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fix cache handling and causality for cross attention
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eustlb authored and Eustache Le Bihan committed Dec 15, 2024
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236 changes: 236 additions & 0 deletions src/transformers/models/moonshine/configuration_moonshine.py
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from ...configuration_utils import PretrainedConfig


class MoonshineConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`MoonshineModel`]. It is used to instantiate a Moonshine
model according to the specified arguments, defining the model architecture. Instantiating a configuration with the
defaults will yield a similar configuration to that of the Moonshine
[UsefulSensors/moonshine](https://huggingface.co/UsefulSensors/moonshine).
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 32768):
Vocabulary size of the Moonshine model. Defines the number of different tokens that can be represented by the
`inputs_ids` passed when calling [`MoonshineModel`].
hidden_size (`int`, *optional*, defaults to 288):
Dimension of the hidden representations.
intermediate_size (`int`, *optional*):
Dimension of the MLP representations.
num_hidden_layers (`int`, *optional*, defaults to 6):
Number of hidden layers in the Transformer encoder and decoder.
num_attention_heads (`int`, *optional*, defaults to 8):
Number of attention heads for each attention layer in the Transformer encoder and decoder.
num_key_value_heads (`int`, *optional*):
This is the number of key_value heads that should be used to implement Grouped Query Attention. If
`num_key_value_heads=num_attention_heads`, the model will use Multi Head Attention (MHA), if
`num_key_value_heads=1` the model will use Multi Query Attention (MQA) otherwise GQA is used. When
converting a multi-head checkpoint to a GQA checkpoint, each group key and value head should be constructed
by meanpooling all the original heads within that group. For more details checkout [this
paper](https://arxiv.org/pdf/2305.13245.pdf). If it is not specified, will default to
`num_attention_heads`.
encoder_hidden_act (`str` or `function`, *optional*, defaults to `"gelu"`):
The non-linear activation function (function or string) in the encoder.
decoder_hidden_act (`str` or `function`, *optional*, defaults to `"silu"`):
The non-linear activation function (function or string) in the decoder.
max_position_embeddings (`int`, *optional*, defaults to 2048):
The maximum sequence length that this model might ever be used with. TODO: check this
initializer_range (`float`, *optional*, defaults to 0.02):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
layer_norm_eps (`float`, *optional*, defaults to 1e-5):
The epsilon used by the layer normalization layers.
decoder_start_token_id (`int`, *optional*, defaults to 1):
Corresponds to the "<|startoftranscript|>" token, which is automatically used when no `decoder_input_ids`
are provided to the `generate` function. It is used to guide the model`s generation process depending on
the task.
use_cache (`bool`, *optional*, defaults to `True`):
Whether or not the model should return the last key/values attentions (not used by all models).
is_encoder_decoder (`bool`, *optional*, defaults to `True`):
Whether the model is used as an encoder/decoder or not.
rope_theta (`float`, *optional*, defaults to 10000.0):
The base period of the RoPE embeddings. TODO: check this
partial_rotary_factor (`float`, *optional*, defaults to 0.5):
Percentage of the query and keys which will have rotary embedding. TODO: check this
ff_mult (`int`, *optional*, defaults to 4):
Factor by which to scale the intermediate size.
attention_bias (`bool`, *optional*, defaults to `False`):
Whether to use a bias in the query, key, value and output projection layers during self-attention.
attention_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention probabilities.
qk_layernorm (`bool`, *optional*, defaults to `False`):
Whether or not to normalize the Queries and Keys after projecting the hidden states.
rope_scaling (`Dict`, *optional*):
Dictionary containing the scaling configuration for the RoPE embeddings. NOTE: if you apply new rope type
and you expect the model to work on longer `max_position_embeddings`, we recommend you to update this value
accordingly.
Expected contents:
`rope_type` (`str`):
The sub-variant of RoPE to use. Can be one of ['default', 'linear', 'dynamic', 'yarn', 'longrope',
'llama3'], with 'default' being the original RoPE implementation.
`factor` (`float`, *optional*):
Used with all rope types except 'default'. The scaling factor to apply to the RoPE embeddings. In
most scaling types, a `factor` of x will enable the model to handle sequences of length x *
original maximum pre-trained length.
`original_max_position_embeddings` (`int`, *optional*):
Used with 'dynamic', 'longrope' and 'llama3'. The original max position embeddings used during
pretraining.
`attention_factor` (`float`, *optional*):
Used with 'yarn' and 'longrope'. The scaling factor to be applied on the attention
computation. If unspecified, it defaults to value recommended by the implementation, using the
`factor` field to infer the suggested value.
`beta_fast` (`float`, *optional*):
Only used with 'yarn'. Parameter to set the boundary for extrapolation (only) in the linear
ramp function. If unspecified, it defaults to 32.
`beta_slow` (`float`, *optional*):
Only used with 'yarn'. Parameter to set the boundary for interpolation (only) in the linear
ramp function. If unspecified, it defaults to 1.
