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Acoustic Word Embeddings (AWEs) improve the efficiency of speech retrieval tasks such as Spoken Term Detection (STD) and Keyword Spotting (KWS). However, existing approaches suffer from limitations, including unimodal supervision, disjoint…

Sound · Computer Science 2025-12-17 Ramesh Gundluru , Shubham Gupta , Sri Rama Murty K

Handwritten Text Recognition (HTR) is crucial for document digitization, but handwritten data can contain user-identifiable features, like unique writing styles, posing privacy risks. Regulations such as the ``right to be forgotten''…

Computer Vision and Pattern Recognition · Computer Science 2025-10-16 Lei Kang , Xuanshuo Fu , Lluis Gomez , Alicia Fornés , Ernest Valveny , Dimosthenis Karatzas

Contrastive learning is an effective unsupervised method in graph representation learning, and the key component of contrastive learning lies in the construction of positive and negative samples. Previous methods usually utilize the…

Machine Learning · Computer Science 2024-02-07 Shengyu Feng , Baoyu Jing , Yada Zhu , Hanghang Tong

Survival analysis plays a crucial role in many healthcare decisions, where the risk prediction for the events of interest can support an informative outlook for a patient's medical journey. Given the existence of data censoring, an…

Machine Learning · Computer Science 2023-09-29 Mohsen Nayebi Kerdabadi , Arya Hadizadeh Moghaddam , Bin Liu , Mei Liu , Zijun Yao

Electronic health record (EHR) systems contain a wealth of multimodal clinical data including structured data like clinical codes and unstructured data such as clinical notes. However, many existing EHR-focused studies has traditionally…

Machine Learning · Statistics 2025-08-20 Tianxi Cai , Feiqing Huang , Ryumei Nakada , Linjun Zhang , Doudou Zhou

Neural network based speech recognition systems suffer from performance degradation due to accented speech, especially unfamiliar accents. In this paper, we study the supervised contrastive learning framework for accented speech…

Sound · Computer Science 2021-07-05 Tao Han , Hantao Huang , Ziang Yang , Wei Han

The global reach of social media has amplified the spread of hateful content, including implicit sexism, which is often overlooked by conventional detection methods. In this work, we introduce an Adaptive Supervised Contrastive lEarning…

Computation and Language · Computer Science 2025-07-09 Mohammad Zia Ur Rehman , Aditya Shah , Nagendra Kumar

State-of-the-art model for zero-shot cross-lingual spoken language understanding performs cross-lingual unsupervised contrastive learning to achieve the label-agnostic semantic alignment between each utterance and its code-switched data.…

Computation and Language · Computer Science 2024-05-13 Bowen Xing , Ivor W. Tsang

We introduce TempCLR, a new time-coherent contrastive learning approach for the structured regression task of 3D hand reconstruction. Unlike previous time-contrastive methods for hand pose estimation, our framework considers temporal…

Computer Vision and Pattern Recognition · Computer Science 2022-09-02 Andrea Ziani , Zicong Fan , Muhammed Kocabas , Sammy Christen , Otmar Hilliges

This paper investigates unsupervised representation learning for facial expression analysis. We think Unsupervised Facial Expression Representation (UFER) deserves exploration and has the potential to address some key challenges in facial…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Fanglei Xue , Yifan Sun , Yi Yang

Contrastive learning, commonly applied in large-scale multimodal models, often relies on data from diverse and often unreliable sources, which can include misaligned or mislabeled text-image pairs. This frequently leads to robustness issues…

Machine Learning · Computer Science 2025-02-04 Lijie Hu , Chenyang Ren , Huanyi Xie , Khouloud Saadi , Shu Yang , Zhen Tan , Jingfeng Zhang , Di Wang

Electronic health record (EHR) coding is the task of assigning ICD codes to each EHR. Most previous studies either only focus on the frequent ICD codes or treat rare and frequent ICD codes in the same way. These methods perform well on…

Artificial Intelligence · Computer Science 2021-06-30 Shanshan Wang , Pengjie Ren , Zhumin Chen , Zhaochun Ren , Huasheng Liang , Qiang Yan , Evangelos Kanoulas , Maarten de Rijke

Machine unlearning aims to eliminate the influence of a subset of training samples (i.e., unlearning samples) from a trained model. Effectively and efficiently removing the unlearning samples without negatively impacting the overall model…

Machine Learning · Computer Science 2024-01-22 Hong kyu Lee , Qiuchen Zhang , Carl Yang , Jian Lou , Li Xiong

Training state-of-the-art offline handwriting recognition (HWR) models requires large labeled datasets, but unfortunately such datasets are not available in all languages and domains due to the high cost of manual labeling.We address this…

Computer Vision and Pattern Recognition · Computer Science 2018-08-07 Chris Tensmeyer , Curtis Wigington , Brian Davis , Seth Stewart , Tony Martinez , William Barrett

Contrastive learning has gained popularity and pushes state-of-the-art performance across numerous large-scale benchmarks. In contrastive learning, the contrastive loss function plays a pivotal role in discerning similarities between…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Haojin Deng , Yimin Yang

Online handwritten character recognition leverages stroke order and dynamic features, which generally provide higher accuracy and robustness compared with offline recognition. However, in practical applications, rotational deformations can…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Zhe Ling , Sicheng Yu , Danyu Yang

Contrastive learning (CL) has achieved astonishing progress in computer vision, speech, and natural language processing fields recently with self-supervised learning. However, CL approach to the supervised setting is not fully explored,…

Computation and Language · Computer Science 2022-05-23 Zhenyu Zhang , Yuming Zhao , Meng Chen , Xiaodong He

Network representation learning seeks to embed networks into a low-dimensional space while preserving the structural and semantic properties, thereby facilitating downstream tasks such as classification, trait prediction, edge…

Machine Learning · Statistics 2025-09-16 Zihan Dong , Xin Zhou , Ryumei Nakada , Lexin Li , Linjun Zhang

Recently, adversarial training has been incorporated in self-supervised contrastive pre-training to augment label efficiency with exciting adversarial robustness. However, the robustness came at a cost of expensive adversarial training. In…

Machine Learning · Computer Science 2022-11-01 Yijiang Pang , Boyang Liu , Jiayu Zhou

While deep learning models have been extensively utilized in motor imagery based EEG signal recognition, they often operate as black boxes. Motivated by neurological findings indicating that the mental imagery of left or right-hand movement…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Jing Luo , Qi Mao , Weiwei Shi , Zhenghao Shi , Xiaofan Wang , Xiaofeng Lu , Xinhong Hei