Method for question answer pair extraction based on domain knowledge

Question answer system aims to give users precise answer to the question presented in natural language.This paper chooses the information service of tourism domain as the application background,and proposes a method for extracting question answer pairs based on domain knowledge.Firstly,by investigating the frequently-asked question,it constructs domain knowledge.Secondly,it designs user question pattern matching algorithm and answer extraction algorithm.To can not match the question,constructs sentence similarity computing to answer questions automatically.The experiment results indicate that this method is feasible to implement answer questions automatically in tourism domain.