diff --git a/.gitignore b/.gitignore
index 37c7cfd..787a849 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,5 @@
 
 **/logs
 **/.cache
-**/tmp*
\ No newline at end of file
+**/tmp*
+**/data
\ No newline at end of file
diff --git a/src/models/globals.py b/src/models/globals.py
index 664af8d..3f1ed56 100644
--- a/src/models/globals.py
+++ b/src/models/globals.py
@@ -30,7 +30,7 @@ OCR_IMG_MAX_WIDTH  = 768
 OCR_IMG_CHANNELS = 1  # 灰度图
 
 # ocr模型训练数据集的最长token数
-MAX_TOKEN_SIZE = 512     # 模型最长的embedding长度被设置成了512，所以这里必须是512
+MAX_TOKEN_SIZE = 2048     # 模型最长的embedding长度(默认512)
 # MAX_TOKEN_SIZE = 600
 
 # ocr模型训练时随机缩放的比例
diff --git a/src/models/ocr_model/model/TexTeller.py b/src/models/ocr_model/model/TexTeller.py
index 142efa6..1a521fa 100644
--- a/src/models/ocr_model/model/TexTeller.py
+++ b/src/models/ocr_model/model/TexTeller.py
@@ -5,6 +5,7 @@ from models.globals import (
     VOCAB_SIZE,
     OCR_IMG_SIZE,
     OCR_IMG_CHANNELS,
+    MAX_TOKEN_SIZE
 )
 
 from transformers import (
@@ -25,6 +26,7 @@ class TexTeller(VisionEncoderDecoderModel):
         ))
         decoder = TrOCRForCausalLM(TrOCRConfig(
             vocab_size=VOCAB_SIZE,
+            max_position_embeddings=MAX_TOKEN_SIZE
         ))
         super().__init__(encoder=encoder, decoder=decoder)
     
diff --git a/src/models/ocr_model/train/train.py b/src/models/ocr_model/train/train.py
index ded62ea..a4edc9c 100644
--- a/src/models/ocr_model/train/train.py
+++ b/src/models/ocr_model/train/train.py
@@ -65,8 +65,7 @@ if __name__ == '__main__':
     os.chdir(script_dirpath)
 
     dataset = load_dataset(
-        '/home/lhy/code/TeXify/src/models/ocr_model/train/dataset/latex-formulas/latex-formulas.py',
-        'cleaned_formulas'
+        '/home/lhy/code/TexTeller/src/models/ocr_model/train/data/loader.py'
     )['train']
     dataset = dataset.filter(lambda x: x['image'].height > MIN_HEIGHT and x['image'].width > MIN_WIDTH)
     dataset = dataset.shuffle(seed=42)
@@ -81,8 +80,8 @@ if __name__ == '__main__':
     split_dataset = tokenized_dataset.train_test_split(test_size=0.05, seed=42)    
     train_dataset, eval_dataset = split_dataset['train'], split_dataset['test']
     collate_fn_with_tokenizer = partial(collate_fn, tokenizer=tokenizer)
-    # model = TexTeller()
-    model = TexTeller.from_pretrained('/home/lhy/code/TeXify/src/models/ocr_model/train/train_result/train_with_random_resize/checkpoint-80000')
+    model = TexTeller()
+    # model = TexTeller.from_pretrained('/home/lhy/code/TeXify/src/models/ocr_model/train/train_result/train_with_random_resize/checkpoint-80000')
 
     enable_train = False
     enable_evaluate = True
diff --git a/src/models/tokenizer/train/train.py b/src/models/tokenizer/train/train.py
index 4f9d0bc..ab37915 100644
--- a/src/models/tokenizer/train/train.py
+++ b/src/models/tokenizer/train/train.py
@@ -5,7 +5,7 @@ from ...globals import VOCAB_SIZE
 
 if __name__ == '__main__':
     tokenizer = TexTeller.get_tokenizer('/home/lhy/code/TeXify/src/models/tokenizer/roberta-tokenizer-raw')
-    dataset = load_dataset("/home/lhy/code/TeXify/src/models/ocr_model/train/dataset/latex-formulas/latex-formulas.py", "cleaned_formulas")['train']
+    dataset = load_dataset("/home/lhy/code/TexTeller/src/models/ocr_model/train/data/loader.py")['train']
     new_tokenizer = tokenizer.train_new_from_iterator(text_iterator=dataset['latex_formula'], vocab_size=VOCAB_SIZE)
     new_tokenizer.save_pretrained('/home/lhy/code/TeXify/src/models/tokenizer/roberta-tokenizer-550Kformulas')
     pause = 1