tokenizer¶
-
class
ReformerTokenizer
(sentencepiece_model_file, do_lower_case=False, remove_space=True, keep_accents=False, eos_token='</s>', unk_token='<unk>', pad_token='<unk>', **kwargs)[source]¶ Bases:
paddlenlp.transformers.albert.tokenizer.AlbertEnglishTokenizer
Constructs a Reformer tokenizer based on SentencePiece . This tokenizer inherits from
PretrainedTokenizer
which contains most of the main methods. For more information regarding those methods, please refer to this superclass.- Parameters
sentencepiece_model_file (str) – The vocabulary file (ends with ‘.spm’) required to instantiate a SentencePiece tokenizer.
do_lower_case (bool) – Whether or not to lowercase the input when tokenizing. Defaults to
False
.remove_space (bool) – Whether or note to remove space when tokenizing. Defaults to
True
.keep_accents (bool) – Whether or note to keep accents when tokenizing. Defaults to
False
.eos_token (str) – A special token representing the eos (end-of-sentence) token. Defaults to “</s>”.
unk_token (str) – A special token representing the unknown (out-of-vocabulary) token. An unknown token is set to be
unk_token
inorder to be converted to an ID. Defaults to “<unk>”.pad_token (str) – A special token used to make arrays of tokens the same size for batching purposes. Defaults to “<unk>”.
-
build_inputs_with_special_tokens
(token_ids_0, token_ids_1=None)[source]¶ Build model inputs from a sequence or a pair of sequence.
An Reformer sequence has the following format:
single sequence:
X
pair of sequences: ``A B ``
- Parameters
token_ids_0 (List[int]) – List of IDs to which the special tokens will be added.
token_ids_1 (List[int], optional) – Optional second list of IDs for sequence pairs. Defaults to None.
- Returns
List of input_id with the appropriate special tokens.
- Return type
List[int]
-
create_token_type_ids_from_sequences
(token_ids_0, token_ids_1=None)[source]¶ Create a mask from the two sequences.
If
token_ids_1
isNone
, this method only returns the first portion of the mask (0s).- Parameters
token_ids_0 (List[int]) – List of IDs.
token_ids_1 (List[int], optional) – Optional second list of IDs for sequence pairs.
- Returns
List of token_type_id according to the given sequence(s).
- Return type
List[int]