def to_concat_skip_model(self, start_id, end_id):
"""Add a weighted add concatenate connection from after start node to end node.
Args:
start_id: The convolutional layer ID, after which to start the skip-connection.
end_id: The convolutional layer ID, after which to end the skip-connection.
"""
self.operation_history.append(
('to_concat_skip_model', start_id, end_id))
filters_end = self.layer_list[end_id].output.shape[-1]
filters_start = self.layer_list[start_id].output.shape[-1]
start_node_id = self.layer_id_to_output_node_ids[start_id][0]
pre_end_node_id = self.layer_id_to_input_node_ids[end_id][0]
end_node_id = self.layer_id_to_output_node_ids[end_id][0]
skip_output_id = self._insert_pooling_layer_chain(
start_node_id, end_node_id)
concat_input_node_id = self._add_node(
deepcopy(self.node_list[end_node_id]))
self._redirect_edge(pre_end_node_id, end_node_id, concat_input_node_id)
concat_layer = StubConcatenate()
concat_layer.input = [
self.node_list[concat_input_node_id],
self.node_list[skip_output_id]
]
concat_output_node_id = self._add_node(Node(concat_layer.output_shape))
self._add_edge(concat_layer, concat_input_node_id,
concat_output_node_id)
self._add_edge(concat_layer, skip_output_id, concat_output_node_id)
concat_layer.output = self.node_list[concat_output_node_id]
self.node_list[concat_output_node_id].shape = concat_layer.output_shape
# Add the concatenate layer.
new_conv_layer = get_conv_class(self.n_dim)(
filters_start + filters_end, filters_end, 1)
self._add_edge(new_conv_layer, concat_output_node_id, end_node_id)
new_conv_layer.input = self.node_list[concat_output_node_id]
new_conv_layer.output = self.node_list[end_node_id]
self.node_list[end_node_id].shape = new_conv_layer.output_shape
if self.weighted:
filter_shape = (1, ) * self.n_dim
weights = np.zeros((filters_end, filters_end) + filter_shape)
for i in range(filters_end):
filter_weight = np.zeros((filters_end, ) + filter_shape)
center_index = (i, ) + (0, ) * self.n_dim
filter_weight[center_index] = 1
weights[i, ...] = filter_weight
weights = np.concatenate(
(weights,
np.zeros((filters_end, filters_start) + filter_shape)),
axis=1)
bias = np.zeros(filters_end)
new_conv_layer.set_weights((add_noise(weights, np.array([0, 1])),
add_noise(bias, np.array([0, 1]))))
def to_concat_skip_model(self, start_id, end_id):
"""Add a weighted add concatenate connection from after start node to end node.
Args:
start_id: The convolutional layer ID, after which to start the skip-connection.
end_id: The convolutional layer ID, after which to end the skip-connection.
"""
self.operation_history.append(('to_concat_skip_model', start_id, end_id))
filters_end = self.layer_list[end_id].output.shape[-1]
filters_start = self.layer_list[start_id].output.shape[-1]
start_node_id = self.layer_id_to_output_node_ids[start_id][0]
pre_end_node_id = self.layer_id_to_input_node_ids[end_id][0]
end_node_id = self.layer_id_to_output_node_ids[end_id][0]
skip_output_id = self._insert_pooling_layer_chain(start_node_id, end_node_id)
concat_input_node_id = self._add_node(deepcopy(self.node_list[end_node_id]))
self._redirect_edge(pre_end_node_id, end_node_id, concat_input_node_id)
concat_layer = StubConcatenate()
concat_layer.input = [self.node_list[concat_input_node_id], self.node_list[skip_output_id]]
concat_output_node_id = self._add_node(Node(concat_layer.output_shape))
self._add_edge(concat_layer, concat_input_node_id, concat_output_node_id)
self._add_edge(concat_layer, skip_output_id, concat_output_node_id)
concat_layer.output = self.node_list[concat_output_node_id]
self.node_list[concat_output_node_id].shape = concat_layer.output_shape
# Add the concatenate layer.
new_conv_layer = get_conv_class(self.n_dim)(filters_start + filters_end,
filters_end, 1)
self._add_edge(new_conv_layer, concat_output_node_id, end_node_id)
new_conv_layer.input = self.node_list[concat_output_node_id]
new_conv_layer.output = self.node_list[end_node_id]
self.node_list[end_node_id].shape = new_conv_layer.output_shape
if self.weighted:
filter_shape = (1,) * self.n_dim
weights = np.zeros((filters_end, filters_end) + filter_shape)
for i in range(filters_end):
filter_weight = np.zeros((filters_end,) + filter_shape)
center_index = (i,) + (0,) * self.n_dim
filter_weight[center_index] = 1
weights[i, ...] = filter_weight
weights = np.concatenate((weights,
np.zeros((filters_end, filters_start) + filter_shape)), axis=1)
bias = np.zeros(filters_end)
new_conv_layer.set_weights((add_noise(weights, np.array([0, 1])), add_noise(bias, np.array([0, 1]))))
def to_add_skip_model(self, start_id, end_id):
"""Add a weighted add skip-connection from after start node to end node.
