def reset_parameters(self):
# Use sensible default initializations for parameters.
block_orthogonal(self.linear_for_r.weight.data, [self.hidden_size,self.hidden_size+self.input_size])
block_orthogonal(self.linear_for_f.weight.data, [self.hidden_size,self.hidden_size])
block_orthogonal(self.linear_for_new_f.weight.data, [self.hidden_size, self.hidden_size+self.input_size+self.hidden_size])
block_orthogonal(self.linear_for_new_r.weight.data, [self.hidden_size,self.hidden_size+self.input_size])
block_orthogonal(self.linear_for_b.weight.data, [self.hidden_size, self.hidden_size])
def reset_parameters(self):
self.bias.data.zero_()
weight_index = 0
bias_index = 0
for i in range(self.num_layers):
input_size = self.input_size if i == 0 else self.hidden_size
# Create a tensor of the right size and initialize it.
init_tensor = self.weight.new_zeros(input_size,
self.hidden_size * 6)
block_orthogonal(init_tensor, [input_size, self.hidden_size])
# Copy it into the flat weight.
self.weight.data[weight_index: weight_index + init_tensor.nelement()]\
.view_as(init_tensor).copy_(init_tensor)
weight_index += init_tensor.nelement()
# Same for the recurrent connection weight.
init_tensor = self.weight.new_zeros(self.hidden_size,
self.hidden_size * 5)
block_orthogonal(init_tensor, [self.hidden_size, self.hidden_size])
self.weight.data[weight_index: weight_index + init_tensor.nelement()]\
.view_as(init_tensor).copy_(init_tensor)
weight_index += init_tensor.nelement()
# Set the forget bias to 1.
self.bias.data[bias_index + self.hidden_size:bias_index +
2 * self.hidden_size].fill_(1)
bias_index += 5 * self.hidden_size
def reset_parameters(self) -> None:
self.bias.data.zero_()
weight_index = 0
bias_index = 0
for i in range(self.num_layers):
input_size = self.input_size if i == 0 else self.hidden_size
# Create a tensor of the right size and initialize it.
init_tensor = self.weight.new_zeros(input_size, self.hidden_size * 6)
block_orthogonal(init_tensor, [input_size, self.hidden_size])
# Copy it into the flat weight.
self.weight.data[weight_index: weight_index + init_tensor.nelement()]\
.view_as(init_tensor).copy_(init_tensor)
weight_index += init_tensor.nelement()
# Same for the recurrent connection weight.
init_tensor = self.weight.new_zeros(self.hidden_size, self.hidden_size * 5)
block_orthogonal(init_tensor, [self.hidden_size, self.hidden_size])
self.weight.data[weight_index: weight_index + init_tensor.nelement()]\
.view_as(init_tensor).copy_(init_tensor)
weight_index += init_tensor.nelement()
# Set the forget bias to 1.
self.bias.data[bias_index + self.hidden_size:bias_index + 2 * self.hidden_size].fill_(1)
bias_index += 5 * self.hidden_size
def reset_parameters(self):
# Use sensible default initializations for parameters.
block_orthogonal(self.input_linearity.weight.data, [self.cell_size, self.input_size])
block_orthogonal(self.state_linearity.weight.data, [self.cell_size, self.hidden_size])
self.state_linearity.bias.data.fill_(0.0)
# Initialize forget gate biases to 1.0 as per An Empirical
# Exploration of Recurrent Network Architectures, (Jozefowicz, 2015).
self.state_linearity.bias.data[self.cell_size : 2 * self.cell_size].fill_(1.0)
def reset_parameters(self):
# Use sensible default initializations for parameters.
block_orthogonal(self.input_linearity.weight.data, [self.hidden_size, self.input_size])
block_orthogonal(self.state_linearity.weight.data, [self.hidden_size, self.hidden_size])
self.state_linearity.bias.data.fill_(0.0)
# Initialize forget gate biases to 1.0 as per An Empirical
# Exploration of Recurrent Network Architectures, (Jozefowicz, 2015).
self.state_linearity.bias.data[self.hidden_size:2 * self.hidden_size].fill_(1.0)
def reset_parameters(self):
try:
from allennlp.nn.initializers import block_orthogonal
block_orthogonal(self.weight_ih,
[self.hidden_size, self.input_size])
block_orthogonal(self.weight_hh,
[self.hidden_size, self.hidden_size])
except ImportError:
self.weight_initializer(self.weight_ih)
self.weight_initializer(self.weight_hh)
I.zeros_(self.bias_hh)
I.zeros_(self.bias_ih)
def test_block_orthogonal_can_initialize(self):
tensor = torch.zeros([10, 6])
block_orthogonal(tensor, [5, 3])
tensor = tensor.data.numpy()
def test_block_is_orthogonal(block) -> None:
matrix_product = block.T @ block
numpy.testing.assert_array_almost_equal(matrix_product,
numpy.eye(matrix_product.shape[-1]), 6)
test_block_is_orthogonal(tensor[:5, :3])
test_block_is_orthogonal(tensor[:5, 3:])
test_block_is_orthogonal(tensor[5:, 3:])
test_block_is_orthogonal(tensor[5:, :3])
def test_block_orthogonal_can_initialize(self):
tensor = Variable(torch.zeros([10, 6]))
block_orthogonal(tensor, [5, 3])
tensor = tensor.data.numpy()
def test_block_is_orthogonal(block) -> None:
matrix_product = block.T @ block
numpy.testing.assert_array_almost_equal(matrix_product,
numpy.eye(matrix_product.shape[-1]), 6)
test_block_is_orthogonal(tensor[:5, :3])
test_block_is_orthogonal(tensor[:5, 3:])
test_block_is_orthogonal(tensor[5:, 3:])
test_block_is_orthogonal(tensor[5:, :3])
def test_block_orthogonal_raises_on_mismatching_dimensions(self):
tensor = torch.zeros([10, 6, 8])
with pytest.raises(ConfigurationError):
block_orthogonal(tensor, [7, 2, 1])
def reset_parameters(self):
# Use sensible default initializations for parameters.
block_orthogonal(self.h_context_linearity.weight.data,
[self.hidden_size, self.hidden_size])
block_orthogonal(self.h_input_linearity.weight.data,
[self.hidden_size, self.hidden_size])
block_orthogonal(self.h_global_linearity.weight.data,
[self.hidden_size, self.hidden_size])
block_orthogonal(self.g_input_linearity.weight.data,
[self.hidden_size, self.hidden_size])
block_orthogonal(self.g_hidden_linearity.weight.data,
[self.hidden_size, self.hidden_size])
block_orthogonal(self.g_avg_linearity.weight.data,
[self.hidden_size, self.hidden_size])
self.h_input_linearity.bias.data.fill_(0.0)
self.g_input_linearity.bias.data.fill_(0.0)
def reset_parameters(self):
# Use sensible default initializations for parameters.
block_orthogonal(self.input_linearity.weight.data, [self.hidden_size, self.input_size])
block_orthogonal(self.state_linearity.weight.data, [self.hidden_size, self.hidden_size])
def test_block_orthogonal_raises_on_mismatching_dimensions(self):
tensor = torch.zeros([10, 6, 8])
with pytest.raises(ConfigurationError):
block_orthogonal(tensor, [7, 2, 1])
