[R-pkgs] amap new version (multidimensional analysis)

From: Antoine <antoine.lucas_at_laposte.net>
Date: Thu, 10 Nov 2011 18:53:52 +0100


Dear R users,

Thanks to a new contributor, Luigi Cerulo, amap provides 2 more metrics, and another agglomeration linkage for distance computation, and hierarchical clustering.

The new centroid linkage method implemented in the cluster3 software tool (http://bonsai.hgc.jp/~mdehoon/software/cluster/software.htm). In this method the pseudoitem of a cluster is computed as the average of the items coordinates, and clusters are aggregated with the same distance metrics used between items. This approach reveals very effective in the context of gene functional expressions analysis.

This update makes amap even more convenient for gene expression analysis, but not only; amap provides a lot of tools for robust statistics (rank based metrics, robust principal component analysis) with very fast implementations.

Antoine Lucas.



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