Args:
start_id: The convolutional layer ID, after which to start the skip-connection.
end_id: The convolutional layer ID, after which to end the skip-connection.
"""
self.operation_history.append(('to_add_skip_model', start_id, end_id))
filters_end = self.layer_list[end_id].output.shape[-1]
filters_start = self.layer_list[start_id].output.shape[-1]
start_node_id = self.layer_id_to_output_node_ids[start_id][0]
pre_end_node_id = self.layer_id_to_input_node_ids[end_id][0]
end_node_id = self.layer_id_to_output_node_ids[end_id][0]
skip_output_id = self._insert_pooling_layer_chain(
start_node_id, end_node_id)
# Add the conv layer
new_conv_layer = get_conv_class(self.n_dim)(filters_start, filters_end,
1)
skip_output_id = self.add_layer(new_conv_layer, skip_output_id)
# Add the add layer.
add_input_node_id = self._add_node(
deepcopy(self.node_list[end_node_id]))
add_layer = StubAdd()
self._redirect_edge(pre_end_node_id, end_node_id, add_input_node_id)
self._add_edge(add_layer, add_input_node_id, end_node_id)
self._add_edge(add_layer, skip_output_id, end_node_id)
add_layer.input = [
self.node_list[add_input_node_id], self.node_list[skip_output_id]
]
add_layer.output = self.node_list[end_node_id]
self.node_list[end_node_id].shape = add_layer.output_shape
# Set weights to the additional conv layer.
if self.weighted:
filter_shape = (1, ) * self.n_dim
weights = np.zeros((filters_end, filters_start) + filter_shape)
bias = np.zeros(filters_end)
new_conv_layer.set_weights((add_noise(weights, np.array([0, 1])),
add_noise(bias, np.array([0, 1]))))
def to_add_skip_model(self, start_id, end_id):
"""Add a weighted add skip-connection from after start node to end node.
Args:
start_id: The convolutional layer ID, after which to start the skip-connection.
end_id: The convolutional layer ID, after which to end the skip-connection.
"""
self.operation_history.append(('to_add_skip_model', start_id, end_id))
filters_end = self.layer_list[end_id].output.shape[-1]
filters_start = self.layer_list[start_id].output.shape[-1]
start_node_id = self.layer_id_to_output_node_ids[start_id][0]
pre_end_node_id = self.layer_id_to_input_node_ids[end_id][0]
end_node_id = self.layer_id_to_output_node_ids[end_id][0]
skip_output_id = self._insert_pooling_layer_chain(start_node_id, end_node_id)
# Add the conv layer
new_conv_layer = get_conv_class(self.n_dim)(filters_start,
filters_end,
1)
skip_output_id = self.add_layer(new_conv_layer, skip_output_id)
# Add the add layer.
add_input_node_id = self._add_node(deepcopy(self.node_list[end_node_id]))
add_layer = StubAdd()
self._redirect_edge(pre_end_node_id, end_node_id, add_input_node_id)
self._add_edge(add_layer, add_input_node_id, end_node_id)
self._add_edge(add_layer, skip_output_id, end_node_id)
add_layer.input = [self.node_list[add_input_node_id], self.node_list[skip_output_id]]
add_layer.output = self.node_list[end_node_id]
self.node_list[end_node_id].shape = add_layer.output_shape
# Set weights to the additional conv layer.
if self.weighted:
filter_shape = (1,) * self.n_dim
weights = np.zeros((filters_end, filters_start) + filter_shape)
bias = np.zeros(filters_end)
new_conv_layer.set_weights((add_noise(weights, np.array([0, 1])), add_noise(bias, np.array([0, 1]))))
def to_add_skip_model(self, start_id, end_id):
"""Add a weighted add skip-connection from after start node to end node.
Args:
start_id: The convolutional layer ID, after which to start the skip-connection.
end_id: The convolutional layer ID, after which to end the skip-connection.
"""
self.operation_history.append(('to_add_skip_model', start_id, end_id))
conv_block_input_id = self._conv_block_end_node(start_id)
conv_block_input_id = self.adj_list[conv_block_input_id][0][0]
block_last_layer_input_id = self._conv_block_end_node(end_id)
# Add the pooling layer chain.
layer_list = self._get_pooling_layers(conv_block_input_id, block_last_layer_input_id)
skip_output_id = conv_block_input_id
for index, layer_id in enumerate(layer_list):
skip_output_id = self.add_layer(deepcopy(self.layer_list[layer_id]), skip_output_id)
# Add the conv layer
new_relu_layer = StubReLU()
skip_output_id = self.add_layer(new_relu_layer, skip_output_id)
new_conv_layer = self.conv(self.layer_list[start_id].filters, self.layer_list[end_id].filters, 1)
skip_output_id = self.add_layer(new_conv_layer, skip_output_id)
new_bn_layer = self.batch_norm(self.layer_list[end_id].filters)
skip_output_id = self.add_layer(new_bn_layer, skip_output_id)
