def test_hdfs_io():
'''
Test H2O read and write to hdfs
'''
hdfs_name_node = os.getenv("NAME_NODE")
print("Importing hdfs data")
h2o_data = h2o.import_file("hdfs://" + hdfs_name_node + "/datasets/airlines/airlines_all.05p.csv")
print("Spliting data")
for c in ["Month","DayofMonth","IsArrDelayed"]:
h2o_data[c] = h2o_data[c].asfactor()
myX = ["Month","DayofMonth","Distance"]
train,test = h2o_data.split_frame(ratios=[0.9])
print("Exporting file to hdfs")
h2o.export_file(test[:,["Year","DayOfWeek"]], "hdfs://" + hdfs_name_node + "/datasets/exported.csv")
print("Reading file back in and comparing if data is the same")
new_test = h2o.import_file("hdfs://" + hdfs_name_node + "/datasets/exported.csv")
assert((test[:,"DayOfWeek"] - new_test[:,"DayOfWeek"]).sum() == 0)
print("Training")
h2o_glm = H2OGeneralizedLinearEstimator(family="binomial", alpha=0.5, Lambda=0.01)
h2o_glm.train(x=myX, y="IsArrDelayed", training_frame=train) # dont need to train on all features
hdfs_model_path = os.getenv("MODEL_PATH")
print("Saving model")
new_model_path = h2o.save_model(h2o_glm, "hdfs://" + hdfs_name_node + "/" + hdfs_model_path)
print("Loading back model")
new_model = h2o.load_model(new_model_path)
print("Running predictions")
preds = new_model.predict(test)
def test_load_glrm():
print("Importing iris_wheader.csv data...")
irisH2O = h2o.upload_file(pyunit_utils.locate("smalldata/iris/iris_wheader.csv"))
irisH2O.describe()
g_model = H2OGeneralizedLowRankEstimator(k=3)
g_model.train(x=irisH2O.names, training_frame=irisH2O)
yarch_old = g_model.archetypes()
x_old = h2o.get_frame(g_model._model_json["output"]["representation_name"])
predOld = g_model.predict(irisH2O)
TMPDIR = os.path.normpath(os.path.join(os.path.dirname(os.path.realpath('__file__')), "../..", "results"))
try:
TMPDIR = pyunit_utils.locate("results") # find directory path to results folder
except:
os.makedirs(TMPDIR)
h2o.save_model(g_model, path=TMPDIR, force=True) # save model
full_path_filename = os.path.join(TMPDIR, g_model._id)
h2o.remove(g_model)
model_reloaded = h2o.load_model(full_path_filename)
pred = model_reloaded.predict(irisH2O)
yarch = model_reloaded.archetypes()
x = h2o.get_frame(model_reloaded._model_json["output"]["representation_name"])
# assert difference between old and new are close, archetypes should be the same
pyunit_utils.compare_frames_local(x, x_old, tol=1e-6)
pyunit_utils.compare_frames_local(pred[0], predOld[0], tol=1)
for k in range(3):
pyunit_utils.equal_two_arrays(yarch_old[k], yarch[k], eps = 1e-4, tolerance=1e-10)
print("glrm model successfully loaded...")
def test_hadoop():
'''
Test H2O read and write to hdfs
'''
hdfs_name_node = os.getenv("NAME_NODE")
print("Importing hdfs data")
h2o_data = h2o.import_file("hdfs://" + hdfs_name_node + "/datasets/100k.csv")
print("Spliting data")
train,test = h2o_data.split_frame(ratios=[0.9])
print("Exporting file to hdfs")
h2o.export_file(test[:,0:2], "hdfs://" + hdfs_name_node + "/datasets/exported.csv")
print("Reading file back in and comparing if data is the same")
new_test = h2o.import_file("hdfs://" + hdfs_name_node + "/datasets/exported.csv")
assert((test[:,1] - new_test[:,1]).sum() == 0)
print("Training")
h2o_glm = H2OGeneralizedLinearEstimator(family="binomial", alpha=0.5, Lambda=0.01)
h2o_glm.train(x=range(1, 10), y=0, training_frame=train) # dont need to train on all features
hdfs_model_path = os.getenv("MODEL_PATH")
print("Saving model")
new_model_path = h2o.save_model(h2o_glm, "hdfs://" + hdfs_name_node + "/" + hdfs_model_path)
print("Loading back model")
new_model = h2o.load_model(new_model_path)
print("Running predictions")
preds = new_model.predict(test)
def milsong_checkpoint(ip,port):
milsong_train = h2o.upload_file(h2o.locate("bigdata/laptop/milsongs/milsongs-train.csv.gz"))
milsong_valid = h2o.upload_file(h2o.locate("bigdata/laptop/milsongs/milsongs-test.csv.gz"))
distribution = "gaussian"
# build first model
ntrees1 = random.sample(range(50,100),1)[0]
max_depth1 = random.sample(range(2,6),1)[0]
min_rows1 = random.sample(range(10,16),1)[0]
print "ntrees model 1: {0}".format(ntrees1)
print "max_depth model 1: {0}".format(max_depth1)
print "min_rows model 1: {0}".format(min_rows1)
model1 = h2o.gbm(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees1,max_depth=max_depth1, min_rows=min_rows1,
distribution=distribution,validation_x=milsong_valid[1:],validation_y=milsong_valid[0])
# save the model, then load the model
model_path = h2o.save_model(model1, name="delete_model", force=True)
restored_model = h2o.load_model(model_path)
shutil.rmtree("delete_model")
# continue building the model
ntrees2 = ntrees1 + 50
max_depth2 = max_depth1
min_rows2 = min_rows1
print "ntrees model 2: {0}".format(ntrees2)
print "max_depth model 2: {0}".format(max_depth2)
print "min_rows model 2: {0}".format(min_rows2)
model2 = h2o.gbm(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees2,max_depth=max_depth2, min_rows=min_rows2,
distribution=distribution,validation_x=milsong_valid[1:],validation_y=milsong_valid[0],
checkpoint=restored_model._id)
# build the equivalent of model 2 in one shot
model3 = h2o.gbm(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees2,max_depth=max_depth2, min_rows=min_rows2,
distribution=distribution,validation_x=milsong_valid[1:],validation_y=milsong_valid[0])
def __init__(self, model_name, model_base_path, verbose=False):
"""
Initialize the service.
Args:
model_name: The name of the model.
model_base_path: The file path of the model.
Return:
None
"""
super(H2oInferenceService, self).__init__()
self.model_name = model_name
self.model_base_path = model_base_path
self.model_version_list = [1]
self.model_graph_signature = ""
self.platform = "H2o"
self.verbose = verbose
import h2o
logging.info("Try to initialize and connect the h2o server")
h2o.init()
logging.info("Try to load the h2o model")
model = h2o.load_model(model_base_path)
self.model = model
# TODO: Update the signature with readable string
self.model_graph_signature = "{}".format(self.model.full_parameters)
def deepwater_checkpoint():
if not H2ODeepWaterEstimator.available(): return
## build a model
#frame = h2o.import_file(pyunit_utils.locate("bigdata/laptop/deepwater/imagenet/cat_dog_mouse.csv"))
frame = h2o.import_file(pyunit_utils.locate("smalldata/prostate/prostate.csv"))
frame.drop(0)
frame[1] = frame[1].asfactor()
print(frame.head(5))
model = H2ODeepWaterEstimator(epochs=50, learning_rate=1e-5, stopping_rounds=0, score_duty_cycle=1, train_samples_per_iteration=-1, score_interval=0)
model.train(y=1, training_frame=frame)
## save the model
model_path = h2o.save_model(model)
## delete everything - simulate cluster shutdown and restart
h2o.remove_all()
## reimport the model and the frame
model = h2o.load_model(model_path)
#frame = h2o.import_file(pyunit_utils.locate("bigdata/laptop/deepwater/imagenet/cat_dog_mouse.csv"))
frame = h2o.import_file(pyunit_utils.locate("smalldata/prostate/prostate.csv"))
frame.drop(0)
frame[1] = frame[1].asfactor()
## delete the checkpoint file
os.remove(model_path)
## continue training
model2 = H2ODeepWaterEstimator(epochs=100, learning_rate=1e-5, stopping_rounds=0,score_duty_cycle=1, train_samples_per_iteration=-1, score_interval=0, checkpoint=model.model_id)
model2.train(y=1, training_frame=frame)
model2.show()
def stackedensemble_binary_test():
# Import a sample binary outcome train/test set into H2O
train = h2o.import_file(pyunit_utils.locate("smalldata/higgs/higgs_train_10k.csv"))
test = h2o.import_file(pyunit_utils.locate("smalldata/testng/higgs_test_5k.csv"))
# Identify predictors and response
x = train.columns
y = "response"
x.remove(y)
# For binary classification, response should be a factor
train[y] = train[y].asfactor()
test[y] = test[y].asfactor()
# Number of CV folds (to generate level-one data for stacking)
nfolds = 5
# 1. Generate a 2-model ensemble (GBM + RF)
# Train and cross-validate a GBM
my_gbm = H2OGradientBoostingEstimator(distribution="bernoulli",
ntrees=10,
max_depth=3,
min_rows=2,
learn_rate=0.2,
nfolds=nfolds,
fold_assignment="Modulo",
keep_cross_validation_predictions=True,
seed=1)
my_gbm.train(x=x, y=y, training_frame=train)
# Train and cross-validate a RF
my_rf = H2ORandomForestEstimator(ntrees=50,
nfolds=nfolds,
fold_assignment="Modulo",
keep_cross_validation_predictions=True,
seed=1)
my_rf.train(x=x, y=y, training_frame=train)
# Train a stacked ensemble using the GBM and DRF above
ensemble = H2OStackedEnsembleEstimator(model_id="my_ensemble_binomial",
base_models=[my_gbm.model_id, my_rf.model_id])
ensemble.train(x=x, y=y, training_frame=train)
#Predict in ensemble in Py client
preds_py = ensemble.predict(test)
#Load binary model and predict
bin_model = h2o.load_model(pyunit_utils.locate("smalldata/binarymodels/stackedensemble/ensemble_higgs"))
preds_bin = bin_model.predict(test)
