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class GraphormerGraphAttnBias(nn.Module): """ Compute attention bias for each head. """ def __init__(self, config: GraphormerConfig): super().__init__() self.num_heads = config.num_attention_heads self.multi_hop_max_dist = config.multi_hop_max_dist # We do not change ed...
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class GraphormerMultiheadAttention(nn.Module): """Multi-headed attention. See "Attention Is All You Need" for more details. """ def __init__(self, config: GraphormerConfig): super().__init__() self.embedding_dim = config.embedding_dim self.kdim = config.kdim if config.kdim is n...
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class GraphormerGraphEncoderLayer(nn.Module): def __init__(self, config: GraphormerConfig) -> None: super().__init__() # Initialize parameters self.embedding_dim = config.embedding_dim self.num_attention_heads = config.num_attention_heads self.q_noise = config.q_noise ...
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class GraphormerGraphEncoder(nn.Module): def __init__(self, config: GraphormerConfig): super().__init__() self.dropout_module = torch.nn.Dropout(p=config.dropout, inplace=False) self.layerdrop = config.layerdrop self.embedding_dim = config.embedding_dim self.apply_graphormer...
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class GraphormerDecoderHead(nn.Module): def __init__(self, embedding_dim: int, num_classes: int): super().__init__() """num_classes should be 1 for regression, or the number of classes for classification""" self.lm_output_learned_bias = nn.Parameter(torch.zeros(1)) self.classifier = ...
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class GraphormerPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = GraphormerConfig base_model_prefix = "graphormer" main_input_name_nodes = "input_nodes" main_...
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class GraphormerModel(GraphormerPreTrainedModel): """The Graphormer model is a graph-encoder model. It goes from a graph to its representation. If you want to use the model for a downstream classification task, use GraphormerForGraphClassification instead. For any other downstream task, feel free to add a ...
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class GraphormerForGraphClassification(GraphormerPreTrainedModel): """ This model can be used for graph-level classification or regression tasks. It can be trained on - regression (by setting config.num_classes to 1); there should be one float-type label per graph - one task classification (by sett...
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class Parser(utils.Parser): dataset: str = "halfcheetah-medium-expert-v2" config: str = "config.offline"
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class TrajectoryTransformerOutput(ModelOutput): """ Base class for model's outputs that also contains a pooling of the last hidden states. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Language modeling loss. logits (`torch.Flo...
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class TrajectoryTransformerPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = TrajectoryTransformerConfig load_tf_weights = load_tf_weights_in_trajectory_transformer ...
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class EinLinear(nn.Module): def __init__(self, n_models, in_features, out_features, bias): super().__init__() self.n_models = n_models self.out_features = out_features self.in_features = in_features self.weight = nn.Parameter(torch.Tensor(n_models, out_features, in_features))...
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class CausalSelfAttention(nn.Module): def __init__(self, config): super().__init__() if config.n_embd % config.n_head != 0: raise ValueError(f"n_head ({config.n_head}) should be a divisor of n_embd ({config.n_embd})") # key, query, value projections for all heads self.k...
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class Block(nn.Module): def __init__(self, config): super().__init__() self.ln1 = nn.LayerNorm(config.n_embd) self.ln2 = nn.LayerNorm(config.n_embd) self.attn = CausalSelfAttention(config) # MLP self.l1 = nn.Linear(config.n_embd, 4 * config.n_embd) self.act =...
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class TrajectoryTransformerModel(TrajectoryTransformerPreTrainedModel): """the full GPT language model, with a context size of block_size""" def __init__(self, config): super().__init__(config) # input embedding stem (+1 for stop token) self.tok_emb = nn.Embedding(config.vocab_size * c...
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class TrajectoryTransformerConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`TrajectoryTransformerModel`]. It is used to instantiate an TrajectoryTransformer model according to the specified arguments, defining the model architecture. Instantiating a config...
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class XLMProphetNetSeq2SeqLMOutput(ModelOutput): """ Base class for sequence-to-sequence language models outputs. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Language modeling loss. logits (`torch.FloatTensor` of shape `(batc...
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class XLMProphetNetSeq2SeqModelOutput(ModelOutput): """ Base class for model encoder's outputs that also contains : pre-computed hidden states that can speed up sequential decoding. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, decoder_sequence_length, hidden_size)`): ...
