4.10 Dataset “wdbc” shown on the first three nontrivial eigenvectors.
Anomalous instances in green (37.3% of #instance) are more
scattered and sparse than normal instances in blue (62.7% of
#instance). Therefore these anomalies, although have a large
amount of instances, should be treated as many small abnormal
clusters instead of a single cluster. . . . . . . . . . . . . . . . . . . 98