def __init__(
self, conv_layers_before=None, input_size=83, hidden_size=512,
num_layers=1, dropout_in=0.1, dropout_out=0.1, bidirectional=False,
residual=False, left_pad=False, pretrained_embed=None, padding_value=0.,
):
super().__init__(None) # no src dictionary
self.conv_layers_before = conv_layers_before
self.num_layers = num_layers
self.dropout_in = dropout_in
self.dropout_out = dropout_out
self.bidirectional = bidirectional
self.hidden_size = hidden_size
self.residual = residual
self.lstm = nn.ModuleList([
LSTM(
input_size=input_size if layer == 0 else 2 * hidden_size if self.bidirectional else hidden_size,
hidden_size=hidden_size,
bidirectional=bidirectional,
)
for layer in range(num_layers)
])
self.left_pad = left_pad
self.padding_value = padding_value
self.output_units = hidden_size
if bidirectional:
self.output_units *= 2
def __init__(
self, conv_layers_before=None, input_size=83, hidden_size=512,
num_layers=1, dropout_in=0.1, dropout_out=0.1, bidirectional=False,
residual=False, left_pad=False, padding_value=0., src_bucketed=False,
max_source_positions=DEFAULT_MAX_SOURCE_POSITIONS,
):
super().__init__(None) # no src dictionary
self.conv_layers_before = conv_layers_before
self.num_layers = num_layers
self.dropout_in_module = FairseqDropout(dropout_in, module_name=self.__class__.__name__)
self.dropout_out_module = FairseqDropout(dropout_out, module_name=self.__class__.__name__)
self.bidirectional = bidirectional
self.hidden_size = hidden_size
self.residual = residual
self.max_source_positions = max_source_positions
self.lstm = nn.ModuleList([
LSTM(
input_size=input_size if layer == 0 else 2 * hidden_size if self.bidirectional else hidden_size,
hidden_size=hidden_size,
bidirectional=bidirectional,
)
for layer in range(num_layers)
])
self.left_pad = left_pad
self.padding_value = padding_value
self.src_bucketed = src_bucketed
self.output_units = hidden_size
if bidirectional:
self.output_units *= 2
def __init__(
self,
dictionary,
embed_dim=512,
hidden_size=512,
num_layers=1,
dropout_in=0.1,
dropout_out=0.1,
bidirectional=False,
left_pad_source=True,
pretrained_embed=None,
padding_idx=None,
max_source_positions=DEFAULT_MAX_SOURCE_POSITIONS,
rnn_type="gru"
):
super().__init__(dictionary)
self.num_layers = num_layers
self.dropout_in_module = FairseqDropout(
dropout_in, module_name=self.__class__.__name__
)
self.dropout_out_module = FairseqDropout(
dropout_out, module_name=self.__class__.__name__
)
self.bidirectional = bidirectional
self.hidden_size = hidden_size
self.max_source_positions = max_source_positions
num_embeddings = len(dictionary)
self.padding_idx = padding_idx if padding_idx is not None else dictionary.pad()
if pretrained_embed is None:
self.embed_tokens = torch.nn.Embedding(num_embeddings, embed_dim, self.padding_idx)
else:
self.embed_tokens = pretrained_embed
self.rnn_type = rnn_type
if rnn_type == "gru":
self.hidden = GRU(
input_size=embed_dim,
hidden_size=hidden_size,
num_layers=num_layers,
dropout=self.dropout_out_module.p if num_layers > 1 else 0.0,
bidirectional=bidirectional,
)
elif rnn_type == "lstm":
self.hidden = LSTM(
input_size=embed_dim,
hidden_size=hidden_size,
num_layers=num_layers,
dropout=self.dropout_out_module.p if num_layers > 1 else 0.0,
bidirectional=bidirectional,
)
self.left_pad_source = left_pad_source
self.output_units = hidden_size
if bidirectional:
self.bidir_dense = torch.nn.Linear(2, 1)
def __init__(
self, dictionary, embed_dim, hidden_size=512,
bidirectional=True, num_layers=2, no_token_rnn=False,
):
super().__init__(dictionary)
self.need_rnn = not no_token_rnn
self.hidden_size = hidden_size
self.bidirectional = bidirectional
self.num_layers = num_layers
self.rnn = LSTM(
input_size=embed_dim,
hidden_size=self.hidden_size,
num_layers=self.num_layers,
bidirectional=self.bidirectional,
) if self.need_rnn else None
hidden_size = self.hidden_size if self.need_rnn else embed_dim
self.classifier = nn.Linear(hidden_size, len(dictionary))
def __init__(
self,
dictionary,
embed_dim=512,
hidden_size=512,
num_layers=1,
dropout_in=0.1,
dropout_out=0.1,
bidirectional=False,
