1

Ideal cluster

The ideal result of interaction clustering is many small clusters of 1 to 16 cells. Expect 2-10 cells in a cluster to contain Cs or Us. Be suspicious, however, if many clusters contain only one cell. This may indicate that the Information Architecture is insufficiently detailed.

2

Too large a cluster

A cluster with more than 16 cells is generally too large. It may be caused by one or more dense activities, entity types, or both, that is, rows, columns, or both with many Creates and Updates.

3

Many rows but few columns

A very tall and narrow cluster often indicates that the rows are at too low a level of detail compared with the columns.

4

Many columns but few rows

A very short and fat cluster often indicates that the columns are at too low a level of detail compared with the rows.

5

Dense columns or rows

These indicate activities or entity types that have previously been identified (automatically or manually) as dense, and excluded from subsequent clustering iterations. Each column or row should be treated as a separate item. Either it should be a cluster in its own right, or it has been removed from clustering for investigation of activity or entity type definition, and clarification or redefinition of each interaction.

6

Unclustered columns or rows

Activities or entity types cannot be included in a cluster because either they have no C or U interactions, or their only C and U interactions are in dense columns or rows.