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In this paper the problem is discussed about the text structure determination and content analysis by lexical parallelism, or the repetition of lexical items. Intersentential relations are determined through the identical, partly identical or lexico-semantic repetition in Japanese scientific texts. Lexical parallelism ratio and lexical parallelism indicator distance are obtained on computer and by hand. And the application of the characteristics to automatic content analysis is dicsussed.
Sakamoto et al. (1982) studied this question.