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This paper proposes a method for representation learning of multimodal data using contrastive losses. A traditional approach is to contrast different modalities to learn the information shared between them. However, that approach could fail…

计算机视觉与模式识别 · 计算机科学 2021-07-07 Yunze Liu , Qingnan Fan , Shanghang Zhang , Hao Dong , Thomas Funkhouser , Li Yi

Contrastive learning methods enforce label distance relationships in feature space to improve representation capability for regression models. However, these methods highly depend on label information to correctly recover ordinal…

机器学习 · 计算机科学 2025-12-11 Ce Wang , Weihang Dai , Hanru Bai , Xiaomeng Li

The increasing popularity of the Web has subsequently increased the abundance of reviews on products and services. Mining these reviews for expressed sentiment is beneficial for both companies and consumers, as quality can be improved based…

计算与语言 · 计算机科学 2021-12-01 Ron Hochstenbach , Flavius Frasincar , Maria Mihaela Trusca

Advances in deep learning and representation learning have transformed item factor analysis (IFA) in the item response theory (IRT) literature by enabling more efficient and accurate parameter estimation. Variational Autoencoders (VAEs)…

机器学习 · 统计学 2025-11-03 Nanyu Luo , Feng Ji

The goal of self-supervised learning (SSL) for automatic speech recognition (ASR) is to learn good speech representations from a large amount of unlabeled speech for the downstream ASR task. However, most SSL frameworks do not consider…

计算与语言 · 计算机科学 2022-01-27 Yiming Wang , Jinyu Li , Heming Wang , Yao Qian , Chengyi Wang , Yu Wu

Aspect-based Sentiment Analysis (ABSA) is crucial for understanding sentiment nuances in text, especially across diverse languages and cultures. This paper introduces a novel Deep Convolutional Neural Network (CNN)-based model tailored for…

计算与语言 · 计算机科学 2025-11-10 Umar Ibrahim , Abubakar Yakubu Zandam , Fatima Muhammad Adam , Aminu Musa

Aspect-based sentiment analysis (ABSA) is an emerging fine-grained sentiment analysis task that aims to extract aspects, classify corresponding sentiment polarities and find opinions as the causes of sentiment. The latest research tends to…

计算与语言 · 计算机科学 2021-09-20 Chengxi Li , Feiyu Gao , Jiajun Bu , Lu Xu , Xiang Chen , Yu Gu , Zirui Shao , Qi Zheng , Ningyu Zhang , Yongpan Wang , Zhi Yu

Deep learning-based recommender systems have achieved remarkable success in recent years. However, these methods usually heavily rely on labeled data (i.e., user-item interactions), suffering from problems such as data sparsity and…

信息检索 · 计算机科学 2023-10-12 Mengyuan Jing , Yanmin Zhu , Tianzi Zang , Ke Wang

Robust watermarking is critical for intellectual property protection, whereas existing methods face a severe vulnerability against regeneration-based AIGC attacks. We identify that existing methods fail because they entangle the watermark…

机器学习 · 计算机科学 2026-02-26 Haoyuan He , Yu Zheng , Jie Zhou , Jiwen Lu

Anatomical shape analysis plays a pivotal role in clinical research and hypothesis testing, where the relationship between form and function is paramount. Correspondence-based statistical shape modeling (SSM) facilitates population-level…

计算机视觉与模式识别 · 计算机科学 2024-05-17 Jadie Adams , Krithika Iyer , Shireen Elhabian

Contrastive learning has achieved remarkable success in learning effective representations, with supervised contrastive learning often outperforming self-supervised approaches. However, in real-world scenarios, data annotations are often…

机器学习 · 计算机科学 2025-05-29 Zi-Hao Zhou , Jun-Jie Wang , Tong Wei , Min-Ling Zhang

Recently, contrastive learning has been shown to be effective in improving pre-trained language models (PLM) to derive high-quality sentence representations. It aims to pull close positive examples to enhance the alignment while push apart…

计算与语言 · 计算机科学 2022-05-03 Kun Zhou , Beichen Zhang , Wayne Xin Zhao , Ji-Rong Wen

Query-by-Vocal Imitation (QBV) is about searching audio files within databases using vocal imitations created by the user's voice. Since most humans can effectively communicate sound concepts through voice, QBV offers the more intuitive and…

音频与语音处理 · 电气工程与系统科学 2024-08-22 Jonathan Greif , Florian Schmid , Paul Primus , Gerhard Widmer

Recently, contrastive self-supervised learning has become a key component for learning visual representations across many computer vision tasks and benchmarks. However, contrastive learning in the context of domain adaptation remains…

计算机视觉与模式识别 · 计算机科学 2021-06-25 Mamatha Thota , Georgios Leontidis

Language features are evolving in real-world social media, resulting in the deteriorating performance of text classification in dynamics. To address this challenge, we study temporal adaptation, where models trained on past data are tested…

计算与语言 · 计算机科学 2023-11-16 Yuji Zhang , Jing Li , Wenjie Li

Neural networks are often biased to spuriously correlated features that provide misleading statistical evidence that does not generalize. This raises an interesting question: ``Does an optimal unbiased functional subnetwork exist in a…

机器学习 · 计算机科学 2023-06-27 Geon Yeong Park , Sangmin Lee , Sang Wan Lee , Jong Chul Ye

The contextual multi-armed bandit (MAB) is a widely used framework for problems requiring sequential decision-making under uncertainty, such as recommendation systems. In applications involving a large number of users, the performance of…

机器学习 · 计算机科学 2025-02-05 Zhiyong Wang , Jiahang Sun , Mingze Kong , Jize Xie , Qinghua Hu , John C. S. Lui , Zhongxiang Dai

This paper presents simple and efficient methods to mitigate sampling bias in active learning while achieving state-of-the-art accuracy and model robustness. We introduce supervised contrastive active learning by leveraging the contrastive…

机器学习 · 计算机科学 2021-09-15 Ranganath Krishnan , Alok Sinha , Nilesh Ahuja , Mahesh Subedar , Omesh Tickoo , Ravi Iyer

Deep Neural Nets (DNNs) learn latent representations induced by their downstream task, objective function, and other parameters. The quality of the learned representations impacts the DNN's generalization ability and the coherence of the…

机器学习 · 计算机科学 2024-02-13 Nir Weingarten , Zohar Yakhini , Moshe Butman , Ran Gilad-Bachrach

We propose a new application of embedding techniques for problem retrieval in adaptive tutoring. The objective is to retrieve problems whose mathematical concepts are similar. There are two challenges: First, like sentences, problems…

计算机与社会 · 计算机科学 2020-03-25 Du Su , Ali Yekkehkhany , Yi Lu , Wenmiao Lu