#Predictions from model in Py and binary model should be the same
pred_diff = preds_bin - preds_py
assert pred_diff["p0"].max() < 1e-11
assert pred_diff["p1"].max() < 1e-11
assert pred_diff["p0"].min() > -1e-11
assert pred_diff["p1"].min() > -1e-11
def milsong_checkpoint():
milsong_train = h2o.upload_file(pyunit_utils.locate("bigdata/laptop/milsongs/milsongs-train.csv.gz"))
milsong_valid = h2o.upload_file(pyunit_utils.locate("bigdata/laptop/milsongs/milsongs-test.csv.gz"))
distribution = "gaussian"
# build first model
ntrees1 = random.sample(range(50,100),1)[0]
max_depth1 = random.sample(range(2,6),1)[0]
min_rows1 = random.sample(range(10,16),1)[0]
print "ntrees model 1: {0}".format(ntrees1)
print "max_depth model 1: {0}".format(max_depth1)
print "min_rows model 1: {0}".format(min_rows1)
model1 = H2OGradientBoostingEstimator(ntrees=ntrees1,
max_depth=max_depth1,
min_rows=min_rows1,
distribution=distribution)
model1.train(x=range(1,milsong_train.ncol),
y=0,
training_frame=milsong_train,
validation_frame=milsong_valid)
# save the model, then load the model
path = pyunit_utils.locate("results")
assert os.path.isdir(path), "Expected save directory {0} to exist, but it does not.".format(path)
model_path = h2o.save_model(model1, path=path, force=True)
assert os.path.isfile(model_path), "Expected load file {0} to exist, but it does not.".format(model_path)
restored_model = h2o.load_model(model_path)
# continue building the model
ntrees2 = ntrees1 + 50
max_depth2 = max_depth1
min_rows2 = min_rows1
print "ntrees model 2: {0}".format(ntrees2)
print "max_depth model 2: {0}".format(max_depth2)
print "min_rows model 2: {0}".format(min_rows2)
model2 = H2OGradientBoostingEstimator(ntrees=ntrees2,
max_depth=max_depth2,
min_rows=min_rows2,
distribution=distribution,
checkpoint=restored_model.model_id)
model2.train(x=range(1,milsong_train.ncol),
y=0,
training_frame=milsong_train,
validation_frame=milsong_valid)
model3 = H2OGradientBoostingEstimator(ntrees=ntrees2,
max_depth=max_depth2,
min_rows=min_rows2,
distribution=distribution)
model3.train(x=range(1,milsong_train.ncol),
y=0,
training_frame=milsong_train,
validation_frame=milsong_valid)
def _load_model(path, init=False):
import h2o
path = os.path.abspath(path)
with open(os.path.join(path, "h2o.yaml")) as f:
params = yaml.safe_load(f.read())
if init:
h2o.init(**(params["init"] if "init" in params else {}))
h2o.no_progress()
return h2o.load_model(os.path.join(path, params['model_file']))
def post(self, request):
try:
# Recebe os dados enviados pela requisição
model_id = request.POST.get('model_id')
csv_prever = request.FILES['csv_prever']
if model_id:
# Busca o modelo usando o ORM do Django pelo model_id
modelo_processado = ModeloMachineLearningProcessado.objects.get(
model_id=model_id)
# Busca o processamento vinculado ao modelo processado usando a ORM do Django
processamento = modelo_processado.processamentos.first()
else:
# se não informou o model_id, busca-se o melhor modelo do processamento mais recente
processamento = ProcessamentoModeloMachineLearning.objects.all(
).first() # o processamento mais recente
modelo_processado = processamento.modelos_processados.all(
).first()
# o primeiro modelo sempre é o melhor
# faz a leitura do arquivo para previsão fazendo uso da biblioteca Pandas
teste = pd.read_csv(csv_prever, sep=";")
colunas_enviadas = ','.join(teste.columns.tolist())
if processamento.variaveis_independentes != colunas_enviadas:
raise Exception(
'Erro no layout do arquivo de previsão: Para este modelo são essenciais as seguintes '
'colunas:"{variaveis_independentes}", mas você enviou as colunas: "{colunas_enviadas}"'
.format(variaveis_independentes=processamento.
variaveis_independentes,
colunas_enviadas=colunas_enviadas))
# Inicializa a conexão com o h2o
h2o.init()
teste = h2o.H2OFrame(teste)
# Fazer o load do binário do modelo
modelo_automl = h2o.load_model(
modelo_processado.binario_modelo.name)
prever = modelo_automl.predict(teste)
data_frame = prever.as_data_frame()
"""
Formatar os dados de uma forma mais simples, para percorrer depois no JavaScript
"""
previsoes = list()
for i in range(0, len(data_frame['predict']) - 1):
previsoes.append({
'predict': data_frame['predict'][i],
'p0': data_frame['p0'][i],
'p1': data_frame['p1'][i]
})
return Response(status=201, data={'previsoes': previsoes})
except Exception as e:
return Response(status=401, data={'Erro': str(e)})
def __init__(self):
print 'Starting Java virtual machine'
h2o.init(nthreads=-1, max_mem_size=8)
print 'Machine started!'
print 'Loading model from %s...' % MODEL_PATH
self.model = h2o.load_model(MODEL_PATH)
print 'Model Loaded'
def run_h2o(train_file_path: str,
test_file_path: str,
task: MachineLearningTasksEnum,
case_name='h2o_default'):
config_data = get_models_hyperparameters()['H2O']
max_models = config_data['MAX_MODELS']
max_runtime_secs = config_data['MAX_RUNTIME_SECS']
result_filename = f'{case_name}_m{max_models}_rs{max_runtime_secs}_{task.name}'
exported_model_path = os.path.join(CURRENT_PATH, result_filename)
# TODO Regression
if result_filename not in os.listdir(CURRENT_PATH):
train_data = InputData.from_csv(train_file_path)
best_model = fit_h2o(train_data)
temp_exported_model_path = h2o.save_model(model=best_model,
path=CURRENT_PATH)
os.renames(temp_exported_model_path, exported_model_path)
ip, port = get_h2o_connect_config()
h2o.init(ip=ip, port=port, name='h2o_server')
imported_model = h2o.load_model(exported_model_path)
test_frame = InputData.from_csv(test_file_path)
true_target = test_frame.target
predictions = predict_h2o(imported_model, test_frame)
if task is MachineLearningTasksEnum.classification:
train_roc_auc_value = round(imported_model.auc(train=True), 3)
valid_roc_auc_value = round(imported_model.auc(valid=True), 3)
test_roc_auc_value = round(roc_auc_score(true_target, predictions), 3)
metrics = {
'H2O_ROC_AUC_train': train_roc_auc_value,
'H2O_ROC_AUC_valid': valid_roc_auc_value,
'H2O_ROC_AUC_test': test_roc_auc_value
}
print(f"H2O_ROC_AUC_train: {metrics['H2O_ROC_AUC_train']}")
print(f"H2O_ROC_AUC_valid: {metrics['H2O_ROC_AUC_valid']}")
print(f"H2O_ROC_AUC_test: {metrics['H2O_ROC_AUC_test']}")
else:
mse_train = imported_model.mse()
rmse_train = imported_model.rmse()
metrics = {'H2O_MSE_train': mse_train, 'H2O_RMSE_train': rmse_train}
print(f"H2O_MSE_train: {metrics['H2O_MSE_train']}")
print(f"H2O_RMSE_train: {metrics['H2O_RMSE_train']}")
h2o.shutdown(prompt=False)
return metrics
def test_modelselection_serialization():
d = h2o.import_file(
path=pyunit_utils.locate("smalldata/logreg/prostate.csv"))
my_y = "GLEASON"
my_x = ["AGE", "RACE", "CAPSULE", "DCAPS", "PSA", "VOL", "DPROS"]
allsubsets_model = modelSelection(seed=12345,
max_predictor_number=7,
mode="allsubsets")
allsubsets_model.train(training_frame=d, x=my_x, y=my_y)
tmpdir = tempfile.mkdtemp()
model_path_allsubsets = allsubsets_model.download_model(tmpdir)
maxr_model = modelSelection(seed=12345,
max_predictor_number=7,
mode="maxr")
maxr_model.train(training_frame=d, x=my_x, y=my_y)
model_path_maxr = maxr_model.download_model(tmpdir)
h2o.remove_all()
d = h2o.import_file(
path=pyunit_utils.locate("smalldata/logreg/prostate.csv"))
loaded_allsubsets_model = h2o.load_model(model_path_allsubsets)
result_frame_allsubsets = loaded_allsubsets_model.result()
numRows = result_frame_allsubsets.nrows
modelIDs_allsubsets = loaded_allsubsets_model._model_json["output"][
"best_model_ids"]
loaded_maxr_model = h2o.load_model(model_path_maxr)
modelIDs_maxr = loaded_allsubsets_model._model_json["output"][
"best_model_ids"]
for ind in list(range(numRows)):
model_from_frame_allsubsets = h2o.get_model(
result_frame_allsubsets["model_id"][ind, 0])
pred_frame_allsubsets = model_from_frame_allsubsets.predict(d)
model_from_id_allsubsets = h2o.get_model(
modelIDs_allsubsets[ind]['name'])
pred_id_allsubsets = model_from_id_allsubsets.predict(d)
pyunit_utils.compare_frames_local(pred_frame_allsubsets,
pred_id_allsubsets,
prob=1)
model_from_id_maxr = h2o.get_model(modelIDs_maxr[ind]['name'])
pred_id_maxr = model_from_id_maxr.predict(d)
pyunit_utils.compare_frames_local(pred_frame_allsubsets,
pred_id_maxr,
prob=1)
def h2o_pred(test):
h2oTest = h2o.H2OFrame(test)
saved_model = h2o.load_model(os.getcwd()+"/XGBoost_1_AutoML_20181105_211213")
preds = saved_model.predict(h2oTest)
preds = preds.as_data_frame()
print(saved_model.model_performance(h2oTest))
print("========================================================")
print("Saving prediction into csv file")
preds.to_csv("test_predict.csv")
return preds
def load(self, path):
try:
import h2o
except ImportError:
raise MissingDependencyException(
"h2o package is required to use H2oModelArtifact")
h2o.init()
model = h2o.load_model(self._model_file_path(path))
return self.pack(model)
def _read(self):
# need to init h2o context so as to use h2o.load_model
utils.getH2oContext()
