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METHOD FOR CALCULATING CLUSTERING EVALUATION VALUE, AND METHOD FOR DETERMINING NUMBER OF CLUSTERS
METHOD FOR CALCULATING CLUSTERING EVALUATION VALUE, AND METHOD FOR DETERMINING NUMBER OF CLUSTERS
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机译:聚类评估值的计算方法和聚类数的确定方法
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摘要
Provided is a method for calculating an evaluation score of clustering quality, based on the number of clusters into which a plurality of data is clustered. The calculating the evaluation score includes: calculating a degree of internal compactness that is a sum of values, each being defined by normalizing a first index value by a first value that is based on a number of data within each cluster, the first index value indicating a degree of dispersion of data within each cluster; calculating a degree of external separation defined by normalizing a sum of a second index value for each cluster by a second value that is based on the number of clusters, the second index value indicating an index of a distance between the clusters; and calculating the evaluation score according to a predetermined formula having, as variables, the degree of internal compactness and the degree of external separation.
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