def compare_perf():
"compare performance of two models"
test_file = SCRIPT_DIR / 'rotten_tomatoes_test.csv'
output_dir = get_ludwig_output_dir()
model_name = "run"
experiment_name1 = "rt"
experiment_dir = experiment_name1 + '_' + model_name
model_dir1 = output_dir / 'results' / experiment_dir / 'model'
model1 = LudwigModel.load(model_dir1, backend='local')
eval_stats1, predictions1, output_dir1 = model1.evaluate(
dataset=str(test_file))
experiment_name2 = "rt_zscore"
experiment_dir = experiment_name2 + '_' + model_name
model_dir2 = output_dir / 'results' / experiment_dir / 'model'
model2 = LudwigModel.load(model_dir2, backend='local')
eval_stats2, predictions2, output_dir2 = model2.evaluate(
dataset=str(test_file))
list_of_eval_stats = [eval_stats1, eval_stats2]
model_names = [experiment_name1, experiment_name2]
compare_performance(
list_of_eval_stats,
"recommended",
model_names=model_names,
output_directory=output_dir,
file_format="png",
)
print(f'{output_dir=}')
def predict(self, mode='predict', ignore_columns=[]):
predict_dataframe, model_definition = self._create_ludwig_dataframe(mode)
model_definition = self.transaction.hmd['ludwig_data']['model_definition']
model = LudwigModel.load(self.transaction.lmd['ludwig_data']['ludwig_save_path'])
if self.transaction.lmd['model_order_by'] is None:
timeseries_cols = []
else:
timeseries_cols = list(map(lambda x: x[0], self.transaction.lmd['model_order_by']))
if len(timeseries_cols) > 0:
predict_dataframe, model_definition = self._translate_df_to_timeseries_format(predict_dataframe, model_definition, timeseries_cols)
for ignore_col in ignore_columns:
try:
predict_dataframe[ignore_col] = [None] * len(predict_dataframe[ignore_col])
except:
for date_appendage in ['_year', '_month','_day']:
predict_dataframe[ignore_col + date_appendage] = [None] * len(predict_dataframe[ignore_col + date_appendage])
with disable_ludwig_output():
model = LudwigModel.load(self.transaction.lmd['ludwig_data']['ludwig_save_path'])
predictions = model.predict(data_df=predict_dataframe)
for col_name in predictions:
col_name_normalized = col_name.replace('_predictions', '')
predictions = predictions.rename(columns = {col_name: col_name_normalized})
return predictions
def predict_test_with_ludwig(self):
ludwig_model = LudwigModel.load("results/api_experiment_cifar/model")
predictions = ludwig_model.predict(data_csv="dataset/test.csv")
predictions.to_csv(index=False,
header=True,
path_or_buf="predicted.csv")
print(predictions)
def export_triton(model_path,
output_path="model_repository",
model_name="ludwig_model",
model_version=1,
**kwargs):
"""Exports a model in torchscript format with config for Triton serving.
# Inputs
:param model_path: (str) filepath to pre-trained model.
:param output_path: (str, default: `'model_repository'`) directory to store the
triton models.
:param model_name: (str, default: `'ludwig_model'`) save triton under this name.
:param model_name: (int, default: `1`) save neuropod under this verison.
