def get_relevance_model(self,
feature_layer_keys_to_fns={}) -> RelevanceModel:
"""
Creates RelevanceModel suited for classification use-case.
NOTE: Override this method to create custom loss, scorer, model objects.
"""
# Define interaction model
interaction_model: InteractionModel = UnivariateInteractionModel(
feature_config=self.feature_config,
feature_layer_keys_to_fns=feature_layer_keys_to_fns,
tfrecord_type=self.tfrecord_type,
file_io=self.file_io)
# Define loss object from loss key
loss: RelevanceLossBase = categorical_cross_entropy.get_loss(
loss_key=self.loss_key)
# Define scorer
scorer: ScorerBase = RelevanceScorer.from_model_config_file(
model_config_file=self.model_config_file,
interaction_model=interaction_model,
loss=loss,
output_name=self.args.output_name,
logger=self.logger,
file_io=self.file_io,
)
# Define metrics objects from metrics keys
metrics: List[Union[Type[Metric], str]] = [
metric_factory.get_metric(metric_key=metric_key)
for metric_key in self.metrics_keys
]
# Define optimizer
optimizer: Optimizer = get_optimizer(
optimizer_key=self.optimizer_key,
learning_rate=self.args.learning_rate,
learning_rate_decay=self.args.learning_rate_decay,
learning_rate_decay_steps=self.args.learning_rate_decay_steps,
gradient_clip_value=self.args.gradient_clip_value,
)
# Combine the above to define a RelevanceModel
relevance_model: RelevanceModel = RelevanceModel(
feature_config=self.feature_config,
scorer=scorer,
metrics=metrics,
optimizer=optimizer,
tfrecord_type=self.tfrecord_type,
model_file=self.args.model_file,
compile_keras_model=self.args.compile_keras_model,
output_name=self.args.output_name,
file_io=self.local_io,
logger=self.logger,
)
return relevance_model
def get_ranking_model(
self,
loss_key: str,
metrics_keys: List,
feature_config: FeatureConfig,
feature_layer_keys_to_fns={},
) -> RelevanceModel:
"""
Creates RankingModel
NOTE: Override this method to create custom loss, scorer, model objects
"""
# Define interaction model
interaction_model: InteractionModel = UnivariateInteractionModel(
feature_config=feature_config,
feature_layer_keys_to_fns=feature_layer_keys_to_fns,
tfrecord_type=self.args.tfrecord_type,
max_sequence_size=self.args.max_sequence_size,
)
# Define loss object from loss key
loss: RelevanceLossBase = loss_factory.get_loss(
loss_key=loss_key, scoring_type=self.args.scoring_type)
# Define scorer
scorer: ScorerBase = RelevanceScorer.from_model_config_file(
model_config_file=self.args.model_config,
interaction_model=interaction_model,
loss=loss,
output_name=self.args.output_name,
)
# Define metrics objects from metrics keys
metrics: List[Union[Type[Metric], str]] = [
metric_factory.get_metric(metric_key=metric_key)
for metric_key in metrics_keys
]
# Define optimizer
optimizer: Optimizer = get_optimizer(
optimizer_key=self.args.optimizer_key,
learning_rate=self.args.learning_rate,
learning_rate_decay=self.args.learning_rate_decay,
learning_rate_decay_steps=self.args.learning_rate_decay_steps,
gradient_clip_value=self.args.gradient_clip_value,
)
# Combine the above to define a RelevanceModel
relevance_model: RelevanceModel = RankingModel(
feature_config=feature_config,
tfrecord_type=self.args.tfrecord_type,
scorer=scorer,
metrics=metrics,
optimizer=optimizer,
model_file=self.args.model_file,
compile_keras_model=self.args.compile_keras_model,
output_name=self.args.output_name,
logger=self.logger,
)
return relevance_model
def get_relevance_model(self,
feature_layer_keys_to_fns={}) -> RelevanceModel:
"""
Creates a RelevanceModel that can be used for training and evaluating
Parameters
----------
feature_layer_keys_to_fns : dict of (str, function)
dictionary of function names mapped to tensorflow compatible
function definitions that can now be used in the InteractionModel
as a feature function to transform input features
Returns
-------
`RelevanceModel`
RelevanceModel that can be used for training and evaluating
a classification model
Notes
-----
Override this method to create custom loss, scorer, model objects
"""
# Define interaction model
interaction_model: InteractionModel = UnivariateInteractionModel(
feature_config=self.feature_config,
feature_layer_keys_to_fns=feature_layer_keys_to_fns,
tfrecord_type=self.tfrecord_type,
file_io=self.file_io,
)
# Define loss object from loss key
loss: RelevanceLossBase = categorical_cross_entropy.get_loss(
loss_key=self.loss_key)
# Define scorer
scorer: ScorerBase = RelevanceScorer.from_model_config_file(
model_config_file=self.model_config_file,
feature_config=self.feature_config,
interaction_model=interaction_model,
loss=loss,
output_name=self.args.output_name,
logger=self.logger,
file_io=self.file_io,
)
# Define metrics objects from metrics keys
metrics: List[Union[Type[Metric], str]] = [
metrics_factory.get_metric(metric_key=metric_key)
for metric_key in self.metrics_keys
]
# Define optimizer
optimizer: Optimizer = get_optimizer(
optimizer_key=self.optimizer_key,
learning_rate=self.args.learning_rate,
learning_rate_decay=self.args.learning_rate_decay,
learning_rate_decay_steps=self.args.learning_rate_decay_steps,
gradient_clip_value=self.args.gradient_clip_value,
)
# Combine the above to define a RelevanceModel
relevance_model: RelevanceModel = RelevanceModel(
feature_config=self.feature_config,
scorer=scorer,
metrics=metrics,
optimizer=optimizer,
tfrecord_type=self.tfrecord_type,
model_file=self.args.model_file,
initialize_layers_dict=ast.literal_eval(
self.args.initialize_layers_dict),
freeze_layers_list=ast.literal_eval(self.args.freeze_layers_list),
compile_keras_model=self.args.compile_keras_model,
output_name=self.args.output_name,
file_io=self.local_io,
logger=self.logger,
)
return relevance_model