def predict_coreness(title, abstract):
"""
Predicts class-wise probabilities given the title and abstract.
"""
text = title + ' <ENDTITLE> ' + abstract
categories = ['rejected', 'non_core', 'core']
try:
classifier = Classifier(
data_itos_path=path_for('data_itos'),
number_of_classes=3,
cuda_device_id=current_app.config['CLASSIFIER_CUDA_DEVICE_ID'])
except IOError as error:
raise IOError('Data ITOS not found.') from error
try:
classifier.load_trained_classifier_weights(
path_for('trained_classifier'))
except IOError as error:
raise IOError(
'Could not load the trained classifier weights.') from error
class_probabilities = classifier.predict(text)
assert len(class_probabilities) == 3
predicted_class = categories[np.argmax(class_probabilities)]
output_dict = {'prediction': predicted_class}
output_dict['scores'] = dict(zip(categories, class_probabilities))
return output_dict
def test_predict_coreness(trained_pipeline):
assert path_for('data_itos').exists()
assert path_for('trained_classifier').exists()
output_dict = predict_coreness(title=TEST_TITLE, abstract=TEST_ABSTRACT)
assert set(output_dict.keys()) == {'prediction', 'scores'}
assert output_dict['prediction'] in {'rejected', 'non_core', 'core'}
assert set(
output_dict['scores'].keys()) == {'rejected', 'non_core', 'core'}
assert isclose(output_dict['scores']['rejected'] +
output_dict['scores']['non_core'] +
output_dict['scores']['core'],
1.0,
abs_tol=1e-2)
def trained_pipeline(app, tmp_path_factory):
app.config['CLASSIFIER_BASE_PATH'] = tmp_path_factory
create_directories()
shutil.copy(
Path(__file__).parent / 'fixtures' / 'inspire_test_data.df',
path_for('dataframe'))
train()
def preprocess_and_save_data():
"""
Prepares the data for training.
"""
try:
split_and_save_data_for_language_model_and_classifier(
dataframe_path=path_for('dataframe'),
language_model_data_dir=path_for('language_model_data'),
classifier_data_dir=path_for('classifier_data'),
val_fraction=current_app.
config['CLASSIFIER_VALIDATION_DATA_FRACTION'])
except IOError as error:
raise IOError(
'Training dataframe not found. Make sure the file is present in the right directory. '
'Please use the path specified in config.py for CLASSIFIER_DATAFRAME_PATH relative to the '
'CLASSIFIER_BASE_PATH.') from error
try:
generate_and_save_language_model_tokens(
language_model_data_dir=path_for('language_model_data'))
except IOError as error:
raise IOError(
'Language Model data directory does not exist.') from error
try:
map_and_save_tokens_to_ids_for_language_model(
language_model_data_dir=path_for('language_model_data'),
data_itos_path=path_for('data_itos'),
max_vocab_size=current_app.
config['CLASSIFIER_MAXIMUM_VOCABULARY_SIZE'],
minimum_frequency=current_app.
config['CLASSIFIER_MINIMUM_WORD_FREQUENCY'])
except IOError as error:
raise IOError(
'Language Model data directory or the data directory do not exist.'
) from error
try:
generate_and_save_classifier_tokens(
classifier_data_dir=path_for('classifier_data'))
except IOError as error:
raise IOError('Classifier data directory does not exist.') from error
try:
map_and_save_tokens_to_ids_for_classifier(
classifier_data_dir=path_for('classifier_data'),
data_itos_path=path_for('data_itos'))
except IOError as error:
raise IOError(
'Classifier data directory or the data ITOS does not exist.'
) from error
def create_directories():
"""Create the project data and model directories"""
path_for('classifier_data').mkdir(parents=True, exist_ok=True)
path_for('language_model_data').mkdir(parents=True, exist_ok=True)
path_for('classifier_model').mkdir(parents=True, exist_ok=True)
(path_for('language_model') / 'wikitext_103').mkdir(parents=True,
exist_ok=True)
def train_and_save_classifier():
"""
Trains the classifier on our dataset and save the weights.
