public void printFullFeatureMatrix ( PrintWriter pw ) { String sep = "\t" ; for ( int i = 0 ; i < featureIndex . size ( ) ; i ++ ) { pw . print ( sep + featureIndex . get ( i ) ) ; } pw . println ( ) ; for ( int i = 0 ; i < labels . length ; i ++ ) { pw . print ( labelIndex . get ( i ) ) ; Set < Integer > feats = new HashSet < Integer > ( ) ; for ( int j = 0 ; j < data [ i ] . length ; j ++ ) { int feature = data [ i ] [ j ] ; feats . add ( Integer . valueOf ( feature ) ) ; } for ( int j = 0 ; j < featureIndex . size ( ) ; j ++ ) { if ( feats . contains ( Integer . valueOf ( j ) ) ) { pw . print ( sep + ' ' ) ; } else { pw . print ( sep + ' ' ) ; } } } }
prints the full feature matrix in tab - delimited form . These can be BIG matrices so be careful!