#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from paddle.trainer_config_helpers import *

settings(learning_rate=1e-4, batch_size=1000)

data_1 = data_layer(name='data_a', size=100)
data_2 = data_layer(name='data_b', size=100)

mixed_param = ParamAttr(name='mixed_param')

gru_param = ParamAttr(name='gru_param')
gru_bias = ParamAttr(name='gru_bias', initial_mean=0., initial_std=0.)

gru1 = simple_gru(
    input=data_1,
    size=200,
    mixed_param_attr=mixed_param,
    mixed_bias_param_attr=False,
    gru_bias_attr=gru_bias,
    gru_param_attr=gru_param)

gru2 = simple_gru(
    input=data_2,
    size=200,
    mixed_param_attr=mixed_param,
    mixed_bias_param_attr=False,
    gru_bias_attr=gru_bias,
    gru_param_attr=gru_param)

softmax_param = ParamAttr(name='softmax_param')

predict = fc_layer(
    input=[last_seq(input=gru1), last_seq(input=gru2)],
    size=10,
    param_attr=[softmax_param, softmax_param],
    bias_attr=False,
    act=SoftmaxActivation())
outputs(
    classification_cost(
        input=predict, label=data_layer(
            name='label', size=10)))