@Test
public void testCollisionOfDRFParamsChecksum() {
Frame fr = null;
try {
fr = parse_test_file("smalldata/junit/cars.csv");
fr.remove("name").remove();
Vec old = fr.remove("economy (mpg)");
fr.add("economy (mpg)", old); // response to last column
DKV.put(fr);
// {"_model_id":null,"_train":{"name":"_83da9e0754c5eb9f6b812fe17e7945e5","type":"Key"},"_valid":null,"_nfolds":0,"_keep_cross_validation_predictions":false,"_fold_assignment":"AUTO","_distribution":"AUTO","_tweedie_power":1.5,"_ignored_columns":null,"_ignore_const_cols":true,"_weights_column":null,"_offset_column":null,"_fold_column":null,"_score_each_iteration":false,"_response_column":"economy (mpg)","_balance_classes":false,"_max_after_balance_size":5.0,"_class_sampling_factors":null,"_max_hit_ratio_k":10,"_max_confusion_matrix_size":20,"_checkpoint":null,"_ntrees":9,"_max_depth":15,"_min_rows":1.0,"_nbins":20,"_nbins_cats":1024,"_r2_stopping":0.999999,"_seed":-4522296119273841674,"_nbins_top_level":1024,"_build_tree_one_node":false,"_initial_score_interval":4000,"_score_interval":4000,"_mtries":3,"_sample_rate":0.6499997,"_binomial_double_trees":false}
DRFModel.DRFParameters params1 = new DRFModel.DRFParameters();
params1._train = fr._key;
params1._response_column = "economy (mpg)";
params1._seed = -4522296119273841674L;
params1._mtries = 3;
params1._max_depth = 15;
params1._ntrees = 9;
params1._sample_rate = 0.6499997f;
// {"_model_id":null,"_train":{"name":"_83da9e0754c5eb9f6b812fe17e7945e5","type":"Key"},"_valid":null,"_nfolds":0,"_keep_cross_validation_predictions":false,"_fold_assignment":"AUTO","_distribution":"AUTO","_tweedie_power":1.5,"_ignored_columns":null,"_ignore_const_cols":true,"_weights_column":null,"_offset_column":null,"_fold_column":null,"_score_each_iteration":false,"_response_column":"economy (mpg)","_balance_classes":false,"_max_after_balance_size":5.0,"_class_sampling_factors":null,"_max_hit_ratio_k":10,"_max_confusion_matrix_size":20,"_checkpoint":null,"_ntrees":13,"_max_depth":1,"_min_rows":1.0,"_nbins":20,"_nbins_cats":1024,"_r2_stopping":0.999999,"_seed":-4522296119273841674,"_nbins_top_level":1024,"_build_tree_one_node":false,"_initial_score_interval":4000,"_score_interval":4000,"_mtries":1,"_sample_rate":0.6499997,"_binomial_double_trees":false}
DRFModel.DRFParameters params2 = new DRFModel.DRFParameters();
params2._train = fr._key;
params2._response_column = "economy (mpg)";
params2._seed = -4522296119273841674L;
params2._mtries = 1;
params2._max_depth = 1;
params2._ntrees = 13;
params2._sample_rate = 0.6499997f;
long csum1 = params1.checksum();
long csum2 = params2.checksum();
Assert.assertNotEquals("Checksums shoudl be different", csum1, csum2);
} finally {
if (fr != null) {
fr.remove();
}
}
}
