Correlation of FM_index for some k

Source: R/cor.dendlist.R

Calculates the FM_index Correlation for some k.

cor_FM_index(dend1, dend2, k, ...)

Arguments

dend1

a dendrogram.
dend2

a dendrogram.
k

an integer (number of clusters to cut the tree)
...

not used.

Value

A correlation value between 0 to 1 (almost identical clusters for some k)

See also

FM_index, cor.dendlist, Bk

Examples


set.seed(23235)
ss <- sample(1:150, 10)
hc1 <- iris[ss, -5] %>%
  dist() %>%
  hclust("com")
hc2 <- iris[ss, -5] %>%
  dist() %>%
  hclust("single")
dend1 <- as.dendrogram(hc1)
dend2 <- as.dendrogram(hc2)

cor_FM_index(dend1, dend2, k = 2)

#> [1] 1
#> attr(,"E_FM")
#> [1] 0.5333333
#> attr(,"V_FM")
#> [1] 0.005833333
cor_FM_index(dend1, dend2, k = 3)

#> [1] 0.6804138
#> attr(,"E_FM")
#> [1] 0.3265986
#> attr(,"V_FM")
#> [1] 0.008214286
cor_FM_index(dend1, dend2, k = 4)

#> [1] 0.6139406
#> attr(,"E_FM")
#> [1] 0.2533723
#> attr(,"V_FM")
#> [1] 0.01214557