Topic and keyword identification for low-resourced speech using cross-language transfer learning

Wenda Chen, Mark Hasegawa-Johnson, Nancy F. Chen

Research output: Contribution to journalConference article

Abstract

This paper studies topic and keyword identification for languages in which we have no transcribed speech data. We adopt a transfer learning framework to transfer what is learned from rich-resourced languages (RRL) to low-resourced languages (LRL). Specifically, we propose that a convolutional neural network (CNN) trained as a topic classifier in an RRL learns features (hidden layer activations) that can be used for the same purpose in an LRL. The CNN observes acoustic features, RRL phones, or segment clusters generated by an unsupervised phone clustering system; its hidden layers are retained, and its output layer re-trained from scratch on the LRL. Our results are compared with the state-of-the-art topic classification methods on cross-language ASR transcripts. We also discuss the successful detection of topic dependent keywords and the use of unsupervised learning based clusters in our approach for low-resourced language topic detection.

Original languageEnglish (US)
Pages (from-to)2047-2051
Number of pages5
JournalProceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
Volume2018-September
DOIs
StatePublished - Jan 1 2018
Event19th Annual Conference of the International Speech Communication, INTERSPEECH 2018 - Hyderabad, India
Duration: Sep 2 2018Sep 6 2018

Keywords

  • Low-resourced languages
  • Speech recognition
  • Topic detection

ASJC Scopus subject areas

  • Language and Linguistics
  • Human-Computer Interaction
  • Signal Processing
  • Software
  • Modeling and Simulation

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