semantic structure of information

基本解释

The topic is the first semantic component in the information structure of a sentence, and is always found in conjunction with the comment.
话题是以句子为单位的陈述性信息体里的第一意义成分，所以话题是必带陈述的指称。
Online courseware is the main physical basis of tele-education, it should well express the structure and semantic characteristics of education information.
网上课件是网上教育的主要物质基础，它能充分表达教学信息应有的结构性、语义性特点。
As a modeling tool which can describe the conceptual structure of information system at semantic and knowledge levels, ontology has very large advantage in knowledge modeling.
本体作为一种能在语义和知识层次上描述信息系统的概念模型的建模工具，它在知识建模上具有非常大的优势。