Expansão semântica de consultas com o auxílio de georreferenciamento de termos.

Abstract

Toward the quickly growing of information available on the web, to recover, in a simple and efficient way, documents that meet the increasingly specific needs of the users is the major challenge in Information Retrieval (IR). Besides the large amount of information, another issue that interferes on process of acquisition by the user is the fact, that information need be expressed with a few keywords. In this scenario, query expansion techniques are applied in order to add new terms to the original query in order to enrich it semantically. Most of these expansion techniques have been applied to geographic locations terms, because the geographical context plays an important role in identifying the real user needs. However, these techniques are restricted to terms that represent a geographic location and fail to consider that the vocabulary used by is different according to geographical region. So, i f the user uses a term of his knowledge, in other words, from its region, to do a search for documents from other region, and this term isn't widely used in this region, the result of your query will be compromised. Therefore, this paper presents an information retrieval system, which uses the geographical context of the terms to semantically expand users' queries.