overlapmap produces an interactive overlap map
The function overlapmap plots the ordered pairwise overlap values between components. These components are ordered according to a specific rule: first the closest pair is plotted in the lowest left corner, then the components closer to the ones already included are plotted (when all of them have a zero overlap value with the ones already included, the closest pair between all the remaining ones is inserted). The overlap map can either shows with different colors the closeness between components (i.e. in a descriptive manner), or it becomes an interactive plot with a left click on the color bar, which find and visualize the closest components according to a specific threshold value (i.e. omegaStar), which specifies the minimum paiwise overlap threshold value used to merge the components. The interactive process ends with a right click on the white grid in the upper left corner of the plot, it also updates the results creating in the workspace a new variable 'userOverlap'. See the More About section for further informations.
Example using M5data with tclust and tkmeans, specifying an
initial threshold omegaStar, a colormap, and allowing for additional
interactive plots.out
=overlapmap(D
,
Name, Value
)
Melnykov, V., Michael, S. (2020), Clustering Large Datasets by Merging K-Means Solutions, Journal of Classification, Vol. 37, pp. 97–123, https://doi.org/10.1007/s00357-019-09314-8
Melnykov, V. (2016), Merging Mixture Components for Clustering Through Pairwise Overlap, "Journal of Computational and Graphical Statistics", Vol. 25, pp. 66-90.
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overlap |
pcaFS |
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Functions |
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• The developers of the toolbox • The forward search group • Terms of Use • Acknowledgments