# Return
:returns: (`None`)
"""
logger.info(f"Model path: {model_path}")
logger.info(f"Output path: {output_path}")
logger.info(f"Model name: {model_name}")
logger.info(f"Model version: {model_version}")
logger.info("\n")
model = LudwigModel.load(model_path)
os.makedirs(output_path, exist_ok=True)
utils_export_triton(model, output_path, model_name, model_version)
logger.info(f"Saved to: {output_path}")
def predict(self, mode='predict', ignore_columns=[]):
predict_dataframe, model_definition, timeseries_cols = self._create_ludwig_dataframe(
mode)
model_definition = self.transaction.hmd['ludwig_data'][
'model_definition']
if len(timeseries_cols) > 0:
predict_dataframe, model_definition = self._translate_df_to_timeseries_format(
predict_dataframe, model_definition, timeseries_cols)
for ignore_col in ignore_columns:
try:
predict_dataframe[ignore_col] = [None] * len(
predict_dataframe[ignore_col])
except:
for date_appendage in ['_year', '_month', '_day']:
predict_dataframe[ignore_col + date_appendage] = [
None
] * len(predict_dataframe[ignore_col + date_appendage])
with disable_console_output(True):
model_dir = self.get_model_dir()
model = LudwigModel.load(model_dir=model_dir)
predictions = model.predict(data_df=predict_dataframe,
gpus=self.get_useable_gpus())
for col_name in predictions:
col_name_normalized = col_name.replace('_predictions', '')
predictions = predictions.rename(
columns={col_name: col_name_normalized})
return predictions
def run_api_experiment(input_features, output_features, dataset, **kwargs):
config = {
'input_features': input_features,
'output_features': output_features,
'combiner': {'type': 'concat', 'fc_size': 14},
'training': {'epochs': 2}
}
model = LudwigModel(config)
output_dir = None
try:
# Training with csv
_, _, output_dir = model.train(
dataset=dataset,
**kwargs
)
model.predict(dataset=dataset)
# Attempt loading saved model, should broadcast successfully
model_dir = os.path.join(output_dir, 'model') if output_dir else None
loaded_model = LudwigModel.load(model_dir)
# Model loading should broadcast weights from coordinator
loaded_weights = loaded_model.model.get_weights()
bcast_weights = hvd.broadcast_object(loaded_weights)
for loaded, bcast in zip(loaded_weights, bcast_weights):
assert np.allclose(loaded, bcast)
finally:
if output_dir:
shutil.rmtree(output_dir, ignore_errors=True)
def run_api_experiment(input_features, output_features, dataset, **kwargs):
config = {
"input_features": input_features,
"output_features": output_features,
"combiner": {"type": "concat", "fc_size": 14},
"training": {"epochs": 2},
}
model = LudwigModel(config)
output_dir = None
try:
# Training with csv
_, _, output_dir = model.train(dataset=dataset, **kwargs)
model.predict(dataset=dataset)
# Attempt loading saved model, should broadcast successfully
model_dir = os.path.join(output_dir, "model") if output_dir else None
loaded_model = LudwigModel.load(model_dir)
# Model loading should broadcast weights from coordinator
loaded_state = loaded_model.model.state_dict()
bcast_state = hvd.broadcast_object(loaded_state)
for loaded, bcast in zip(loaded_state.values(), bcast_state.values()):
assert np.allclose(loaded, bcast)
finally:
if output_dir:
shutil.rmtree(output_dir, ignore_errors=True)
def collect_weights(model_path: str, tensors: List[str], output_directory: str = "results", **kwargs) -> List[str]:
"""Loads a pretrained model and collects weights.
# Inputs
:param model_path: (str) filepath to pre-trained model.
:param tensors: (list, default: `None`) List of tensor names to collect
weights
:param output_directory: (str, default: `'results'`) the directory where
collected weights will be stored.
# Return
:return: (List[str]) list of filepath to `*.npy` files containing
the weights.
"""
logger.info(f"Model path: {model_path}")
logger.info(f"Output path: {output_directory}")
logger.info("\n")
model = LudwigModel.load(model_path)
# collect weights
print_boxed("COLLECT WEIGHTS")
collected_tensors = model.collect_weights(tensors)
# saving
os.makedirs(output_directory, exist_ok=True)
saved_filenames = save_tensors(collected_tensors, output_directory)
logger.info(f"Saved to: {output_directory}")
return saved_filenames
def predict_with_backend(tmpdir,
config,
data_csv_path,
backend,
patch_args=None):
with init_backend(backend):
if backend == "ray":
backend = RAY_BACKEND_CONFIG
backend["processor"]["type"] = "dask"
ludwig_model = LudwigModel(config, backend=backend)
_, _, output_directory = ludwig_model.train(
dataset=data_csv_path,
output_directory=os.path.join(tmpdir, "output"),
)
# Check that metadata JSON saves and loads correctly
ludwig_model = LudwigModel.load(os.path.join(output_directory,
"model"))
if patch_args is not None:
with mock.patch(*patch_args):
preds_df, _ = ludwig_model.predict(dataset=data_csv_path)
else:
preds_df, _ = ludwig_model.predict(dataset=data_csv_path)
return preds_df, ludwig_model
def test_model_loaded_from_old_config_prediction_works(tmpdir):
