This paper investigates the role of a goal parameter in semantics. On the one hand, goals are necessary for a semantics of questions and answers. On the other hand, the eeect of underlying perlocutionary goals on information in context can be modelled as an issue or question-under-discussion. A logic, update semantics with questions (USQ), is presented that combines update semantics with a part...

This paper presents preliminary findings based on the analyses of user-provided information features found in 566 queries seeking help in the identification of particular music works or artists. Queries were drawn from the answers.google.com (Google Answers) website. The types and frequency of occurrences of different information features are compared with the results from previous studies of m...

Community-based question answering (cQA) services have accumulated millions of questions and their answers over time. In the process of accumulation, cQA services assume that questions always have unique best answers. However, with an indepth analysis of questions and answers on cQA services, we find that the assumption cannot be true. According to the analysis, at least 78% of the cQA best ans...