040000 tree 4405724b89efa4ba12d5fa6e5170d28e5bd375a2	array_ops
040000 tree f8b7289ed43f8d6eaeefd806976c8df18de80bb5	decision_tree
040000 tree 28404a67ab50dcd5d13fb19be0ff54604858638a	kernel_machines
040000 tree ad9090915b707e2d8dc5ba8adc5d30ecbb4ce352	kmeans
040000 tree c236fd26fb725227aef621399d375106bd9f1baf	plda
040000 tree 697385ee9046d2cb92f8fb5dc42e639a130db3bb	sketch
040000 tree 3652d9c33f06a12c1c06584a8be058983d2bc3c8	svec