Illustration of hierarchical clustering-based categorization of samples as
“similar” to, “maybe similar” to, and
“different” from the GBE reference (sample 1). According to rule
1, sample A is considered to be “similar” to sample 1 because
they are in the “most similar” cluster. According to rule 2,
samples C, D, and E are “different” from sample 1 because they
are in the “most different” clusters. According to rule 3,
sample B is “maybe similar” to sample 1 because it does not
belong to either of the two categories described above.