"""
try:
classifier = Classifier(
data_itos_path=path_for('data_itos'),
number_of_classes=3,
cuda_device_id=current_app.config['CLASSIFIER_CUDA_DEVICE_ID'])
except IOError as error:
raise IOError('Data ITOS not found.') from error
try:
classifier.load_training_and_validation_data(
training_data_ids_path=path_for('classifier_data') /
'training_token_ids.npy',
training_data_labels_path=path_for('classifier_data') /
'training_labels.npy',
validation_data_ids_path=path_for('classifier_data') /
'validation_token_ids.npy',
validation_data_labels_path=path_for('classifier_data') /
'validation_labels.npy',
classifier_data_dir=path_for('classifier_data'),
batch_size=current_app.config['CLASSIFIER_CLASSIFIER_BATCH_SIZE'])
except IOError as error:
raise IOError('Training and Validation data for Classifier not found.'
) from error
classifier.initialize_learner()
try:
classifier.load_finetuned_language_model_weights(
finetuned_language_model_encoder_path=path_for(
'finetuned_language_model_encoder'))
except IOError as error:
raise IOError(
'Finetuned Language Model Encoder does not exist.') from error
try:
classifier.train(
trained_classifier_save_path=path_for('trained_classifier'),
cycle_length=current_app.
config['CLASSIFIER_CLASSIFIER_CYCLE_LENGTH'])
except IOError as error:
raise IOError('Unable to save the trained classifier.') from error
def test_preprocess_and_save_data(app, trained_pipeline):
dataframe = pd.read_pickle(path_for('dataframe'))
# Test core/preprocessor:split_and_save_data_for_language_model_and_classifier
classifier_training_csv = pd.read_csv(
path_for('classifier_data') / 'training_data.csv')
assert isclose(len(classifier_training_csv),
len(dataframe) *
(1 - app.config['CLASSIFIER_VALIDATION_DATA_FRACTION']),
abs_tol=1)
classifier_validation_csv = pd.read_csv(
path_for('classifier_data') / 'validation_data.csv')
assert isclose(len(classifier_validation_csv),
len(dataframe) *
app.config['CLASSIFIER_VALIDATION_DATA_FRACTION'],
abs_tol=1)
language_model_training_csv = pd.read_csv(
path_for('language_model_data') / 'training_data.csv')
assert isclose(len(language_model_training_csv),
len(dataframe) *
(1 - app.config['CLASSIFIER_VALIDATION_DATA_FRACTION']),
abs_tol=1)
language_model_validation_csv = pd.read_csv(
path_for('language_model_data') / 'validation_data.csv')
assert isclose(len(language_model_validation_csv),
len(dataframe) *
app.config['CLASSIFIER_VALIDATION_DATA_FRACTION'],
abs_tol=1)
# Test core/preprocessor:generate_and_save_language_model_tokens
language_model_training_tokens = np.load(
path_for('language_model_data') / 'training_tokens.npy')
assert isclose(len(language_model_training_tokens),
len(dataframe) *
(1 - app.config['CLASSIFIER_VALIDATION_DATA_FRACTION']),
abs_tol=1)
language_model_validation_tokens = np.load(
path_for('language_model_data') / 'validation_tokens.npy')
assert isclose(len(language_model_validation_tokens),
len(dataframe) *
app.config['CLASSIFIER_VALIDATION_DATA_FRACTION'],
abs_tol=1)
language_model_training_labels = np.load(
path_for('language_model_data') / 'training_labels.npy')
assert isclose(len(language_model_training_labels),
len(dataframe) *
(1 - app.config['CLASSIFIER_VALIDATION_DATA_FRACTION']),
abs_tol=1)
language_model_validation_labels = np.load(
path_for('language_model_data') / 'validation_labels.npy')
assert isclose(len(language_model_validation_labels),
len(dataframe) *
app.config['CLASSIFIER_VALIDATION_DATA_FRACTION'],
abs_tol=1)
# Test core/preprocessor:map_and_save_tokens_to_ids_for_language_model
data_itos = pickle.load(open(path_for('data_itos'), 'rb'))
assert len(
data_itos) == app.config['CLASSIFIER_MAXIMUM_VOCABULARY_SIZE'] + 2
language_model_training_ids = np.load(
path_for('language_model_data') / 'training_token_ids.npy')
assert isclose(len(language_model_training_ids),
len(dataframe) *
(1 - app.config['CLASSIFIER_VALIDATION_DATA_FRACTION']),
abs_tol=1)
language_model_validation_ids = np.load(
path_for('language_model_data') / 'validation_token_ids.npy')
assert isclose(len(language_model_validation_ids),
len(dataframe) *
app.config['CLASSIFIER_VALIDATION_DATA_FRACTION'],