left_pad=True,
pretrained_embed=None,
padding_value=0.,
):
super().__init__(dictionary)
self.num_layers = num_layers
self.dropout_in = dropout_in
self.dropout_out = dropout_out
self.bidirectional = bidirectional
self.hidden_size = hidden_size
num_embeddings1 = len(dictionary[0])
num_embeddings2 = len(dictionary[1])
self.padding_idx_1 = dictionary[0].pad()
self.padding_idx_2 = dictionary[1].pad()
if pretrained_embed is None:
self.embed_tokens_1 = Embedding(num_embeddings1, embed_dim,
self.padding_idx_1)
if bidirectional:
self.embed_tokens_2 = Embedding(num_embeddings2, 2 * embed_dim,
self.padding_idx_2)
else:
self.embed_tokens_2 = Embedding(num_embeddings2, embed_dim,
self.padding_idx_2)
else:
self.embed_tokens_1, self.embed_tokens_2 = pretrained_embed
self.lstm1 = LSTM(
input_size=embed_dim,
hidden_size=hidden_size,
num_layers=num_layers,
dropout=self.dropout_out if num_layers > 1 else 0.,
bidirectional=bidirectional,
)
# self.lstm2 = LSTM(
# input_size=embed_dim,
# hidden_size=hidden_size,
# num_layers=num_layers,
# dropout=self.dropout_out if num_layers > 1 else 0.,
# bidirectional=bidirectional,
# )
if self.bidirectional:
self.fconv2 = FConvEncoder(dictionary[1],
2 * embed_dim,
convolutions=[(512, 3)] * 15,
dropout=dropout_in,
left_pad=left_pad)
else:
self.fconv2 = FConvEncoder(dictionary[1],
embed_dim,
convolutions=[(512, 3)] * 15,
dropout=dropout_in,
left_pad=left_pad)
self.fconv2.num_attention_layers = 1
self.left_pad = left_pad
self.padding_value = padding_value
self.output_units = hidden_size
if bidirectional:
self.output_units *= 2
def __init__(
self,
pre_encoder=None,
input_size=83,
hidden_size=512,
num_layers=1,
dropout_in=0.1,
dropout_out=0.1,
bidirectional=False,
residual=False,
left_pad=False,
padding_value=0.0,
src_bucketed=False,
max_source_positions=DEFAULT_MAX_SOURCE_POSITIONS,
multilayer_rnn_as_single_module=False,
):
super().__init__(None) # no src dictionary
self.pre_encoder = pre_encoder
self.num_layers = num_layers
self.dropout_in_module = FairseqDropout(
dropout_in * 1.0, module_name=self.__class__.__name__
)
self.dropout_out_module = FairseqDropout(
dropout_out * 1.0, module_name=self.__class__.__name__
)
self.bidirectional = bidirectional
self.hidden_size = hidden_size
self.residual = residual
self.max_source_positions = max_source_positions
# enforce deterministic behavior (https://pytorch.org/docs/stable/generated/torch.nn.LSTM.html)
os.environ["CUBLAS_WORKSPACE_CONFIG"] = ":16:8"
self.multilayer_rnn_as_single_module = multilayer_rnn_as_single_module
if self.multilayer_rnn_as_single_module:
self.lstm = LSTM(
input_size=input_size,
hidden_size=hidden_size,
num_layers=num_layers,
dropout=self.dropout_out_module.p if num_layers > 1 else 0.0,
bidirectional=bidirectional,
)
else:
self.lstm = nn.ModuleList(
[
LSTM(
input_size=input_size
if layer == 0
else 2 * hidden_size
if self.bidirectional
else hidden_size,
hidden_size=hidden_size,
bidirectional=bidirectional,
)
for layer in range(num_layers)
]
)
self.left_pad = left_pad
self.padding_value = padding_value
self.src_bucketed = src_bucketed
self.output_units = hidden_size
if bidirectional:
self.output_units *= 2
def __init__(self,
dictionary,
embed_tokens,
embed_dim=512,
num_layers=1,
dropout_in=0.1,
dropout_out=0.1,
bidirectional=False,
left_pad=False,
padding_value=0.,
adaptive_softmax=False,
adaptive_softmax_cutoff=[],
adaptive_softmax_dropout=0.1,
adaptive_softmax_factor=None):
super(LSTMTaggerDecoder, self).__init__(dictionary=dictionary)
if hasattr(embed_tokens, "embedded_dim"):
self.in_embed_dim = embed_tokens.embedded_dim
elif hasattr(embed_tokens, "embed_dim"):
self.in_embed_dim = embed_tokens.embed_dim
elif hasattr(embed_tokens, "embedding_dim"):
self.in_embed_dim = embed_tokens.embedding_dim
else:
raise Exception
self.output_units = self.embed_dim = embed_dim
self.out_embed_dim = len(dictionary)
self.num_layers = num_layers
self.dropout_in = dropout_in
self.dropout_out = dropout_out
self.bidirectional = bidirectional
if self.bidirectional:
#self.output_units *= 2
pass
self.padding_idx = dictionary.pad()
self.padding_value = 0.
