基于倒排索引的问答系统的设计与实现

Design and Implementation of Question Answering System Based on Inverted Index

近年来,随着人工智能的飞速发展,自动问答已经成为倍受关注且发展前景广泛的研究方向。为了方便学生们检索有关课程的相关知识,进一步深入学习,本文设计并实现了一个基于倒排索引技术的课程问答系统。通过建立问答系统的数据库,对问题进行分析以及问题关键词的处理、信息检索进行答案抽取。通过中文分词系统实现提取问答对中的关键词。通过余弦相似度计算文本相似度与问答对中的问题进行比对及匹配,从而显示正确答案通过网页反馈给学生。这样可以帮助学生更有效地学习课程,为学生对该课程的学习提供了便利。

In recent years,with the rapid development of artificial intelligence,automatic question answering has become a widely concerned research direction.In order to facilitate the students to retrieve relevant knowledge of the relevant courses and further study,this paper designs and implements a question and answer system based on inverted index technology.Through building up the database of question answering system,we can analyze the problems,deal with the key words and retrieve the answers.The key word in Chinese question answering is extracted through Chinese word segmentation system.Cosine similarity is used to calculate the similarity between texts and the questions in question answering pairs,so that the correct answers can be displayed to students through web pages.It can help students learn more effectively,and provide convenience for students to learn this course.