# Titanic model based on 0.5.3.
old_model_url = "https://predibase-public-us-west-2.s3.us-west-2.amazonaws.com/ludwig_unit_tests/old_model.zip"
old_model_filename = wget.download(old_model_url, tmpdir)
with zipfile.ZipFile(old_model_filename, "r") as zip_ref:
zip_ref.extractall(tmpdir)
example_data = {
"PassengerId": 892,
"Pclass": 3,
"Name": "Kelly, Mr. James",
"Sex": "male",
"Age": 34.5,
"SibSp": 0,
"Parch": 0,
"Ticket": "330911",
"Fare": 7.8292,
"Cabin": None,
"Embarked": "Q",
}
test_set = pd.DataFrame(example_data, index=[0])
ludwig_model = LudwigModel.load(os.path.join(tmpdir, "old_model/model"))
predictions, _ = ludwig_model.predict(dataset=test_set)
assert predictions.to_dict()["Survived_predictions"] == {0: False}
def test_missing_value_prediction(csv_filename):
with tempfile.TemporaryDirectory() as tmpdir:
input_features = [
category_feature(
vocab_size=2,
reduce_input='sum',
preprocessing=dict(missing_value_strategy='fill_with_mode'))
]
output_features = [binary_feature()]
dataset = pd.read_csv(
generate_data(input_features, output_features, csv_filename))
config = {
'input_features': input_features,
'output_features': output_features,
'combiner': {
'type': 'concat',
'fc_size': 14
},
}
model = LudwigModel(config)
_, _, output_dir = model.train(dataset=dataset,
output_directory=tmpdir)
# Set the input column to None, we should be able to replace the missing value with the mode
# from the training set
dataset[input_features[0]['name']] = None
model.predict(dataset=dataset)
model = LudwigModel.load(os.path.join(output_dir, 'model'))
model.predict(dataset=dataset)
def export_neuropod(model_path,
output_path="neuropod",
model_name="neuropod",
**kwargs):
"""Exports a model to Neuropod.
# Inputs
:param model_path: (str) filepath to pre-trained model.
:param output_path: (str, default: `'neuropod'`) directory to store the
neuropod model.
:param model_name: (str, default: `'neuropod'`) save neuropod under this
name.
# Return
:returns: (`None`)
"""
logger.info(f"Model path: {model_path}")
logger.info(f"Output path: {output_path}")
logger.info("\n")
model = LudwigModel.load(model_path)
os.makedirs(output_path, exist_ok=True)
utils_export_neuropod(model, output_path, model_name)
logger.info(f"Saved to: {output_path}")
def export_torchscript(model_path: str,
model_only: bool = False,
output_path: str = "torchscript",
device: Optional[str] = None,
**kwargs) -> None:
"""Exports a model to torchscript.
# Inputs
:param model_path: (str) filepath to pre-trained model.
:param model_only: (bool, default: `False`) If true, scripts and exports the model only.
