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Due to high data demands of current methods, attention to zero-shot cross-lingual spoken language understanding (SLU) has grown, as such approaches greatly reduce human annotation effort. However, existing models solely rely on shared…

Computation and Language · Computer Science 2022-04-19 Libo Qin , Qiguang Chen , Tianbao Xie , Qixin Li , Jian-Guang Lou , Wanxiang Che , Min-Yen Kan

We introduce COLA, a self-supervised pre-training approach for learning a general-purpose representation of audio. Our approach is based on contrastive learning: it learns a representation which assigns high similarity to audio segments…

Sound · Computer Science 2020-10-22 Aaqib Saeed , David Grangier , Neil Zeghidour

Recent neural-based aspect-based sentiment analysis approaches, though achieving promising improvement on benchmark datasets, have reported suffering from poor robustness when encountering confounder such as non-target aspects. In this…

Computation and Language · Computer Science 2021-04-26 Zhen Bi , Ningyu Zhang , Ganqiang Ye , Haiyang Yu , Xi Chen , Huajun Chen

Recent works on domain adaptation exploit adversarial training to obtain domain-invariant feature representations from the joint learning of feature extractor and domain discriminator networks. However, domain adversarial methods render…

Computer Vision and Pattern Recognition · Computer Science 2019-10-15 Seungmin Lee , Dongwan Kim , Namil Kim , Seong-Gyun Jeong

Under partial-label learning (PLL) where, for each training instance, only a set of ambiguous candidate labels containing the unknown true label is accessible, contrastive learning has recently boosted the performance of PLL on vision…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Shiyu Xia , Jiaqi Lv , Ning Xu , Gang Niu , Xin Geng

Contrastive learning (CL) has emerged as a powerful framework for learning representations of images and text in a self-supervised manner while enhancing model robustness against adversarial attacks. More recently, researchers have extended…

Machine Learning · Computer Science 2023-12-04 Filippo Guerranti , Zinuo Yi , Anna Starovoit , Rafiq Kamel , Simon Geisler , Stephan Günnemann

What matters for contrastive learning? We argue that contrastive learning heavily relies on informative features, or "hard" (positive or negative) features. Early works include more informative features by applying complex data…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Jiangmeng Li , Wenwen Qiang , Changwen Zheng , Bing Su , Hui Xiong

Vision transformers (ViT) have made substantial progress for classification tasks in computer vision. Recently, Gong et. al. '21, introduced attention-based modeling for several audio tasks. However, relatively unexplored is the use of a…

Sound · Computer Science 2024-07-08 Chirag Goel , Surya Koppisetti , Ben Colman , Ali Shahriyari , Gaurav Bharaj

There is a growing need for Large Language Models (LLMs) to effectively use tools and external Application Programming Interfaces (APIs) to plan and complete tasks. As such, there is tremendous interest in methods that can acquire…

Capturing patterns of variation present in a dataset is important in exploratory data analysis and unsupervised learning. Contrastive dimension reduction methods, such as contrastive principal component analysis (cPCA), find patterns unique…

Machine Learning · Computer Science 2021-04-19 Robin Tu , Alexander H. Foss , Sihai D. Zhao

In this paper, we introduce LInK, a novel framework that integrates contrastive learning of performance and design space with optimization techniques for solving complex inverse problems in engineering design with discrete and continuous…

Machine Learning · Computer Science 2025-02-11 Amin Heyrani Nobari , Akash Srivastava , Dan Gutfreund , Kai Xu , Faez Ahmed

Neural networks have revolutionized various domains, exhibiting remarkable accuracy in tasks like natural language processing and computer vision. However, their vulnerability to slight alterations in input samples poses challenges,…

Computer Vision and Pattern Recognition · Computer Science 2023-11-15 Shashank Kotyan , Danilo Vasconcellos Vargas

Cross-domain offline reinforcement learning leverages source domain data with diverse transition dynamics to alleviate the data requirement for the target domain. However, simply merging the data of two domains leads to performance…

Machine Learning · Computer Science 2024-05-13 Xiaoyu Wen , Chenjia Bai , Kang Xu , Xudong Yu , Yang Zhang , Xuelong Li , Zhen Wang

Trapped by the label scarcity in molecular property prediction and drug design, graph contrastive learning (GCL) came forward. Leading contrastive learning works show two kinds of view generators, that is, random or learnable data…

Machine Learning · Computer Science 2025-01-16 Xueyuan Chen , Shangzhe Li , Ruomei Liu , Bowen Shi , Jiaheng Liu , Junran Wu , Ke Xu

Deep neural networks (DNNs) have achieved remarkable success in computer vision tasks such as image classification, segmentation, and object detection. However, they are vulnerable to adversarial attacks, which can cause incorrect…

Computer Vision and Pattern Recognition · Computer Science 2025-11-03 Suklav Ghosh , Sonal Kumar , Arijit Sur

Network intrusion detection remains a critical challenge in cybersecurity. While supervised machine learning models achieve state-of-the-art performance, their reliance on large labelled datasets makes them impractical for many real-world…

Machine Learning · Computer Science 2025-09-09 Jack Wilkie , Hanan Hindy , Christos Tachtatzis , Robert Atkinson

Aspect-based sentiment analysis (ASBA) is a refined approach to sentiment analysis that aims to extract and classify sentiments based on specific aspects or features of a product, service, or entity. Unlike traditional sentiment analysis,…

Computation and Language · Computer Science 2025-01-16 Karukriti Kaushik Ghosh , Chiranjib Sur

3D captioning, which aims to describe the content of 3D scenes in natural language, remains highly challenging due to the inherent sparsity of point clouds and weak cross-modal alignment in existing methods. To address these challenges, we…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Ting Huang , Zeyu Zhang , Yemin Wang , Hao Tang

We present a new technique called contrastive principal component analysis (cPCA) that is designed to discover low-dimensional structure that is unique to a dataset, or enriched in one dataset relative to other data. The technique is a…

Machine Learning · Statistics 2017-11-23 Abubakar Abid , Martin J. Zhang , Vivek K. Bagaria , James Zou

Graph contrastive learning (GCL) has become a hot topic in the field of graph representation learning. In contrast to traditional supervised learning relying on a large number of labels, GCL exploits augmentation strategies to generate…

Machine Learning · Computer Science 2025-03-28 Jianqing Liang , Xinkai Wei , Min Chen , Zhiqiang Wang , Jiye Liang