Summary of the paper

Title Grammar Extraction from Treebanks for Hindi and Telugu
Authors Prasanth Kolachina, Sudheer Kolachina, Anil Kumar Singh, Samar Husain, Viswanath Naidu, Rajeev Sangal and Aksar Bharati
Abstract Grammars play an important role in many Natural Language Processing (NLP) applications. The traditional approach to creating grammars manually, besides being labor-intensive, has several limitations. With the availability of large scale syntactically annotated treebanks, it is now possible to automatically extract an approximate grammar of a language in any of the existing formalisms from a corresponding treebank. In this paper, we present a basic approach to extract grammars from dependency treebanks of two Indian languages, Hindi and Telugu. The process of grammar extraction requires a generalization mechanism. Towards this end, we explore an approach which relies on generalization of argument structure over the verbs based on their syntactic similarity. Such a generalization counters the effect of data sparseness in the treebanks. A grammar extracted using this system can not only expand already existing knowledge bases for NLP tasks such as parsing, but also aid in the creation of grammars for languages where none exist. Further, we show that the grammar extraction process can help in identifying annotation errors and thus aid in the task of the treebank validation.
Topics Lexicon, lexical database, Knowledge Discovery/Representation, Grammar and Syntax
Full paper Grammar Extraction from Treebanks for Hindi and Telugu
Slides -
Bibtex @InProceedings{KOLACHINA10.854,
  author = {Prasanth Kolachina and Sudheer Kolachina and Anil Kumar Singh and Samar Husain and Viswanath Naidu and Rajeev Sangal and Aksar Bharati},
  title = {Grammar Extraction from Treebanks for Hindi and Telugu},
  booktitle = {Proceedings of the Seventh International Conference on Language Resources and Evaluation (LREC'10)},
  year = {2010},
  month = {may},
  date = {19-21},
  address = {Valletta, Malta},
  editor = {Nicoletta Calzolari (Conference Chair) and Khalid Choukri and Bente Maegaard and Joseph Mariani and Jan Odijk and Stelios Piperidis and Mike Rosner and Daniel Tapias},
  publisher = {European Language Resources Association (ELRA)},
  isbn = {2-9517408-6-7},
  language = {english}
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