:param output_path: (str, default: `'torchscript'`) directory to store torchscript
# Return
:returns: (`None`)
"""
logger.info(f"Model path: {model_path}")
logger.info(f"Saving model only: {model_only}")
logger.info(f"Output path: {output_path}")
logger.info("\n")
model = LudwigModel.load(model_path)
os.makedirs(output_path, exist_ok=True)
model.save_torchscript(output_path, model_only=model_only, device=device)
logger.info(f"Saved to: {output_path}")
def test_collect_weights(csv_filename):
output_dir = None
try:
# This will reset the layer numbering scheme TensorFlow uses.
# Otherwise, when we load the model, its layer names will be appended
# with "_1".
tf.keras.backend.reset_uids()
model, output_dir = _train(*_prepare_data(csv_filename))
model_path = os.path.join(output_dir, 'model')
weights = [w for name, w in model.model.collect_weights()]
# 1 for the encoder (embeddings),
# 2 for the decoder classifier (w and b)
assert len(weights) == 3
# Load model from disk to ensure correct weight names
tf.keras.backend.reset_uids()
model_loaded = LudwigModel.load(model_path)
tensor_names = [name for name, w in model_loaded.collect_weights()]
assert len(tensor_names) == 3
tf.keras.backend.reset_uids()
with tempfile.TemporaryDirectory() as output_directory:
filenames = collect_weights(model_path, tensor_names,
output_directory)
assert len(filenames) == 3
for weight, filename in zip(weights, filenames):
saved_weight = np.load(filename)
assert np.allclose(weight.numpy(), saved_weight,
rtol=1.e-4), filename
finally:
if output_dir:
shutil.rmtree(output_dir, ignore_errors=True)
def test_collect_weights(tmpdir, csv_filename):
output_dir = None
try:
model, output_dir = _train(*_prepare_data(csv_filename))
model_path = os.path.join(output_dir, "model")
# 1 for the encoder (embeddings).
# 2 for the decoder classifier (w and b).
weights = [w for _, w in model.model.collect_weights()]
assert len(weights) == 3
# Load model from disk to ensure correct weight names
model_loaded = LudwigModel.load(model_path)
tensor_names = [name for name, w in model_loaded.collect_weights()]
assert len(tensor_names) == 3
filenames = collect_weights(model_path, tensor_names, tmpdir)
assert len(filenames) == 3
for weight, filename in zip(weights, filenames):
saved_weight = np.load(filename)
assert torch.allclose(weight,
torch.from_numpy(saved_weight).to(DEVICE),
rtol=1.0e-4), filename
finally:
if output_dir:
shutil.rmtree(output_dir, ignore_errors=True)
def test_missing_value_prediction(csv_filename):
random.seed(1)
np.random.seed(1)
with tempfile.TemporaryDirectory() as tmpdir:
input_features = [
category_feature(
vocab_size=2,
reduce_input="sum",
preprocessing=dict(missing_value_strategy="fill_with_mode"))
]
output_features = [binary_feature()]
dataset = pd.read_csv(
generate_data(input_features, output_features, csv_filename))
config = {
"input_features": input_features,
"output_features": output_features,
"combiner": {
"type": "concat",
"fc_size": 14
},
}
model = LudwigModel(config)
_, _, output_dir = model.train(dataset=dataset,
output_directory=tmpdir)
# Set the input column to None, we should be able to replace the missing value with the mode
# from the training set
dataset[input_features[0]["name"]] = None
model.predict(dataset=dataset)
model = LudwigModel.load(os.path.join(output_dir, "model"))
model.predict(dataset=dataset)
def predict_cli(model_path,
dataset=None,
data_format=None,
batch_size=128,
skip_save_unprocessed_output=False,
skip_save_predictions=False,
