METHODS AND SYSTEMS FOR EXTRACTING KEYPHRASES FROM NATURAL TEXT FOR SEARCH ENGINE INDEXING

摘要

The present invention is a method and system for the extraction of keyphrases from natural text. For the purpose of this document, keyphrases are text segments that represent the main topic of a text. The method of the present invention may facilitate keyphrase extraction from any length of text. The text may be of several varieties, such as, for example a sentence, paragraph, document or collection of documents. Phrase separator methods may be applied to the text to extract phrases from the text. From these phrases the present invention may identify the one or more phrases that are integral to the meaning of the text and these may be identified as the keyphrases of the text. The text may be indexed using the keyphrases so that a search based upon any of the keyphrases will cause search engines and/or text retrieval means to retrieve the text.