`short_factor` (`List[float]`, *optional*):
Only used with 'longrope'. The scaling factor to be applied to short contexts (<
`original_max_position_embeddings`). Must be a list of numbers with the same length as the hidden
size divided by the number of attention heads divided by 2
`long_factor` (`List[float]`, *optional*):
Only used with 'longrope'. The scaling factor to be applied to long contexts (<
`original_max_position_embeddings`). Must be a list of numbers with the same length as the hidden
size divided by the number of attention heads divided by 2
`low_freq_factor` (`float`, *optional*):
Only used with 'llama3'. Scaling factor applied to low frequency components of the RoPE
`high_freq_factor` (`float`, *optional*):
Only used with 'llama3'. Scaling factor applied to high frequency components of the RoPE
bos_token_id (`int`, *optional*, defaults to 1):
Denotes beginning of sequences token id.
eos_token_id (`int`, *optional*, defaults to 2):
Denotes end of sequences token id.
apply_spec_augment (`bool`, *optional*, defaults to `False`):
Whether to apply *SpecAugment* data augmentation to the outputs of the feature encoder. For reference see
[SpecAugment: A Simple Data Augmentation Method for Automatic Speech
Recognition](https://arxiv.org/abs/1904.08779).
mask_time_prob (`float`, *optional*, defaults to 0.05):
Percentage (between 0 and 1) of all feature vectors along the time axis which will be masked. The masking
procecure generates `mask_time_prob*len(time_axis)/mask_time_length` independent masks over the axis. If
reasoning from the propability of each feature vector to be chosen as the start of the vector span to be
masked, *mask_time_prob* should be `prob_vector_start*mask_time_length`. Note that overlap may decrease the
actual percentage of masked vectors. This is only relevant if `apply_spec_augment == True`.
mask_time_length (`int`, *optional*, defaults to 10):
Length of vector span along the time axis.
mask_time_min_masks (`int`, *optional*, defaults to 2),:
The minimum number of masks of length `mask_feature_length` generated along the time axis, each time step,
irrespectively of `mask_feature_prob`. Only relevant if ''mask_time_prob*len(time_axis)/mask_time_length <
mask_time_min_masks''
mask_feature_prob (`float`, *optional*, defaults to 0.0):
Percentage (between 0 and 1) of all feature vectors along the feature axis which will be masked. The
masking procecure generates `mask_feature_prob*len(feature_axis)/mask_time_length` independent masks over
the axis. If reasoning from the propability of each feature vector to be chosen as the start of the vector
span to be masked, *mask_feature_prob* should be `prob_vector_start*mask_feature_length`. Note that overlap
may decrease the actual percentage of masked vectors. This is only relevant if `apply_spec_augment is
True`.
mask_feature_length (`int`, *optional*, defaults to 10):
Length of vector span along the feature axis.
mask_feature_min_masks (`int`, *optional*, defaults to 0),:
The minimum number of masks of length `mask_feature_length` generated along the feature axis, each time
step, irrespectively of `mask_feature_prob`. Only relevant if
`mask_feature_prob*len(feature_axis)/mask_feature_length < mask_feature_min_masks`.
Example:
```python
>>> from transformers import MoonshineModel, MoonshineConfig
>>> # Initializing a Moonshine style configuration
>>> configuration = MoonshineConfig().from_pretrained("UsefulSensors/moonshine")
>>> # Initializing a model from the configuration
>>> model = MoonshineModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""

model_type = "moonshine"
keys_to_ignore_at_inference = ["past_key_values"]

def __init__(
self,
vocab_size=32768,
hidden_size=288,
intermediate_size=None,
num_hidden_layers=6,
num_attention_heads=8,
num_key_value_heads=None,
encoder_hidden_act="gelu",
decoder_hidden_act="silu",
max_position_embeddings=2048,
initializer_range=0.02,
layer_norm_eps=1e-5,
decoder_start_token_id=1,
use_cache=True,
is_encoder_decoder=True,
rope_theta=10000.0,
partial_rotary_factor=0.5,
attention_bias=False,
attention_dropout=0.0,
qk_layernorm=False,
rope_scaling=None,
ff_mult=4,
bos_token_id=1,
eos_token_id=2,
apply_spec_augment=False,
mask_time_prob=0.05,
mask_time_length=10,
mask_time_min_masks=2,
mask_feature_prob=0.0,
mask_feature_length=10,
mask_feature_min_masks=0,
**kwargs,
):
self.vocab_size = vocab_size
self.hidden_size = hidden_size
self.intermediate_size = intermediate_size
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads

if num_key_value_heads is None:
num_key_value_heads = num_attention_heads

self.num_key_value_heads = num_key_value_heads
self.encoder_hidden_act = encoder_hidden_act
self.decoder_hidden_act = decoder_hidden_act
self.max_position_embeddings = max_position_embeddings
self.initializer_range = initializer_range
self.layer_norm_eps = layer_norm_eps
self.decoder_start_token_id = decoder_start_token_id
self.use_cache = use_cache
self.is_encoder_decoder = is_encoder_decoder
self.rope_theta = rope_theta
self.partial_rotary_factor = partial_rotary_factor

self.attention_bias = attention_bias
self.attention_dropout = attention_dropout
self.qk_layernorm = qk_layernorm
self.rope_scaling = rope_scaling
self.ff_mult = ff_mult

# fine-tuning config parameters for SpecAugment: https://arxiv.org/abs/1904.08779
self.apply_spec_augment = apply_spec_augment
self.mask_time_prob = mask_time_prob
self.mask_time_length = mask_time_length
self.mask_time_min_masks = mask_time_min_masks
self.mask_feature_prob = mask_feature_prob
self.mask_feature_length = mask_feature_length
self.mask_feature_min_masks = mask_feature_min_masks

super().__init__(
bos_token_id=bos_token_id,
eos_token_id=eos_token_id,
is_encoder_decoder=is_encoder_decoder,
decoder_start_token_id=decoder_start_token_id,
**kwargs,
)
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