Method and apparatus for analyzing question based on knowledge base

Abstract

Embodiments of the invention provide a method for analyzing a question based on a knowledge base. The method comprises following steps: receiving a question input by a user; detecting phrases of the question and determining candidate phases; mapping the candidate phases in a resource item in the knowledge base; further determining the values of observation predicates and the possible question analysis space; performing uncertainty reasoning and calculating the confidence coefficient of each proposition set in the possible question analysis space according to the values of the observation predicates and values of implicit predicates; acquiring a set of true propositions in the proposition sets whose confidence coefficients meet preset conditions; and generating a formalized query statement according to the set of the true propositions. According to the embodiments, by means of the observation predicate and the implicit predicate, the uncertainty reasoning is performed, and a natural language question can be converted into a formalized query statement. Furthermore, the uncertainty reasoning method can be applied to the knowledge base of any field, the method can be widely applied to multiple fields, and conversion rules are not required to be manually configured for the knowledge bases.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and more specifically, relate to a method and device for analyzing questions in a knowledge base. Background technique [0002] Knowledge base (KnowledgeBase, KB) is a structured, easy-to-operate, easy-to-use, comprehensively organized knowledge cluster in knowledge engineering. A collection of interconnected pieces of knowledge stored, organized, managed, and used in computer memory. [0003] At present, a large number of knowledge resources and knowledge communities have emerged on the Internet, such as Wikipedia, Baidu Encyclopedia, and Hudong Baike. From these knowledge resources, existing research has excavated a large-scale knowledge base centered on entities and entity relationships. In addition, there are some domain knowledge bases, such as weather knowledge base, catering knowledge base, etc. [0004] The construction of the knowledge base has gone through the process ...

AI Technical Summary

Problems solved by technology

However, in the current question answering system, the conversion rules are manually con

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