changed tokenization

ref_seg_ger.py

@@ -18,8 +18,8 @@ from glob import glob
 import os
 import numpy as np
 from PIL import Image
-from transformers import AutoTokenizer
-from tokenizers.pre_tokenizers import Whitespace
+from tokenizers import pre_tokenizers
+from tokenizers.pre_tokenizers import Digits, Split, Whitespace
 import datasets
 from itertools import chain
 import pandas as pd
@@ -142,7 +142,15 @@ class RefSeg(datasets.GeneratorBasedBuilder):
     # ]
 
     # DEFAULT_CONFIG_NAME = "small"  # It's not mandatory to have a default configuration. Just use one if it make sense.
-    TOKENIZER = Whitespace()
+    TOKENIZER = pre_tokenizer = pre_tokenizers.Sequence([
+            Whitespace(),
+            Digits(),
+            Split(".", behavior="isolated"),
+            Split(":", behavior="isolated"),
+            Split("/", behavior="isolated"),
+            Split("-", behavior="isolated"),
+            Split(",", behavior="isolated"),
+        ])
 
     def _info(self):
         # TODO: This method specifies the datasets.DatasetInfo object which contains informations and typings for the dataset