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tokenizer-arena
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词典大小  250680   来自 https://huggingface.co/bigscience/bloom#preprocessing 
"vocab_size": 250880


## OOV

有些空格没编码进去，详见`test_oov.py`

## 中文词典

一个中文几个id？


## 

```
  "pre_tokenizer": {
    "type": "Sequence",
    "pretokenizers": [
      {
        "type": "Split",
        "pattern": {
          "Regex": " ?[^(\\s|[.,!?…。，、।۔،])]+"
        },
        "behavior": "Isolated",
        "invert": false
      },
      {
        "type": "ByteLevel",
        "add_prefix_space": false,
        "trim_offsets": true,
	"use_regex": false
      }
    ]
  },
  "post_processor": {
    "type": "ByteLevel",
    "add_prefix_space": true,
    "trim_offsets": false,
    "use_regex": false

  },
```