu Ouyang , Chunhui Zhang , Yiyue Qian , Yanfang Ye , Chuxu Zhang

Contrastive Learning (CL)-based recommender systems have gained prominence in the context of Heterogeneous Graph (HG) due to their capacity to enhance the consistency of representations across different views. However, existing frameworks…

信息检索 · 计算机科学 2024-07-30 Lei Sang , Yu Wang , Yi Zhang , Yiwen Zhang , Xindong Wu

For anomaly detection (AD), early approaches often train separate models for individual classes, yielding high performance but posing challenges in scalability and resource management. Recent efforts have shifted toward training a single…

计算机视觉与模式识别 · 计算机科学 2025-07-18 Lei Fan , Junjie Huang , Donglin Di , Anyang Su , Tianyou Song , Maurice Pagnucco , Yang Song

Recently, some contrastive learning methods have been proposed to simultaneously learn representations and clustering assignments, achieving significant improvements. However, these methods do not take the category information and…

计算机视觉与模式识别 · 计算机科学 2021-04-06 Huasong Zhong , Jianlong Wu , Chong Chen , Jianqiang Huang , Minghua Deng , Liqiang Nie , Zhouchen Lin , Xian-Sheng Hua

Contrastive learning is commonly used as a method of self-supervised learning with the "anchor" and "positive" being two random augmentations of a given input image, and the "negative" is the set of all other images. However, the…

计算机视觉与模式识别 · 计算机科学 2022-08-16 Rishab Balasubramanian , Kunal Rathore

With the growing use of Retrieval-Augmented Generation (RAG), training large language models (LLMs) for context-sensitive reasoning and faithfulness is increasingly important. Existing RAG-oriented reinforcement learning (RL) methods rely…

计算与语言 · 计算机科学 2026-03-06 Zhehao Tan , Yihan Jiao , Dan Yang , Junjie Wang , Duolin Sun , Jie Feng , Xidong Wang , Lei Liu , Yue Shen , Jian Wang , Jinjie Gu

Label distribution learning (LDL) is a new machine learning paradigm for solving label ambiguity. Since it is difficult to directly obtain label distributions, many studies are focusing on how to recover label distributions from logical…

机器学习 · 计算机科学 2023-05-17 Yifei Wang , Yiyang Zhou , Jihua Zhu , Xinyuan Liu , Wenbiao Yan , Zhiqiang Tian

Recent advances in unsupervised deep graph clustering have been significantly promoted by contrastive learning. Despite the strides, most graph contrastive learning models face challenges: 1) graph augmentation is used to improve learning…

机器学习 · 计算机科学 2024-08-23 Chusheng Zeng , Bocheng Wang , Jinghui Yuan , Rong Wang , Mulin Chen

In reinforcement learning (RL), it is challenging to learn directly from high-dimensional observations, where data augmentation has recently been shown to remedy this via encoding invariances from raw pixels. Nevertheless, we empirically…

机器学习 · 计算机科学 2023-12-20 Chenyu Sun , Hangwei Qian , Chunyan Miao

Causal reasoning and logical reasoning are two important types of reasoning abilities for human intelligence. However, their relationship has not been extensively explored under machine intelligence context. In this paper, we explore how…

信息检索 · 计算机科学 2023-07-06 Jianchao Ji , Zelong Li , Shuyuan Xu , Max Xiong , Juntao Tan , Yingqiang Ge , Hao Wang , Yongfeng Zhang

Contrastive learning has achieved remarkable success in self-supervised representation learning, often guided by information-theoretic objectives such as mutual information maximization. Motivated by the limitations of static augmentations…

机器学习 · 计算机科学 2026-03-16 Jiansong Zhang , Zhuoqin Yang , Xu Wu , Xiaoling Luo , Peizhong Liu , Linlin Shen

Recently, self-supervised learning has attracted great attention, since it only requires unlabeled data for model training. Contrastive learning is one popular method for self-supervised learning and has achieved promising empirical…

机器学习 · 计算机科学 2023-03-03 Weiran Huang , Mingyang Yi , Xuyang Zhao , Zihao Jiang

We study generating abstractive summaries that are faithful and factually consistent with the given articles. A novel contrastive learning formulation is presented, which leverages both reference summaries, as positive training data, and…

计算与语言 · 计算机科学 2021-09-21 Shuyang Cao , Lu Wang

In response to an object presentation, supervised learning schemes generally respond with a parsimonious label. Upon a similar presentation we humans respond again with a label, but are flooded, in addition, by a myriad of associations. A…

计算机视觉与模式识别 · 计算机科学 2024-10-01 Daniel N. Nissani

Contrastive learning is a family of self-supervised methods where a model is trained to solve a classification task constructed from unlabeled data. It has recently emerged as one of the leading learning paradigms in the absence of labels…

机器学习 · 统计学 2021-03-05 Bingbin Liu , Pradeep Ravikumar , Andrej Risteski

Whilst contrastive learning has recently brought notable benefits to deep clustering of unlabelled images by learning sample-specific discriminative visual features, its potential for explicitly inferring class decision boundaries is less…

计算机视觉与模式识别 · 计算机科学 2022-11-22 Jiabo Huang , Shaogang Gong

Most of previous machine learning algorithms are proposed based on the i.i.d. hypothesis. However, this ideal assumption is often violated in real applications, where selection bias may arise between training and testing process. Moreover,…

计算机视觉与模式识别 · 计算机科学 2018-08-24 Zheyan Shen , Peng Cui , Kun Kuang , Bo Li , Peixuan Chen

Contrastive learning yields impressive results for self-supervision in computer vision. The approach relies on the creation of positive pairs, something which is often achieved through augmentations. However, for multivariate time series…

信号处理 · 电气工程与系统科学 2026-05-25 Thea Brüsch , Mikkel N. Schmidt , Tommy S. Alstrøm