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class XLMProphetNetDecoderModelOutput(ModelOutput): """ Base class for model's outputs that may also contain a past key/values (to speed up sequential decoding). Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, decoder_sequence_length, hidden_size)`): Sequence of main...
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class XLMProphetNetDecoderLMOutput(ModelOutput): """ Base class for model's outputs that may also contain a past key/values (to speed up sequential decoding). Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Language modeling loss. ...
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class XLMProphetNetPreTrainedModel(PreTrainedModel): config_class = XLMProphetNetConfig base_model_prefix = "prophetnet" supports_gradient_checkpointing = True def _init_weights(self, module): if isinstance(module, nn.Linear): module.weight.data.normal_(mean=0.0, std=self.config.ini...
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class XLMProphetNetPositionalEmbeddings(nn.Embedding): """ This module learns positional embeddings up to a fixed maximum size. Padding ids are ignored by either offsetting based on padding_idx or by setting padding_idx to None and ensuring that the appropriate position ids are passed to the forward fun...
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class XLMProphetNetAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__( self, config: XLMProphetNetConfig, num_attn_heads: int, ): super().__init__() hidden_size = config.hidden_size self.attention_dropout =...
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class XLMProphetNetFeedForward(nn.Module): """ This is the residual two feed-forward layer block based on the original Transformer implementation. """ def __init__(self, config: XLMProphetNetConfig, ffn_dim: int): super().__init__() self.activation_fn = ACT2FN[config.activation_function...
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class XLMProphetNetNgramSelfAttention(nn.Module): def __init__(self, config: XLMProphetNetConfig): super().__init__() self.hidden_size = config.hidden_size self.num_buckets = config.num_buckets self.relative_max_distance = config.relative_max_distance self.num_attn_heads = c...
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class XLMProphetNetEncoderLayer(nn.Module): """ Encoder block for XLMProphetnet """ def __init__(self, config: XLMProphetNetConfig): super().__init__() # 1st residual block self.self_attn = XLMProphetNetAttention(config, config.num_encoder_attention_heads) self.self_attn...
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class XLMProphetNetDecoderLayer(nn.Module): """ Decoder block for XLMProphetnet """ def __init__(self, config: XLMProphetNetConfig): super().__init__() # 1st residual block self.self_attn = XLMProphetNetNgramSelfAttention(config) self.self_attn_layer_norm = LayerNorm(con...
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class XLMProphetNetEncoder(XLMProphetNetPreTrainedModel): r""" word_embeddings (`torch.nn.Embeddings` of shape `(config.vocab_size, config.hidden_size)`, *optional*): The word embedding parameters. This can be used to initialize [`XLMProphetNetEncoder`] with pre-defined word embeddings instead ...
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class XLMProphetNetDecoder(XLMProphetNetPreTrainedModel): r""" word_embeddings (`torch.nn.Embeddings` of shape `(config.vocab_size, config.hidden_size)`, *optional*): The word embedding parameters. This can be used to initialize [`XLMProphetNetEncoder`] with pre-defined word embeddings instead ...
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class XLMProphetNetModel(XLMProphetNetPreTrainedModel): _tied_weights_keys = ["encoder.word_embeddings.weight", "decoder.word_embeddings.weight"] def __init__(self, config: XLMProphetNetConfig): super().__init__(config) self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, ...
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class XLMProphetNetForConditionalGeneration(XLMProphetNetPreTrainedModel): _tied_weights_keys = ["encoder.word_embeddings.weight", "decoder.word_embeddings.weight", "lm_head.weight"] def __init__(self, config: XLMProphetNetConfig): super().__init__(config) self.prophetnet = XLMProphetNetModel(c...
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class XLMProphetNetForCausalLM(XLMProphetNetPreTrainedModel): _tied_weights_keys = [ "prophetnet.word_embeddings.weight", "prophetnet.decoder.word_embeddings.weight", "lm_head.weight", ] def __init__(self, config: XLMProphetNetConfig): # set config for CLM config = c...
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class XLMProphetNetDecoderWrapper(XLMProphetNetPreTrainedModel): """ This is a wrapper class, so that [`XLMProphetNetForCausalLM`] can correctly be loaded from pretrained XLMProphetNet classes. """ def __init__(self, config: XLMProphetNetConfig): super().__init__(config) self.word_...