# Load the first file under _file_path which should be the model file.
# We can do this because if we change the model file, the hash of hash would change
# the _file_path and then we would save the model under different path.
h2o_model_file = os.listdir(self._file_path)[0]
h2o_model_path = os.path.join(self._file_path, h2o_model_file)
import h2o
return h2o.load_model(h2o_model_path)
def milsong_checkpoint():
milsong_train = h2o.upload_file(
pyunit_utils.locate("bigdata/laptop/milsongs/milsongs-train.csv.gz"))
milsong_valid = h2o.upload_file(
pyunit_utils.locate("bigdata/laptop/milsongs/milsongs-test.csv.gz"))
distribution = "gaussian"
# build first model
ntrees1 = random.sample(range(50, 100), 1)[0]
max_depth1 = random.sample(range(2, 6), 1)[0]
min_rows1 = random.sample(range(10, 16), 1)[0]
print "ntrees model 1: {0}".format(ntrees1)
print "max_depth model 1: {0}".format(max_depth1)
print "min_rows model 1: {0}".format(min_rows1)
from h2o.estimators.gbm import H2OGradientBoostingEstimator
model1 = H2OGradientBoostingEstimator(ntrees=ntrees1,
max_depth=max_depth1,
min_rows=min_rows1,
distribution=distribution)
model1.train(x=range(1, milsong_train.ncol),
y=0,
training_frame=milsong_train,
validation_frame=milsong_valid)
# save the model, then load the model
path = pyunit_utils.locate("results")
assert os.path.isdir(
path), "Expected save directory {0} to exist, but it does not.".format(
path)
model_path = h2o.save_model(model1, path=path, force=True)
assert os.path.isdir(
model_path
), "Expected load directory {0} to exist, but it does not.".format(
model_path)
restored_model = h2o.load_model(model_path)
# continue building the model
ntrees2 = ntrees1 + 50
max_depth2 = max_depth1
min_rows2 = min_rows1
print "ntrees model 2: {0}".format(ntrees2)
print "max_depth model 2: {0}".format(max_depth2)
print "min_rows model 2: {0}".format(min_rows2)
model1 = H2OGradientBoostingEstimator(ntrees=ntrees2,
max_depth=max_depth2,
min_rows=min_rows2,
distribution=distribution)
model1.train(x=range(1, milsong_train.ncol),
y=0,
training_frame=milsong_train,
validation_frame=milsong_valid)
def milsong_checkpoint(ip, port):
milsong_train = h2o.upload_file(
h2o.locate("bigdata/laptop/milsongs/milsongs-train.csv.gz"))
milsong_valid = h2o.upload_file(
h2o.locate("bigdata/laptop/milsongs/milsongs-test.csv.gz"))
distribution = "gaussian"
# build first model
ntrees1 = random.sample(range(50, 100), 1)[0]
max_depth1 = random.sample(range(2, 6), 1)[0]
min_rows1 = random.sample(range(10, 16), 1)[0]
print "ntrees model 1: {0}".format(ntrees1)
print "max_depth model 1: {0}".format(max_depth1)
print "min_rows model 1: {0}".format(min_rows1)
model1 = h2o.gbm(x=milsong_train[1:],
y=milsong_train[0],
ntrees=ntrees1,
max_depth=max_depth1,
min_rows=min_rows1,
distribution=distribution,
validation_x=milsong_valid[1:],
validation_y=milsong_valid[0])
# save the model, then load the model
model_path = h2o.save_model(model1, force=True)
restored_model = h2o.load_model(model_path)
shutil.rmtree(model_path)
# continue building the model
ntrees2 = ntrees1 + 50
max_depth2 = max_depth1
min_rows2 = min_rows1
print "ntrees model 2: {0}".format(ntrees2)
print "max_depth model 2: {0}".format(max_depth2)
print "min_rows model 2: {0}".format(min_rows2)
model2 = h2o.gbm(x=milsong_train[1:],
y=milsong_train[0],
ntrees=ntrees2,
max_depth=max_depth2,
min_rows=min_rows2,
distribution=distribution,
validation_x=milsong_valid[1:],
validation_y=milsong_valid[0],
checkpoint=restored_model._id)
# build the equivalent of model 2 in one shot
model3 = h2o.gbm(x=milsong_train[1:],
y=milsong_train[0],
ntrees=ntrees2,
max_depth=max_depth2,
min_rows=min_rows2,
distribution=distribution,
validation_x=milsong_valid[1:],
validation_y=milsong_valid[0])
def glrm_mojo():
h2o.remove_all()
NTESTROWS = 200 # number of test dataset rows
df = pyunit_utils.random_dataset("regression",
seed=1234) # generate random dataset
train = df[NTESTROWS:, :]
test = df[:NTESTROWS, :]
x = df.names
transform_types = ["NONE", "STANDARDIZE", "NORMALIZE", "DEMEAN", "DESCALE"]
transformN = transform_types[randint(0, len(transform_types) - 1)]
# build a GLRM model with random dataset generated earlier
glrmModel = H2OGeneralizedLowRankEstimator(k=3,
transform=transformN,
max_iterations=10,
seed=1234)
glrmModel.train(x=x, training_frame=train)
glrmTrainFactor = h2o.get_frame(
glrmModel._model_json['output']['representation_name'])
assert glrmTrainFactor.nrows==train.nrows, \
"X factor row number {0} should equal training row number {1}.".format(glrmTrainFactor.nrows, train.nrows)
save_GLRM_mojo(glrmModel) # ave mojo model
MOJONAME = pyunit_utils.getMojoName(glrmModel._id)
TMPDIR = os.path.normpath(
os.path.join(os.path.dirname(os.path.realpath('__file__')), "..",
"results", MOJONAME))
h2o.download_csv(test[x], os.path.join(
TMPDIR, 'in.csv')) # save test file, h2o predict/mojo use same file
pred_h2o, pred_mojo = pyunit_utils.mojo_predict(
glrmModel, TMPDIR, MOJONAME, glrmReconstruct=True) # save mojo predict
h2o.save_model(glrmModel, TMPDIR) # save GLRM model
glrmModel2 = h2o.load_model(os.path.join(TMPDIR, MOJONAME))
predict_model = glrmModel2.predict(test)
for col in range(pred_h2o.ncols):
if pred_h2o[col].isfactor():
pred_h2o[col] = pred_h2o[col].asnumeric()
predict_model[col] = predict_model[col].asnumeric()
print("Comparing mojo predict and h2o predict...")
pyunit_utils.compare_frames_local(pred_h2o, pred_mojo, 1, tol=1e-10)
print("Comparing mojo predict and h2o predict from saved model...")
pyunit_utils.compare_frames_local(pred_mojo, predict_model, 1, tol=1e-10)
frameID, mojoXFactor = pyunit_utils.mojo_predict(
glrmModel, TMPDIR, MOJONAME,
glrmReconstruct=False) # save mojo XFactor
glrmTestFactor = h2o.get_frame(
"GLRMLoading_" + frameID) # store the x Factor for new test dataset
print("Comparing mojo x Factor and model x Factor ...")
pyunit_utils.compare_frames_local(glrmTestFactor,
mojoXFactor,
1,
tol=1e-10)
def transform(self, X: dt.Frame):
h2o.init()
model_path = os.path.join(temporary_files_path, self.id)
with open(model_path, "wb") as f:
f.write(self.raw_model_bytes)
model = h2o.load_model(model_path)
os.remove(model_path)
frame = h2o.H2OFrame(X.to_pandas())
try:
return model.anomaly(frame).as_data_frame(header=False)
finally:
h2o.remove(self.id)
def load_model_predict(col_to_predict, test_data):
if col_to_predict == 'animal':
model_path = "mymodel_animal"
elif col_to_predict == "item":
model_path = "mymodel_item"
elif col_to_predict == "destino":
model_path = "mymodel_dest"
h2o_test = h2o.H2OFrame(test_data)
model = h2o.load_model(model_path)
predictions = model.predict(h2o_test)
return predictions.columns
def load_h2o_model(local_dir, filename, extension=""):
"""
Loads a saved H2O Model
:param string local_dir: Local directory where the model is saved
:param string filename: Filename with which the model is saved
:param string extension: Extension to the filename with which the model is saved
:return:
"""
from h2o import load_model
return load_model(local_dir + "/" + filename + extension)
def save_load_model(ip,port):
# Connect to h2o
h2o.init(ip,port)
prostate = h2o.import_frame(h2o.locate("smalldata/prostate/prostate.csv"))
prostate["CAPSULE"] = prostate["CAPSULE"].asfactor()
prostate_glm = h2o.glm(y=prostate["CAPSULE"], x=prostate[["AGE","RACE","PSA","DCAPS"]], family = "binomial",
alpha = [0.5])
model_path = h2o.save_model(prostate_glm, name="delete_model", force=True)
the_model = h2o.load_model(model_path)
assert isinstance(the_model, H2OBinomialModel), "Expected and H2OBinomialModel, but got {0}".format(the_model)
def predict_activities(data_dict):
"""
food_hours, food_calories, active_hours, active_rating, sleep_hours, sleep_duration, comfort_rating
"""
h2o.init()
h2o_model = h2o.load_model(os.path.join(BASE_DIR, os.path.join('h2o_models', 'xgboost-activities')))
data_row = h2o.H2OFrame(data_dict,
column_names=['food_hours', 'food_calories', 'active_hours', 'active_rating', 'sleep_hours',
'sleep_duration', 'comfort_rating'])
data_prediction = h2o_model.predict(data_row)
return data_prediction
def save_load_model(ip,port):
prostate = h2o.import_file(h2o.locate("smalldata/prostate/prostate.csv"))
prostate["CAPSULE"] = prostate["CAPSULE"].asfactor()
prostate_glm = h2o.glm(y=prostate["CAPSULE"], x=prostate[["AGE","RACE","PSA","DCAPS"]], family = "binomial",
alpha = [0.5])
model_path = h2o.save_model(prostate_glm,force=True)
the_model = h2o.load_model(model_path)
shutil.rmtree(model_path)
assert isinstance(the_model, H2OBinomialModel), "Expected and H2OBinomialModel, but got {0}".format(the_model)
def save_load_model():
prostate = h2o.import_file(h2o.locate("smalldata/prostate/prostate.csv"))
prostate["CAPSULE"] = prostate["CAPSULE"].asfactor()
prostate_glm = h2o.glm(y=prostate["CAPSULE"], x=prostate[["AGE","RACE","PSA","DCAPS"]], family = "binomial",
alpha = [0.5])
model_path = h2o.save_model(prostate_glm,force=True)
the_model = h2o.load_model(model_path)
shutil.rmtree(model_path)
assert isinstance(the_model, H2OBinomialModel), "Expected and H2OBinomialModel, but got {0}".format(the_model)
def test_hadoop():
'''
Test H2O read and write to hdfs
'''
hdfs_name_node = os.getenv("NAME_NODE")
h2o_data = h2o.import_file("hdfs://" + hdfs_name_node + "/datasets/100k.csv")
h2o_glm = H2OGeneralizedLinearEstimator(family="binomial", alpha=0.5, Lambda=0.01)
h2o_glm.train(x=range(1, 10), y=0, training_frame=h2o_data) # dont need to train on all features
hdfs_model_path = os.getenv("MODEL_PATH")
h2o.save_model(h2o_glm, "hdfs://" + hdfs_model_path)
new_model = h2o.load_model("hdfs://" + hdfs_model_path)
def plot():
model = h.load_model('D:/AI/AI_Hub/Head Unit Data/rf_covType_v1')
var_im = (model.varimp(1))
var_im = var_im[:5]
sns_plot = sns.barplot(x=var_im.variable,
y=var_im.percentage,
palette="Blues_d")
sns_plot.set_xticklabels(sns_plot.get_xticklabels(),
rotation=15,
fontsize=8)
sns_plot.set(xlabel='Features', ylabel='Variable Importance')
fig = sns_plot.get_figure()
fig.savefig("D:/AI/static/plot.jpg")
return render_template('plot.html')
def get_model(cls):
"""Get the model object for this instance,
loading it if it's not already loaded."""
