DLUT Question Answering System at NTCIR-8 CCLQA

This paper describes the Chinese question answering system DLUT for the CS-CS Subtask evaluation of NTCIR-8 CCLQA. The system utilizes Situation Unit (SU), combined syntactic and semantic information, as a basic processed unit to get candidate answers, wherein the SUs in the question sentences are matched with those in the texts of corpus. In this evaluation, answers are presented in the form of whole sentences instead of their simplified versions. The average F3 Score reaches 0.1954, and the average Recall is 0.75 for the six question types, BIOGRAPHY, DATE, DEFINITION, LOCATION, ORGNIZATION and PERSON. As the current system only employs the partial information in SUs, the evaluation result only indicates that the SU-based question answering system can get promising Recall.