Summary on the ISCSLP 2022 Chinese-English Code-Switching ASR Challenge

TL;DR

This paper discusses the ISCSLP 2022 Chinese-English code-switching ASR challenge, highlighting datasets, baseline systems, participant results, and techniques used to improve recognition accuracy in multilingual speech scenarios.

Contribution

It introduces the challenge setup, datasets, baseline systems, and summarizes the techniques and results achieved by participating teams.

Findings

Winner achieved 16.70% MER on test set

Over 40 teams participated in the challenge

9.8% absolute MER improvement over baseline

Abstract

Code-switching automatic speech recognition becomes one of the most challenging and the most valuable scenarios of automatic speech recognition, due to the code-switching phenomenon between multilingual language and the frequent occurrence of code-switching phenomenon in daily life. The ISCSLP 2022 Chinese-English Code-Switching Automatic Speech Recognition (CSASR) Challenge aims to promote the development of code-switching automatic speech recognition. The ISCSLP 2022 CSASR challenge provided two training sets, TAL_CSASR corpus and MagicData-RAMC corpus, a development and a test set for participants, which are used for CSASR model training and evaluation. Along with the challenge, we also provide the baseline system performance for reference. As a result, more than 40 teams participated in this challenge, and the winner team achieved 16.70% Mixture Error Rate (MER) performance on the test set and has achieved 9.8% MER absolute improvement compared with the baseline system. In this paper, we will describe the datasets, the associated baselines system and the requirements, and summarize the CSASR challenge results and major techniques and tricks used in the submitted systems.