question: public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( 4 ) ; newVector . addElement ( new Option ( "\tMinimize expected misclassification cost. Default is to\n" + "\treweight training instances according to costs per class" , "M" , 0 , "-M" ) ) ; newVector . addElement ( new Option ( "\tFile name of a cost matrix to use. If this is not supplied,\n" + "\ta cost matrix will be loaded on demand. The name of the\n" + "\ton-demand file is the relation name of the training data\n" + "\tplus \".cost\", and the path to the on-demand file is\n" + "\tspecified with the -N option." , "C" , 1 , "-C <cost file name>" ) ) ; newVector . addElement ( new Option ( "\tName of a directory to search for cost files when loading\n" + "\tcosts on demand (default current directory)." , "N" , 1 , "-N <directory>" ) ) ; newVector . addElement ( new Option ( "\tThe cost matrix in Matlab single line format." , "cost-matrix" , 1 , "-cost-matrix <matrix>" ) ) ; newVector . addAll ( Collections . list ( super . listOptions ( ) ) ) ; return newVector . elements ( ) ; }
target:  Returns an enumeration describing the available options.