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Revision as of 13:19, 16 March 2008
The LGB algorithm is another clustering technique. It has a slightly different approach compared to [K-means]. In this algorithm the user inputs the number of clusters he wants to split his data set into. It has to be a power of 2.
The algo works as follows:
1) Find the sample mean of the data. Let that me some mu.
2) To this mean add and subtract a small value epsilon. Thus we will have 2 new means mu +epsilon and mu-epsilon.For every data point in the set find which mean it belongs to. Now we have thus clustered the data into 2 parts.
3) For each of this part evaluate the new means. Now again split each of the means into 2 more.
4) Continue till we get the desired number of clusters.
This algorithm will ensure that we have the desired number of clusters.
The algorithm is named after Linde,Buzo and Gray.
