Fix Classify().
Fix Classify().

palashahuja/mlpack,ajjl/mlpack,darcyliu/mlpack,ranjan1990/mlpack,darcyliu/mlpack,ajjl/mlpack,ranjan1990/mlpack,stereomatchingkiss/mlpack,theranger/mlpack,stereomatchingkiss/mlpack,theranger/mlpack,palashahuja/mlpack,theranger/mlpack,stereomatchingkiss/mlpack,darcyliu/mlpack,ranjan1990/mlpack,palashahuja/mlpack,ajjl/mlpack