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Multi-behavioral recommendation optimizes user experiences by providing users with more accurate choices based on their diverse behaviors, such as view, add to cart, and purchase. Current studies on multi-behavioral recommendation mainly…

信息检索 · 计算机科学 2024-04-19 Shunpan Liang , Junjie Zhao , Chen Li , Yu Lei

Contrastive learning has emerged as a powerful method in deep learning, excelling at learning effective representations through contrasting samples from different distributions. However, dimensional collapse, where embeddings converge into…

机器学习 · 计算机科学 2025-12-10 Huanran Li , Manh Nguyen , Daniel Pimentel-Alarcón

Contrastive learning models have demonstrated impressive abilities to capture semantic similarities by aligning representations in the embedding space. However, their performance can be limited by the quality of the training data and its…

计算机视觉与模式识别 · 计算机科学 2025-03-27 Amirabbas Afzali , Borna Khodabandeh , Ali Rasekh , Mahyar JafariNodeh , Sepehr kazemi , Simon Gottschalk

Unsupervised out-of-distribution (OOD) Detection aims to separate the samples falling outside the distribution of training data without label information. Among numerous branches, contrastive learning has shown its excellent capability of…

计算机视觉与模式识别 · 计算机科学 2023-02-07 Menglong Chen , Xingtai Gui , Shicai Fan

Contrastive Language Image Pre-training (CLIP) has recently demonstrated success across various tasks due to superior feature representation empowered by image-text contrastive learning. However, the instance discrimination method used by…

计算机视觉与模式识别 · 计算机科学 2024-11-07 Xiang An , Kaicheng Yang , Xiangzi Dai , Ziyong Feng , Jiankang Deng

Density ratio estimation is a core concept in statistical machine learning because it provides a unified mechanism for tasks such as importance weighting, divergence estimation, and likelihood-free inference, but its potential in vision and…

计算机视觉与模式识别 · 计算机科学 2025-12-01 Fumiya Uchiyama , Rintaro Yanagi , Shohei Taniguchi , Shota Takashiro , Masahiro Suzuki , Hirokatsu Kataoka , Yusuke Iwasawa , Yutaka Matsuo

Understanding the vulnerability of large-scale pre-trained vision-language models like CLIP against adversarial attacks is key to ensuring zero-shot generalization capacity on various downstream tasks. State-of-the-art defense mechanisms…

计算机视觉与模式识别 · 计算机科学 2024-05-21 Fan Yang , Mingxuan Xia , Sangzhou Xia , Chicheng Ma , Hui Hui

Rehearsal approaches in class incremental learning (CIL) suffer from decision boundary overfitting to new classes, which is mainly caused by two factors: insufficiency of old classes data for knowledge distillation and imbalanced data…

机器学习 · 计算机科学 2024-09-27 Kunchi Li , Jun Wan , Shan Yu

In recent years, graph contrastive learning (GCL) has received increasing attention in recommender systems due to its effectiveness in reducing bias caused by data sparsity. However, most existing GCL models rely on heuristic approaches and…

信息检索 · 计算机科学 2024-07-23 Jiakai Tang , Sunhao Dai , Zexu Sun , Xu Chen , Jun Xu , Wenhui Yu , Lantao Hu , Peng Jiang , Han Li

Task-oriented semantic communication systems have emerged as a promising approach to achieving efficient and intelligent data transmission in next-generation networks, where only information relevant to a specific task is communicated. This…

机器学习 · 计算机科学 2025-07-03 Omar Erak , Omar Alhussein , Wen Tong

Despite the success of contrastive learning (CL) in vision and language, its theoretical foundations and mechanisms for building representations remain poorly understood. In this work, we build connections between noise contrastive…

机器学习 · 计算机科学 2025-02-28 Zihao Chen , Chi-Heng Lin , Ran Liu , Jingyun Xiao , Eva L Dyer

Contrastive learning approaches have achieved great success in learning visual representations with few labels of the target classes. That implies a tantalizing possibility of scaling them up beyond a curated "seed" benchmark, to…

计算机视觉与模式识别 · 计算机科学 2021-12-10 Ziyu Jiang , Tianlong Chen , Ting Chen , Zhangyang Wang

Contrastive learning has been widely studied in sentence representation learning. However, earlier works mainly focus on the construction of positive examples, while in-batch samples are often simply treated as negative examples. This…

计算与语言 · 计算机科学 2023-05-18 Jinghao Deng , Fanqi Wan , Tao Yang , Xiaojun Quan , Rui Wang

Conversational systems have a Natural Language Understanding (NLU) module. In this module, there is a task known as an intent classification that aims at identifying what a user is attempting to achieve from an utterance. Previous works use…

计算与语言 · 计算机科学 2024-11-12 Jeanfranco D. Farfan-Escobedo , Julio C. Dos Reis

Recognizing underwater targets from acoustic signals is a challenging task owing to the intricate ocean environments and variable underwater channels. While deep learning-based systems have become the mainstream approach for underwater…

声音 · 计算机科学 2024-02-21 Yuan Xie , Jiawei Ren , Ji Xu

The rapid growth of deep learning has brought about powerful models that can handle various tasks, like identifying images and understanding language. However, adversarial attacks, an unnoticed alteration, can deceive models, leading to…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Sampriti Soor , Alik Pramanick , Jothiprakash K , Arijit Sur

This paper studies continual learning (CL) of a sequence of aspect sentiment classification(ASC) tasks in a particular CL setting called domain incremental learning (DIL). Each task is from a different domain or product. The DIL setting is…

计算与语言 · 计算机科学 2021-12-21 Zixuan Ke , Bing Liu , Hu Xu , Lei Shu

Recent graph-based models for multi-intent SLU have obtained promising results through modeling the guidance from the prediction of intents to the decoding of slot filling. However, existing methods (1) only model the unidirectional…

计算与语言 · 计算机科学 2023-12-08 Bowen Xing , Ivor W. Tsang

Video object detection is a challenging task because videos often suffer from image deterioration such as motion blur, occlusion, and deformable shapes, making it significantly more difficult than detecting objects in still images. Prior…

计算机视觉与模式识别 · 计算机科学 2025-08-29 Lucas Rakotoarivony

Contrastive learning (CL) has been successful as a powerful representation learning method. In this work we propose CLIM: Contrastive Learning with mutual Information Maximization, to explore the potential of CL on cross-domain sentiment…

计算与语言 · 计算机科学 2020-11-13 Tian Li , Xiang Chen , Shanghang Zhang , Zhen Dong , Kurt Keutzer