Patent ID: 9471548
Filing Date: 2016-10-18
CPC Classification: G06F

Claim Text:
1. A method of processing by computer a set of a plurality of sentences including a plurality of words, the method comprising the steps of: hierarchically identifying occurrences of at least some of the words in the set of sentences; creating a first index for each of at least some of the words based on an upper hierarchy of occurrences identified for each word; receiving input of a queried word; hierarchically identifying occurrences of the queried word in the set of sentences; creating a second index based on an upper hierarchy of occurrences identified for the queried word; comparing the first index and the second index to calculate an estimated value for the number of occurrences of a word in a neighborhood of the queried word; and calculating the actual value of the number of occurrences of a word in the neighborhood of the queried word based on an upper hierarchy and lower hierarchy of the occurrences on condition that the estimated value is equal to or greater than a predetermined number, wherein the first index and the second index have an upper hierarchy bit set compressed by 1/N where N is a natural number, and a compressed bit is true on condition that one or more uncompressed bits is true.