question: @ Override public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( 8 ) ; newVector . addElement ( new Option ( "\tSet minimum number of instances per leaf " + "(default 2)." , "M" , 1 , "-M <minimum number of instances>" ) ) ; newVector . addElement ( new Option ( "\tSet minimum numeric class variance proportion\n" + "\tof train variance for split (default 1e-3)." , "V" , 1 , "-V <minimum variance for split>" ) ) ; newVector . addElement ( new Option ( "\tNumber of folds for reduced error pruning " + "(default 3)." , "N" , 1 , "-N <number of folds>" ) ) ; newVector . addElement ( new Option ( "\tSeed for random data shuffling (default 1)." , "S" , 1 , "-S <seed>" ) ) ; newVector . addElement ( new Option ( "\tNo pruning." , "P" , 0 , "-P" ) ) ; newVector . addElement ( new Option ( "\tMaximum tree depth (default -1, no maximum)" , "L" , 1 , "-L" ) ) ; newVector . addElement ( new Option ( "\tInitial class value count (default 0)" , "I" , 1 , "-I" ) ) ; newVector . addElement ( new Option ( "\tSpread initial count over all class values (i.e." + " don't use 1 per value)" , "R" , 0 , "-R" ) ) ; newVector . addAll ( Collections . list ( super . listOptions ( ) ) ) ; return newVector . elements ( ) ; }
target:  Lists the command-line options for this classifier.