Automatic abstracting and indexing—survey and recommendations
Communications of the ACM
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A simple content-analysis program incorporated in a word-processing system can display the most significant sentence of a page of text and give a short list of the more important words. This could help authors write titles, summaries, and descriptor lists. The content-analysis program relies on word frequency, precedence, and co-occurrence as indicators of content significance. Test show it performs at least as well as some trained indexers.