# encoding: utf-8
# author: BrikerMan
# contact: eliyar917@gmail.com
# blog: https://eliyar.biz
# file: bi_gru_model.py
# time: 4:37 下午
from typing import Dict, Any
from tensorflow import keras
from kashgari.layers import L
from kashgari.tasks.classification.abc_model import ABCClassificationModel
[docs]class BiGRU_Model(ABCClassificationModel):
[docs] @classmethod
def default_hyper_parameters(cls) -> Dict[str, Dict[str, Any]]:
return {
'layer_bi_gru': {
'units': 128,
'return_sequences': False
},
'layer_output': {
}
}
[docs] def build_model_arc(self) -> None:
output_dim = self.label_processor.vocab_size
config = self.hyper_parameters
embed_model = self.embedding.embed_model
layer_stack = [
L.Bidirectional(L.GRU(**config['layer_bi_gru'])),
L.Dense(output_dim, **config['layer_output']),
self._activation_layer()
]
tensor = embed_model.output
for layer in layer_stack:
tensor = layer(tensor)
self.tf_model = keras.Model(embed_model.inputs, tensor)