A lazy man's way to part-of-speech tagging

  • Authors:
  • Norshuhani Zamin;Alan Oxley;Zainab Abu Bakar;Syed Ahmad Farhan

  • Affiliations:
  • Faculty of Science and Information Technology, Universiti Teknologi Mara, Shah Alam, Selangor, Malaysia;Faculty of Science and Information Technology, Universiti Teknologi Mara, Shah Alam, Selangor, Malaysia;Faculty of Computer and Mathematical Sciences, Universiti Teknologi Mara, Shah Alam, Selangor, Malaysia;Faculty of Engineering, Universiti Teknologi PETRONAS, Tronoh, Perak, Malaysia

  • Venue:
  • PKAW'12 Proceedings of the 12th Pacific Rim conference on Knowledge Management and Acquisition for Intelligent Systems
  • Year:
  • 2012

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Abstract

A statistical-based approach to word alignment involving automatically projecting part-of-speech (POS) tags is presented. The approach is referred to as the "lazy man's way" because it improves POS assignment for a resource-poor language by exploiting its similarity to a resource-rich one. This unsupervised learning method combines the N-gram and Dice Coefficient similarity functions in order to align English texts with Malay texts thus projecting the POS tags from English to Malay. It is a quick method that does not require the laborious effort needed to annotate the Malay dataset. A case study, an experiment done on 25 terrorism news articles written in Malay, has shown that leveraging pre-existing resources from a resource-rich language, i.e. English, to supplement a resource-poor language, i.e. Malay, is feasible and avoids building new text-processing tools from scratch. The system was tested on the Malay corpus, consisting of 5413 word tokens. The results reached values of 86.87% for precision, 72.56% for recall and 79.07% for F1-Score. This shows that the "lazy man's way", where a resource-poor language just exploits the rich linguistic information available in English, increases bitext projection accuracy significantly.