def test_save_load_simple_estimator(self):
# This tests saving and loading the trained model only.
# Save/load for TrainValidationSplit will be added later: SPARK-13786
temp_path = tempfile.mkdtemp()
dataset = self.spark.createDataFrame(
[(Vectors.dense([0.0]), 0.0),
(Vectors.dense([0.4]), 1.0),
(Vectors.dense([0.5]), 0.0),
(Vectors.dense([0.6]), 1.0),
(Vectors.dense([1.0]), 1.0)] * 10,
["features", "label"])
lr = LogisticRegression()
grid = ParamGridBuilder().addGrid(lr.maxIter, [0, 1]).build()
evaluator = BinaryClassificationEvaluator()
tvs = TrainValidationSplit(estimator=lr, estimatorParamMaps=grid, evaluator=evaluator)
tvsModel = tvs.fit(dataset)
tvsPath = temp_path + "/tvs"
tvs.save(tvsPath)
loadedTvs = TrainValidationSplit.load(tvsPath)
self.assertEqual(loadedTvs.getEstimator().uid, tvs.getEstimator().uid)
self.assertEqual(loadedTvs.getEvaluator().uid, tvs.getEvaluator().uid)
self.assert_param_maps_equal(
loadedTvs.getEstimatorParamMaps(), tvs.getEstimatorParamMaps())
tvsModelPath = temp_path + "/tvsModel"
tvsModel.save(tvsModelPath)
loadedModel = TrainValidationSplitModel.load(tvsModelPath)
self.assertEqual(loadedModel.bestModel.uid, tvsModel.bestModel.uid)
def test_save_load_simple_estimator(self):
# This tests saving and loading the trained model only.
# Save/load for TrainValidationSplit will be added later: SPARK-13786
temp_path = tempfile.mkdtemp()
dataset = self.spark.createDataFrame(
[(Vectors.dense([0.0]), 0.0),
(Vectors.dense([0.4]), 1.0),
(Vectors.dense([0.5]), 0.0),
(Vectors.dense([0.6]), 1.0),
(Vectors.dense([1.0]), 1.0)] * 10,
["features", "label"])
lr = LogisticRegression()
grid = ParamGridBuilder().addGrid(lr.maxIter, [0, 1]).build()
evaluator = BinaryClassificationEvaluator()
tvs = TrainValidationSplit(estimator=lr, estimatorParamMaps=grid, evaluator=evaluator)
tvsModel = tvs.fit(dataset)
tvsPath = temp_path + "/tvs"
tvs.save(tvsPath)
loadedTvs = TrainValidationSplit.load(tvsPath)
self.assertEqual(loadedTvs.getEstimator().uid, tvs.getEstimator().uid)
self.assertEqual(loadedTvs.getEvaluator().uid, tvs.getEvaluator().uid)
self.assertEqual(loadedTvs.getEstimatorParamMaps(), tvs.getEstimatorParamMaps())
tvsModelPath = temp_path + "/tvsModel"
tvsModel.save(tvsModelPath)
loadedModel = TrainValidationSplitModel.load(tvsModelPath)
self.assertEqual(loadedModel.bestModel.uid, tvsModel.bestModel.uid)
def _run_test_save_load_nested_estimator(self, LogisticRegressionCls):
# This tests saving and loading the trained model only.
# Save/load for TrainValidationSplit will be added later: SPARK-13786
temp_path = tempfile.mkdtemp()
dataset = self.spark.createDataFrame(
[
(Vectors.dense([0.0]), 0.0),
(Vectors.dense([0.4]), 1.0),
(Vectors.dense([0.5]), 0.0),
(Vectors.dense([0.6]), 1.0),
(Vectors.dense([1.0]), 1.0),
] * 10,
["features", "label"],
)
ova = OneVsRest(classifier=LogisticRegressionCls())
lr1 = LogisticRegressionCls().setMaxIter(100)
lr2 = LogisticRegressionCls().setMaxIter(150)
grid = ParamGridBuilder().addGrid(ova.classifier, [lr1, lr2]).build()
evaluator = MulticlassClassificationEvaluator()
tvs = TrainValidationSplit(estimator=ova,
estimatorParamMaps=grid,
evaluator=evaluator)
tvsModel = tvs.fit(dataset)
tvsPath = temp_path + "/tvs"
tvs.save(tvsPath)
loadedTvs = TrainValidationSplit.load(tvsPath)
self.assert_param_maps_equal(loadedTvs.getEstimatorParamMaps(), grid)
self.assertEqual(loadedTvs.getEstimator().uid, tvs.getEstimator().uid)
self.assertEqual(loadedTvs.getEvaluator().uid, tvs.getEvaluator().uid)
originalParamMap = tvs.getEstimatorParamMaps()
loadedParamMap = loadedTvs.getEstimatorParamMaps()
for i, param in enumerate(loadedParamMap):
for p in param:
if p.name == "classifier":
self.assertEqual(param[p].uid, originalParamMap[i][p].uid)
else:
self.assertEqual(param[p], originalParamMap[i][p])
tvsModelPath = temp_path + "/tvsModel"
tvsModel.save(tvsModelPath)
loadedModel = TrainValidationSplitModel.load(tvsModelPath)
self.assert_param_maps_equal(loadedModel.getEstimatorParamMaps(), grid)
self.assertEqual(loadedModel.bestModel.uid, tvsModel.bestModel.uid)
def test_save_load_nested_estimator(self):
# This tests saving and loading the trained model only.
# Save/load for TrainValidationSplit will be added later: SPARK-13786
temp_path = tempfile.mkdtemp()
dataset = self.spark.createDataFrame(
[(Vectors.dense([0.0]), 0.0),
(Vectors.dense([0.4]), 1.0),
(Vectors.dense([0.5]), 0.0),
(Vectors.dense([0.6]), 1.0),
(Vectors.dense([1.0]), 1.0)] * 10,
["features", "label"])
ova = OneVsRest(classifier=LogisticRegression())
lr1 = LogisticRegression().setMaxIter(100)
lr2 = LogisticRegression().setMaxIter(150)
grid = ParamGridBuilder().addGrid(ova.classifier, [lr1, lr2]).build()
evaluator = MulticlassClassificationEvaluator()
tvs = TrainValidationSplit(estimator=ova, estimatorParamMaps=grid, evaluator=evaluator)
tvsModel = tvs.fit(dataset)
tvsPath = temp_path + "/tvs"
tvs.save(tvsPath)
loadedTvs = TrainValidationSplit.load(tvsPath)
self.assertEqual(loadedTvs.getEstimator().uid, tvs.getEstimator().uid)
self.assertEqual(loadedTvs.getEvaluator().uid, tvs.getEvaluator().uid)
originalParamMap = tvs.getEstimatorParamMaps()
loadedParamMap = loadedTvs.getEstimatorParamMaps()
for i, param in enumerate(loadedParamMap):
for p in param:
if p.name == "classifier":
self.assertEqual(param[p].uid, originalParamMap[i][p].uid)
else:
self.assertEqual(param[p], originalParamMap[i][p])
tvsModelPath = temp_path + "/tvsModel"
tvsModel.save(tvsModelPath)
loadedModel = TrainValidationSplitModel.load(tvsModelPath)
self.assertEqual(loadedModel.bestModel.uid, tvsModel.bestModel.uid)