if cls.model is None:
for file in os.listdir(model_path):
# Assumes that 'AutoML' is somewhere in the filename of a
# model that's been generated. We just load the first model
# that satisfies this constraint, so caveat emptor if you've
# run the 'train' script multiple times - this may still load
# the first model. An obvious to-do is to improve this :-)
if 'GBM' in file:
cls.model = h2o.load_model(os.path.join(model_path, file))
break
return cls.model
def predict(self):
#Resuse the Saved Random Forest Model
model = h2o.load_model('Misc/models/RF_Insurance_model/DRF_model_python_1591600273347_1')
#Convert it to a Spark Dataframe
customer = self.standardize(self.customer)
org_df = self.sc.parallelize([customer]).toDF()
df = self.transform_data(org_df)
#Obtain a result using the saved model
pred = model.predict(self.hc.asH2OFrame(df))
prediction_df = self.hc.asSparkFrame(pred)
prediction_df = prediction_df.withColumn("predict", functions.round("predict", 0))
prediction_df = prediction_df.withColumn("predict", prediction_df["predict"].cast(types.IntegerType()))
result = prediction_df.collect()[0].predict
return result
def test_auto_ml(_model, _df_test):
print('>>>>>>>>>>>>>> Import model and test set')
model_path = join(paths.DIR_MODELS, _model)
model = h2o.load_model(model_path)
hf_test = h2o.H2OFrame(_df_test)
print('>>>>>>>>>>>>>> Predict results for test set')
df_pred = model.predict(hf_test).as_data_frame()
print('>>>>>>>>>>>>>> Calculate mean absolute error')
m_a_e = mean_absolute_error(df_pred.values,
_df_test[features.PRICE].values)
print('Mean absolute error: {}'.format(m_a_e))
def save_load_model():
prostate = h2o.import_file(pyunit_utils.locate("smalldata/prostate/prostate.csv"))
prostate["CAPSULE"] = prostate["CAPSULE"].asfactor()
prostate_glm = H2OGeneralizedLinearEstimator(family="binomial", alpha=[0.5])
prostate_glm.train(x=["AGE","RACE","PSA","DCAPS"], y="CAPSULE", training_frame=prostate)
path = pyunit_utils.locate("results")
assert os.path.isdir(path), "Expected save directory {0} to exist, but it does not.".format(path)
model_path = h2o.save_model(prostate_glm, path=path, force=True)
assert os.path.isfile(model_path), "Expected load file {0} to exist, but it does not.".format(model_path)
the_model = h2o.load_model(model_path)
assert isinstance(the_model, H2OEstimator), "Expected and H2OBinomialModel, but got {0}".format(the_model)
def get_prediction(model_path, iters, data, batch_size):
h2o.init(nthreads=-1)
model = h2o.load_model(model_path)
prediction = []
warnings.filterwarnings("ignore")
t1= datetime.datetime.now()
for i in range(0, iters+1):
_data = data.ix[(i*batch_size):((i+1)*batch_size)]
_data_h20 = h2o.H2OFrame(_data)
pred = model.predict(_data_h20)
prediction += list(pred.as_data_frame(use_pandas=True)['predict'])
t2 = datetime.datetime.now()
print("total run time :", round((t2 - t1).total_seconds() / 60, 2))
h2o.shutdown(prompt = False)
return prediction
def milsong_checkpoint():
milsong_train = h2o.upload_file(pyunit_utils.locate("bigdata/laptop/milsongs/milsongs-train.csv.gz"))
milsong_valid = h2o.upload_file(pyunit_utils.locate("bigdata/laptop/milsongs/milsongs-test.csv.gz"))
# build first model
ntrees1 = random.sample(range(50, 100), 1)[0]
max_depth1 = random.sample(range(2, 6), 1)[0]
min_rows1 = random.sample(range(10, 16), 1)[0]
print "ntrees model 1: {0}".format(ntrees1)
print "max_depth model 1: {0}".format(max_depth1)
print "min_rows model 1: {0}".format(min_rows1)
model1 = H2ORandomForestEstimator(ntrees=ntrees1, max_depth=max_depth1, min_rows=min_rows1, seed=1234)
model1.train(x=range(1, milsong_train.ncol), y=0, training_frame=milsong_train, validation_frame=milsong_valid)
# save the model, then load the model
path = pyunit_utils.locate("results")
assert os.path.isdir(path), "Expected save directory {0} to exist, but it does not.".format(path)
model_path = h2o.save_model(model1, path=path, force=True)
assert os.path.isfile(model_path), "Expected load file {0} to exist, but it does not.".format(model_path)
restored_model = h2o.load_model(model_path)
# continue building the model
ntrees2 = ntrees1 + 50
max_depth2 = max_depth1
min_rows2 = min_rows1
print "ntrees model 2: {0}".format(ntrees2)
print "max_depth model 2: {0}".format(max_depth2)
print "min_rows model 2: {0}".format(min_rows2)
model2 = H2ORandomForestEstimator(
ntrees=ntrees2, max_depth=max_depth2, min_rows=min_rows2, checkpoint=restored_model._id, seed=1234
)
model2.train(x=range(1, milsong_train.ncol), y=0, training_frame=milsong_train, validation_frame=milsong_valid)
# build the equivalent of model 2 in one shot
model3 = H2ORandomForestEstimator(ntrees=ntrees2, max_depth=max_depth2, min_rows=min_rows2, seed=1234)
model3.train(x=range(1, milsong_train.ncol), y=0, training_frame=milsong_train, validation_frame=milsong_valid)
assert isinstance(model2, type(model3))
assert model2.mse(valid=True) == model3.mse(
valid=True
), "Expected Model 2 MSE: {0} to be the same as Model 4 MSE: {1}".format(
model2.mse(valid=True), model3.mse(valid=True)
)
def clv_clustering_scoring(new_customer_details):
# Reading data from the sample csv file
print("Processing Step 1 --> Reading in the sample data")
all_data = pd.read_csv('..\\..\\99_sample_data\\custclv.csv')
#h2o.shutdown()
h2o.init(ip="127.0.0.1", https=True, insecure=True) # initializing h2o
predictors = [
'rfm_score', 'Gender', 'Age', 'HouseType', 'ContactAvailability',
'HomeCountry', 'CreditScore', 'CLV', 'MonthlyValue', 'ActiveMonths'
]
# Data Cleaning
all_data['Gender'] = pd.Categorical(all_data.Gender).codes
all_data['ContactAvailability'] = pd.Categorical(
all_data.ContactAvailability).codes
all_data['HouseType'] = pd.Categorical(all_data.HouseType).codes
all_data['HomeCountry'] = pd.Categorical(all_data.HomeCountry).codes
all_data_h20 = h2o.H2OFrame(all_data)
train, test = all_data_h20.split_frame([0.8], seed=123)
train = train[:, 1:11]
test = test[:, 1:11]
# Loading the H2O model
print("Processing Step 2 --> Loading the H2O model into the solution")
estimator = h2o.load_model(
"..\\..\\02_models\\KMeans_model_python_1537328280878_1")
trained = estimator.predict(all_data_h20)
all_data_h20['cluster'] = trained["predict"].asfactor()
all_data_h20 = all_data_h20.as_data_frame()
print("Processing Step 3 --> Scoring for a sample customer")
sample_customer = test[2, :]
print(sample_customer)
predicted = estimator.predict(sample_customer)
print("Predicted Cluster : ", predicted["predict"].asfactor())
# Calculate average CLV of that cluster
req_value = int(predicted["predict"].asfactor())
req_data = all_data_h20[all_data_h20['cluster'] == req_value]
avg_clv = req_data['CLV'].mean()
print('CLV for new customer = ', str(avg_clv))
print('Process Complete')
return avg_clv
def get_newest_model():
# Find newest model
model_paths = [path for path in os.listdir('models/') if 'automl_model' in path]
model_dates = [model_path.split('automl_model_')[1] for model_path in model_paths]
# Check that there is a model in the path
assert len(model_paths) > 0
# Get most recent model date and the path to the most recent model
newest_model_date = max(model_dates)
newest_model_idx = model_dates.index(newest_model_date)
model_path_to_load = 'models/' + model_paths[newest_model_idx]
# Load newest model
aml = h2o.load_model(model_path_to_load)
return aml
def inference(model, myCSV, threshold=0.920060452296198):
model_name = f"{config.MODEL_PATH}{model}"
model = h2o.load_model(model_name)
h2odf = h2o.H2OFrame(pd.read_csv(myCSV), destination_frame="testData.hex")
df = h2odf.as_data_frame()
predictions = model.predict(h2odf)
# df['alert_h2o'] = predictions.as_data_frame().predict
df['Probability_COVID19'] = predictions.as_data_frame().iloc[:, 2]
df['COVID19_Status'] = df['Probability_COVID19'].map(
lambda x: 1 if x <= threshold else 0)
df['Probability_COVID19'] = 1 - df['Probability_COVID19']
cols = df.columns.tolist()
df = df[cols[-2:] + cols[:-2]]
return df
def save_load_model():
prostate = h2o.import_file(h2o.locate("smalldata/prostate/prostate.csv"))
prostate["CAPSULE"] = prostate["CAPSULE"].asfactor()
prostate_glm = h2o.glm(y=prostate["CAPSULE"], x=prostate[["AGE","RACE","PSA","DCAPS"]], family = "binomial",
alpha = [0.5])
path = os.path.normpath(os.path.join(os.path.dirname(os.path.realpath(__file__)),"..","results"))
assert os.path.isdir(path), "Expected save directory {0} to exist, but it does not.".format(path)
model_path = h2o.save_model(prostate_glm, path=path, force=True)
assert os.path.isdir(model_path), "Expected load directory {0} to exist, but it does not.".format(model_path)
the_model = h2o.load_model(model_path)
assert isinstance(the_model, H2OBinomialModel), "Expected and H2OBinomialModel, but got {0}".format(the_model)
def download_model_filename():
fr = h2o.import_file(
path=pyunit_utils.locate("smalldata/prostate/prostate.csv"))
model = H2OGradientBoostingEstimator(ntrees=10, seed=1234)
model.train(x=list(range(2, fr.ncol)), y=1, training_frame=fr)
