Constructing sub-word units for spoken term detection

Charl Johannes van Heerden; Damianos G. Karakos; Karthik Narasimhan; Marelie H. Davel; Richard M. Schwartz

ICASSP 2017accepted0 citations

Constructing sub-word units for spoken term detection

Charl Johannes van Heerden, Damianos G. Karakos, Karthik Narasimhan, Marelie H. Davel, Richard M. Schwartz

Abstract

Spoken term detection, especially of out-of-vocabulary (OOV) keywords, benefits from the use of sub-word systems. We experiment with different language-independent approaches to sub-word unit generation, generating both syllable-like and morpheme-like units, and demonstrate how the performance of syllable-like units can be improved by artificially increasing the number of unique units. The effect of unit choice is empirically evaluated using the eight languages from the 2016 IARPA BABEL evaluation.

BibTeX

@inproceedings{icassp2017_constructingsubw,
  title = {Constructing sub-word units for spoken term detection},
  author = {Charl Johannes van Heerden and Damianos G. Karakos and Karthik Narasimhan and Marelie H. Davel and Richard M. Schwartz},
  booktitle = {ICASSP 2017},
  year = {2017}
}