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- # coding=utf-8
- # Copyright 2025 Arcee AI and the HuggingFace Inc. team. All rights reserved.
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- """PyTorch Arcee model."""
- from transformers.utils import auto_docstring, logging
- from ..llama.configuration_llama import LlamaConfig
- from ..llama.modeling_llama import (
- LlamaForCausalLM,
- LlamaForQuestionAnswering,
- LlamaForSequenceClassification,
- LlamaForTokenClassification,
- )
- from ..nemotron.modeling_nemotron import NemotronMLP
- logger = logging.get_logger(__name__)
- class ArceeConfig(LlamaConfig):
- r"""
- This is the configuration class to store the configuration of a [`ArceeModel`]. It is used to instantiate an Arcee
- 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 AFM-4.5B-Base.
- Pre-trained weights are available at
- [arcee-ai/AFM-4.5B](https://huggingface.co/arcee-ai/AFM-4.5B)
- and were used to build the examples below.
- 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 32000):
- Vocabulary size of the Arcee model. Defines the number of different tokens that can be represented by the
- `inputs_ids` passed when calling [`ArceeModel`]
- hidden_size (`int`, *optional*, defaults to 2560):
- Dimension of the hidden representations.
- intermediate_size (`int`, *optional*, defaults to 18432):
- Dimension of the MLP representations.
- num_hidden_layers (`int`, *optional*, defaults to 32):
- Number of hidden layers in the Transformer decoder.
- num_attention_heads (`int`, *optional*, defaults to 32):
- Number of attention heads for each attention layer in the Transformer 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://huggingface.co/papers/2305.13245). If it is not specified, will default to
- `num_attention_heads`.
- hidden_act (`str` or `function`, *optional*, defaults to `"relu2"`):
- The non-linear activation function (function or string) in the decoder.
- max_position_embeddings (`int`, *optional*, defaults to 4096):
- The maximum sequence length that this model might ever be used with. AFM-4.5B-Base supports up to 16384 tokens.
- initializer_range (`float`, *optional*, defaults to 0.02):
- The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
- rms_norm_eps (`float`, *optional*, defaults to 1e-05):
- The epsilon used by the rms normalization layers.
- use_cache (`bool`, *optional*, defaults to `True`):
- Whether or not the model should return the last key/values attentions (not used by all models). Only
- relevant if `config.is_decoder=True`.
- pad_token_id (`int`, *optional*):
- Padding token id.
- bos_token_id (`int`, *optional*, defaults to 128000):
- Beginning of stream token id.
- eos_token_id (`int`, *optional*, defaults to 128001):
- End of stream token id.
- tie_word_embeddings (`bool`, *optional*, defaults to `False`):
- Whether to tie weight embeddings
- rope_theta (`float`, *optional*, defaults to 10000.0):
- The base period of the RoPE embeddings.
- 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', 'yarn'], 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 'yarn'. The original max position embeddings used during pretraining.
- `attention_factor` (`float`, *optional*):
- Used with 'yarn'. 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.
- 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.
- mlp_bias (`bool`, *optional*, defaults to `False`):
- Whether to use a bias in up_proj, down_proj and gate_proj layers in the MLP layers.
- head_dim (`int`, *optional*):
- The attention head dimension. If None, it will default to hidden_size // num_attention_heads
- ```python
- >>> from transformers import ArceeModel, ArceeConfig
- >>> # Initializing an Arcee AFM-4.5B-Base style configuration
- >>> configuration = ArceeConfig()
- >>> # Initializing a model from the AFM-4.5B-Base style configuration
- >>> model = ArceeModel(configuration)
- >>> # Accessing the model configuration
- >>> configuration = model.config
- ```"""
- model_type = "arcee"
- base_model_tp_plan = {
- "layers.*.self_attn.q_proj": "colwise",
- "layers.*.self_attn.k_proj": "colwise",
- "layers.*.self_attn.v_proj": "colwise",
- "layers.*.self_attn.o_proj": "rowwise",
- "layers.*.mlp.up_proj": "colwise",
- "layers.*.mlp.down_proj": "rowwise",
- }
- def __init__(
- self,
- vocab_size=32000,
- hidden_size=2560,
- intermediate_size=18432,
- num_hidden_layers=32,
- num_attention_heads=32,
- num_key_value_heads=None,
- hidden_act="relu2",
- max_position_embeddings=4096,
- initializer_range=0.02,
- rms_norm_eps=1e-5,
- use_cache=True,
- pad_token_id=None,
- bos_token_id=128000,
- eos_token_id=128001,
- tie_word_embeddings=False,
- rope_theta=10000.0,
- rope_scaling=None,
- attention_bias=False,
- attention_dropout=0.0,
- mlp_bias=False,
- head_dim=None,
- **kwargs,
- ):
- super().__init__(
- vocab_size=vocab_size,
- hidden_size=hidden_size,
- intermediate_size=intermediate_size,
- num_hidden_layers=num_hidden_layers,
- num_attention_heads=num_attention_heads,
- num_key_value_heads=num_key_value_heads,
- hidden_act=hidden_act,
- max_position_embeddings=max_position_embeddings,
- initializer_range=initializer_range,
- rms_norm_eps=rms_norm_eps,
- use_cache=use_cache,
- pad_token_id=pad_token_id,
- bos_token_id=bos_token_id,
- eos_token_id=eos_token_id,
- tie_word_embeddings=tie_word_embeddings,
- rope_theta=rope_theta,
- rope_scaling=rope_scaling,
- attention_bias=attention_bias,
- attention_dropout=attention_dropout,
- mlp_bias=mlp_bias,
- head_dim=head_dim,
- **kwargs,
- )
- del self.pretraining_tp
- class ArceeMLP(NemotronMLP):
- pass
- @auto_docstring(checkpoint="arcee-ai/AFM-4.5B")
- class ArceeForCausalLM(LlamaForCausalLM):
- pass
- @auto_docstring(checkpoint="arcee-ai/AFM-4.5B")
- class ArceeForSequenceClassification(LlamaForSequenceClassification):
- pass
- @auto_docstring(checkpoint="arcee-ai/AFM-4.5B")
- class ArceeForQuestionAnswering(LlamaForQuestionAnswering):
- pass
- @auto_docstring(checkpoint="arcee-ai/AFM-4.5B")
- class ArceeForTokenClassification(LlamaForTokenClassification):
- pass
- __all__ = [
- "ArceeConfig",
- "ArceeForCausalLM",
- "ArceeForQuestionAnswering",
- "ArceeForSequenceClassification",
- "ArceeForTokenClassification",
- "ArceeModel", # noqa: F822
- "ArceePreTrainedModel", # noqa: F822
- ]
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