clustComp is a package that implements several techniques for the comparison and visualisation of relationships between different clustering results, either flat versus flat or hierarchical versus flat. These relationships among clusters are displayed using a weighted bigraph, in which the nodes represent the clusters and the edges connect pairs of nodes with nonempty intersection; the weight of each edge is the number of elements in that intersection and is displayed through the edge thickness. The best layout of the bigraph is provided by the barycentre algorithm, which minimises the weighted number of crossings. In the case of comparing a hierarchical and a nonhierarchical clustering, the dendrogram is pruned at different heights, selected by exploring the tree by depthfirst search, starting at the root. Branches are decided to be split according to the value of a scoring function, that can be based either on the aesthetics of the bigraph or on the mutual information between the hierarchical and the flat clusterings. A mapping between groups of clusters from each side is constructed with a greedy algorithm, and can be additionally visualised.
Package details 


Author  Aurora Torrente and Alvis Brazma. 
Bioconductor views  Clustering GeneExpression Visualization 
Maintainer  Aurora Torrente <[email protected]> 
License  GPL (>= 2) 
Version  1.6.0 
Package repository  View on Bioconductor 
Installation 
Install the latest version of this package by entering the following in R:

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