# Default filename is model_id
model_path = model.download_model()
# It should be saved in server working directory
assert model_path.endswith(
model.model_id), "Not expected path: {0}".format(model_path)
loaded_model = h2o.load_model(model_path)
assert isinstance(loaded_model, H2OGradientBoostingEstimator)
# Default filename is model_id
tmpdir = tempfile.mkdtemp()
model_path = model.download_model(tmpdir)
assert_equals(os.path.join(tmpdir, model.model_id), model_path,
"Not expected path")
loaded_model = h2o.load_model(model_path)
assert isinstance(loaded_model, H2OGradientBoostingEstimator)
# Custom filename with custom path
model_path = model.download_model(tmpdir, filename="gbm_prostate")
assert_equals(os.path.join(tmpdir, "gbm_prostate"), model_path,
"Not expected path")
loaded_model = h2o.load_model(model_path)
assert isinstance(loaded_model, H2OGradientBoostingEstimator)
# Custom filename with custom path
model_path = model.download_model(tmpdir, filename="gbm_prostate.model")
assert_equals(os.path.join(tmpdir, "gbm_prostate.model"), model_path,
"Not expected path")
loaded_model = h2o.load_model(model_path)
assert isinstance(loaded_model, H2OGradientBoostingEstimator)
# Custom filename with custom path
model_path = model.download_model(tmpdir,
filename=os.path.join(
"not-existing-folder",
"gbm_prostate.model"))
assert_equals(
os.path.join(tmpdir, "not-existing-folder", "gbm_prostate.model"),
model_path, "Not expected path")
loaded_model = h2o.load_model(model_path)
assert isinstance(loaded_model, H2OGradientBoostingEstimator)
# Custom filename with default path
model_path = model.download_model(filename="gbm_prostate2.model")
assert model_path.endswith(
"gbm_prostate2.model"), "Not expected path: {0}".format(model_path)
loaded_model = h2o.load_model(model_path)
assert isinstance(loaded_model, H2OGradientBoostingEstimator)
def index():
if request.method == 'GET':
return render_template('index.html')
elif request.method == 'POST':
loan_amnt = float(request.form.get('loan_amnt', 5000))
term = request.form.get('term', '36 months')
emp_length = request.form.get('emp_length', '1 year')
home_ownership = request.form.get('home_ownership', 'RENT')
purpose = request.form.get('purpose', 'credit card')
addr_state = request.form.get('addr_state', 'AL')
annual_inc = float(request.form.get('annual_inc', 0))
inq_last_6mths = float(request.form.get('inq_last_6mths', 0))
col_names = [
'loan_amnt', 'term', 'emp_length', 'home_ownership', 'purpose',
'addr_state', 'annual_inc', 'inq_last_6mths'
]
df = h2o.H2OFrame.from_python(
[(loan_amnt, term, emp_length, home_ownership, purpose, addr_state,
annual_inc, inq_last_6mths)],
column_names=col_names)
# Convert string variables into factors
string_vars = [i[0] for i in df.types.iteritems() if i[1] == 'string']
for var in string_vars:
df[var] = df[var].asfactor()
saved_model = h2o.load_model(
'/assets/flask_deployment_demo/GBM_model_python_1515678740025_16')
predicted = saved_model.predict(df)
predicted_df = predicted.as_data_frame()
default_prob = round(predicted_df['default'][0], 3)
# Append "predicted scores" to original DF.
df_predictions = df.cbind(predicted)
if default_prob < 0.5:
result = 'Likely to not default'
else:
result = 'Likely to default'
return render_template('index.html', result=result, default_prob=default_prob, \
loan_amnt=loan_amnt, term=term, emp_length=emp_length, home_ownership=home_ownership, \
purpose=purpose, addr_state=addr_state, annual_inc=annual_inc, inq_last_6mths=inq_last_6mths)
def transform(self, X: dt.Frame):
h2o.init(port=config.h2o_recipes_port)
model_path = os.path.join(temporary_files_path, self.id)
with open(model_path, "wb") as f:
f.write(self.raw_model_bytes)
model = h2o.load_model(os.path.abspath(model_path))
remove(model_path)
frame = h2o.H2OFrame(X.to_pandas())
anomaly_frame = None
try:
anomaly_frame = model.anomaly(frame)
anomaly_frame_df = anomaly_frame.as_data_frame(header=False)
return anomaly_frame_df
finally:
h2o.remove(self.id)
h2o.remove(anomaly_frame)
def predict_churn(State, AccountLength, AreaCode, Phone, IntlPlan, VMailPlan,
VMailMessage, DayMins, DayCalls, DayCharge, EveMins,
EveCalls, EveCharge, NightMins, NightCalls, NightCharge,
IntlMins, IntlCalls, IntlCharge, CustServCalls):
# connect to the model scoring service
h2o.connect()
# open the downloaded model
ChurnPredictor = h2o.load_model(path='AutoML-leader')
# define a feature vector to evaluate with the model
newData = pd.DataFrame(
{
'State': State,
'Account Length': AccountLength,
'Area Code': AreaCode,
'Phone': Phone,
'Int\'l Plan': IntlPlan,
'VMail Plan': VMailPlan,
'VMail Message': VMailMessage,
'Day Mins': DayMins,
'Day Calls': DayCalls,
'Day Charge': DayCharge,
'Eve Mins': EveMins,
'Eve Calls': EveCalls,
'Eve Charge': EveCharge,
'Night Mins': NightMins,
'Night Calls': NightCalls,
'Night Charge': NightCharge,
'Intl Mins': IntlMins,
'Intl Calls': IntlCalls,
'Intl Charge': IntlCharge,
'CustServ Calls': CustServCalls
},
index=[0])
# evaluate the feature vector using the model
predictions = ChurnPredictor.predict(h2o.H2OFrame(newData))
predictionsOut = h2o.as_list(predictions, use_pandas=False)
prediction = predictionsOut[1][0]
probabilityChurn = predictionsOut[1][1]
probabilityRetain = predictionsOut[1][2]
return "Prediction: " + str(prediction) + " |Probability to Churn: " + str(
probabilityChurn) + " |Probability to Retain: " + str(
probabilityRetain)
def deepwater_checkpoint():
if not H2ODeepWaterEstimator.available(): return
## build a model
#frame = h2o.import_file(pyunit_utils.locate("bigdata/laptop/deepwater/imagenet/cat_dog_mouse.csv"))
frame = h2o.import_file(
pyunit_utils.locate("smalldata/prostate/prostate.csv"))
frame.drop(0)
frame[1] = frame[1].asfactor()
print(frame.head(5))
model = H2ODeepWaterEstimator(epochs=50,
learning_rate=1e-5,
stopping_rounds=0,
score_duty_cycle=1,
train_samples_per_iteration=-1,
score_interval=0)
model.train(y=1, training_frame=frame)
## save the model
model_path = h2o.save_model(model)
## delete everything - simulate cluster shutdown and restart
h2o.remove_all()
## reimport the model and the frame
model = h2o.load_model(model_path)
#frame = h2o.import_file(pyunit_utils.locate("bigdata/laptop/deepwater/imagenet/cat_dog_mouse.csv"))
frame = h2o.import_file(
pyunit_utils.locate("smalldata/prostate/prostate.csv"))
frame.drop(0)
frame[1] = frame[1].asfactor()
## delete the checkpoint file
os.remove(model_path)
## continue training
model2 = H2ODeepWaterEstimator(epochs=100,
learning_rate=1e-5,
stopping_rounds=0,
score_duty_cycle=1,
train_samples_per_iteration=-1,
score_interval=0,
checkpoint=model.model_id)
model2.train(y=1, training_frame=frame)
model2.show()
def isolation_forest_save_and_load():
print("Isolation Forest Smoke Test")
train = h2o.import_file(pyunit_utils.locate("smalldata/anomaly/ecg_discord_train.csv"))
if_model = H2OIsolationForestEstimator(ntrees=7, seed=12, sample_size=5)
if_model.train(training_frame=train)
path = pyunit_utils.locate("results")
assert os.path.isdir(path), "Expected save directory {0} to exist, but it does not.".format(path)
model_path = h2o.save_model(if_model, path=path, force=True)
assert os.path.isfile(model_path), "Expected load file {0} to exist, but it does not.".format(model_path)
reloaded = h2o.load_model(model_path)
assert isinstance(reloaded, H2OIsolationForestEstimator), "Expected and H2OIsolationForestEstimator, but got {0}"\
.format(reloaded)
def download_model():
prostate = h2o.import_file(pyunit_utils.locate("smalldata/prostate/prostate.csv"))
prostate["CAPSULE"] = prostate["CAPSULE"].asfactor()
prostate_gbm = H2OGradientBoostingEstimator(distribution="bernoulli", ntrees=10, max_depth=8,
min_rows=10, learn_rate=0.2)
prostate_gbm.train(x=["AGE", "RACE", "PSA", "VOL", "GLEASON"],
y="CAPSULE", training_frame=prostate)
path = pyunit_utils.locate("results")
downloaded_model_path = prostate_gbm.download_model(path=path)
assert os.path.isfile(downloaded_model_path), \
"Expected load file {0} to exist, but it does not.".format(downloaded_model_path)
loaded_model = h2o.load_model(downloaded_model_path)
assert isinstance(loaded_model, H2OGradientBoostingEstimator), \
"Expected an H2OGradientBoostingEstimator, but got {0}".format(downloaded_model_path)
def test_hadoop():
'''
Test H2O read and write to hdfs
'''
hdfs_name_node = os.getenv("NAME_NODE")
print("Importing hdfs data")
h2o_data = h2o.import_file("hdfs://" + hdfs_name_node + "/datasets/100k.csv")
print("Spliting data")
train,test = h2o_data.split_frame(ratios=[0.1])
h2o_glm = H2OGeneralizedLinearEstimator(family="binomial", alpha=0.5, Lambda=0.01)
print("Training")
h2o_glm.train(x=range(1, 10), y=0, training_frame=train) # dont need to train on all features
hdfs_model_path = os.getenv("MODEL_PATH")
print("Saving model")
new_model_path = h2o.save_model(h2o_glm, "hdfs://" + hdfs_name_node + "/" + hdfs_model_path)
print("Loading back model")
new_model = h2o.load_model(new_model_path)
def __init__(self, model_name, model_base_path):
"""
Initialize the service.
