Expansão de Consultas Utilizando Indexação Semântica Latente

Cristiane Amorim MendesEdleno Silva de MouraNivio Ziviani

This works presents a new query expansion method that improves the quality of the query results in information retrieval systems. Query expansion methods are useful in these systems because they avoid the necessity of an exact word matching between the query and the relevant documents. Beside this important advantage, our method has obtained an improvement of up to 14.9 in the average precision when compared against the system without query expansion. The gain in precision for the top ten results was roughly the same, which indicates that our method may be a good alternative to be used in information retrieval systems.

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