Method that applicate differents internal metrics about a data frame or matrix, for example dunn, connectivity etc
internal_validation(
distance = NULL,
clusters_vector,
dataf = NULL,
method = CONST_EUCLIDEAN,
metric = NULL
)
dissimilarity matrix
array that containe tha data grouped in cluster
dataframe with original data
indicates the method for calculating distance between points
array with external metric types
returns a list of the internal results initialized to zero