Patent Document ID: 8375022
Application ID: 12938288

Base Claim:
1. A computing device for determination of keywords, the computing device comprising: a processor to: determine a total number of occurrences of a particular word in a plurality of documents, determine a document-specific number of occurrences of the particular word in a particular document of the plurality of documents, determine a weight of meaningfulness for the particular word based on a relationship between the document-specific number of occurrences and an expected value of the document-specific number of occurrences determined using the total number of occurrences, wherein weight of meaningfulness for the particular word is determined according to: weight of meaningfulness = K ! m ! ⁢ ( K - m ) ! · 1 N m - 1 , where: K is the total number of occurrences of the particular word, m is the document-specific number of occurrences, and N is a total number of documents, and selectively add the particular word to a set of keywords for the particular document based on the weight of meaningfulness determined for the particular word.

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Claim 6:
6. The computing device of claim 1 , wherein: each of the plurality of documents is a B-word block of a single document, and the processor is configured to: set a total number of documents used to determine the weight of meaningfulness to [L/B], where L is a total number of words in the single document.