diff --git a/src/models/ocr_model/train/train.py b/src/models/ocr_model/train/train.py
index a597fb5..05e7ec2 100644
--- a/src/models/ocr_model/train/train.py
+++ b/src/models/ocr_model/train/train.py
@@ -55,7 +55,7 @@ def evaluate(model, tokenizer, eval_dataset, collate_fn):
         model,
         seq2seq_config,
 
-        eval_dataset=eval_dataset,
+        eval_dataset=eval_dataset.select(range(100)),
         tokenizer=tokenizer, 
         data_collator=collate_fn,
         compute_metrics=partial(bleu_metric, tokenizer=tokenizer)
@@ -73,20 +73,20 @@ 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'
-    # )['train']
     dataset = load_dataset(
         '/home/lhy/code/TeXify/src/models/ocr_model/train/dataset/latex-formulas/latex-formulas.py',
         'cleaned_formulas'
-    )['train'].select(range(1000))
+    )['train']
+    # dataset = load_dataset(
+    #     '/home/lhy/code/TeXify/src/models/ocr_model/train/dataset/latex-formulas/latex-formulas.py',
+    #     'cleaned_formulas'
+    # )['train'].select(range(1000))
 
     tokenizer = TexTeller.get_tokenizer('/home/lhy/code/TeXify/src/models/tokenizer/roberta-tokenizer-550Kformulas')
 
     map_fn = partial(tokenize_fn, tokenizer=tokenizer)
-    # tokenized_dataset = dataset.map(map_fn, batched=True, remove_columns=dataset.column_names, num_proc=8, load_from_cache_file=False)
-    tokenized_dataset = dataset.map(map_fn, batched=True, remove_columns=dataset.column_names, num_proc=1, load_from_cache_file=False)
+    tokenized_dataset = dataset.map(map_fn, batched=True, remove_columns=dataset.column_names, num_proc=8, load_from_cache_file=True)
+    # tokenized_dataset = dataset.map(map_fn, batched=True, remove_columns=dataset.column_names, num_proc=1)
     tokenized_dataset = tokenized_dataset.with_transform(img_transform_fn)
 
     split_dataset = tokenized_dataset.train_test_split(test_size=0.05, seed=42)    
@@ -105,3 +105,41 @@ if __name__ == '__main__':
 
     os.chdir(cur_path)
 
+
+'''
+if __name__ == '__main__':
+    cur_path = os.getcwd()
+    script_dirpath = Path(__file__).resolve().parent
+    os.chdir(script_dirpath)
+
+
+    dataset = load_dataset(
+        '/home/lhy/code/TeXify/src/models/ocr_model/train/dataset/latex-formulas/latex-formulas.py',
+        'cleaned_formulas'
+    )['train']
+
+    pause = dataset[0]['image']
+    tokenizer = TexTeller.get_tokenizer('/home/lhy/code/TeXify/src/models/tokenizer/roberta-tokenizer-550Kformulas')
+
+    map_fn = partial(tokenize_fn, tokenizer=tokenizer)
+    tokenized_dataset = dataset.map(map_fn, batched=True, remove_columns=dataset.column_names, num_proc=8)
+    tokenized_dataset = tokenized_dataset.with_transform(img_preprocess)
+
+    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/checkpoint-81000')
+
+    enable_train = False
+    enable_evaluate = True
+    if enable_train:
+        train(model, tokenizer, train_dataset, eval_dataset, collate_fn_with_tokenizer)  
+    if enable_evaluate:
+        evaluate(model, tokenizer, eval_dataset, collate_fn_with_tokenizer)
+
+
+    os.chdir(cur_path)
+
+
+'''
\ No newline at end of file
diff --git a/src/models/ocr_model/utils/functional.py b/src/models/ocr_model/utils/functional.py
index b7cecc1..748f42c 100644
--- a/src/models/ocr_model/utils/functional.py
+++ b/src/models/ocr_model/utils/functional.py
@@ -38,6 +38,7 @@ def collate_fn(samples: List[Dict[str, Any]], tokenizer=None) -> Dict[str, List[
 
     # 左移labels和decoder_attention_mask
     batch['labels'] = left_move(batch['labels'], -100)
+    # batch['decoder_attention_mask'] = left_move(batch['decoder_attention_mask'], 0)
 
     # 把list of Image转成一个tensor with (B, C, H, W)
     batch['pixel_values'] = torch.stack(batch['pixel_values'], dim=0)
@@ -76,3 +77,47 @@ if __name__ == '__main__':
 
     pause = 1
 
+
+'''
+def left_move(x: torch.Tensor, pad_val):
+    assert len(x.shape) == 2, 'x should be 2-dimensional'
+    lefted_x = torch.ones_like(x)
+    lefted_x[:, :-1] = x[:, 1:]
+    lefted_x[:, -1] = pad_val
+    return lefted_x
+
+
+def tokenize_fn(samples: Dict[str, List[Any]], tokenizer=None) -> Dict[str, List[Any]]:
+    assert tokenizer is not None, 'tokenizer should not be None'
+    tokenized_formula = tokenizer(samples['latex_formula'], return_special_tokens_mask=True)
+    tokenized_formula['pixel_values'] = samples['image']
+    return tokenized_formula
+
+
+def collate_fn(samples: List[Dict[str, Any]], tokenizer=None) -> Dict[str, List[Any]]:
+    assert tokenizer is not None, 'tokenizer should not be None'
+    pixel_values = [dic.pop('pixel_values') for dic in samples]
+
+    clm_collator = DataCollatorForLanguageModeling(tokenizer=tokenizer, mlm=False)
+    
+    batch = clm_collator(samples)
+    batch['pixel_values'] = pixel_values
+    batch['decoder_input_ids'] = batch.pop('input_ids')
+    batch['decoder_attention_mask'] = batch.pop('attention_mask')
+
+    # 左移labels和decoder_attention_mask
+    batch['labels'] = left_move(batch['labels'], -100)
+    batch['decoder_attention_mask'] = left_move(batch['decoder_attention_mask'], 0)
+
+    # 把list of Image转成一个tensor with (B, C, H, W)
+    batch['pixel_values'] = torch.stack(batch['pixel_values'], dim=0)
+    return batch
+
+
+def img_preprocess(samples: Dict[str, List[Any]]) -> Dict[str, List[Any]]:
+    processed_img = train_transform(samples['pixel_values'])
+    samples['pixel_values'] = processed_img
+    return samples
+
+'''
+