Recommended value: 5

Initial value: 5

Strategy: Start with the default value of 5. If you see undesirable cluster splintering - several clusters that seem to map to the same semantic areas - then this value should be decreased. On the other hand, if the cluster set is missing some semantic areas, this value should be increased. Note that it is acceptable to have several overlapping clusters remaining after tuning this value, because they are removed in the next step.