Antonio Luiz Mattos de Souza Cardoso,  Credine Silva de Menezes. 

Automated Query and Answering systems need tools which help their users to formulate questions and have their answers processed fast and accurately. This paper describes a tool, based on natural language processing, that helps a 'human answerer'to answer different questions. This tool identifies and clusters various similar questions formulated in natural language, so that the 'human answerer'may answer all clustered questions at once. This tool has been developed applying different NLP resources and techniques, such as: Stemming, Query expansion, Thesaurus, Grammar rules of the Portuguese language, Relevance feedback, and Proper names identification

http://www.lbd.dcc.ufmg.br/colecoes/til/2003/0016.pdf

Processando consulta.