Hi all, i have run that org.apache.mahout.clustering.syntheticcontrol.<>.Job successfully.. when i run with similar dataset(double values separated by ' ' (space)).. i got the error org.apache.mahout.math.CardinalityException: Required cardinality 16 but got 91 How this Cardinality is calculated and how it is passed to kmeans driver.. how to calculate the cardinality for any dataset ? please help ./rahul