# Add the add layer.
block_last_layer_output_id = self.adj_list[block_last_layer_input_id][0][0]
add_input_node_id = self._add_node(deepcopy(self.node_list[block_last_layer_output_id]))
add_layer = StubAdd()
self._redirect_edge(block_last_layer_input_id, block_last_layer_output_id, add_input_node_id)
self._add_edge(add_layer, add_input_node_id, block_last_layer_output_id)
self._add_edge(add_layer, skip_output_id, block_last_layer_output_id)
add_layer.input = [self.node_list[add_input_node_id], self.node_list[skip_output_id]]
add_layer.output = self.node_list[block_last_layer_output_id]
self.node_list[block_last_layer_output_id].shape = add_layer.output_shape
# Set weights to the additional conv layer.
if self.weighted:
filters_end = self.layer_list[end_id].filters
filters_start = self.layer_list[start_id].filters
filter_shape = (1,) * (len(self.layer_list[end_id].get_weights()[0].shape) - 2)
weights = np.zeros((filters_end, filters_start) + filter_shape)
bias = np.zeros(filters_end)
new_conv_layer.set_weights((add_noise(weights, np.array([0, 1])), add_noise(bias, np.array([0, 1]))))
n_filters = filters_end
new_weights = [add_noise(np.ones(n_filters, dtype=np.float32), np.array([0, 1])),
add_noise(np.zeros(n_filters, dtype=np.float32), np.array([0, 1])),
add_noise(np.zeros(n_filters, dtype=np.float32), np.array([0, 1])),
add_noise(np.ones(n_filters, dtype=np.float32), np.array([0, 1]))]
new_bn_layer.set_weights(new_weights)
def to_concat_skip_model(self, start_id, end_id):
"""Add a weighted add concatenate connection from after start node to end node.
Args:
start_id: The convolutional layer ID, after which to start the skip-connection.
end_id: The convolutional layer ID, after which to end the skip-connection.
"""
self.operation_history.append(('to_concat_skip_model', start_id, end_id))
conv_block_input_id = self._conv_block_end_node(start_id)
conv_block_input_id = self.adj_list[conv_block_input_id][0][0]
block_last_layer_input_id = self._conv_block_end_node(end_id)
# Add the pooling layer chain.
pooling_layer_list = self._get_pooling_layers(conv_block_input_id, block_last_layer_input_id)
skip_output_id = conv_block_input_id
for index, layer_id in enumerate(pooling_layer_list):
skip_output_id = self.add_layer(deepcopy(self.layer_list[layer_id]), skip_output_id)
block_last_layer_output_id = self.adj_list[block_last_layer_input_id][0][0]
concat_input_node_id = self._add_node(deepcopy(self.node_list[block_last_layer_output_id]))
self._redirect_edge(block_last_layer_input_id, block_last_layer_output_id, concat_input_node_id)
concat_layer = StubConcatenate()
concat_layer.input = [self.node_list[concat_input_node_id], self.node_list[skip_output_id]]
concat_output_node_id = self._add_node(Node(concat_layer.output_shape))
self._add_edge(concat_layer, concat_input_node_id, concat_output_node_id)
self._add_edge(concat_layer, skip_output_id, concat_output_node_id)
concat_layer.output = self.node_list[concat_output_node_id]
self.node_list[concat_output_node_id].shape = concat_layer.output_shape
# Add the concatenate layer.
new_relu_layer = StubReLU()
concat_output_node_id = self.add_layer(new_relu_layer, concat_output_node_id)
new_conv_layer = self.conv(self.layer_list[start_id].filters + self.layer_list[end_id].filters,
self.layer_list[end_id].filters, 1)
concat_output_node_id = self.add_layer(new_conv_layer, concat_output_node_id)
new_bn_layer = self.batch_norm(self.layer_list[end_id].filters)
self._add_edge(new_bn_layer, concat_output_node_id, block_last_layer_output_id)
new_bn_layer.input = self.node_list[concat_output_node_id]
new_bn_layer.output = self.node_list[block_last_layer_output_id]
self.node_list[block_last_layer_output_id].shape = new_bn_layer.output_shape
if self.weighted:
filters_end = self.layer_list[end_id].filters
filters_start = self.layer_list[start_id].filters
filter_shape = (1,) * (len(self.layer_list[end_id].get_weights()[0].shape) - 2)
weights = np.zeros((filters_end, filters_end) + filter_shape)
for i in range(filters_end):
filter_weight = np.zeros((filters_end,) + filter_shape)
center_index = (i,) + (0,) * self.n_dim
filter_weight[center_index] = 1
weights[i, ...] = filter_weight
weights = np.concatenate((weights,
np.zeros((filters_end, filters_start) + filter_shape)), axis=1)
bias = np.zeros(filters_end)
new_conv_layer.set_weights((add_noise(weights, np.array([0, 1])), add_noise(bias, np.array([0, 1]))))
n_filters = filters_end
new_weights = [add_noise(np.ones(n_filters, dtype=np.float32), np.array([0, 1])),
add_noise(np.zeros(n_filters, dtype=np.float32), np.array([0, 1])),
add_noise(np.zeros(n_filters, dtype=np.float32), np.array([0, 1])),
add_noise(np.ones(n_filters, dtype=np.float32), np.array([0, 1]))]
new_bn_layer.set_weights(new_weights)
