Research Of Question Answering System Based On Mobile Technology

With the extensive application of Information technology in teaching process, a kind of Question and Answer System which is on the basis of mobile technology changes methods of traditional learning and teaching. This is to proceed from reality of learns through using of mobile Question and Answer method which is independent,exploring versatile and flexible. Learns can make decisions about learning content and resources by their own, which is a breakthrough of uniform teaching mode in school. It is a fresh learning proposition of individuality. But it must be pointed out that, a bridge is need in the learning process between teaching and learning,asking and answering, because learns and teachers can not communicate face to face in distance teaching with intelligent mobile equipment. The bridge is a mobile Question and Answer System, through the simple and rapid method, the process of asking and answering can be accomplished which will improve the efficiency of studying. But such learning system is still in the stage of researching and testing, many functions are not well. The main problem of design is ignoring query semantic and the answer to the validity with less effective. To address these problems with Question and Answer System, the author designs a Question and Answer System relies on junior high school history, which is based on the mobile learning platform. The system makes clustering classification effectively according to characteristics of learner's own learning process,difficulties that arise during learning and the potential problems with knowledge points. It provides a convenience during extraction of answer with the system, and also improves the matching algorithm of Chinese sentence similarity. With the questions, algorithms of pattern matching and modeless matching are both used to improve the accuracy of question matching. There is a great promotion of both precision and recall of answers within these improvements. At the end of the paper, there is a probe of the structure designed of mobile Question and Answer System, which is started a discussion for future researchers.