diff --git a/downstream_task/report_generation_and_vqa/generation_decode.py b/downstream_task/report_generation_and_vqa/generation_decode.py
index 19358ce..d587b64 100644
--- a/downstream_task/report_generation_and_vqa/generation_decode.py
+++ b/downstream_task/report_generation_and_vqa/generation_decode.py
@@ -16,12 +16,12 @@
 import torchvision
 import csv
 from transformers import BertTokenizer
-from pytorch_pretrained_bert.modeling_like_cxrbert import BertForSeq2SeqDecoder
+from pytorch_pretrained_bert.model import BertForSeq2SeqDecoder
 
-import sc.seq2seq_loader_itm as seq2seq_loader
-from sc.bleu import language_eval_bleu
-from misc.data_parallel import DataParallelImbalance
-from sc.image_embedding import Img_patch_embedding, fully_sampling, random_sampling
+# import sc.seq2seq_loader_itm as seq2seq_loader
+from data_loader import Preprocess4Seq2seqDecoder
+from bleu import language_eval_bleu
+from data_parallel import DataParallelImbalance
 
 
 logging.basicConfig(format='%(asctime)s - %(levelname)s - %(name)s -   %(message)s',
@@ -148,7 +148,7 @@ def main():
 
     bi_uni_pipeline = []
     # def __init__(self, tokenizer, max_len, max_txt_length, new_segment_ids=False, mode="s2s", len_vis_input=None):
-    bi_uni_pipeline.append(seq2seq_loader.Preprocess4Seq2seqDecoder(tokenizer, args.max_seq_length,
+    bi_uni_pipeline.append(Preprocess4Seq2seqDecoder(tokenizer, args.max_seq_length,
         max_txt_length=args.max_txt_length, new_segment_ids=args.new_segment_ids,
         mode='s2s', len_vis_input=args.len_vis_input))
 
@@ -175,14 +175,15 @@ def main():
                 w_list.append(w)
         forbid_ignore_set = set(tokenizer.convert_tokens_to_ids(w_list))
 
-    model = BertForSeq2SeqDecoder.from_pretrained(args.bert_model,
-            max_position_embeddings=args.max_position_embeddings, config_path=args.config_path,
-            state_dict={}, args=args, num_labels=cls_num_labels,
-            type_vocab_size=type_vocab_size, task_idx=3, mask_word_id=mask_word_id,
-            search_beam_size=args.beam_size, length_penalty=args.length_penalty,
-            eos_id=eos_word_ids, forbid_duplicate_ngrams=args.forbid_duplicate_ngrams,
-            forbid_ignore_set=forbid_ignore_set, ngram_size=args.ngram_size, min_len=args.min_len,
-            len_vis_input=args.len_vis_input)
+    # unused
+    # model = BertForSeq2SeqDecoder.from_pretrained(args.bert_model,
+    #         max_position_embeddings=args.max_position_embeddings, config_path=args.config_path,
+    #         state_dict={}, args=args, num_labels=cls_num_labels,
+    #         type_vocab_size=type_vocab_size, task_idx=3, mask_word_id=mask_word_id,
+    #         search_beam_size=args.beam_size, length_penalty=args.length_penalty,
+    #         eos_id=eos_word_ids, forbid_duplicate_ngrams=args.forbid_duplicate_ngrams,
+    #         forbid_ignore_set=forbid_ignore_set, ngram_size=args.ngram_size, min_len=args.min_len,
+    #         len_vis_input=args.len_vis_input)
     
     max_a, max_b, max_c, max_d = [], [], [], []
     # for epoch_itr in range(10,int(args.model_recover_path.split('.')[-2])+1):
@@ -203,7 +204,7 @@ def main():
                 max_position_embeddings=args.max_position_embeddings, config_path=args.config_path,
                 state_dict=model_recover, args=args, num_labels=cls_num_labels,
                 type_vocab_size=type_vocab_size, task_idx=3, mask_word_id=mask_word_id,
-                search_beam_size=args.beam_size, length_penalty=args.length_penalty,
+                length_penalty=args.length_penalty,
                 eos_id=eos_word_ids, forbid_duplicate_ngrams=args.forbid_duplicate_ngrams,
                 forbid_ignore_set=forbid_ignore_set, ngram_size=args.ngram_size, min_len=args.min_len,
                 len_vis_input=args.len_vis_input)
diff --git a/downstream_task/report_generation_and_vqa/pytorch_pretrained_bert/model.py b/downstream_task/report_generation_and_vqa/pytorch_pretrained_bert/model.py
index 54f58fe..1a171b0 100644
--- a/downstream_task/report_generation_and_vqa/pytorch_pretrained_bert/model.py
+++ b/downstream_task/report_generation_and_vqa/pytorch_pretrained_bert/model.py
@@ -886,12 +886,11 @@ def forward(self, input_id, input_imgs, vis_pe, token_type_ids):  # img_embed_ou
         )
         
         if self.args.img_postion:
-            position_ids = torch.arange(seq_len, dtype=torch.long).cuda()
-            position_ids = position_ids.unsqueeze(0).expand(bsz, seq_len)
+            position_ids = torch.tensor([0, seq_len-1], dtype=torch.long).cuda()
+            position_ids = position_ids.unsqueeze(0).expand(bsz, 2)
             position_embeddings = self.position_embeddings(position_ids)
             pos_vis_embeddings = self.position_embeddings(vis_pe)
-            token_position_embeddings = torch.cat((position_embeddings[:,:1], pos_vis_embeddings, position_embeddings[:,self.args.len_vis_input+1:]), dim=1)
-            
+            token_position_embeddings = torch.cat((position_embeddings[:,:1], pos_vis_embeddings, position_embeddings[:,-1:]), dim=1)
             embeddings = token_embeddings + token_position_embeddings + token_type_embeddings  # should be tensor
         else: 
             embeddings = token_embeddings + token_type_embeddings  # should be tensor