A first step towards answering comparison questions in open-domain QA
Speaker: Silke Scheible
Institution: University of Edinburgh
Abstract:
In order to handle the question "What's the difference between X and Y?" in open-domain Question Answering, a first crucial step is to understand which concepts are to be compared when X and Y are polysemous. In this talk I will describe an investigation of the senses people choose to use in answering these questions and the way in which WordNet can be used in replicating their choices. Three approaches are tested and evaluated, based on the frequency, similarity or relatedness of the question terms. A relatedness measure proposed by Banerjee and Pedersen (2003) was found to achieve the highest accuracy.