> For the complete documentation index, see [llms.txt](https://boinc-ai.gitbook.io/tokenizers/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://boinc-ai.gitbook.io/tokenizers/api/decoders.md).

# Decoders

## Decoders

PythonRustNode

### BPEDecoder

#### class tokenizers.decoders.BPEDecoder

( suffix = '\</w>' )

Parameters

* **suffix** (`str`, *optional*, defaults to `</w>`) — The suffix that was used to caracterize an end-of-word. This suffix will be replaced by whitespaces during the decoding

BPEDecoder Decoder

### ByteLevel

#### class tokenizers.decoders.ByteLevel

( )

ByteLevel Decoder

This decoder is to be used in tandem with the [ByteLevel](https://huggingface.co/docs/tokenizers/v0.13.4.rc2/en/api/pre-tokenizers#tokenizers.pre_tokenizers.ByteLevel) [PreTokenizer](https://huggingface.co/docs/tokenizers/v0.13.4.rc2/en/api/pre-tokenizers#tokenizers.pre_tokenizers.PreTokenizer).

### CTC

#### class tokenizers.decoders.CTC

( pad\_token = '\<pad>'word\_delimiter\_token = '|'cleanup = True )

Parameters

* **pad\_token** (`str`, *optional*, defaults to `<pad>`) — The pad token used by CTC to delimit a new token.
* **word\_delimiter\_token** (`str`, *optional*, defaults to `|`) — The word delimiter token. It will be replaced by a
* **cleanup** (`bool`, *optional*, defaults to `True`) — Whether to cleanup some tokenization artifacts. Mainly spaces before punctuation, and some abbreviated english forms.

CTC Decoder

### Metaspace

#### class tokenizers.decoders.Metaspace

( )

Parameters

* **replacement** (`str`, *optional*, defaults to `▁`) — The replacement character. Must be exactly one character. By default we use the *▁* (U+2581) meta symbol (Same as in SentencePiece).
* **add\_prefix\_space** (`bool`, *optional*, defaults to `True`) — Whether to add a space to the first word if there isn’t already one. This lets us treat *hello* exactly like *say hello*.

Metaspace Decoder

### WordPiece

#### class tokenizers.decoders.WordPiece

( prefix = '##'cleanup = True )

Parameters

* **prefix** (`str`, *optional*, defaults to `##`) — The prefix to use for subwords that are not a beginning-of-word
* **cleanup** (`bool`, *optional*, defaults to `True`) — Whether to cleanup some tokenization artifacts. Mainly spaces before punctuation, and some abbreviated english forms.

WordPiece Decoder


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