Args:
model_name: The name of the model.
model_base_path: The file path of the model.
Return:
None
"""
super(H2oInferenceService, self).__init__()
# Start the h2o server
if os.path.isfile("/tmp/h2o.jar"):
logging.info("Run to run command 'java -jar /tmp/h2o.jar'")
subprocess.Popen(["java", "-jar", "/tmp/h2o.jar"])
logging.info("Sleep 10s to wait for h2o server")
time.sleep(10)
local_model_base_path = filesystem_util.download_hdfs_moels(
model_base_path)
self.model_name = model_name
self.model_base_path = local_model_base_path
self.model_version_list = [1]
self.model_graph_signature = ""
self.platform = "H2o"
self.preprocess_function, self.postprocess_function = preprocess_util.get_preprocess_postprocess_function_from_model_path(
self.model_base_path)
import h2o
logger.info("Try to initialize and connect the h2o server")
h2o.init()
logger.info("Try to load the h2o model")
model = h2o.load_model(self.model_base_path)
self.model = model
# TODO: Update the signature with readable string
self.model_graph_signature = "{}".format(self.model.full_parameters)
def milsong_checkpoint():
milsong_train = h2o.upload_file(tests.locate("bigdata/laptop/milsongs/milsongs-train.csv.gz"))
milsong_valid = h2o.upload_file(tests.locate("bigdata/laptop/milsongs/milsongs-test.csv.gz"))
# build first model
ntrees1 = random.sample(range(50,100),1)[0]
max_depth1 = random.sample(range(2,6),1)[0]
min_rows1 = random.sample(range(10,16),1)[0]
print "ntrees model 1: {0}".format(ntrees1)
print "max_depth model 1: {0}".format(max_depth1)
print "min_rows model 1: {0}".format(min_rows1)
model1 = h2o.random_forest(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees1,max_depth=max_depth1, min_rows=min_rows1,
validation_x=milsong_valid[1:],validation_y=milsong_valid[0],seed=1234)
# save the model, then load the model
path = os.path.normpath(os.path.join(os.path.dirname(os.path.realpath(__file__)),"..","..","results"))
assert os.path.isdir(path), "Expected save directory {0} to exist, but it does not.".format(path)
model_path = h2o.save_model(model1, path=path, force=True)
assert os.path.isdir(model_path), "Expected load directory {0} to exist, but it does not.".format(model_path)
restored_model = h2o.load_model(model_path)
# continue building the model
ntrees2 = ntrees1 + 50
max_depth2 = max_depth1
min_rows2 = min_rows1
print "ntrees model 2: {0}".format(ntrees2)
print "max_depth model 2: {0}".format(max_depth2)
print "min_rows model 2: {0}".format(min_rows2)
model2 = h2o.random_forest(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees2,max_depth=max_depth2, min_rows=min_rows2,
validation_x=milsong_valid[1:],validation_y=milsong_valid[0],
checkpoint=restored_model._id,seed=1234)
# build the equivalent of model 2 in one shot
model3 = h2o.random_forest(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees2,max_depth=max_depth2, min_rows=min_rows2,
validation_x=milsong_valid[1:],validation_y=milsong_valid[0],seed=1234)
assert isinstance(model2,type(model3))
assert model2.mse(valid=True)==model3.mse(valid=True), "Expected Model 2 MSE: {0} to be the same as Model 4 MSE: {1}".format(model2.mse(valid=True), model3.mse(valid=True))
def glrm_mojo():
h2o.remove_all()
NTESTROWS = 200 # number of test dataset rows
df = pyunit_utils.random_dataset("regression", seed=1234) # generate random dataset
train = df[NTESTROWS:, :]
test = df[:NTESTROWS, :]
x = df.names
transform_types = ["NONE", "STANDARDIZE", "NORMALIZE", "DEMEAN", "DESCALE"]
transformN = transform_types[randint(0, len(transform_types)-1)]
# build a GLRM model with random dataset generated earlier
glrmModel = H2OGeneralizedLowRankEstimator(k=3, transform=transformN, max_iterations=10, seed=1234)
glrmModel.train(x=x, training_frame=train)
glrmTrainFactor = h2o.get_frame(glrmModel._model_json['output']['representation_name'])
assert glrmTrainFactor.nrows==train.nrows, \
"X factor row number {0} should equal training row number {1}.".format(glrmTrainFactor.nrows, train.nrows)
save_GLRM_mojo(glrmModel) # ave mojo model
MOJONAME = pyunit_utils.getMojoName(glrmModel._id)
TMPDIR = os.path.normpath(os.path.join(os.path.dirname(os.path.realpath('__file__')), "..", "results", MOJONAME))
h2o.download_csv(test[x], os.path.join(TMPDIR, 'in.csv')) # save test file, h2o predict/mojo use same file
pred_h2o, pred_mojo = pyunit_utils.mojo_predict(glrmModel, TMPDIR, MOJONAME, glrmReconstruct=True) # save mojo predict
h2o.save_model(glrmModel, TMPDIR) # save GLRM model
glrmModel2 = h2o.load_model(os.path.join(TMPDIR,MOJONAME))
predict_model = glrmModel2.predict(test)
for col in range(pred_h2o.ncols):
if pred_h2o[col].isfactor():
pred_h2o[col] = pred_h2o[col].asnumeric()
predict_model[col] = predict_model[col].asnumeric()
print("Comparing mojo predict and h2o predict...")
pyunit_utils.compare_frames_local(pred_h2o, pred_mojo, 1, tol=1e-10)
print("Comparing mojo predict and h2o predict from saved model...")
pyunit_utils.compare_frames_local(pred_mojo, predict_model, 1, tol=1e-10)
frameID, mojoXFactor = pyunit_utils.mojo_predict(glrmModel, TMPDIR, MOJONAME, glrmReconstruct=False) # save mojo XFactor
glrmTestFactor = h2o.get_frame("GLRMLoading_"+frameID) # store the x Factor for new test dataset
print("Comparing mojo x Factor and model x Factor ...")
pyunit_utils.compare_frames_local(glrmTestFactor, mojoXFactor, 1, tol=1e-10)
def milsong_checkpoint():
milsong_train = h2o.upload_file(pyunit_utils.locate("bigdata/laptop/milsongs/milsongs-train.csv.gz"))
milsong_valid = h2o.upload_file(pyunit_utils.locate("bigdata/laptop/milsongs/milsongs-test.csv.gz"))
distribution = "gaussian"
# build first model
ntrees1 = random.sample(list(range(50,100)),1)[0]
max_depth1 = random.sample(list(range(2,6)),1)[0]
min_rows1 = random.sample(list(range(10,16)),1)[0]
print("ntrees model 1: {0}".format(ntrees1))
print("max_depth model 1: {0}".format(max_depth1))
print("min_rows model 1: {0}".format(min_rows1))
model1 = h2o.gbm(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees1,max_depth=max_depth1, min_rows=min_rows1,
distribution=distribution,validation_x=milsong_valid[1:],validation_y=milsong_valid[0])
# save the model, then load the model
path = pyunit_utils.locate("results")
assert os.path.isdir(path), "Expected save directory {0} to exist, but it does not.".format(path)
model_path = h2o.save_model(model1, path=path, force=True)
assert os.path.isfile(model_path), "Expected load file {0} to exist, but it does not.".format(model_path)
restored_model = h2o.load_model(model_path)
# continue building the model
ntrees2 = ntrees1 + 50
max_depth2 = max_depth1
min_rows2 = min_rows1
print("ntrees model 2: {0}".format(ntrees2))
print("max_depth model 2: {0}".format(max_depth2))
print("min_rows model 2: {0}".format(min_rows2))
model2 = h2o.gbm(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees2,max_depth=max_depth2, min_rows=min_rows2,
distribution=distribution,validation_x=milsong_valid[1:],validation_y=milsong_valid[0],
checkpoint=restored_model.model_id)
# build the equivalent of model 2 in one shot
model3 = h2o.gbm(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees2,max_depth=max_depth2, min_rows=min_rows2,
distribution=distribution,validation_x=milsong_valid[1:],validation_y=milsong_valid[0])
def test_saved_binary_model_produces_same_predictions_as_original():
ds = prepare_data(blending)
base_models = train_base_models(ds)
se_model = train_stacked_ensemble(ds, base_models)
#Predict in ensemble in Py client
preds_py = se_model.predict(ds.test)
tmp_dir = tempfile.mkdtemp()
try:
bin_file = h2o.save_model(se_model, tmp_dir)
#Load binary model and predict
bin_model = h2o.load_model(pu.locate(bin_file))
preds_bin = bin_model.predict(ds.test)
finally:
shutil.rmtree(tmp_dir)
#Predictions from model in Py and binary model should be the same
pred_diff = preds_bin - preds_py
assert pred_diff["p0"].max() < 1e-11
assert pred_diff["p1"].max() < 1e-11
assert pred_diff["p0"].min() > -1e-11
assert pred_diff["p1"].min() > -1e-11
def milsong_checkpoint(ip,port):
milsong_train = h2o.upload_file(h2o.locate("bigdata/laptop/milsongs/milsongs-train.csv.gz"))
milsong_valid = h2o.upload_file(h2o.locate("bigdata/laptop/milsongs/milsongs-test.csv.gz"))
# build first model
ntrees1 = random.sample(range(50,100),1)[0]
max_depth1 = random.sample(range(2,6),1)[0]
min_rows1 = random.sample(range(10,16),1)[0]
print "ntrees model 1: {0}".format(ntrees1)
print "max_depth model 1: {0}".format(max_depth1)
print "min_rows model 1: {0}".format(min_rows1)
model1 = h2o.random_forest(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees1,max_depth=max_depth1, min_rows=min_rows1,
validation_x=milsong_valid[1:],validation_y=milsong_valid[0],seed=1234)
# save the model, then load the model
model_path = h2o.save_model(model1,force=True)
restored_model = h2o.load_model(model_path)
shutil.rmtree(model_path)
# continue building the model
ntrees2 = ntrees1 + 50
max_depth2 = max_depth1
min_rows2 = min_rows1
print "ntrees model 2: {0}".format(ntrees2)
print "max_depth model 2: {0}".format(max_depth2)
print "min_rows model 2: {0}".format(min_rows2)
model2 = h2o.random_forest(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees2,max_depth=max_depth2, min_rows=min_rows2,
validation_x=milsong_valid[1:],validation_y=milsong_valid[0],
checkpoint=restored_model._id,seed=1234)
# build the equivalent of model 2 in one shot
model3 = h2o.random_forest(x=milsong_train[1:],y=milsong_train[0],ntrees=ntrees2,max_depth=max_depth2, min_rows=min_rows2,
validation_x=milsong_valid[1:],validation_y=milsong_valid[0],seed=1234)
assert isinstance(model2,type(model3))
assert model2.mse(valid=True)==model3.mse(valid=True), "Expected Model 2 MSE: {0} to be the same as Model 4 MSE: {1}".format(model2.mse(valid=True), model3.mse(valid=True))
def h2oapi():
"""
Python API test: h2o.load_model(path)
"""
training_data = h2o.import_file(pyunit_utils.locate("smalldata/logreg/benign.csv"))
Y = 3
X = [0, 1, 2, 4, 5, 6, 7, 8, 9, 10]
model = H2OGeneralizedLinearEstimator(family="binomial", alpha=0, Lambda=1e-5)
model.train(x=X, y=Y, training_frame=training_data)
try:
results_dir = pyunit_utils.locate("results") # find directory path to results folder
h2o.save_model(model, path=results_dir, force=True) # save model
full_path_filename = os.path.join(results_dir, model._id)
assert os.path.isfile(full_path_filename), "h2o.save_model() command is not working."