self.left_pad = left_pad
self.embed_tokens = embed_tokens
self.fc_in = self.fc_out1 = self.fc_out2 = None
if self.in_embed_dim != self.embed_dim:
self.fc_in = Linear(self.in_embed_dim, self.embed_dim)
if self.output_units != self.embed_dim:
self.fc_out1 = Linear(self.output_units, self.embed_dim)
if self.embed_dim != self.out_embed_dim:
self.fc_out2 = Linear(self.embed_dim, self.out_embed_dim)
self.lstm = LSTM(
input_size=embed_dim,
hidden_size=embed_dim,
num_layers=num_layers,
dropout=self.dropout_out if num_layers > 1 else 0.,
bidirectional=bidirectional,
)
self.adaptive_softmax = None
if adaptive_softmax:
self.adaptive_softmax = AdaptiveSoftmax(
len(dictionary),
self.embed_dim,
adaptive_softmax_cutoff,
dropout=adaptive_softmax_dropout,
adaptive_inputs=None,
factor=adaptive_softmax_factor,
tie_proj=False,
)
def __init__(
self,
dictionary,
rnn_type="lstm",
embed_dim=512,
hidden_size=512,
out_embed_dim=512,
num_layers=1,
dropout_in=0.1,
dropout_out=0.1,
attention_type="luong-dot",
encoder_output_units=512,
pretrained_embed=None,
share_input_output_embed=False,
adaptive_softmax_cutoff=None,
max_target_positions=DEFAULT_MAX_TARGET_POSITIONS,
residuals=False,
):
super().__init__(dictionary)
self.dropout_in_module = FairseqDropout(
dropout_in, module_name=self.__class__.__name__
)
self.dropout_out_module = FairseqDropout(
dropout_out, module_name=self.__class__.__name__
)
self.hidden_size = hidden_size
self.share_input_output_embed = share_input_output_embed
self.need_attn = True
self.max_target_positions = max_target_positions
self.residuals = residuals
self.num_layers = num_layers
self.adaptive_softmax = None
num_embeddings = len(dictionary)
padding_idx = dictionary.pad()
if pretrained_embed is None:
self.embed_tokens = torch.nn.Embedding(num_embeddings, embed_dim, padding_idx)
else:
self.embed_tokens = pretrained_embed
self.encoder_output_units = encoder_output_units
if encoder_output_units != hidden_size and encoder_output_units != 0:
self.encoder_hidden_proj = torch.nn.Linear(encoder_output_units, hidden_size)
self.encoder_cell_proj = torch.nn.Linear(encoder_output_units, hidden_size)
else:
self.encoder_hidden_proj = self.encoder_cell_proj = None
# input feeding is described in arxiv.org/abs/1508.04025
input_feed_size = 0 if encoder_output_units == 0 else hidden_size
# For Bahdanau, we compute the context on the input feed
bahd_factor = hidden_size \
if attention_type in ["bahdanau-dot", "bahdanau-concat", "bahdanau-general", "bahdanau"] \
else 0
self.rnn_type = rnn_type
if rnn_type == "lstm":
self.layers = LSTM(
input_size=input_feed_size + embed_dim + bahd_factor,
hidden_size=hidden_size,
num_layers=num_layers
)
else:
self.layers = GRU(
input_size=input_feed_size + embed_dim + bahd_factor,
hidden_size=hidden_size,
num_layers=num_layers
)
if attention_type == "none":
self.attention_type = "none"
self.attention = None
else:
self.attention_type = attention_type
self.attention = Attention(self.attention_type, hidden_size)
if hidden_size != out_embed_dim:
self.additional_fc = torch.nn.Linear(hidden_size, out_embed_dim)
if adaptive_softmax_cutoff is not None:
# setting adaptive_softmax dropout to dropout_out for now but can be redefined
self.adaptive_softmax = AdaptiveSoftmax(
num_embeddings,
hidden_size,
adaptive_softmax_cutoff,
dropout=dropout_out,
)
elif not self.share_input_output_embed:
self.fc_out = Linear(out_embed_dim, num_embeddings, dropout=dropout_out)