output_directory='results',
gpus=None,
gpu_memory_limit=None,
allow_parallel_threads=True,
use_horovod=None,
logging_level=logging.INFO,
debug=False,
**kwargs):
model = LudwigModel.load(model_path,
logging_level=logging_level,
use_horovod=use_horovod,
gpus=gpus,
gpu_memory_limit=gpu_memory_limit,
allow_parallel_threads=allow_parallel_threads)
model.predict(
dataset=dataset,
data_format=data_format,
batch_size=batch_size,
skip_save_unprocessed_output=skip_save_unprocessed_output,
skip_save_predictions=skip_save_predictions,
output_directory=output_directory,
return_type=dict,
debug=debug,
)
def test_tune_batch_size_and_lr(tmpdir):
with tempfile.TemporaryDirectory() as outdir:
input_features = [sequence_feature(reduce_output="sum")]
output_features = [category_feature(vocab_size=2, reduce_input="sum")]
csv_filename = os.path.join(tmpdir, "training.csv")
data_csv = generate_data(input_features, output_features, csv_filename)
val_csv = shutil.copyfile(data_csv,
os.path.join(tmpdir, "validation.csv"))
test_csv = shutil.copyfile(data_csv, os.path.join(tmpdir, "test.csv"))
config = {
"input_features": input_features,
"output_features": output_features,
"combiner": {
"type": "concat",
"output_size": 14
},
TRAINER: {
"epochs": 2,
"batch_size": "auto",
"eval_batch_size": "auto",
"learning_rate": "auto",
},
}
model = LudwigModel(config, backend=LocalTestBackend())
# check preconditions
assert model.config[TRAINER][BATCH_SIZE] == "auto"
assert model.config[TRAINER][EVAL_BATCH_SIZE] == "auto"
assert model.config[TRAINER][LEARNING_RATE] == "auto"
_, _, output_directory = model.train(training_set=data_csv,
validation_set=val_csv,
test_set=test_csv,
output_directory=outdir)
def check_postconditions(model):
# check batch size
assert model.config[TRAINER][BATCH_SIZE] != "auto"
assert model.config[TRAINER][BATCH_SIZE] > 1
assert model.config[TRAINER][EVAL_BATCH_SIZE] != "auto"
assert model.config[TRAINER][EVAL_BATCH_SIZE] > 1
assert model.config[TRAINER][BATCH_SIZE] == model.config[TRAINER][
EVAL_BATCH_SIZE]
# check learning rate
assert model.config[TRAINER][LEARNING_RATE] != "auto"
assert model.config[TRAINER][LEARNING_RATE] > 0
check_postconditions(model)
model = LudwigModel.load(os.path.join(output_directory, "model"))
# loaded model should retain the tuned params
check_postconditions(model)
def collect_activations(model_path,
layers,
dataset,
data_format=None,
batch_size=128,
output_directory='results',
gpus=None,
gpu_memory_limit=None,
allow_parallel_threads=True,
use_horovod=None,
debug=False,
**kwargs):
"""Uses the pretrained model to collect the tensors corresponding to a
datapoint in the dataset. Saves the tensors to the experiment directory
:param model_path: Is the model from which the tensors will be collected
:param layers: List of layer names we wish to collect the output from
:param data_csv: The CSV filepath which contains the datapoints from which
the tensors are collected
:param data_hdf5: The HDF5 file path if the CSV file path does not exist,
an alternative source of providing the data to the model
:param split: Split type
:param batch_size: Batch size
:param output_directory: Output directory
:param gpus: The total number of GPUs that the model intends to use
:param gpu_memory_limit: (int: default: `None`) maximum memory in MB to allocate
per GPU device.
:param allow_parallel_threads: (bool, default: `True`) allow TensorFlow to use
multithreading parallelism to improve performance at the cost of
determinism.
