Patent ID: 8515972

Claim:
A computer-implemented method comprising: automatically extracting a plurality of groups of words from a set comprising a first document; wherein in the plurality of groups, each group comprises a word; automatically determining a plurality of first counts of a number of times said each group of words in said plurality matches said set; automatically determining a plurality of second counts of the number of times said each group of words in said plurality matches a corpus of second documents; automatically performing function fitting on at least first counts of said plurality of groups of words and corresponding second counts of said plurality of groups of words, to obtain a fitted function; using at least one processor in automatically comparing a first count of said each group of words in the plurality of first counts to an evaluation of said fitted function at a second count of said each group of words in the plurality of second counts, to obtain a weight of said each group of words; and automatically storing at least said weight in a computer memory coupled to said at least one processor.