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Accents play a pivotal role in shaping human communication, enhancing our ability to convey and comprehend messages with clarity and cultural nuance. While there has been significant progress in Automatic Speech Recognition (ASR),…

Computation and Language · Computer Science 2025-06-24 Bonaventure F. P. Dossou

Semi-supervised learning approaches train on small sets of labeled data along with large sets of unlabeled data. Self-training is a semi-supervised teacher-student approach that often suffers from the problem of "confirmation bias" that…

Machine Learning · Computer Science 2023-01-19 Aswathnarayan Radhakrishnan , Jim Davis , Zachary Rabin , Benjamin Lewis , Matthew Scherreik , Roman Ilin

We present a cost-effective approach for developing Automatic Speech Recognition (ASR) models for low-resource languages like Ika. We fine-tune the pretrained wav2vec 2.0 Massively Multilingual Speech Models on a high-quality speech dataset…

Computation and Language · Computer Science 2024-10-03 Uchenna Nzenwata , Daniel Ogbuigwe

This paper proposes a self-learning method to incrementally train (fine-tune) a personalized Keyword Spotting (KWS) model after the deployment on ultra-low power smart audio sensors. We address the fundamental problem of the absence of…

Sound · Computer Science 2025-03-10 Manuele Rusci , Francesco Paci , Marco Fariselli , Eric Flamand , Tinne Tuytelaars

In semi-supervised learning, the prevailing understanding suggests that observing additional unlabeled samples improves estimation accuracy for linear parameters only in the case of model misspecification. In this work, we challenge such a…

Methodology · Statistics 2025-09-03 Kai Chen , Yuqian Zhang

The goal of this paper is to train effective self-supervised speaker representations without identity labels. We propose two curriculum learning strategies within a self-supervised learning framework. The first strategy aims to gradually…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-15 Hee-Soo Heo , Jee-weon Jung , Jingu Kang , Youngki Kwon , You Jin Kim , Bong-Jin Lee , Joon Son Chung

Semi-supervised learning (SSL) is a popular setting aiming to effectively utilize unlabelled data to improve model performance in downstream natural language processing (NLP) tasks. Currently, there are two popular approaches to make use of…

Computation and Language · Computer Science 2023-05-23 Zhengxiang Shi , Francesco Tonolini , Nikolaos Aletras , Emine Yilmaz , Gabriella Kazai , Yunlong Jiao

Self-training is one of the earliest and simplest semi-supervised methods. The key idea is to augment the original labeled dataset with unlabeled data paired with the model's prediction (i.e. the pseudo-parallel data). While self-training…

Machine Learning · Computer Science 2020-10-20 Junxian He , Jiatao Gu , Jiajun Shen , Marc'Aurelio Ranzato

Audio-visual speech recognition has received a lot of attention due to its robustness against acoustic noise. Recently, the performance of automatic, visual, and audio-visual speech recognition (ASR, VSR, and AV-ASR, respectively) has been…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Pingchuan Ma , Alexandros Haliassos , Adriana Fernandez-Lopez , Honglie Chen , Stavros Petridis , Maja Pantic

The utilization of speech Self-Supervised Learning (SSL) models achieves impressive performance on Automatic Speech Recognition (ASR). However, in low-resource language ASR, they encounter the domain mismatch problem between pre-trained and…

Phoneme-level computer-assisted pronunciation training systems typically rely on phoneme-level annotations, which are costly and scarce. In this work, we investigate whether phoneme-level mispronunciation information can be learned without…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-25 Jazmín Vidal , Luciana Ferrer

In automatic speech recognition, any factor that alters the acoustic properties of speech can pose a challenge to the system's performance. This paper presents a novel approach for automatic whispered speech recognition in the Irish dialect…

Audio and Speech Processing · Electrical Eng. & Systems 2024-11-05 Aref Farhadipour , Homa Asadi , Volker Dellwo

Large-scale training corpora have significantly improved the performance of ASR models. Unfortunately, due to the relative scarcity of data, Chinese accents and dialects remain a challenge for most ASR models. Recent advancements in…

Computation and Language · Computer Science 2025-06-17 Tianyi Xu , Hongjie Chen , Wang Qing , Lv Hang , Jian Kang , Li Jie , Zhennan Lin , Yongxiang Li , Xie Lei

Supervised ASR models have reached unprecedented levels of accuracy, thanks in part to ever-increasing amounts of labelled training data. However, in many applications and locales, only moderate amounts of data are available, which has led…

Training speech recognizers with unpaired speech and text -- known as unsupervised speech recognition (UASR) -- is a crucial step toward extending ASR to low-resource languages in the long-tail distribution and enabling multimodal learning…

Computation and Language · Computer Science 2025-10-07 Liming Wang , Junrui Ni , Kai-Wei Chang , Saurabhchand Bhati , David Harwath , Mark Hasegawa-Johnson , James R. Glass

Semi-Supervised Learning (SSL) is a framework that utilizes both labeled and unlabeled data to enhance model performance. Conventional SSL methods operate under the assumption that labeled and unlabeled data share the same label space.…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Noam Fluss , Guy Hacohen , Daphna Weinshall

Self-supervised pre-training using unlabeled data is widely used in automatic speech recognition. In this paper, we propose a new self-supervised pre-training approach to dealing with heterogeneous data. Instead of mixing all the data and…

Machine Learning · Computer Science 2025-09-10 Xiaodong Cui , A F M Saif , Brian Kingsbury , Tianyi Chen

There has been a growing concern about the fairness of decision-making systems based on machine learning. The shortage of labeled data has been always a challenging problem facing machine learning based systems. In such scenarios,…

Machine Learning · Computer Science 2020-01-01 Vahid Noroozi , Sara Bahaadini , Samira Sheikhi , Nooshin Mojab , Philip S. Yu

Learning to recognize new keywords with just a few examples is essential for personalizing keyword spotting (KWS) models to a user's choice of keywords. However, modern KWS models are typically trained on large datasets and restricted to a…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-07 Abhijeet Awasthi , Kevin Kilgour , Hassan Rom

Unsupervised representation learning has recently helped automatic speech recognition (ASR) to tackle tasks with limited labeled data. Following this, hardware limitations and applications give rise to the question how to take advantage of…

Audio and Speech Processing · Electrical Eng. & Systems 2023-08-21 Peter Vieting , Christoph Lüscher , Julian Dierkes , Ralf Schlüter , Hermann Ney
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