abs_tol=1)
# Test core/preprocessor:generate_and_save_classifier_tokens
classifier_training_tokens = np.load(
path_for('classifier_data') / 'training_tokens.npy')
assert isclose(len(classifier_training_tokens),
len(dataframe) *
(1 - app.config['CLASSIFIER_VALIDATION_DATA_FRACTION']),
abs_tol=1)
classifier_validation_tokens = np.load(
path_for('classifier_data') / 'validation_tokens.npy')
assert isclose(len(classifier_validation_tokens),
len(dataframe) *
app.config['CLASSIFIER_VALIDATION_DATA_FRACTION'],
abs_tol=1)
classifier_training_labels = np.load(
path_for('classifier_data') / 'training_labels.npy')
assert isclose(len(classifier_training_labels),
len(dataframe) *
(1 - app.config['CLASSIFIER_VALIDATION_DATA_FRACTION']),
abs_tol=1)
classifier_validation_labels = np.load(
path_for('classifier_data') / 'validation_labels.npy')
assert isclose(len(classifier_validation_labels),
len(dataframe) *
app.config['CLASSIFIER_VALIDATION_DATA_FRACTION'],
abs_tol=1)
# Test core/preprocessor:map_and_save_tokens_to_ids_for_classifier
classifier_training_ids = np.load(
path_for('classifier_data') / 'training_token_ids.npy')
assert isclose(len(classifier_training_ids),
len(dataframe) *
(1 - app.config['CLASSIFIER_VALIDATION_DATA_FRACTION']),
abs_tol=1)
classifier_validation_ids = np.load(
path_for('classifier_data') / 'validation_token_ids.npy')
assert isclose(len(classifier_validation_ids),
len(dataframe) *
app.config['CLASSIFIER_VALIDATION_DATA_FRACTION'],
abs_tol=1)
def test_create_directories(trained_pipeline):
assert path_for('classifier_data').exists()
assert path_for('language_model_data').exists()
assert path_for('classifier_model').exists()
assert (path_for('language_model') / 'wikitext_103').exists()
def test_train_and_save_classifier(trained_pipeline):
assert path_for('trained_classifier').exists()
def test_finetune_and_save_language_model(trained_pipeline):
assert path_for('pretrained_language_model').exists()
assert path_for('wikitext103_itos').exists()
assert path_for('finetuned_language_model_encoder').exists()
def finetune_and_save_language_model():
"""
Finetunes the pretrained (on wikitext103) language model on our dataset.
"""
try:
language_model = LanguageModel(
training_data_ids_path=path_for('language_model_data') /
'training_token_ids.npy',
validation_data_ids_path=path_for('language_model_data') /
'validation_token_ids.npy',
language_model_model_dir=path_for('language_model_data'),
data_itos_path=path_for('data_itos'),
cuda_device_id=current_app.config['CLASSIFIER_CUDA_DEVICE_ID'],
batch_size=current_app.
config['CLASSIFIER_LANGUAGE_MODEL_BATCH_SIZE'])
except IOError as error:
raise IOError(
'Training files, language model data directory, or data ITOS do not exist.'
) from error
if not path_for('pretrained_language_model').exists():
wikitext103_language_model_response = requests.get(
current_app.config['CLASSIFIER_WIKITEXT103_LANGUAGE_MODEL_URL'],
allow_redirects=True)
wikitext103_language_model_response.raise_for_status()
with open(path_for('pretrained_language_model'), 'wb') as fd:
fd.write(wikitext103_language_model_response.content)
if not path_for('wikitext103_itos').exists():
wikitext103_itos_response = requests.get(
current_app.config['CLASSIFIER_WIKITEXT103_ITOS_URL'],
allow_redirects=True)
wikitext103_itos_response.raise_for_status()
with open(path_for('wikitext103_itos'), 'wb') as fd:
fd.write(wikitext103_itos_response.content)
try:
language_model.load_pretrained_language_model_weights(
pretrained_language_model_path=path_for(
'pretrained_language_model'),
wikitext103_itos_path=path_for('wikitext103_itos'))
except IOError as error:
raise IOError(
'Wikitext103 pretrained language model and Wikitext103 ITOS do not exist.'
) from error
try:
language_model.train(
finetuned_language_model_encoder_save_path=path_for(
'finetuned_language_model_encoder'),
cycle_length=current_app.
config['CLASSIFIER_LANGUAGE_MODEL_CYCLE_LENGTH'])
except IOError as error:
raise IOError(
'Unable to save the finetuned language model. Please check that the language model data directory '
'exists.') from error