提交 f4f5f3f2 编写于 作者: Z zhhsplendid

Add test_ptb_lm_v2.py, test=develop

上级 5c0b44d0
......@@ -279,7 +279,7 @@ def train(place):
speed))
avg_batch_time = time.time()
return out_loss, last_hidden.numpy(), last_cell.numpy()
return out_loss, last_hidden.numpy(), last_cell.numpy()
def train_dygraph(place):
......
# Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
#
# 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 __future__ import absolute_import, division, print_function
import logging
import time
import unittest
import numpy as np
import paddle
PRINT_STEP = 20
SEED = 2020
program_translator = paddle.fluid.dygraph.dygraph_to_static.ProgramTranslator()
class SimpleLSTMRNN(paddle.fluid.Layer):
def __init__(self,
hidden_size,
num_steps,
num_layers=2,
init_scale=0.1,
dropout=None):
super(SimpleLSTMRNN, self).__init__()
self._hidden_size = hidden_size
self._num_layers = num_layers
self._init_scale = init_scale
self._dropout = dropout
self._num_steps = num_steps
self.cell_array = []
self.hidden_array = []
self.weight_1_arr = []
self.weight_2_arr = []
self.bias_arr = []
self.mask_array = []
for i in range(self._num_layers):
weight_1 = self.create_parameter(
attr=paddle.ParamAttr(initializer=paddle.nn.initializer.Uniform(
low=-self._init_scale, high=self._init_scale)),
shape=[self._hidden_size * 2, self._hidden_size * 4],
dtype="float32",
default_initializer=paddle.nn.initializer.Uniform(
low=-self._init_scale, high=self._init_scale))
self.weight_1_arr.append(self.add_parameter('w_%d' % i, weight_1))
bias_1 = self.create_parameter(
attr=paddle.ParamAttr(initializer=paddle.nn.initializer.Uniform(
low=-self._init_scale, high=self._init_scale)),
shape=[self._hidden_size * 4],
dtype="float32",
default_initializer=paddle.nn.initializer.Constant(0.0))
self.bias_arr.append(self.add_parameter('b_%d' % i, bias_1))
def forward(self, input_embedding, init_hidden=None, init_cell=None):
cell_array = []
hidden_array = []
for i in range(self._num_layers):
hidden_array.append(init_hidden[i])
cell_array.append(init_cell[i])
res = []
for index in range(self._num_steps):
step_input = input_embedding[:, index, :]
for k in range(self._num_layers):
pre_hidden = hidden_array[k]
pre_cell = cell_array[k]
weight_1 = self.weight_1_arr[k]
bias = self.bias_arr[k]
nn = paddle.concat(x=[step_input, pre_hidden], axis=1)
gate_input = paddle.matmul(x=nn, y=weight_1)
gate_input = paddle.add(x=gate_input, y=bias)
i, j, f, o = paddle.split(
x=gate_input, num_or_sections=4, axis=-1)
c = pre_cell * paddle.nn.functional.sigmoid(
f) + paddle.nn.functional.sigmoid(i) * paddle.tanh(j)
m = paddle.tanh(c) * paddle.nn.functional.sigmoid(o)
hidden_array[k] = m
cell_array[k] = c
step_input = m
if self._dropout is not None and self._dropout > 0.0:
step_input = paddle.fluid.layers.dropout(
step_input,
dropout_prob=self._dropout,
dropout_implementation='upscale_in_train')
res.append(step_input)
real_res = paddle.concat(x=res, axis=1)
real_res = paddle.fluid.layers.reshape(
real_res, [-1, self._num_steps, self._hidden_size])
last_hidden = paddle.concat(x=hidden_array, axis=1)
last_hidden = paddle.fluid.layers.reshape(
last_hidden, shape=[-1, self._num_layers, self._hidden_size])
last_hidden = paddle.transpose(x=last_hidden, perm=[1, 0, 2])
last_cell = paddle.concat(x=cell_array, axis=1)
last_cell = paddle.fluid.layers.reshape(
last_cell, shape=[-1, self._num_layers, self._hidden_size])
last_cell = paddle.transpose(x=last_cell, perm=[1, 0, 2])
return real_res, last_hidden, last_cell
class PtbModel(paddle.fluid.Layer):
def __init__(self,
hidden_size,
vocab_size,
num_layers=2,
num_steps=20,
init_scale=0.1,
dropout=None):
super(PtbModel, self).__init__()
self.hidden_size = hidden_size
self.vocab_size = vocab_size
self.init_scale = init_scale
self.num_layers = num_layers
self.num_steps = num_steps
self.dropout = dropout
self.simple_lstm_rnn = SimpleLSTMRNN(
hidden_size,
num_steps,
num_layers=num_layers,
init_scale=init_scale,
dropout=dropout)
self.embedding = paddle.fluid.dygraph.nn.Embedding(
size=[vocab_size, hidden_size],
dtype='float32',
is_sparse=False,
param_attr=paddle.ParamAttr(
name='embedding_para',
initializer=paddle.nn.initializer.Uniform(
low=-init_scale, high=init_scale)))
self.softmax_weight = self.create_parameter(
attr=paddle.ParamAttr(),
shape=[self.hidden_size, self.vocab_size],
dtype="float32",
default_initializer=paddle.nn.initializer.Uniform(
