Similarity of kernels as dendrogram and heat map. Colors below the dendrogram indicate the parsing information used by a kernel. Similarity of kernel outputs ranges from full agreement (red) to 33% disagreement (yellow) on the five benchmark corpora. Clustering is performed with R’s hclust (http://stat.ethz.ch/R-manual/R-devel/library/stats/html/hclust.html webcite).
Tikk et al. BMC Bioinformatics 2013 14:12 doi:10.1186/1471-2105-14-12