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Speaker recognition, recognizing speaker identities based on voice alone, enables important downstream applications, such as personalization and authentication. Learning speaker representations, in the context of supervised learning,…

Machine Learning · Computer Science 2022-07-13 Metehan Cekic , Ruirui Li , Zeya Chen , Yuguang Yang , Andreas Stolcke , Upamanyu Madhow

The lack of labeled data is a major obstacle in many music information retrieval tasks such as melody extraction, where labeling is extremely laborious or costly. Semi-supervised learning (SSL) provides a solution to alleviate the issue by…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-17 Sangeun Kum , Jing-Hua Lin , Li Su , Juhan Nam

Recent advances in unsupervised speech representation learning discover new approaches and provide new state-of-the-art for diverse types of speech processing tasks. This paper presents an investigation of using wav2vec 2.0 deep speech…

Iterative self-training, or iterative pseudo-labeling (IPL) -- using an improved model from the current iteration to provide pseudo-labels for the next iteration -- has proven to be a powerful approach to enhance the quality of speaker…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-22 Zakaria Aldeneh , Takuya Higuchi , Jee-weon Jung , Li-Wei Chen , Stephen Shum , Ahmed Hussen Abdelaziz , Shinji Watanabe , Tatiana Likhomanenko , Barry-John Theobald

Decentralized learning has been advocated and widely deployed to make efficient use of distributed datasets, with an extensive focus on supervised learning (SL) problems. Unfortunately, the majority of real-world data are unlabeled and can…

Machine Learning · Computer Science 2023-03-01 Lirui Wang , Kaiqing Zhang , Yunzhu Li , Yonglong Tian , Russ Tedrake

While state-of-the-art contrastive Self-Supervised Learning (SSL) models produce results competitive with their supervised counterparts, they lack the ability to infer latent variables. In contrast, prescribed latent variable (LV) models…

Machine Learning · Computer Science 2021-12-01 Jason Ramapuram , Dan Busbridge , Xavier Suau , Russ Webb

Self-supervised learning (SSL) has emerged as a powerful technique for learning rich representations from unlabeled data. The data representations are able to capture many underlying attributes of data, and be useful in downstream…

Machine Learning · Computer Science 2023-12-01 Weicheng Zhu , Sheng Liu , Carlos Fernandez-Granda , Narges Razavian

Robust radio signal recognition is fundamental to spectrum management, electromagnetic space security, and intelligent wireless applications, yet existing deep-learning methods rely heavily on large labeled datasets and struggle to capture…

Signal Processing · Electrical Eng. & Systems 2026-04-14 Shilian Zheng , Jie Chen , Luxin Zhang , Xiaoniu Yang

Sample contrastive methods, typically referred to simply as contrastive are the foundation of most unsupervised methods to learn text and sentence embeddings. On the other hand, a different class of self-supervised loss functions and…

Computation and Language · Computer Science 2023-10-30 Marco Farina , Duccio Pappadopulo

Text Classification is one of the fundamental tasks in natural language processing, which requires an agent to determine the most appropriate category for input sentences. Recently, deep neural networks have achieved impressive performance…

Computation and Language · Computer Science 2023-06-16 Kun Zhang , Le Wu , Guangyi Lv , Enhong Chen , Shulan Ruan , Jing Liu , Zhiqiang Zhang , Jun Zhou , Meng Wang

Recently, contrastive learning has achieved great results in self-supervised learning, where the main idea is to push two augmentations of an image (positive pairs) closer compared to other random images (negative pairs). We argue that not…

Computer Vision and Pattern Recognition · Computer Science 2021-09-13 Ajinkya Tejankar , Soroush Abbasi Koohpayegani , Vipin Pillai , Paolo Favaro , Hamed Pirsiavash

This study addresses the problem of unsupervised subword unit discovery from untranscribed speech. It forms the basis of the ultimate goal of ZeroSpeech 2019, building text-to-speech systems without text labels. In this work, unit discovery…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-29 Siyuan Feng , Tan Lee , Zhiyuan Peng

Contrastive learning has been the dominant approach to train state-of-the-art sentence embeddings. Previous studies have typically learned sentence embeddings either through the use of human-annotated natural language inference (NLI) data…

Computation and Language · Computer Science 2023-10-25 Junlei Zhang , Zhenzhong Lan , Junxian He

This paper aims to build a multi-speaker expressive TTS system, synthesizing a target speaker's speech with multiple styles and emotions. To this end, we propose a novel contrastive learning-based TTS approach to transfer style and emotion…

Audio and Speech Processing · Electrical Eng. & Systems 2024-04-26 Xinfa Zhu , Yuke Li , Yi Lei , Ning Jiang , Guoqing Zhao , Lei Xie

Dense retrieval (DR) has shown promising results in information retrieval. In essence, DR requires high-quality text representations to support effective search in the representation space. Recent studies have shown that pre-trained…

Information Retrieval · Computer Science 2022-08-23 Xinyu Ma , Ruqing Zhang , Jiafeng Guo , Yixing Fan , Xueqi Cheng

Self-supervised learning of speech representations has achieved impressive results in improving automatic speech recognition (ASR). In this paper, we show that data selection is important for self-supervised learning. We propose a simple…

Audio and Speech Processing · Electrical Eng. & Systems 2022-04-06 Zhiyun Lu , Yongqiang Wang , Yu Zhang , Wei Han , Zhehuai Chen , Parisa Haghani

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…

Machine Learning · Computer Science 2025-12-11 Ce Wang , Weihang Dai , Hanru Bai , Xiaomeng Li

Contrastive self-supervised learning (CSL) based on instance discrimination typically attracts positive samples while repelling negatives to learn representations with pre-defined binary self-supervision. However, vanilla CSL is inadequate…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Yifei Zhang , Chang Liu , Yu Zhou , Weiping Wang , Qixiang Ye , Xiangyang Ji

Depression, a prevalent mental health disorder impacting millions globally, demands reliable assessment systems. Unlike previous studies that focus solely on either detecting depression or predicting its severity, our work identifies…

In realistic speech enhancement settings for end-user devices, we often encounter only a few speakers and noise types that tend to reoccur in the specific acoustic environment. We propose a novel personalized speech enhancement method to…

Audio and Speech Processing · Electrical Eng. & Systems 2021-05-11 Sunwoo Kim , Minje Kim