:param debug: To step through the stack traces and find possible errors
:returns: None
"""
logger.info('Dataset path: {}'.format(dataset))
logger.info('Model path: {}'.format(model_path))
logger.info('Output path: {}'.format(output_directory))
logger.info('\n')
model = LudwigModel.load(model_path,
gpus=gpus,
gpu_memory_limit=gpu_memory_limit,
allow_parallel_threads=allow_parallel_threads,
use_horovod=use_horovod)
# collect activations
print_boxed('COLLECT ACTIVATIONS')
collected_tensors = model.collect_activations(layers,
dataset,
data_format=data_format,
batch_size=batch_size,
debug=debug)
# saving
os.makedirs(output_directory, exist_ok=True)
saved_filenames = save_tensors(collected_tensors, output_directory)
logger.info('Saved to: {0}'.format(output_directory))
return saved_filenames
def run_api_experiment(input_features, output_features, data_csv):
"""
Helper method to avoid code repetition in running an experiment
:param input_features: input schema
:param output_features: output schema
:param data_csv: path to data
:return: None
"""
config = {
"input_features": input_features,
"output_features": output_features,
"combiner": {
"type": "concat",
"fc_size": 14
},
"training": {
"epochs": 2
},
}
model = LudwigModel(config)
output_dir = None
try:
# Training with csv
_, _, output_dir = model.train(
dataset=data_csv,
skip_save_processed_input=True,
skip_save_progress=True,
skip_save_unprocessed_output=True,
)
model.predict(dataset=data_csv)
model_dir = os.path.join(output_dir, "model")
loaded_model = LudwigModel.load(model_dir)
# Necessary before call to get_weights() to materialize the weights
loaded_model.predict(dataset=data_csv)
model_weights = model.model.get_weights()
loaded_weights = loaded_model.model.get_weights()
for model_weight, loaded_weight in zip(model_weights, loaded_weights):
assert np.allclose(model_weight, loaded_weight)
finally:
# Remove results/intermediate data saved to disk
shutil.rmtree(output_dir, ignore_errors=True)
try:
# Training with dataframe
data_df = read_csv(data_csv)
_, _, output_dir = model.train(
dataset=data_df,
skip_save_processed_input=True,
skip_save_progress=True,
skip_save_unprocessed_output=True,
)
model.predict(dataset=data_df)
finally:
shutil.rmtree(output_dir, ignore_errors=True)
def run_test_gbm_number(tmpdir, backend_config):
"""Test that the GBM model can train and predict a numerical output (regression)."""
# Given a dataset with a single input feature and a single output feature,
input_features = [number_feature(), category_feature(reduce_output="sum")]
output_feature = number_feature()
output_features = [output_feature]
csv_filename = os.path.join(tmpdir, "training.csv")
dataset_filename = generate_data(input_features,
output_features,
csv_filename,
num_examples=100)
config = {
MODEL_TYPE: "gbm",
"input_features": input_features,
"output_features": output_features,
TRAINER: {
"num_boost_round": 2
},
}
# When I train a model on the dataset, load the model from the output directory, and
# predict on the dataset
model = LudwigModel(config, backend=backend_config)
model.train(
dataset=dataset_filename,
output_directory=tmpdir,
skip_save_processed_input=True,
skip_save_progress=True,
skip_save_unprocessed_output=True,
skip_save_log=True,
)
model.load(os.path.join(tmpdir, "api_experiment_run", "model"))
preds, _ = model.predict(
dataset=dataset_filename,
output_directory=os.path.join(tmpdir, "predictions"),
)
# Then the predictions should be included in the output
pred_col = preds[output_feature["name"] + "_predictions"]
if backend_config["type"] == "ray":
pred_col = pred_col.compute()
assert pred_col.dtype == float
def predict_test_with_ludwig(self):
ludwig_model = LudwigModel.load(
"results/api_experiment_imdb_review/model")
df = pd.read_table("../../test.tsv", sep='\t')
predictions = ludwig_model.predict(data_df=df)
predictions.to_csv(index=False,
header=True,
path_or_buf="predicted.csv")
print(predictions)
def initialize(cfg):
pth_mdl = os.path.join(cfg['pth_mdls'], cfg['model_to_load'], "model")
if not os.path.isdir(pth_mdl):
raise Exception(
"Could not find the model specified in the models directory: {}".
