Patent Document ID: 20140112549
Application ID: 14124100
Patent Status: 0

Claim One:
1. A pattern extracting apparatus extracting, from a plurality of items included in target information pieces, a pattern of a combination of two or more of the items different from each other, comprising: a first storing section storing the plurality of target information pieces; a candidate pattern producing section producing candidate patterns each formed of two or more of the items different from each other based on each of the items included in each of the plurality of target information pieces; a candidate evaluation value calculating section calculating an extraction evaluation value of the candidate pattern based on a frequency of appearance at which the produced candidate pattern appears in each of the plurality of target information pieces; and a pattern extracting section determining any of the candidate patterns having the calculated extraction evaluation value satisfying a predetermined threshold value and extracting the candidate pattern satisfying the threshold value, further comprising: a second storing section storing an association degree between the items, wherein the candidate evaluation value calculating section identifies the association degree between the items included in the candidate pattern and calculates the extraction evaluation value based on a weight based on the identified association degree and the frequency of appearance.