Abstract:

An open-domain question answering system usually contains modules of question analysis, information retrieval, information extraction, and sometimes planning. The role of question analysis module is to generate computational inputs for the other modules. In the Javelin question answering system, it determines answer types and specific subtypes, extracts keywords with their importance, provides keyword expansion, and produces logic representations to be used for language understanding. We will present the definition of answer types, the usage of natural language processing resources contributed to the analysis, and some evaluation results on the question analysis module