low=-self.init_scale, high=self.init_scale))
self.softmax_bias = self.create_parameter(
attr=paddle.ParamAttr(),
shape=[self.vocab_size],
dtype="float32",
default_initializer=paddle.nn.initializer.Uniform(
low=-self.init_scale, high=self.init_scale))
def build_once(self, input, label, init_hidden, init_cell):
pass
@paddle.fluid.dygraph.jit.declarative
def forward(self, input, label, init_hidden, init_cell):
init_h = paddle.fluid.layers.reshape(
init_hidden, shape=[self.num_layers, -1, self.hidden_size])
init_c = paddle.fluid.layers.reshape(
init_cell, shape=[self.num_layers, -1, self.hidden_size])
x_emb = self.embedding(input)
x_emb = paddle.fluid.layers.reshape(
x_emb, shape=[-1, self.num_steps, self.hidden_size])
if self.dropout is not None and self.dropout > 0.0:
x_emb = paddle.fluid.layers.dropout(
x_emb,
dropout_prob=self.dropout,
dropout_implementation='upscale_in_train')
rnn_out, last_hidden, last_cell = self.simple_lstm_rnn(x_emb, init_h,
init_c)
projection = paddle.matmul(x=rnn_out, y=self.softmax_weight)
projection = paddle.add(x=projection, y=self.softmax_bias)
loss = paddle.nn.functional.softmax_with_cross_entropy(
logits=projection, label=label, soft_label=False)
loss = paddle.fluid.layers.reshape(loss, shape=[-1, self.num_steps])
loss = paddle.reduce_mean(loss, dim=[0])
loss = paddle.reduce_sum(loss)
return loss, last_hidden, last_cell
def debug_emb(self):
np.save("emb_grad", self.x_emb.gradient())
def train(place):
num_layers = 1
batch_size = 4
hidden_size = 10
num_steps = 3
init_scale = 0.1
max_epoch = 1
dropout = 0.0
vocab_size = 1000
batch_num = 200
paddle.disable_static(place)
paddle.manual_seed(SEED)
paddle.framework.random._manual_program_seed(SEED)
ptb_model = PtbModel(
hidden_size=hidden_size,
vocab_size=vocab_size,
num_layers=num_layers,
num_steps=num_steps,
init_scale=init_scale,
dropout=dropout)
sgd = paddle.optimizer.SGD(learning_rate=1e-3,
parameters=ptb_model.parameters())
for epoch_id in range(max_epoch):
total_loss = 0.0
iters = 0.0
total_sample = 0
init_hidden_data = np.zeros(
(num_layers, batch_size, hidden_size), dtype='float32')
init_cell_data = np.zeros(
(num_layers, batch_size, hidden_size), dtype='float32')
init_hidden = paddle.to_tensor(
data=init_hidden_data, dtype=None, place=None, stop_gradient=True)
init_cell = paddle.to_tensor(
data=init_cell_data, dtype=None, place=None, stop_gradient=True)
for step_id in range(batch_num):
x_data = np.arange(12).reshape(4, 3).astype('int64')
y_data = np.arange(1, 13).reshape(4, 3).astype('int64')
y_data = y_data.reshape((-1, 1))
x_data = x_data.reshape((-1, num_steps, 1))
y_data = y_data.reshape((-1, num_steps, 1))
x = paddle.to_tensor(
data=x_data, dtype=None, place=None, stop_gradient=True)
y = paddle.to_tensor(
data=y_data, dtype=None, place=None, stop_gradient=True)
dy_loss, last_hidden, last_cell = ptb_model(x, y, init_hidden,
init_cell)
out_loss = dy_loss.numpy()
dy_loss.backward()
sgd.minimize(dy_loss)
ptb_model.clear_gradients()
total_loss += out_loss
iters += num_steps
total_sample += 1
if step_id % PRINT_STEP == 0:
if step_id == 0:
logging.info("epoch %d | step %d, loss %0.3f" %
(epoch_id, step_id, total_loss / total_sample))
avg_batch_time = time.time()
else:
speed = PRINT_STEP / (time.time() - avg_batch_time)
logging.info(
"epoch %d | step %d, loss %0.3f, speed %.3f steps/s" %
(epoch_id, step_id, total_loss / total_sample, speed))
avg_batch_time = time.time()
ret = out_loss, last_hidden.numpy(), last_cell.numpy()
paddle.enable_static()
return ret
def train_dygraph(place):
program_translator.enable(False)
return train(place)
def train_static(place):
program_translator.enable(True)
return train(place)
class TestPtb(unittest.TestCase):
def setUp(self):
self.place = paddle.CUDAPlace(0) if paddle.fluid.is_compiled_with_cuda() \
else paddle.CPUPlace()
def test_check_result(self):
loss_1, hidden_1, cell_1 = train_static(self.place)
loss_2, hidden_2, cell_2 = train_dygraph(self.place)
self.assertTrue(
np.allclose(loss_1, loss_2),
msg="static loss: {} \ndygraph loss: {}".format(loss_1, loss_2))
self.assertTrue(
np.allclose(hidden_1, hidden_2),
msg="static hidden: {} \ndygraph acc1: {}".format(hidden_1,
hidden_2))
self.assertTrue(
np.allclose(cell_1, cell_2),
msg="static cell: {} \ndygraph cell: {}".format(cell_1, cell_2))
if __name__ == '__main__':
unittest.main()
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