transformers/docs/source/en/model_doc/roformer.md

This model was published in HF papers on 2021-04-20 and contributed to Hugging Face Transformers on 2021-05-20.

RoFormer

RoFormer introduces Rotary Position Embedding (RoPE) to encode token positions by rotating the inputs in 2D space. This allows a model to track absolute positions and model relative relationships. RoPE can scale to longer sequences, account for the natural decay of token dependencies, and works with the more efficient linear self-attention.

You can find all the RoFormer checkpoints on the Hub.

Tip

Click on the RoFormer models in the right sidebar for more examples of how to apply RoFormer to different language tasks.

The example below demonstrates how to predict the [MASK] token with [Pipeline], [AutoModel], and from the command line.

# uncomment to install rjieba which is needed for the tokenizer
# !pip install rjieba
from transformers import pipeline


pipe = pipeline(
    task="fill-mask",
    model="junnyu/roformer_chinese_base",
    device=0
)
output = pipe("水在零度时会[MASK]")
print(output)

# uncomment to install rjieba which is needed for the tokenizer
# !pip install rjieba
import torch
from transformers import AutoModelForMaskedLM, AutoTokenizer

model = AutoModelForMaskedLM.from_pretrained(
    "junnyu/roformer_chinese_base"
 device_map="auto")
tokenizer = AutoTokenizer.from_pretrained("junnyu/roformer_chinese_base")

input_ids = tokenizer("水在零度时会[MASK]", return_tensors="pt").to(model.device)
outputs = model(**input_ids)
decoded = tokenizer.batch_decode(outputs.logits.argmax(-1), skip_special_tokens=True)
print(decoded)

Notes

• The current RoFormer implementation is an encoder-only model. The original code can be found in the ZhuiyiTechnology/roformer repository.

RoFormerConfig

autodoc RoFormerConfig

RoFormerTokenizer

autodoc RoFormerTokenizer - build_inputs_with_special_tokens - get_special_tokens_mask - create_token_type_ids_from_sequences - save_vocabulary

RoFormerTokenizerFast

RoFormerTokenizerFast is an alias for [RoFormerTokenizer].

RoFormerModel

autodoc RoFormerModel - forward

RoFormerForCausalLM

autodoc RoFormerForCausalLM - forward

RoFormerForMaskedLM

autodoc RoFormerForMaskedLM - forward

RoFormerForSequenceClassification

autodoc RoFormerForSequenceClassification - forward

RoFormerForMultipleChoice

autodoc RoFormerForMultipleChoice - forward

RoFormerForTokenClassification

autodoc RoFormerForTokenClassification - forward

RoFormerForQuestionAnswering

autodoc RoFormerForQuestionAnswering - forward