model_reloaded = h2o.load_model(full_path_filename)
assert_is_type(model, H2OGeneralizedLinearEstimator)
assert_is_type(model_reloaded, H2OGeneralizedLinearEstimator)
except Exception as e:
if 'File not found' in e.args[0]:
print("Directory is not writable. h2o.load_model() command is not tested.")
else:
assert False, "h2o.load_model() command is not working."
features = list(range(0,784)) target = 784 train[target] = train[target].asfactor() valid[target] = valid[target].asfactor() # Build model model = H2ODeepWaterEstimator(epochs=20, activation="Rectifier", hidden=[200,200], ignore_const_cols=False, mini_batch_size=256, input_dropout_ratio=0.1, hidden_dropout_ratios=[0.5,0.5], stopping_rounds=3, stopping_tolerance=0.05, stopping_metric="misclassification", score_interval=2, score_duty_cycle=0.5, score_training_samples=1000, score_validation_samples=1000, gpu=True, seed=1234) model.train(x=features, y=target, training_frame=train, validation_frame=valid) # Evaluate model model.show() print(model.scoring_history()) # Checkpoint model model_path = h2o.save_model(model=model, force=True) # Load model model_ckpt = h2o.load_model(model_path) # Start training from checkpoint model_warm = H2ODeepWaterEstimator(checkpoint=model_ckpt.model_id, epochs=100, activation="Rectifier", hidden=[200,200], ignore_const_cols=False, mini_batch_size=256, input_dropout_ratio=0.1, hidden_dropout_ratios=[0.5,0.5], stopping_rounds=3, stopping_tolerance=0.05, stopping_metric="misclassification", score_interval=2, score_duty_cycle=0.5, score_training_samples=1000, score_validation_samples=1000, gpu=True, seed=1234) model_warm.train(x=features, y=target, training_frame=train, validation_frame=valid) # Evaluate checkpointed model model_warm.show() print(model_warm.scoring_history())
def cars_checkpoint(ip,port):
cars = h2o.upload_file(h2o.locate("smalldata/junit/cars_20mpg.csv"))
s = cars.runif()
train = cars[s > .2]
valid = cars[s <= .2]
# choose the type model-building exercise (multinomial classification or regression). 0:regression, 1:binomial,
# 2:multinomial
problem = random.sample(range(3),1)[0]
# pick the predictors and response column
predictors = ["displacement","power","weight","acceleration","year"]
if problem == 1 :
response_col = "economy_20mpg"
cars[response_col] = cars[response_col].asfactor()
elif problem == 2 :
response_col = "cylinders"
cars[response_col] = cars[response_col].asfactor()
else :
response_col = "economy"
print "Response column: {0}".format(response_col)
# build first model
ntrees1 = random.sample(range(5,21),1)[0]
max_depth1 = random.sample(range(2,6),1)[0]
min_rows1 = random.sample(range(10,16),1)[0]
print "ntrees model 1: {0}".format(ntrees1)
print "max_depth model 1: {0}".format(max_depth1)
print "min_rows model 1: {0}".format(min_rows1)
model1 = h2o.random_forest(x=train[predictors],y=train[response_col],ntrees=ntrees1,max_depth=max_depth1,
min_rows=min_rows1, validation_x=valid[predictors],validation_y=valid[response_col],
seed=2345)
# save the model, remove all keys, then load the model
model_path = h2o.save_model(model1, name="delete_model", force=True)
restored_model = h2o.load_model(model_path)
# continue building the model with the same max_depth and min_rows
ntrees2 = ntrees1 + random.sample(range(5,21),1)[0]
max_depth2 = max_depth1
min_rows2 = min_rows1
print "ntrees model 2: {0}".format(ntrees2)
print "max_depth model 2: {0}".format(max_depth2)
print "min_rows model 2: {0}".format(min_rows2)
model2 = h2o.random_forest(x=train[predictors],y=train[response_col],ntrees=ntrees2,max_depth=max_depth2,
min_rows=min_rows2,checkpoint=restored_model._id,validation_x=valid[predictors],
validation_y=valid[response_col],seed=2345)
# continue building the model, but with different max_depth and min_rows (ensemble)
ntrees3 = ntrees2
max_depth3 = max_depth2 + random.sample(range(3,6),1)[0]
min_rows3 = min_rows2 + random.sample(range(5,10),1)[0]
print "ntrees model 3: {0}".format(ntrees3)
print "max_depth model 3: {0}".format(max_depth3)
print "min_rows model 3: {0}".format(min_rows3)
model3 = h2o.random_forest(x=train[predictors],y=train[response_col],ntrees=ntrees3,max_depth=max_depth3,
min_rows=min_rows3,checkpoint=restored_model._id,validation_x=valid[predictors],
validation_y=valid[response_col],seed=2345)
# build the equivalent of model 2 in one shot
model4 = h2o.random_forest(x=train[predictors],y=train[response_col],ntrees=ntrees2,max_depth=max_depth2,
min_rows=min_rows2,validation_frame=valid,validation_x=valid[predictors],
validation_y=valid[response_col],seed=2345)
if problem == 0:
assert isinstance(model2,type(model4))
assert model2.mse(valid=True)==model4.mse(valid=True)
assert model3.mse(valid=True)!=model4.mse(valid=True)
elif problem == 1:
assert isinstance(model2,type(model4))
assert model2.auc(valid=True)==model4.auc(valid=True)
assert model3.auc(valid=True)!=model4.auc(valid=True)
assert model2.logloss(valid=True)==model4.logloss(valid=True)
assert model3.logloss(valid=True)!=model4.logloss(valid=True)
assert model2.giniCoef(valid=True)==model4.giniCoef(valid=True)
assert model3.giniCoef(valid=True)!=model4.giniCoef(valid=True)
else:
assert isinstance(model2,type(model4))
assert model2.mse(valid=True)==model4.mse(valid=True)
assert model3.mse(valid=True)!=model4.mse(valid=True)
assert model2.r2(valid=True)==model4.r2(valid=True)
assert model3.r2(valid=True)!=model4.r2(valid=True)
def evalmodel(df):
glm_classifier = h2o.load_model('./model')
result = h2o.as_list(glm_classifier.predict(df), use_pandas = False)
result.pop(0) #get rid of the column header
result = [float(r[0]) for r in result] #the results are each returned as 1-element lists. fix that.
return result
def load(location):
"""Loads a persisted state of an instance of H2OPipeline
from disk. This method will handle loading H2OEstimator models separately
and outside of the constraints of the pickle package.
Note that this is a static method and should be called accordingly:
>>> def load_pipe():
... return H2OPipeline.load('path/to/h2o/pipeline.pkl') # GOOD!
>>>
>>> pipe = load_pipe() # doctest: +SKIP
Also note that since H2OPipeline can contain an H2OEstimator, it's
``load`` functionality differs from that of its superclass, BaseH2OFunctionWrapper
and will not function properly if called at the highest level of abstraction:
>>> def load_pipe():
... return BaseH2OFunctionWrapper.load('path/to/h2o/pipeline.pkl') # BAD!
>>>
>>> pipe = load_pipe() # doctest: +SKIP
Furthermore, trying to load a different type of BaseH2OFunctionWrapper from
this method will raise a TypeError:
>>> def load_pipe():
... return H2OPipeline.load('path/to/some/other/transformer.pkl') # BAD!
>>>
>>> pipe = load_pipe() # doctest: +SKIP
Parameters
----------
location : str
The location where the persisted H2OPipeline model resides.
Returns
-------
model : H2OPipeline
The unpickled instance of the H2OPipeline model
"""
with open(location, 'rb') as f:
model = pickle.load(f)
if not isinstance(model, H2OPipeline):
raise TypeError('expected H2OPipeline, got %s' % type(model))
# if the pipe didn't end in an h2o estimator, we don't need to
# do the following IO segment...
ends_in_h2o = hasattr(model, 'model_loc_')
if ends_in_h2o:
# read the model portion, delete the model path
ex = None
for pth in [model.model_loc_, 'hdfs://%s' % model.model_loc_]:
try:
the_h2o_model = h2o.load_model(pth)
except Exception as e:
if ex is None:
ex = e
else:
# only throws if fails twice
raise ex
model.steps[-1] = (model.est_name_, the_h2o_model)
return model
def load(location):
"""Loads a persisted state of an instance of BaseH2OSearchCV
from disk. This method will handle loading H2OEstimator models separately
and outside of the constraints of the pickle package.
Note that this is a static method and should be called accordingly:
>>> def load_search():
... return BaseH2OSearchCV.load('path/to/h2o/search.pkl') # GOOD!
>>>
>>> search = load_search() # doctest: +SKIP
Also note that since BaseH2OSearchCV will contain an H2OEstimator, it's
``load`` functionality differs from that of its superclass, BaseH2OFunctionWrapper
and will not function properly if called at the highest level of abstraction:
>>> def load_search():
... return BaseH2OFunctionWrapper.load('path/to/h2o/search.pkl') # BAD!
>>>
>>> search = load_search() # doctest: +SKIP
Furthermore, trying to load a different type of BaseH2OFunctionWrapper from
this method will raise a TypeError:
>>> def load_search():
... return BaseH2OSearchCV.load('path/to/some/other/transformer.pkl') # BAD!
