Research Article
Clustering by Fuzzy Neural Gas and Evaluation of Fuzzy Clusters
Table 1
ConnIndex and -values for clusterings of different datasets obtained by crisp and fuzzy vector quantizers. Due to the low number of clusters of the Smiley dataset the -values can be calculated. There is almost no difference between the crisp methods but a substantial discrepancy between the fuzzy vector quantizer. FNG performs way better than FCM. This observation is supported by evaluating the ConnIndex. To evaluate the cluster solutions of the other two datasets only the ConnIndex was used: for crisp methods the generalized ConnIndex and for fuzzy methods the Fuzzy ConnIndex .
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