Library and Information Science

This paper reviewed recent studies on some aspects of the content structure of the information media. The content of information media is not just a random grouping of words, but rather carefully constructed set of concepts put together by an author to express the author's idea. Therefore as a essential nature of the information media, its content involves structure. After types of structures and terms are defined, relations between structures and subject analysis, subject representations with relationship among concepts, structural analysis of abstracts and research papers, and information needs from structural point of view are discussed. Needs for validated analysis of structures and cumulation of studies are emphasized.