284 Chapter 7 Clustering
Similarity Measurement4. : Similarity or dissimilarity between a pair of data
items or among many items must be calculated. This will usually be the
basis for a similarity matrix. Sometimes more than one attribute can be
considered and analyzed. This is called multivariate analysis.
Clustering Entities5. : Based on the similarity or dissimilarity measurement,
a pair of items can be compared and classified into the same group or
different groups. This process is applied to all items in one data record
until the items can be classified into two clusters. Recursively following
this step will result in a classification with various clusters. This step is a
critical part of clustering. Grouping data items into the same ...