| 摘要 |
System for calculating a self-confidence value in selection of a cluster including: evaluation unit selecting a neighbor element set as a target cluster for evaluation, the neighbor element set being a set of a reference number of elements each having a higher correlation with a reference element; a neighbor unit selecting a neighbor element set for each of member elements included in the cluster, the neighbor element set being a set of reference number of elements having a higher correlation with the relevant member element; and a confidence unit which calculating, for a combination of two member elements available from the cluster, the number of elements included both in the neighbor element set for one member element of the combination and in the neighbor element set for the other member element, and outputting an average of ratios calculated for all the combinations of member elements, as the self-confidence value.
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