关键词: 概念层次网络, 语境框架, 信息检索

Abstract:

An intelligent agriculture information retrieval system based on hierarchical network of concepts (HNC) is designed and developed. In the system, a model of semantic-based text formalization, the context framework model (CFM) is presented, which is three-coordinate and describes the text as domain, situation and background. Based on the context framework, an information retrieval algorithm is developed. The algorithm has a kernel of domain knowledge, a base of situation framework and a limitation of background. The good effect during the run of the system for one year proved the feasibility of the technology.

Key words: hierarchical network of concepts, context framework, information retrieval