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class XLMProphetNetTokenizer(PreTrainedTokenizer): """ Adapted from [`RobertaTokenizer`] and [`XLNetTokenizer`]. Based on [SentencePiece](https://github.com/google/sentencepiece). This tokenizer inherits from [`PreTrainedTokenizer`] which contains most of the main methods. Users should refer to thi...
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class XLMProphetNetConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`XLMProphetNetModel`]. It is used to instantiate a XLMProphetNet model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults...
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class QDQBertConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`QDQBertModel`]. It is used to instantiate an QDQBERT model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a sim...
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class QDQBertEmbeddings(nn.Module): """Construct the embeddings from word, position and token_type embeddings.""" def __init__(self, config): super().__init__() self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id) self.position_embe...
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class QDQBertSelfAttention(nn.Module): def __init__(self, config): super().__init__() if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"): raise ValueError( f"The hidden size ({config.hidden_size}) is not a multiple of the num...
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class QDQBertSelfOutput(nn.Module): def __init__(self, config): super().__init__() # Quantize Linear layer self.dense = quant_nn.QuantLinear(config.hidden_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = nn...
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class QDQBertAttention(nn.Module): def __init__(self, config): super().__init__() self.self = QDQBertSelfAttention(config) self.output = QDQBertSelfOutput(config) self.pruned_heads = set() def prune_heads(self, heads): if len(heads) == 0: return heads...
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class QDQBertIntermediate(nn.Module): def __init__(self, config): super().__init__() # Quantize Linear layer self.dense = quant_nn.QuantLinear(config.hidden_size, config.intermediate_size) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hid...
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class QDQBertOutput(nn.Module): def __init__(self, config): super().__init__() # Quantize Linear layer self.dense = quant_nn.QuantLinear(config.intermediate_size, config.hidden_size) self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps) self.dropout = n...
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class QDQBertLayer(nn.Module): def __init__(self, config): super().__init__() self.seq_len_dim = 1 self.attention = QDQBertAttention(config) self.is_decoder = config.is_decoder self.add_cross_attention = config.add_cross_attention if self.add_cross_attention: ...
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class QDQBertEncoder(nn.Module): def __init__(self, config): super().__init__() self.config = config self.layer = nn.ModuleList([QDQBertLayer(config) for _ in range(config.num_hidden_layers)]) self.gradient_checkpointing = False def forward( self, hidden_states, ...
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class QDQBertPooler(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) self.activation = nn.Tanh() def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: # We "pool" the model by simply taking the hi...
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class QDQBertPredictionHeadTransform(nn.Module): def __init__(self, config): super().__init__() self.dense = nn.Linear(config.hidden_size, config.hidden_size) if isinstance(config.hidden_act, str): self.transform_act_fn = ACT2FN[config.hidden_act] else: self.t...
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class QDQBertLMPredictionHead(nn.Module): def __init__(self, config): super().__init__() self.transform = QDQBertPredictionHeadTransform(config) # The output weights are the same as the input embeddings, but there is # an output-only bias for each token. self.decoder = nn.Li...
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class QDQBertOnlyMLMHead(nn.Module): def __init__(self, config): super().__init__() self.predictions = QDQBertLMPredictionHead(config) def forward(self, sequence_output): prediction_scores = self.predictions(sequence_output) return prediction_scores
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class QDQBertOnlyNSPHead(nn.Module): def __init__(self, config): super().__init__() self.seq_relationship = nn.Linear(config.hidden_size, 2) def forward(self, pooled_output): seq_relationship_score = self.seq_relationship(pooled_output) return seq_relationship_score
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class QDQBertPreTrainingHeads(nn.Module): def __init__(self, config): super().__init__() self.predictions = QDQBertLMPredictionHead(config) self.seq_relationship = nn.Linear(config.hidden_size, 2) def forward(self, sequence_output, pooled_output): prediction_scores = self.predic...
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class QDQBertPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = QDQBertConfig load_tf_weights = load_tf_weights_in_qdqbert base_model_prefix = "bert" supports_g...
