Vineet Chaitanya

Computational linguistics in India: an overview

Computational linguistics activities in India are being carried out at many institutions. The activities are centred around development of machine translation systems and lexical resources.

AnnCorra: building tree-banks in Indian languages

This paper describes a dependency based tagging scheme for creating tree banks for Indian languages. The scheme has been so designed that it is comprehensive, easy to use with linear notation and economical in typing effort. It is based on Paninian grammatical model.

Natural language processing, complexity theory and logic

In this paper, we have focussed on assignment of meaning to sentences in NL. We have tried to say that theoretical Computer Science in general, and computational complexity theory and logic in particular, have a lot to contribute to NLP. On the other hand NLP has a number of challenging problems which require new ways of thinking and may thus lead to radically new frameworks in theoretical CS, particularly logic. Recent history has several instances where theoretical CS has helped shape research in NLP. At the same time, several open problems in NLP await work, some of which have the potential to throw up radically new frameworks in theoretical Computer Science.

Paninian framework and its application toAnusaraka

ThePaninian framework proposeskarakas as semanticosyntactic relations that play a crucial role in mediating between surface form and meaning. The framework accounts for theta-role assignment, active passive, and control in a uniform manner. It has been successfully used in building an extremely fast prototype machine-translation system between two Indian languages. The constraint parser and the generator are designed with information theoretic considerations. Paninian framework is particularly suited to free word order languages. As most human languages are relatively word-order free, the Paninian framework should be explored as a serious contender for such languages. Based on the Paninian theory, the concept of language accessor oranusaraka has emerged, which has the potential to overcome the language barrier in India.