Merge pull request #1498 from reyoung/feature/expose_networks

Feature/expose networks

Author: reyoung

python/paddle/v2/__init__.py

@@ -24,12 +24,13 @@
 from . import reader
 import attr
 import pooling
+import networks
 import py_paddle.swig_paddle as api
 
 __all__ = [
     'optimizer', 'layer', 'activation', 'parameters', 'init', 'trainer',
     'event', 'data_type', 'attr', 'pooling', 'data_feeder', 'dataset', 'reader',
-    'topology'
+    'topology', 'networks'
 ]
 
 

python/paddle/v2/config_base.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2016 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.
+
 import collections
 
 from paddle.trainer_config_helpers.default_decorators import wrap_name_default

python/paddle/v2/networks.py

@@ -0,0 +1,45 @@
+# Copyright (c) 2016 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.
+
+import paddle.trainer_config_helpers.networks as conf_nw
+import inspect
+from config_base import __convert_to_v2__
+
+__all__ = []
+
+
+def __initialize__():
+    for each_subnetwork in conf_nw.__all__:
+        if each_subnetwork in ['inputs', 'outputs']:
+            continue
+        func = getattr(conf_nw, each_subnetwork)
+        if hasattr(func, 'argspec'):
+            argspec = func.argspec
+        else:
+            argspec = inspect.getargspec(func)
+        if each_subnetwork == 'simple_attention':
+            parents = ['encoded_sequence', 'encoded_proj', 'decoder_state']
+        else:
+            parents = filter(lambda x: x.startswith('input'), argspec.args)
+        assert len(parents) != 0, each_subnetwork
+        v2_subnet = __convert_to_v2__(
+            each_subnetwork,
+            parent_names=parents,
+            is_default_name='name' in argspec.args)
+        globals()[each_subnetwork] = v2_subnet
+        global __all__
+        __all__.append(each_subnetwork)
+
+
+__initialize__()

python/paddle/v2/tests/test_layer.py

@@ -18,6 +18,7 @@
 import paddle.v2.data_type as data_type
 import paddle.v2.layer as layer
 import paddle.v2.pooling as pooling
+import paddle.v2.networks as networks
 
 pixel = layer.data(name='pixel', type=data_type.dense_vector(128))
 label = layer.data(name='label', type=data_type.integer_value(10))
@@ -251,5 +252,13 @@ def test_operator(self):
         print layer.parse_network(conv1)
 
 
+class NetworkTests(unittest.TestCase):
+    def test_vgg(self):
+        img = layer.data(name='pixel', type=data_type.dense_vector(784))
+        vgg_out = networks.small_vgg(
+            input_image=img, num_channels=1, num_classes=2)
+        print layer.parse_network(vgg_out)
+
+
 if __name__ == '__main__':
     unittest.main()