: Fuzzy C means algorithms in MAdlib
От | Akansha Singh |
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Тема | : Fuzzy C means algorithms in MAdlib |
Дата | |
Msg-id | b570939e-62dc-4cf7-9529-dba205417c8c@default обсуждение исходный текст |
Ответы |
Re: : Fuzzy C means algorithms in MAdlib
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Список | pgsql-students |
HI I would like to know can this algorithm be implemented on MAdlIB In the K-means algorithm, each vector is classified as belonging to a single cluster (hard clustering), and the centroidsare updated based on the classified samples. In a variation of this approach known as fuzzy c-means, all vectorshave a degree of membership for each cluster, and the respective centroids are calculated based on these membershipdegrees. Whereas the K-means algorithm computes the average of the vectors in a cluster as the center, fuzzy c-means finds the centeras a weighted average of all points, using the membership probabilities for each point as weights. Vectors with a highprobability of belonging to the class have larger weights, and more influence on the centroid. Regards Akansha Singh -- Sent via pgsql-students mailing list (pgsql-students@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-students
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