Statistics – Methodology
Scientific paper
2011-03-28
Statistics
Methodology
25 pages, 6 figures
Scientific paper
We herein introduce a new method of interpretable clustering that uses unsupervised binary trees. It is a three-stage procedure, the first stage of which entails a series of recursive binary splits to reduce the heterogeneity of the data within the new subsamples. During the second stage (pruning), consideration is given to whether adjacent nodes can be aggregated. Finally, during the third stage (joining), similar clusters are joined together, even if they do not descend from the same node originally. Consistency results are obtained, and the procedure is used on simulated and real data sets.
Fraiman Ricardo
Ghattas Badih
Svarc Marcela
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