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unitorch.cli.models.mbart¤

MBartProcessor¤

Tip

core/process/mbart is the section for configuration of MBartProcessor.

Bases: MBartProcessor

Processor for the MBart model.

Initialize the MBartProcessor.

Parameters:

Name Type Description Default
vocab_path str

The path to the vocabulary file.

 required
max_seq_length int

The maximum input sequence length. Defaults to 128.

 128
max_gen_seq_length int

The maximum generated sequence length. Defaults to 48.

 48
special_input_ids Dict

Special input IDs. Defaults to an empty dictionary.

 dict()
Source code in src/unitorch/cli/models/mbart/processing.py 
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def __init__(
    self,
    vocab_path: str,
    max_seq_length: Optional[int] = 128,
    max_gen_seq_length: Optional[int] = 48,
    special_input_ids: Optional[Dict] = dict(),
):
    """
    Initialize the MBartProcessor.

    Args:
        vocab_path (str): The path to the vocabulary file.
        max_seq_length (int, optional): The maximum input sequence length. Defaults to 128.
        max_gen_seq_length (int, optional): The maximum generated sequence length. Defaults to 48.
        special_input_ids (Dict, optional): Special input IDs. Defaults to an empty dictionary.
    """
    super().__init__(
        vocab_path=vocab_path,
        max_seq_length=max_seq_length,
        max_gen_seq_length=max_gen_seq_length,
        special_input_ids=special_input_ids,
    )

from_core_configure classmethod ¤

from_core_configure(config, **kwargs)

Create an instance of MBartProcessor from a core configuration.

Parameters:

Name Type Description Default
config

The core configuration.

 required
**kwargs

Additional keyword arguments.

 {}

Returns:

Name Type Description
MBartProcessor

An instance of MBartProcessor.
Source code in src/unitorch/cli/models/mbart/processing.py 
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@classmethod
@add_default_section_for_init("core/process/mbart")
def from_core_configure(cls, config, **kwargs):
    """
    Create an instance of MBartProcessor from a core configuration.

    Args:
        config: The core configuration.
        **kwargs: Additional keyword arguments.

    Returns:
        MBartProcessor: An instance of MBartProcessor.
    """
    config.set_default_section("core/process/mbart")
    pretrained_name = config.getoption("pretrained_name", "mbart-large-cc25")
    vocab_path = config.getoption("vocab_path", None)
    vocab_path = pop_value(
        vocab_path,
        nested_dict_value(pretrained_mbart_infos, pretrained_name, "vocab"),
    )
    vocab_path = cached_path(vocab_path)

    return {
        "vocab_path": vocab_path,
    }

MBartForGeneration¤

Tip

core/model/generation/mbart is the section for configuration of MBartForGeneration.

Bases: MBartForGeneration

MBart model for generation tasks.

Initialize the MBartForGeneration model.

Parameters:

Name Type Description Default
config_path str

The path to the model configuration file.

 required
freeze_input_embedding bool

Whether to freeze the input embeddings. Defaults to True.

 True
gradient_checkpointing bool

Whether to use gradient checkpointing. Defaults to False.

 False
Source code in src/unitorch/cli/models/mbart/modeling.py 
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def __init__(
    self,
    config_path: str,
    freeze_input_embedding: Optional[bool] = True,
    gradient_checkpointing: Optional[bool] = False,
):
    """
    Initialize the MBartForGeneration model.

    Args:
        config_path (str): The path to the model configuration file.
        freeze_input_embedding (bool, optional): Whether to freeze the input embeddings. Defaults to True.
        gradient_checkpointing (bool, optional): Whether to use gradient checkpointing. Defaults to False.
    """
    super().__init__(
        config_path=config_path,
        freeze_input_embedding=freeze_input_embedding,
        gradient_checkpointing=gradient_checkpointing,
    )

forward ¤

forward(
    input_ids: Tensor,
    attention_mask: Tensor,
    decoder_input_ids: Tensor,
    decoder_attention_mask: Tensor,
)

Perform a forward pass through the model.

