This paper deals with the computer's production and recognition of sentences in a connected discourse and its application to computer assisted instruction. Studies of textual properties in real discourses have been carried out at the paragraph level. The theoretical concepts of representing paragraph content in terms of (1) the factual data…

In a written discourse consisting of a string of "psychological paragraphs," there is in each such psychological paraqraph a "head" structure containing the topic which derives from the deep structure of the discourse. That "head" assertion differs from all other assertions in the psychological paragraph in that it carries new information. The…