PLoS ONE (Jan 2013)

Morpheme matching based text tokenization for a scarce resourced language.

  • Zobia Rehman,
  • Waqas Anwar,
  • Usama Ijaz Bajwa,
  • Wang Xuan,
  • Zhou Chaoying

DOI
https://doi.org/10.1371/journal.pone.0068178
Journal volume & issue
Vol. 8, no. 8
p. e68178

Abstract

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Text tokenization is a fundamental pre-processing step for almost all the information processing applications. This task is nontrivial for the scarce resourced languages such as Urdu, as there is inconsistent use of space between words. In this paper a morpheme matching based approach has been proposed for Urdu text tokenization, along with some other algorithms to solve the additional issues of boundary detection of compound words, affixation, reduplication, names and abbreviations. This study resulted into 97.28% precision, 93.71% recall, and 95.46% F1-measure; while tokenizing a corpus of 57000 words by using a morpheme list with 6400 entries.