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Automatic speech recognition (ASR) systems have traditionally been evaluated using English datasets, with the word error rate (WER) serving as the predominant metric. WER's simplicity and ease of interpretation have contributed to its…

Computation and Language · Computer Science 2024-10-21 Thennal D K , Jesin James , Deepa P Gopinath , Muhammed Ashraf K

Word error rate (WER) is a standard metric for the evaluation of Automated Speech Recognition (ASR) systems. However, WER fails to provide a fair evaluation of human perceived quality in presence of spelling variations, abbreviations, or…

Computation and Language · Computer Science 2023-03-10 Satarupa Guha , Rahul Ambavat , Ankur Gupta , Manish Gupta , Rupeshkumar Mehta

We propose a new method for the calculation of error rates in Automatic Speech Recognition (ASR). This new metric is for languages that contain half characters and where the same character can be written in different forms. We implement our…

Computation and Language · Computer Science 2022-06-16 Priyanshi Shah , Harveen Singh Chadha , Anirudh Gupta , Ankur Dhuriya , Neeraj Chhimwal , Rishabh Gaur , Vivek Raghavan

With the strong representational power of large language models (LLMs), generative error correction (GER) for automatic speech recognition (ASR) aims to provide semantic and phonetic refinements to address ASR errors. This work explores how…

Audio and Speech Processing · Electrical Eng. & Systems 2024-10-14 Yuka Ko , Sheng Li , Chao-Han Huck Yang , Tatsuya Kawahara

Automatic Speech Recognition (ASR) transcription errors are commonly assessed using metrics that compare them with a reference transcription, such as Word Error Rate (WER), which measures spelling deviations from the reference, or semantic…

Computation and Language · Computer Science 2025-01-22 Antoine Tholly , Jane Wottawa , Mickael Rouvier , Richard Dufour

Evaluating automatic speech recognition (ASR) systems is a classical but difficult and still open problem, which often boils down to focusing only on the word error rate (WER). However, this metric suffers from many limitations and does not…

Computation and Language · Computer Science 2026-05-01 Thibault Bañeras-Roux , Mickaël Rouvier , Jane Wottawa , Richard Dufour

The common standard for quality evaluation of automatic speech recognition (ASR) systems is reference-based metrics such as the Word Error Rate (WER), computed using manual ground-truth transcriptions that are time-consuming and expensive…

Computation and Language · Computer Science 2023-06-26 Kamer Ali Yuksel , Thiago Ferreira , Ahmet Gunduz , Mohamed Al-Badrashiny , Golara Javadi

Many studies have examined the shortcomings of word error rate (WER) as an evaluation metric for automatic speech recognition (ASR) systems. Since WER considers only literal word-level correctness, new evaluation metrics based on semantic…

Computation and Language · Computer Science 2023-12-04 Zitha Sasindran , Harsha Yelchuri , T. V. Prabhakar , Supreeth Rao

Recent advances in supervised, semi-supervised and self-supervised deep learning algorithms have shown significant improvement in the performance of automatic speech recognition(ASR) systems. The state-of-the-art systems have achieved a…

Computation and Language · Computer Science 2021-10-19 Somnath Roy

We study the problem of evaluating automatic speech recognition (ASR) systems that target dialectal speech input. A major challenge in this case is that the orthography of dialects is typically not standardized. From an ASR evaluation…

Computation and Language · Computer Science 2017-09-25 Ahmed Ali , Preslav Nakov , Peter Bell , Steve Renals

Word Error Rate (WER) is the primary metric used to assess automatic speech recognition (ASR) model quality. It has been shown that ASR models tend to have much higher WER on speakers with speech impairments than typical English speakers.…

Audio and Speech Processing · Electrical Eng. & Systems 2022-09-23 Jimmy Tobin , Qisheng Li , Subhashini Venugopalan , Katie Seaver , Richard Cave , Katrin Tomanek

We study the effect of applying a language model (LM) on the output of Automatic Speech Recognition (ASR) systems for Indic languages. We fine-tune wav2vec $2.0$ models for $18$ Indic languages and adjust the results with language models…

Computation and Language · Computer Science 2022-06-16 Ankur Dhuriya , Harveen Singh Chadha , Anirudh Gupta , Priyanshi Shah , Neeraj Chhimwal , Rishabh Gaur , Vivek Raghavan

We propose a general framework to compute the word error rate (WER) of ASR systems that process recordings containing multiple speakers at their input and that produce multiple output word sequences (MIMO). Such ASR systems are typically…

Audio and Speech Processing · Electrical Eng. & Systems 2023-07-24 Thilo von Neumann , Christoph Boeddeker , Keisuke Kinoshita , Marc Delcroix , Reinhold Haeb-Umbach

This paper presents methods for building speech recognizers tailored for Japanese speaking assessment tasks. Specifically, we build a speech recognizer that outputs phonemic labels with accent markers. Although Japanese is resource-rich,…

Computation and Language · Computer Science 2025-09-26 Yotaro Kubo , Richard Sproat , Chihiro Taguchi , Llion Jones

The Word Error Rate (WER) is the common measure of accuracy for Automatic Speech Recognition (ASR). Transcripts are usually pre-processed by substituting specific characters to account for non-semantic differences. As a result of this…

Computation and Language · Computer Science 2024-09-20 Korbinian Kuhn , Verena Kersken , Gottfried Zimmermann

Evaluating ASR systems for Indian languages is challenging due to spelling variations, suffix splitting flexibility, and non-standard spellings in code-mixed words. Traditional Word Error Rate (WER) often presents a bleaker picture of…

Modern speech synthesis systems have improved significantly, with synthetic speech being indistinguishable from real speech. However, efficient and holistic evaluation of synthetic speech still remains a significant challenge. Human…

Computation and Language · Computer Science 2023-10-03 Dareen Alharthi , Roshan Sharma , Hira Dhamyal , Soumi Maiti , Bhiksha Raj , Rita Singh

Automatic Speech Recognition (ASR) is traditionally evaluated using Word Error Rate (WER), a metric that is insensitive to meaning. Embedding-based semantic metrics are better correlated with human perception, but decoder-based Large…

Traditional ASR metrics like WER and CER fail to capture intelligibility, especially for dysarthric and dysphonic speech, where semantic alignment matters more than exact word matches. ASR systems struggle with these speech types, often…

Machine Learning · Computer Science 2025-12-12 Bornali Phukon , Xiuwen Zheng , Mark Hasegawa-Johnson

While Automatic Speech Recognition (ASR) is typically benchmarked by word error rate (WER), real-world applications ultimately hinge on semantic fidelity. This mismatch is particularly problematic for dysarthric speech, where articulatory…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-30 Xiuwen Zheng , Sixun Dong , Bornali Phukon , Mark Hasegawa-Johnson , Chang D. Yoo
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