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class QDQBertModel(QDQBertPreTrainedModel): """ The model can behave as an encoder (with only self-attention) as well as a decoder, in which case a layer of cross-attention is added between the self-attention layers, following the architecture described in [Attention is all you need](https://arxiv.org/...
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class QDQBertLMHeadModel(QDQBertPreTrainedModel): _tied_weights_keys = ["predictions.decoder.weight", "predictions.decoder.bias"] def __init__(self, config): super().__init__(config) if not config.is_decoder: logger.warning("If you want to use `QDQBertLMHeadModel` as a standalone, ...
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class QDQBertForMaskedLM(QDQBertPreTrainedModel): _tied_weights_keys = ["predictions.decoder.weight", "predictions.decoder.bias"] def __init__(self, config): super().__init__(config) if config.is_decoder: logger.warning( "If you want to use `QDQBertForMaskedLM` make...
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class QDQBertForNextSentencePrediction(QDQBertPreTrainedModel): def __init__(self, config): super().__init__(config) self.bert = QDQBertModel(config) self.cls = QDQBertOnlyNSPHead(config) # Initialize weights and apply final processing self.post_init() @add_start_docst...
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class QDQBertForSequenceClassification(QDQBertPreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.config = config self.bert = QDQBertModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.c...
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class QDQBertForMultipleChoice(QDQBertPreTrainedModel): def __init__(self, config): super().__init__(config) self.bert = QDQBertModel(config) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifier = nn.Linear(config.hidden_size, 1) # Initialize weights and ap...
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class QDQBertForTokenClassification(QDQBertPreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.bert = QDQBertModel(config, add_pooling_layer=False) self.dropout = nn.Dropout(config.hidden_dropout_prob) self.classifi...
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class QDQBertForQuestionAnswering(QDQBertPreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.bert = QDQBertModel(config, add_pooling_layer=False) self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels) #...
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class NatConfig(BackboneConfigMixin, PretrainedConfig): r""" This is the configuration class to store the configuration of a [`NatModel`]. It is used to instantiate a Nat model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yie...
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class NatEncoderOutput(ModelOutput): """ Nat encoder's outputs, with potential hidden states and attentions. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model. ...
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class NatModelOutput(ModelOutput): """ Nat model's outputs that also contains a pooling of the last hidden states. Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the output of the last layer of the model....
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class NatImageClassifierOutput(ModelOutput): """ Nat outputs for image classification. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification (or regression if config.num_labels==1) loss. logits (`torch.FloatTensor` of sh...
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class NatEmbeddings(nn.Module): """ Construct the patch and position embeddings. """ def __init__(self, config): super().__init__() self.patch_embeddings = NatPatchEmbeddings(config) self.norm = nn.LayerNorm(config.embed_dim) self.dropout = nn.Dropout(config.hidden_dro...
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class NatPatchEmbeddings(nn.Module): """ This class turns `pixel_values` of shape `(batch_size, num_channels, height, width)` into the initial `hidden_states` (patch embeddings) of shape `(batch_size, height, width, hidden_size)` to be consumed by a Transformer. """ def __init__(self, config): ...
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class NatDownsampler(nn.Module): """ Convolutional Downsampling Layer. Args: dim (`int`): Number of input channels. norm_layer (`nn.Module`, *optional*, defaults to `nn.LayerNorm`): Normalization layer class. """ def __init__(self, dim: int, norm_layer: nn.M...
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class NatDropPath(nn.Module): """Drop paths (Stochastic Depth) per sample (when applied in main path of residual blocks).""" def __init__(self, drop_prob: Optional[float] = None) -> None: super().__init__() self.drop_prob = drop_prob def forward(self, hidden_states: torch.Tensor) -> torch....
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class NeighborhoodAttention(nn.Module): def __init__(self, config, dim, num_heads, kernel_size): super().__init__() if dim % num_heads != 0: raise ValueError( f"The hidden size ({dim}) is not a multiple of the number of attention heads ({num_heads})" ) ...
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class NeighborhoodAttentionOutput(nn.Module): def __init__(self, config, dim): super().__init__() self.dense = nn.Linear(dim, dim) self.dropout = nn.Dropout(config.attention_probs_dropout_prob) def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor: ...
