Patent ID: 8166051

Claim:
A computer-implemented method comprising: generating, with a processor of a hardware computing system, a set of dominance metrics for a first corpus A having n documents, wherein the set of dominance metrics includes for each term i in a collection C a respective dominance metric D A (i) which is based on a quotient of: an exponentiation of two by an entropy value for the respective term i; and the number n of documents in the first corpus A; wherein the entropy value for the respective term i is based on a respective sum of product values for each document j of first corpus A, wherein each of the product values is based on a respective product of: a respective value p ij ; and a logarithm of the respective value p ij ; wherein the respective value p ij is based on a quotient of: a number of times term i occurs in document j; and a total number of times term i occurs in first corpus A; and storing information characterizing the first corpus A to a data storage unit communicatively coupled to the processor, the information based on the generated set of dominance metrics.