Parameters:

Name Type Description Default
input_ids Tensor

Input token IDs.

 required
attention_mask Tensor

Attention mask.

 required
decoder_input_ids Tensor

Decoder input token IDs.

 required
decoder_attention_mask Tensor

Decoder attention mask.

 required

Returns:

Name Type Description
GenerationOutputs

The generation outputs.
Source code in src/unitorch/cli/models/mbart/modeling.py 
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@autocast(device_type=("cuda" if torch.cuda.is_available() else "cpu"))
def forward(
    self,
    input_ids: torch.Tensor,
    attention_mask: torch.Tensor,
    decoder_input_ids: torch.Tensor,
    decoder_attention_mask: torch.Tensor,
):
    """
    Perform a forward pass through the model.

    Args:
        input_ids (torch.Tensor): Input token IDs.
        attention_mask (torch.Tensor): Attention mask.
        decoder_input_ids (torch.Tensor): Decoder input token IDs.
        decoder_attention_mask (torch.Tensor): Decoder attention mask.

    Returns:
        GenerationOutputs: The generation outputs.
    """
    outputs = super().forward(
        input_ids=input_ids,
        attention_mask=attention_mask,
        decoder_input_ids=decoder_input_ids,
        decoder_attention_mask=decoder_attention_mask,
    )
    return GenerationOutputs(sequences=outputs)

from_core_configure classmethod ¤

from_core_configure(config, **kwargs)

Create an instance of MBartForGeneration from a core configuration.

Parameters:

Name Type Description Default
config

The core configuration.

 required
**kwargs

Additional keyword arguments.

 {}

Returns:

Name Type Description
MBartForGeneration

An instance of MBartForGeneration.
Source code in src/unitorch/cli/models/mbart/modeling.py 
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@classmethod
@add_default_section_for_init("core/model/generation/mbart")
def from_core_configure(cls, config, **kwargs):
    """
    Create an instance of MBartForGeneration from a core configuration.

    Args:
        config: The core configuration.
        **kwargs: Additional keyword arguments.

    Returns:
        MBartForGeneration: An instance of MBartForGeneration.
    """
    config.set_default_section("core/model/generation/mbart")
    pretrained_name = config.getoption("pretrained_name", "mbart-large-cc25")
    config_path = config.getoption("config_path", None)
    config_path = pop_value(
        config_path,
        nested_dict_value(pretrained_mbart_infos, pretrained_name, "config"),
    )

    config_path = cached_path(config_path)
    freeze_input_embedding = config.getoption("freeze_input_embedding", True)
    gradient_checkpointing = config.getoption("gradient_checkpointing", False)

    inst = cls(
        config_path,
        freeze_input_embedding=freeze_input_embedding,
        gradient_checkpointing=gradient_checkpointing,
    )
    pretrained_weight_path = config.getoption("pretrained_weight_path", None)
    weight_path = pop_value(
        pretrained_weight_path,
        nested_dict_value(pretrained_mbart_infos, pretrained_name, "weight"),
        check_none=False,
    )
    if weight_path is not None:
        inst.from_pretrained(weight_path)

    return inst

generate ¤

generate(
    input_ids: Tensor,
    num_beams: Optional[int] = 5,
    decoder_start_token_id: Optional[int] = 2,
    decoder_end_token_id: Optional[
        Union[int, List[int]]
    ] = 2,
    num_return_sequences: Optional[int] = 1,
    min_gen_seq_length: Optional[int] = 0,
    max_gen_seq_length: Optional[int] = 48,
    repetition_penalty: Optional[float] = 1.0,
    no_repeat_ngram_size: Optional[int] = 0,
    early_stopping: Optional[bool] = True,
    length_penalty: Optional[float] = 1.0,
    num_beam_groups: Optional[int] = 1,
    diversity_penalty: Optional[float] = 0.0,
    do_sample: Optional[bool] = False,
    temperature: Optional[float] = 1.0,
    top_k: Optional[int] = 50,
    top_p: Optional[float] = 1.0,
)

Generate sequences using the MBart model.

Parameters:

Name Type Description Default
input_ids Tensor

Input token IDs.

 required
num_beams int

Number of beams for beam search. Defaults to 5.

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decoder_start_token_id int

Decoder start token ID. Defaults to 0.

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decoder_end_token_id int or List[int]

The ID(s) of the decoder end token(s). Defaults to 1.

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num_return_sequences int

Number of generated sequences to return. Defaults to 1.

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min_gen_seq_length int

Minimum generation sequence length. Defaults to 0.

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max_gen_seq_length int

Maximum generation sequence length. Defaults to 48.

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repetition_penalty float

Repetition penalty. Defaults to 1.0.