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class NeighborhoodAttentionModule(nn.Module): def __init__(self, config, dim, num_heads, kernel_size): super().__init__() self.self = NeighborhoodAttention(config, dim, num_heads, kernel_size) self.output = NeighborhoodAttentionOutput(config, dim) self.pruned_heads = set() def p...
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class NatIntermediate(nn.Module): def __init__(self, config, dim): super().__init__() self.dense = nn.Linear(dim, int(config.mlp_ratio * dim)) if isinstance(config.hidden_act, str): self.intermediate_act_fn = ACT2FN[config.hidden_act] else: self.intermediate_a...
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class NatOutput(nn.Module): def __init__(self, config, dim): super().__init__() self.dense = nn.Linear(int(config.mlp_ratio * dim), dim) self.dropout = nn.Dropout(config.hidden_dropout_prob) def forward(self, hidden_states: torch.Tensor) -> torch.Tensor: hidden_states = self.den...
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class NatLayer(nn.Module): def __init__(self, config, dim, num_heads, drop_path_rate=0.0): super().__init__() self.chunk_size_feed_forward = config.chunk_size_feed_forward self.kernel_size = config.kernel_size self.layernorm_before = nn.LayerNorm(dim, eps=config.layer_norm_eps) ...
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class NatStage(nn.Module): def __init__(self, config, dim, depth, num_heads, drop_path_rate, downsample): super().__init__() self.config = config self.dim = dim self.layers = nn.ModuleList( [ NatLayer( config=config, ...
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class NatEncoder(nn.Module): def __init__(self, config): super().__init__() self.num_levels = len(config.depths) self.config = config dpr = [x.item() for x in torch.linspace(0, config.drop_path_rate, sum(config.depths))] self.levels = nn.ModuleList( [ ...
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class NatPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = NatConfig base_model_prefix = "nat" main_input_name = "pixel_values" def _init_weights(self, module...
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class NatModel(NatPreTrainedModel): def __init__(self, config, add_pooling_layer=True): super().__init__(config) requires_backends(self, ["natten"]) self.config = config self.num_levels = len(config.depths) self.num_features = int(config.embed_dim * 2 ** (self.num_levels - ...
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class NatForImageClassification(NatPreTrainedModel): def __init__(self, config): super().__init__(config) requires_backends(self, ["natten"]) self.num_labels = config.num_labels self.nat = NatModel(config) # Classifier head self.classifier = ( nn.Linear...
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class NatBackbone(NatPreTrainedModel, BackboneMixin): def __init__(self, config): super().__init__(config) super()._init_backbone(config) requires_backends(self, ["natten"]) self.embeddings = NatEmbeddings(config) self.encoder = NatEncoder(config) self.num_features ...
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class OpenLlamaConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`OpenLlamaModel`]. It is used to instantiate an Open-Llama model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yiel...
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class OpenLlamaRMSNorm(nn.Module): def __init__(self, hidden_size, eps=1e-6): """ OpenLlamaRMSNorm is equivalent to T5LayerNorm """ super().__init__() self.weight = nn.Parameter(torch.ones(hidden_size)) self.variance_epsilon = eps def forward(self, hidden_states)...
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class OpenLlamaRotaryEmbedding(nn.Module): def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None): super().__init__() self.dim = dim self.max_position_embeddings = max_position_embeddings self.base = base inv_freq = 1.0 / (self.base ** (torch.arange(0...
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class OpenLlamaLinearScalingRotaryEmbedding(OpenLlamaRotaryEmbedding): """OpenLlamaRotaryEmbedding extended with linear scaling. Credits to the Reddit user /u/kaiokendev""" def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0): self.scaling_factor = scaling_...
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class OpenLlamaDynamicNTKScalingRotaryEmbedding(OpenLlamaRotaryEmbedding): """OpenLlamaRotaryEmbedding extended with Dynamic NTK scaling. Credits to the Reddit users /u/bloc97 and /u/emozilla""" def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0): self.sca...
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class OpenLlamaMLP(nn.Module): def __init__( self, hidden_size: int, intermediate_size: int, hidden_act: str, dropout_prob: float, ): super().__init__() self.gate_proj = nn.Linear(hidden_size, intermediate_size, bias=False) self.down_proj = nn.Line...
