Patent ID: 11914448
Assignee: TOHOKU UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 12:
13. The clustering method according to claim 11, wherein calculating the evaluation score or each of the evaluation scores comprises:
calculating a degree of internal compactness that is a first sum of values, each being defined by normalizing a first index value by a first value that is based on a number of element data within each cluster, the first index value indicating a degree of dispersion of element data within each cluster;
calculating a degree of external separation defined by normalizing a second sum of second index values for each cluster by a second value that is based on the number of clusters, each of the second index values indicating an index of a distance between the clusters; and
calculating the evaluation score or each of the evaluation scores according to a predetermined formula defined by the degree of internal compactness and the degree of external separation which are variables.