 1.0
no_repeat_ngram_size int

Size of n-grams to prevent repetition. Defaults to 0.

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early_stopping bool

Whether to perform early stopping. Defaults to True.

 True
length_penalty float

Length penalty. Defaults to 1.0.

 1.0
num_beam_groups int

Number of beam groups for diverse beam search. Defaults to 1.

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diversity_penalty float

Diversity penalty for diverse beam search. Defaults to 0.0.

 0.0
do_sample bool

Whether to use sampling for generation. Defaults to False.

 False
temperature float

Sampling temperature. Defaults to 1.0.

 1.0
top_k int

Top-k sampling parameter. Defaults to 50.

 50
top_p float

Top-p sampling parameter. Defaults to 1.0.

 1.0

Returns:

Name Type Description
GenerationOutputs

The generation outputs.
Source code in src/unitorch/cli/models/mbart/modeling.py 
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@add_default_section_for_function("core/model/generation/mbart")
@torch.no_grad()
@autocast(device_type=("cuda" if torch.cuda.is_available() else "cpu"))
def generate(
    self,
    input_ids: torch.Tensor,
    num_beams: Optional[int] = 5,
    decoder_start_token_id: Optional[int] = 2,
    decoder_end_token_id: Optional[Union[int, List[int]]] = 2,
    num_return_sequences: Optional[int] = 1,
    min_gen_seq_length: Optional[int] = 0,
    max_gen_seq_length: Optional[int] = 48,
    repetition_penalty: Optional[float] = 1.0,
    no_repeat_ngram_size: Optional[int] = 0,
    early_stopping: Optional[bool] = True,
    length_penalty: Optional[float] = 1.0,
    num_beam_groups: Optional[int] = 1,
    diversity_penalty: Optional[float] = 0.0,
    do_sample: Optional[bool] = False,
    temperature: Optional[float] = 1.0,
    top_k: Optional[int] = 50,
    top_p: Optional[float] = 1.0,
):
    """
    Generate sequences using the MBart model.

    Args:
        input_ids (torch.Tensor): Input token IDs.
        num_beams (int, optional): Number of beams for beam search. Defaults to 5.
        decoder_start_token_id (int, optional): Decoder start token ID. Defaults to 0.
        decoder_end_token_id (int or List[int], optional): The ID(s) of the decoder end token(s). Defaults to 1.
        num_return_sequences (int, optional): Number of generated sequences to return. Defaults to 1.
        min_gen_seq_length (int, optional): Minimum generation sequence length. Defaults to 0.
        max_gen_seq_length (int, optional): Maximum generation sequence length. Defaults to 48.
        repetition_penalty (float, optional): Repetition penalty. Defaults to 1.0.
        no_repeat_ngram_size (int, optional): Size of n-grams to prevent repetition. Defaults to 0.
        early_stopping (bool, optional): Whether to perform early stopping. Defaults to True.
        length_penalty (float, optional): Length penalty. Defaults to 1.0.
        num_beam_groups (int, optional): Number of beam groups for diverse beam search. Defaults to 1.
        diversity_penalty (float, optional): Diversity penalty for diverse beam search. Defaults to 0.0.
        do_sample (bool, optional): Whether to use sampling for generation. Defaults to False.
        temperature (float, optional): Sampling temperature. Defaults to 1.0.
        top_k (int, optional): Top-k sampling parameter. Defaults to 50.
        top_p (float, optional): Top-p sampling parameter. Defaults to 1.0.

    Returns:
        GenerationOutputs: The generation outputs.
    """
    outputs = super().generate(
        input_ids,
        num_beams=num_beams,
        decoder_start_token_id=decoder_start_token_id,
        decoder_end_token_id=decoder_end_token_id,
        num_return_sequences=num_return_sequences,
        min_gen_seq_length=min_gen_seq_length,
        max_gen_seq_length=max_gen_seq_length,
        repetition_penalty=repetition_penalty,
        no_repeat_ngram_size=no_repeat_ngram_size,
        early_stopping=early_stopping,
        length_penalty=length_penalty,
        num_beam_groups=num_beam_groups,
        diversity_penalty=diversity_penalty,
        do_sample=do_sample,
        temperature=temperature,
        top_k=top_k,
        top_p=top_p,
    )

    return GenerationOutputs(
        sequences=outputs.sequences,
        sequences_scores=outputs.sequences_scores,
    )