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class OpenLlamaAttention(nn.Module): """Multi-headed attention from 'Attention Is All You Need' paper""" def __init__(self, config: OpenLlamaConfig): super().__init__() self.config = config self.hidden_size = config.hidden_size self.num_heads = config.num_attention_heads ...
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class OpenLlamaDecoderLayer(nn.Module): def __init__(self, config: OpenLlamaConfig): super().__init__() self.hidden_size = config.hidden_size self.self_attn = OpenLlamaAttention(config=config) self.mlp = OpenLlamaMLP( hidden_size=self.hidden_size, intermediate...
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class OpenLlamaPreTrainedModel(PreTrainedModel): config_class = OpenLlamaConfig base_model_prefix = "model" supports_gradient_checkpointing = True _no_split_modules = ["OpenLlamaDecoderLayer"] def _init_weights(self, module): std = self.config.initializer_range if isinstance(module,...
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class OpenLlamaModel(OpenLlamaPreTrainedModel): """ Transformer decoder consisting of *config.num_hidden_layers* layers. Each layer is a [`OpenLlamaDecoderLayer`] Args: config: OpenLlamaConfig """ def __init__(self, config: OpenLlamaConfig): super().__init__(config) self.pa...
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class OpenLlamaForCausalLM(OpenLlamaPreTrainedModel): def __init__(self, config): super().__init__(config) self.model = OpenLlamaModel(config) if config.shared_input_output_embedding: self.lm_head = None else: self.lm_head = nn.Linear(config.hidden_size, confi...
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class OpenLlamaForSequenceClassification(OpenLlamaPreTrainedModel): def __init__(self, config): super().__init__(config) self.num_labels = config.num_labels self.model = OpenLlamaModel(config) self.score = nn.Linear(config.hidden_size, self.num_labels, bias=False) # Initiali...
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class PositionalEmbedding(nn.Module): def __init__(self, demb): super().__init__() self.demb = demb inv_freq = 1 / (10000 ** (torch.arange(0.0, demb, 2.0) / demb)) self.register_buffer("inv_freq", inv_freq) def forward(self, pos_seq, bsz=None): sinusoid_inp = torch.out...
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class PositionwiseFF(nn.Module): def __init__(self, d_model, d_inner, dropout, pre_lnorm=False, layer_norm_epsilon=1e-5): super().__init__() self.d_model = d_model self.d_inner = d_inner self.dropout = dropout self.CoreNet = nn.Sequential( nn.Linear(d_model, d_i...
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class RelPartialLearnableMultiHeadAttn(nn.Module): def __init__( self, n_head, d_model, d_head, dropout, dropatt=0, pre_lnorm=False, r_r_bias=None, r_w_bias=None, layer_norm_epsilon=1e-5, ): super().__init__() self....
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class RelPartialLearnableDecoderLayer(nn.Module): def __init__(self, n_head, d_model, d_head, d_inner, dropout, layer_norm_epsilon=1e-5, **kwargs): super().__init__() self.dec_attn = RelPartialLearnableMultiHeadAttn( n_head, d_model, d_head, dropout, layer_norm_epsilon=layer_norm_epsilo...
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class AdaptiveEmbedding(nn.Module): def __init__(self, n_token, d_embed, d_proj, cutoffs, div_val=1, sample_softmax=False): super().__init__() self.n_token = n_token self.d_embed = d_embed self.cutoffs = cutoffs + [n_token] self.div_val = div_val self.d_proj = d_pro...
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class TransfoXLPreTrainedModel(PreTrainedModel): """ An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained models. """ config_class = TransfoXLConfig load_tf_weights = load_tf_weights_in_transfo_xl base_model_prefix = "transformer" ...
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class TransfoXLModelOutput(ModelOutput): """ Base class for model's outputs that may also contain a past key/values (to speed up sequential decoding). Args: last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`): Sequence of hidden-states at the ou...
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class TransfoXLSequenceClassifierOutputWithPast(ModelOutput): """ Base class for outputs of sentence classification models. Args: loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided): Classification (or regression if config.num_labels==1) loss. ...
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class TransfoXLLMHeadModelOutput(ModelOutput): """ Base class for model's outputs that may also contain a past key/values (to speed up sequential decoding). Args: losses (`torch.FloatTensor` of shape *(batch_size, sequence_length-1)*, *optional*, returned when `labels` is provided): Lan...
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