Digital computing apparatus for preparing document text

摘要

A digital computing apparatus for preparing document text includes a sentence significance decision section for calculating a significance value of each sentence of document data according to a relation between each sentence and other sentences of the document data. The apparatus can also include a topic extraction section for extracting a topic for each sentence of the document data. A format structure extraction section extracts format structure from document data according to predetermined rules. The format structure, corresponding sentence significance values and topics are sent to an output section. The output section displays this information to the user. The sentence retrieval section retrieves sentences including a user inputted reference word from document data. Then the sentence retrieval section selects a sentence which is related to the reference word from retrieved sentences according to the sentence significance value or the topic. The output section displays only the selected sentence to user.