opus/dnn/training_tf2/parameters.py
janpbuethe 920300c546 Add lpc weighting and model parameter handling
Model now stores LPC gamma, look-ahead, and end-to-end.
Parameters aren't quite reliable yet, YMMV
2022-09-06 23:14:39 -04:00

29 lines
1.1 KiB
Python

""" module for handling extra model parameters for tf.keras models """
import tensorflow as tf
def set_parameter(model, parameter_name, parameter_value, dtype='float32'):
""" stores parameter_value as non-trainable weight with name parameter_name:0 """
weights = [weight for weight in model.weights if weight.name == (parameter_name + ":0")]
if len(weights) == 0:
model.add_weight(parameter_name, trainable=False, initializer=tf.keras.initializers.Constant(parameter_value), dtype=dtype)
elif len(weights) == 1:
weights[0].assign(parameter_value)
else:
raise ValueError(f"more than one weight starting with {parameter_name}:0 in model")
def get_parameter(model, parameter_name, default=None):
""" returns parameter value if parameter is present in model and otherwise default """
weights = [weight for weight in model.weights if weight.name == (parameter_name + ":0")]
if len(weights) == 0:
return default
elif len(weights) > 1:
raise ValueError(f"more than one weight starting with {parameter_name}:0 in model")
else:
return weights[0].numpy().item()