format(pth_mdl))
global MODL, MMTA, FEAS_IN, FEAS_OUT
# load a model
st = time.time()
print("...loading model from {}".format(pth_mdl))
MODL = LudwigModel.load(pth_mdl)
MODL.set_logging_level(logging.ERROR)
with open(os.path.join(pth_mdl, "train_set_metadata.json")) as f:
MMTA = json.load(f)
print("...loaded model in {:.2f}s".format(time.time() - st))
FEAS_IN = [fea for fea in MODL.model.hyperparameters['input_features']]
FEAS_OUT = [fea for fea in MODL.model.hyperparameters['output_features']]
input_features_desc, output_features_desc = "", ""
for fea in FEAS_IN:
if fea['type'] == "image":
input_features_desc += "\t{}\t({}: {})\n".format(
fea['name'], fea['type'], "({}, {}) {}".format(
fea['width'], fea['height'],
fe.util.chan_count_to_mode(fea['num_channels'])))
else:
input_features_desc += "\t{}\t({})\n".format(
fea['name'], fea['type'])
for fea in FEAS_OUT:
if fea['type'] == "category":
fea['meta'] = MMTA[fea['name']]
output_features_desc += "\t{}\t(category with {} classes)\n".format(
fea['name'], fea['num_classes'])
output_features_desc += "\t\t\t{}\n".format(", ".join(
fea['meta']['idx2str']))
else:
output_features_desc += "\t{}\t({})\n".format(
fea['name'], fea['type'])
#print(output_features)
console_msg = """#################### FRESH EYES ####################
I've just loaded a saved model from {0}
To check that the server is working, go to http://localhost:{1}/
It looks like the model I loaded requires the following inputs to make a prediction:
{2}
Make note of these names, as these particular fields will be required by API calls.
It looks like the following values will result from a prediction.
{3}
Make note of these as well, as these fields will be returned to API calls.
Invoke Cntl+C to stop the server
#################### FRESH EYES ####################
"""
print(
console_msg.format(pth_mdl, cfg['port_num'], input_features_desc,
output_features_desc))
def get_tags(sentence):
tagger = LudwigModel.load('../tagger')
sentence = sentence.strip().lower().translate(
str.maketrans('', '', string.punctuation))
ret = tagger.predict(
data_dict={'utterance': [sentence]})['slots_predictions'].values
tagger.close()
return ret
def run_test_gbm_category(tmpdir, backend_config):
"""Test that the GBM model can train and predict a categorical output (multiclass classification)."""
input_features = [number_feature(), category_feature(reduce_output="sum")]
vocab_size = 3
output_feature = category_feature(vocab_size=vocab_size)
output_features = [output_feature]
csv_filename = os.path.join(tmpdir, "training.csv")
dataset_filename = generate_data(input_features,
output_features,
csv_filename,
num_examples=100)
config = {
MODEL_TYPE: "gbm",
"input_features": input_features,
"output_features": output_features,
TRAINER: {
"num_boost_round": 2
},
}
model = LudwigModel(config, backend=backend_config)
_, _, output_directory = model.train(
dataset=dataset_filename,
output_directory=tmpdir,
skip_save_processed_input=True,
skip_save_progress=True,
skip_save_unprocessed_output=True,
skip_save_log=True,
)
model.load(os.path.join(tmpdir, "api_experiment_run", "model"))
preds, _ = model.predict(dataset=dataset_filename,
output_directory=output_directory)
prob_col = preds[output_feature["name"] + "_probabilities"]
if backend_config["type"] == "ray":
prob_col = prob_col.compute()
assert len(prob_col.iloc[0]) == (vocab_size + 1)
assert prob_col.apply(sum).mean() == pytest.approx(1.0)
def make_inference():
trained_model = LudwigModel.load("results/exp_run/model")
prediction = trained_model.predict(
{"image_path":["D:\programs\python\exampl\hand_recognition\infer/right (24).jpg",
"D:\programs\python\exampl\hand_recognition\infer\left (26).jpg"
],
"label":[-1,-1]
}
)
print(prediction[0]["label_predictions"].values)
def run_test_with_ludwig(model_path, test_file_csv):
"""
Wrap around Ludwig testing.