>>>
>>> search = load_search() # doctest: +SKIP
Parameters
----------
location : str
The location where the persisted BaseH2OSearchCV model resides.
Returns
-------
model : BaseH2OSearchCV
The unpickled instance of the BaseH2OSearchCV model
"""
with open(location, 'rb') as f:
model = pickle.load(f)
if not isinstance(model, BaseH2OSearchCV):
raise TypeError('expected BaseH2OSearchCV, got %s' % type(model))
# read the model portion, delete the model path
ex = None
the_h2o_est = None
for pth in [model.model_loc_, 'hdfs://%s' % model.model_loc_]:
try:
the_h2o_est = h2o.load_model(pth)
except Exception as e:
if ex is None:
ex = e
else:
# only throws if fails twice
raise ex
# break if successfully loaded
if the_h2o_est is not None:
break
# if self.estimator is None, then it's simply the H2OEstimator,
# otherwise it's going to be the H2OPipeline
if model.best_estimator_ is None:
model.best_estimator_ = the_h2o_est
model.estimator = _new_base_estimator(model.est_type_, model.base_estimator_parms_)
else:
model.best_estimator_.steps[-1] = (model.est_name_, the_h2o_est)
model.estimator.steps[-1] = (
model.est_name_, _new_base_estimator(model.est_type_, model.base_estimator_parms_))
return model
def cars_checkpoint():
cars = h2o.upload_file(pyunit_utils.locate("smalldata/junit/cars_20mpg.csv"))
s = cars.runif()
train = cars[s > .2]
valid = cars[s <= .2]
print("\n*** Description (chunk distribution, etc) of training frame:")
train.describe()
print("\n*** Description (chunk distribution, etc) of validation frame:")
valid.describe()
# choose the type model-building exercise (multinomial classification or regression). 0:regression, 1:binomial,
# 2:multinomial
problem = random.sample(list(range(3)),1)[0]
# pick the predictors and response column, along with the correct distribution
predictors = ["displacement","power","weight","acceleration","year"]
if problem == 1 :
response_col = "economy_20mpg"
distribution = "bernoulli"
train[response_col] = train[response_col].asfactor()
valid[response_col] = valid[response_col].asfactor()
elif problem == 2 :
response_col = "cylinders"
distribution = "multinomial"
train[response_col] = train[response_col].asfactor()
valid[response_col] = valid[response_col].asfactor()
else :
response_col = "economy"
distribution = "gaussian"
print("\n*** Distribution: {0}".format(distribution))
print("\n*** Response column: {0}".format(response_col))
# build first model
ntrees1 = 5
max_depth1 = random.sample(list(range(2,6)),1)[0]
min_rows1 = random.sample(list(range(10,16)),1)[0]
print("\n*** Building model 1 with the following parameters:")
print("*** ntrees model 1: {0}".format(ntrees1))
print("*** max_depth model 1: {0}".format(max_depth1))
print("*** min_rows model 1: {0}".format(min_rows1))
from h2o.estimators.gbm import H2OGradientBoostingEstimator
model1 = H2OGradientBoostingEstimator(ntrees=ntrees1,
max_depth=max_depth1,
min_rows=min_rows1,
score_each_iteration=True,
distribution=distribution)
model1.train(x=predictors, y=response_col,training_frame=train,validation_frame=valid)
# model1 = h2o.gbm(x=train[predictors],
# y=train[response_col],
# ntrees=ntrees1,
# max_depth=max_depth1,
# min_rows=min_rows1,
# score_each_iteration=True,
# distribution=distribution,
# validation_x=valid[predictors],
# validation_y=valid[response_col])
# save the model, then load the model
model_path = h2o.save_model(model1, name="delete_model", force=True)
restored_model = h2o.load_model(model_path)
shutil.rmtree("delete_model")
# continue building the model
ntrees2 = ntrees1 + 5
max_depth2 = max_depth1
min_rows2 = min_rows1
print("\n*** Continuing to build model 1 (now called model 2) with the following parameters:")
print("*** ntrees model 2: {0}".format(ntrees2))
print("*** max_depth model 2: {0}".format(max_depth2))
print("*** min_rows model 2: {0}".format(min_rows2))
model2 = H2OGradientBoostingEstimator(ntrees=ntrees2,
max_depth=max_depth2,
min_rows=min_rows2,
distribution=distribution,
score_each_iteration=True,
checkpoint=restored_model._id)
model2.train(x=predictors,y=response_col,training_frame=train,validation_frame=valid)
# model2 = h2o.gbm(x=train[predictors],
# y=train[response_col],
# ntrees=ntrees2,
# max_depth=max_depth2,
# min_rows=min_rows2,
# distribution=distribution,
# score_each_iteration=True,
# validation_x=valid[predictors],
# validation_y=valid[response_col],
# checkpoint=restored_model._id)
# continue building the model, but with different number of trees
ntrees3 = ntrees2 + 50
max_depth3 = max_depth1
min_rows3 = min_rows1
print("\n*** Continuing to build model 1 (now called model 3) with the following parameters:")
print("*** ntrees model 3: {0}".format(ntrees3))
print("*** max_depth model 3: {0}".format(max_depth3))
print("*** min_rows model 3: {0}".format(min_rows3))
model3 = H2OGradientBoostingEstimator(ntrees=ntrees3,
max_depth=max_depth3,
min_rows=min_rows3,
distribution=distribution,
score_each_iteration=True,
checkpoint=restored_model._id)
model3.train(x=predictors,y=response_col,training_frame=train,validation_frame=valid)
# model3 = h2o.gbm(x=train[predictors],
# y=train[response_col],
# ntrees=ntrees3,
# max_depth=max_depth3,
# min_rows=min_rows3,
# distribution=distribution,
# score_each_iteration=True,
# validation_x=valid[predictors],
# validation_y=valid[response_col],
# checkpoint=restored_model._id)
# build the equivalent of model 2 in one shot
print("\n*** Building the equivalent of model 2 (called model 4) in one shot:")
model4 = H2OGradientBoostingEstimator(ntrees=ntrees2,
max_depth=max_depth2,
min_rows=min_rows2,
distribution=distribution,
score_each_iteration=True)
model4.train(x=predictors,y=response_col,training_frame=train,validation_frame=valid)
# model4 = h2o.gbm(x=train[predictors],
# y=train[response_col],
# ntrees=ntrees2,
# max_depth=max_depth2,
# min_rows=min_rows2,
# distribution=distribution,
# score_each_iteration=True,
# validation_x=valid[predictors],
# validation_y=valid[response_col])
print("\n*** Model Summary for model 2:")
print(model2.summary())
print("\n*** Model Summary for model 3:")
print(model3.summary())
print("\n*** Model Summary for model 4:")
print(model4.summary())
print("\n*** Score History for model 2:")
print(model2.scoring_history())
print("\n*** Score History for model 3:")
print(model3.scoring_history())
print("\n*** Score History for model 4:")
print(model4.scoring_history())
# checks
if problem == 0:
assert isinstance(model2,type(model4))
assert model2.mse(valid=True)==model4.mse(valid=True), "Expected Model 2 MSE: {0} to be the same as Model 4 MSE: {1}".format(model2.mse(valid=True), model4.mse(valid=True))
#assert model3.mse(valid=True)!=model4.mse(valid=True), "Expected Model 3 MSE: {0} to be different from Model 4 MSE: {1}".format(model3.mse(valid=True), model4.mse(valid=True))
elif problem == 1:
assert isinstance(model2,type(model4))
assert model2.auc(valid=True)==model4.auc(valid=True), "Expected Model 2 AUC: {0} to be the same as Model 4 AUC: {1}".format(model2.auc(valid=True), model4.auc(valid=True))
#assert model3.auc(valid=True)!=model4.auc(valid=True), "Expected Model 3 AUC: {0} to be different from Model 4 AUC: {1}".format(model3.auc(valid=True), model4.auc(valid=True))
assert model2.logloss(valid=True)==model4.logloss(valid=True), "Expected Model 2 Log Loss: {0} to be the same as Model 4 Log Loss: {1}".format(model2.logloss(valid=True), model4.logloss(valid=True))
#assert model3.logloss(valid=True)!=model4.logloss(valid=True), "Expected Model 3 Log Loss: {0} to be different from Model 4 Log Loss: {1}".format(model2.logloss(valid=True), model4.logloss(valid=True))
assert model2.giniCoef(valid=True)==model4.giniCoef(valid=True), "Expected Model 2 Gini Coef {0} to be the same as Model 4 Gini Coef: {1}".format(model2.giniCoef(valid=True), model4.giniCoef(valid=True))
#assert model3.giniCoef(valid=True)!=model4.giniCoef(valid=True), "Expected Model 3 Gini Coef: {0} to be different from Model 4 Gini Coef: {1}".format(model2.giniCoef(valid=True), model4.giniCoef(valid=True))
else:
assert isinstance(model2,type(model4))
assert model2.mse(valid=True)==model4.mse(valid=True), "Expected Model 2 MSE: {0} to be the same as Model 4 MSE: {1}".format(model2.mse(valid=True), model4.mse(valid=True))
#assert model3.mse(valid=True)!=model4.mse(valid=True), "Expected Model 3 MSE: {0} to be different from Model 4 MSE: {1}".format(model3.mse(valid=True), model4.mse(valid=True))
assert model2.r2(valid=True)==model4.r2(valid=True), "Expected Model 2 R2: {0} to be the same as Model 4 R2: {1}".format(model2.r2(valid=True), model4.r2(valid=True))
import h2o
h2o.init()
md = h2o.load_model("1-train+model/test_airline_GBM_100k")
dx_test = h2o.import_file("https://s3.amazonaws.com/benchm-ml--main/test.csv")
dx_test1 = dx_test[0,0:8]
dx_test1.as_data_frame()
%time md.predict(dx_test1).as_data_frame() ## h2o frame
## Wall time: 120 ms
dpy_test1 = dx_test1.as_data_frame() ## py object (pandas)
%time md.predict(h2o.H2OFrame.from_python(dpy_test1, column_names = ["Month","DayofMonth","DayOfWeek","DepTime","UniqueCarrier","Origin","Dest","Distance"])).as_data_frame()
## Wall time: 255 ms
# %time dx_test1_2 = h2o.H2OFrame.from_python(dpy_test1, column_names = ["Month","DayofMonth","DayOfWeek","DepTime","UniqueCarrier","Origin","Dest","Distance"])
# ## Wall time: 134 ms
# dx_test1_2.as_data_frame()
# %time md.predict(dx_test1_2).as_data_frame()
# ## Wall time: 121 ms