A speech-first model for repair detection and correction

  • Authors:
  • Christine Nakatani;Julia Hirschberg

  • Affiliations:
  • Harvard University, Cambridge, MA;2D-450, AT&T Bell Laboratories, Murray Hill, NJ

  • Venue:
  • ACL '93 Proceedings of the 31st annual meeting on Association for Computational Linguistics
  • Year:
  • 1993

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Abstract

Interpreting fully natural speech is an important goal for spoken language understanding systems. However, while corpus studies have shown that about 10% of spontaneous utterances contain self-corrections, or REPAIRS, little is known about the extent to which cues in the speech signal may facilitate repair processing. We identify several cues based on acoustic and prosodic analysis of repairs in a corpus of spontaneous speech, and propose methods for exploiting these cues to detect and correct repairs. We test our acoustic-prosodic cues with other lexical cues to repair identification and find that precision rates of 89--93% and recall of 78--83% can be achieved, depending upon the cues employed, from a prosodically labeled corpus.