:param model_path: path in which already trained model is
:param test_file_csv: path to csv file with test data points
:return: predictions from the model and dictionary with stats for human debug
"""
model = LudwigModel.load(model_path)
predictions, test_stats = model.test(data_csv=test_file_csv)
model.close()
return predictions, test_stats
def train(self):
training_dataframe, model_definition = self._create_ludwig_dataframe('train')
if self.transaction.lmd['model_order_by'] is None:
timeseries_cols = []
else:
timeseries_cols = list(map(lambda x: x[0], self.transaction.lmd['model_order_by']))
if len(timeseries_cols) > 0:
training_dataframe, model_definition = self._translate_df_to_timeseries_format(training_dataframe, model_definition, timeseries_cols, 'train')
with disable_ludwig_output(True):
model = LudwigModel(model_definition)
# <---- Ludwig currently broken, since mode can't be initialized without train_set_metadata and train_set_metadata can't be obtained without running train... see this issue for any updates on the matter: https://github.com/uber/ludwig/issues/295
#model.initialize_model(train_set_metadata={})
#train_stats = model.train_online(data_df=training_dataframe) # ??Where to add model_name?? ----> model_name=self.transaction.lmd['name']
if self.transaction.lmd['rebuild_model'] is True:
train_stats = model.train(data_df=training_dataframe, model_name=self.transaction.lmd['name'], skip_save_model=True)
else:
model = LudwigModel.load(self.transaction.lmd['ludwig_data']['ludwig_save_path'])
train_stats = model.train(data_df=training_dataframe, model_name=self.transaction.lmd['name'], skip_save_model=True)
#,model_load_path=self.transaction.lmd['ludwig_data']['ludwig_save_path'])
for k in train_stats['train']:
if k not in self.transaction.lmd['model_accuracy']['train']:
self.transaction.lmd['model_accuracy']['train'][k] = []
self.transaction.lmd['model_accuracy']['test'][k] = []
elif k is not 'combined':
# We should be adding the accuracy here but we only have it for combined, so, for now use that, will only affect multi-output scenarios anyway
pass
else:
self.transaction.lmd['model_accuracy']['train'][k].extend(train_stats['train'][k]['accuracy'])
self.transaction.lmd['model_accuracy']['test'][k].extend(train_stats['test'][k]['accuracy'])
'''
@ TRAIN ONLINE BIT That's not working
model = LudwigModel.load(self.transaction.lmd['ludwig_data']['ludwig_save_path'])
for i in range(0,100):
train_stats = model.train_online(data_df=training_dataframe)
# The resulting train_stats are "None"... wonderful -_-
'''
ludwig_model_savepath = os.path.join(CONFIG.MINDSDB_STORAGE_PATH, self.transaction.lmd['name'] + '_ludwig_data')
model.save(ludwig_model_savepath)
model.close()
self.transaction.lmd['ludwig_data'] = {'ludwig_save_path': ludwig_model_savepath}
self.transaction.hmd['ludwig_data'] = {'model_definition': model_definition}
def do_predictions(prediction_dictionary, target_folder):
# reload the model
model = LudwigModel.load(target_folder)
# get predictions
predictions = model.predict(data_dict=prediction_dictionary)
for input_q, input_skus, output in zip(prediction_dictionary['query'],
prediction_dictionary['skus_in_session'],
predictions['path_predictions']):
print("\nInput: <{}, {}>, predicted path: {}".format(input_q,
input_skus,
' > '.join([o for o in output if o != '<PAD>'])
))
return
def predict_test_with_ludwig(self):
ludwig_model = LudwigModel.load(
"results/api_experiment_cancer_diagnosis/model")
df = pd.read_csv("../../processed_data/test.csv")
df.rename(columns={
"concave points_se": "concave_points_se",
"concave points_worst": "concave_points_worst"
},
inplace=True)
predictions = ludwig_model.predict(data_df=df, )
predictions.to_csv(index=False,
header=True,
path_or_buf="predicted.csv")
print(predictions)