提交 dd2cbb63 编写于 作者: X xuwei06

Parameter initializer in V2 API

User can provide an initializer in ParamAttr. The initializer will be called when at parameters.create().
上级 91f82aba
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test_model_benchmark_ci zhiqiu-patch-1 v2.5.1 v2.5.0 v2.5.0-rc1 v2.5.0-rc0 v2.4.2 v2.4.1 v2.4.0 v2.4.0-rc0 v2.3.2 v2.3.1 v2.3.0 v2.3.0-rc0 v2.2.2 v2.2.1 v2.2.0 v2.2.0-rc0 v2.2.0-bak0 v2.1.3 v2.1.2 v2.1.1 v2.1.0 v2.1.0-rc0 v2.0.2 v2.0.1 v2.0.0 v2.0.0-rc1 v2.0.0-rc0 v2.0.0-beta0 v2.0.0-alpha0 v1.8.5 v1.8.4 v1.8.3 v1.8.2 v1.8.1 v1.8.0 v1.7.2 v1.7.1 v1.7.0 v1.6.3 v1.6.2 v1.6.1 v1.6.0 v1.6.0-rc0 v1.5.2 v1.5.1 v1.5.0 v1.4.1 v1.4.0 v1.3.2 v1.3.1 v1.3.0 v1.2.1 v1.2.0 v1.1.0 v1.0.2 v1.0.1 v1.0.0 v1.0.0-rc0 v0.15.0 v0.15.0-rc0 v0.14.0 v0.13.0 v0.12.0 v0.11.1a2 v0.11.1a1 v0.11.0 lite-v0.1
7 合并请求!11636[IMPORTANT] MKLDNN layout: Support for sum operator,!8482Release/0.11.0,!8190Release/0.11.0,!8189Release/0.11.0,!6633给线性回归的get-started代码加上了预测的示例~~,!4615Feature/tensor array add python binding,!2400Parameter initializer in V2 API
......@@ -126,6 +126,7 @@ def init_config_environment(
g_config=TrainerConfig(),
g_layer_map={},
g_parameter_map={},
g_parameter_initializer_map={},
g_extended_config_funcs={},
# store command args of paddle_trainer
......@@ -439,22 +440,22 @@ def model_type(name):
@config_class
class Bias(Cfg):
def __init__(
self,
parameter_name=None,
learning_rate=None,
momentum=None,
decay_rate=None,
decay_rate_l1=None,
initial_mean=None,
initial_std=None,
initial_strategy=None,
initial_smart=None,
num_batches_regularization=None,
sparse_remote_update=None,
gradient_clipping_threshold=None,
is_static=None,
is_shared=None, ):
def __init__(self,
parameter_name=None,
learning_rate=None,
momentum=None,
decay_rate=None,
decay_rate_l1=None,
initial_mean=None,
initial_std=None,
initial_strategy=None,
initial_smart=None,
num_batches_regularization=None,
sparse_remote_update=None,
gradient_clipping_threshold=None,
is_static=None,
is_shared=None,
initializer=None):
self.add_keys(locals())
......@@ -465,6 +466,7 @@ class Input(Cfg):
self,
input_layer_name,
parameter_name=None,
initializer=None,
learning_rate=None,
momentum=None,
decay_rate=None,
......@@ -521,6 +523,7 @@ class Projection(Input):
initial_std=None,
initial_strategy=None,
initial_smart=None,
initializer=None,
num_batches_regularization=None,
sparse_remote_update=None,
sparse_update=None,
......@@ -1479,7 +1482,8 @@ class LayerBase(object):
gradient_clipping_threshold=bias.
gradient_clipping_threshold,
is_static=bias.is_static,
is_shared=bias.is_shared, )
is_shared=bias.is_shared,
initializer=bias.initializer)
if for_self:
self.config.bias_parameter_name = bias.parameter_name
else:
......@@ -1536,7 +1540,8 @@ class LayerBase(object):
format=format,
is_static=input_config.is_static,
is_shared=input_config.is_shared,
update_hooks=input_config.update_hooks)
update_hooks=input_config.update_hooks,
initializer=input_config.initializer)
def set_layer_size(self, size):
if self.config.size == 0:
......@@ -3221,7 +3226,8 @@ def Parameter(name,
need_compact=None,
is_static=None,
is_shared=None,
update_hooks=None):
update_hooks=None,
initializer=None):
config_assert(name not in g_parameter_map,
'Duplicated parameter name: ' + name)
......@@ -3309,6 +3315,11 @@ def Parameter(name,
para.update_hooks.extend(update_hooks)
g_parameter_map[name] = para
if initializer is not None:
config_assert(
callable(initializer),
"parameter initializer should be a callable object")
g_parameter_initializer_map[name] = initializer
@config_func
......
......@@ -95,6 +95,10 @@ class ParameterAttribute(object):
:param sparse_update: Enable sparse update for this parameter. It will
enable both local and remote sparse update.
:type sparse_update: bool
:param initializer: If not None, it should be a callable object which accepts
a parameter name and returns numpy array for the initial
value of the parameter
:param initializer: callable object
"""
def __init__(self,
......@@ -109,7 +113,8 @@ class ParameterAttribute(object):
learning_rate=None,
momentum=None,
gradient_clipping_threshold=None,
sparse_update=False):
sparse_update=False,
initializer=None):
self.attr = {}
if is_static:
......@@ -161,6 +166,8 @@ class ParameterAttribute(object):
is_compatible_with(gradient_clipping_threshold, float):
self.attr['gradient_clipping_threshold'] = \
gradient_clipping_threshold
if initializer is not None:
self.attr['initializer'] = initializer
def set_default_parameter_name(self, name):
"""
......
import numpy as np
import py_paddle.swig_paddle as api
from paddle.proto.ParameterConfig_pb2 import ParameterConfig
import paddle.trainer.config_parser as cp
import struct
import tarfile
import cStringIO
......@@ -18,8 +19,11 @@ def create(layers):
"""
topology = Topology(layers)
pool = Parameters()
initializers = cp.g_parameter_initializer_map
for param in topology.proto().parameters:
pool.__append_config__(param)
if param.name in initializers:
pool[param.name] = initializers[param.name](param.name)
return pool
......
......@@ -11,6 +11,9 @@ except ImportError:
sys.exit(0)
import paddle.v2.parameters as parameters
import paddle.v2.data_type as data_type
import paddle.v2.layer as layer
from paddle.v2.attr import ParamAttr
from paddle.proto.ParameterConfig_pb2 import ParameterConfig
import random
import cStringIO
......@@ -55,6 +58,25 @@ class TestParameters(unittest.TestCase):
p1 = params_dup.get(name)
self.assertTrue(numpy.isclose(p0, p1).all())
def test_initializer(self):
def initializer(name):
assert name == "fc.w"
mat = numpy.ones((3, 2), dtype=numpy.float32)
mat[1, 1] = 2
return mat
x = layer.data(name="x", type=data_type.dense_vector(3))
y = layer.fc(x,
size=2,
bias_attr=False,
param_attr=ParamAttr(
name="fc.w", initializer=initializer))
params = parameters.create(y)
val = params["fc.w"]
assert val.shape == (3, 2)
expected = numpy.array([[1, 1], [1, 2], [1, 1]], numpy.float32)
assert numpy.logical_and.reduce(numpy.reshape(val == expected, 6))
if __name__ == '__main__':
unittest.main()
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