Summary Object for Map
Generate a summary object for 'map' objects.
summary(map,verb=TRUE)
map |
An object of type 'map'. |
verb |
A switch controlling the output. |
An object of type 'summary.map' which contains two structures:
A dataframe containing the parameters the map was trained with.
A dataframe containing the quality assessments of the map. In particular, it contains the 'convergence' of the map which is a linear combination of variance capture and topographic fidelity of the map. A value close to 1 means a converged map (for more details see the reference below). Furthermore, it contains the 'separation' of the clusters. This is computed by the formula,
1 - wcss/bcss
In general, a value close to 1 means well separated clusters.
If 'verb' is TRUE the summar.map object will be formatted and printed to the screen, otherwise it will be returned as a data structure.
Lutz Hamel
Self-Organizing Map Convergence, Robert Tatoian and Lutz Hamel. Proceedings of the 2016 International Conference on Data Mining (DMIN'16), pp92-98, July 25-28, 2016, Las Vegas, Nevada, USA, ISBN: 1-60132-431-6, CSREA Press.
data(iris) ## set data frame and labels df <- subset(iris,select=-Species) labels <- subset(iris,select=Species) ## build a map m <- map(df,labels,xdim=15,ydim=10,train=10000) ## compute a summary object and display it s <- summary(m,verb=FALSE) s
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