diff --git a/model/reward/instructor/experimental_dataset.py b/model/reward/instructor/experimental_dataset.py
index f705ccf6..85f0c899 100644
--- a/model/reward/instructor/experimental_dataset.py
+++ b/model/reward/instructor/experimental_dataset.py
@@ -17,3 +17,4 @@ from dataset import load_dataset
 from torch.utils.data import Dataset
 
 
+class 
\ No newline at end of file
diff --git a/model/reward/instructor/rank_datasets.py b/model/reward/instructor/rank_datasets.py
index 4ba6293c..2f2260c2 100644
--- a/model/reward/instructor/rank_datasets.py
+++ b/model/reward/instructor/rank_datasets.py
@@ -112,51 +112,49 @@ class HFSummary(Dataset):
     '''
         Human feedback data from OpenAI
         https://github.com/openai/summarize-from-feedback
-
-            >> azcopy copy "https://openaipublic.blob.core.windows.net/summarize-from-feedback/dataset/*" . --recursive
         
         labeling method : pair comparison, 0 or 1
 
     '''
     def __init__(self, split='train',
-        path='summarize-from-feedback/comparisons/*.json',
         conf_threshold=-1,
-        max_comparison_per_sample=5) -> None:
+        max_comparison_per_sample=3) -> None:
         super().__init__()
-        assert split in ('train', 'valid1', 'valid2', 'test')
+        assert split in ('train', 'validation')
         summaries = {}
         # using prompt as our index will allows us
         # to add additional generated prompt later
         self.index2summary = {}
         self.max_comparison_per_sample = max_comparison_per_sample
-        for jsonl_file in glob.glob(path):
-            with open(jsonl_file, 'r') as f:
-                for line in f:
-                    data = json.loads(line)
-                    if data['split'] != split:
-                        continue
-                    if 'extra' in data and \
-                        'confidence' in data['extra'] and \
-                        conf_threshold > data['extra']['confidence']:
-                        print('skipping {}'.format(data['info']['id']))
-                        continue
+        dataset = load_dataset('Tristan/summarize_from_feedback', 'comparisons')[split]
+        for data in dataset:
+            if 'extra' in data and \
+                'confidence' in data['extra'] and \
+                data['extra']['confidence'] is not None and \
+                conf_threshold > data['extra']['confidence']:
+                print('skipping {}'.format(data['info']['id']))
+                continue
 
-                    if 'article' in data['info']:
-                        context = data['info']['article']
-                    elif 'post' in data['info']:
-                        context = data['info']['post']
+            if 'article' in data['info'] and \
+                data['info']['article'] is not None:
+                context = data['info']['article']
+            elif 'post' in data['info']:
+                context = data['info']['post']
 
-                    if context not in self.index2summary:
-                        self.index2summary[len(self.index2summary)] = context
-                    
-                    if context not in summaries:
-                        summaries[context] = []
+            if context is None:
+                continue
 
-                    pos, neg = (0, 1) if data['choice'] == 0 else (1, 0)
-                    summaries[context].append((
-                        data['summaries'][pos]['text'],
-                        data['summaries'][neg]['text']
-                    ))
+            if context not in self.index2summary:
+                self.index2summary[len(self.index2summary)] = context
+            
+            if context not in summaries:
+                summaries[context] = []
+
+            pos, neg = (0, 1) if data['choice'] == 0 else (1, 0)
+            summaries[context].append((
+                data['summaries'][pos]['text'],
+                data['summaries'][neg]['text']
+            ))
 
         self.summaries = summaries
 
diff --git a/model/reward/instructor/tests/test_dataset.py b/model/reward/instructor/tests/test_dataset.py
index c452786b..7b432fd3 100644
--- a/model/reward/instructor/tests/test_dataset.py
+++ b/model/reward/instructor/tests/test_dataset.py
@@ -1,22 +1,23 @@
 from transformers import AutoTokenizer
 from torch.utils.data import DataLoader
-from rank_datasets import WebGPT, HFSummary, DataCollatorForMultipleChoice
+from rank_datasets import WebGPT, HFSummary, DataCollatorForPairRank
 
 
 def test_hfsummary():
     
     tokenizer = AutoTokenizer.from_pretrained("bigscience/mt0-large")
-    collate_fn = DataCollatorForMultipleChoice(tokenizer, max_length=200)
+    collate_fn = DataCollatorForPairRank(tokenizer, max_length=200)
     dataset = HFSummary()
+    print(len(dataset))
     dataloader = DataLoader(dataset, collate_fn=collate_fn, batch_size=8)
     for batch in dataloader:
-        print(batch['input_ids'].shape)
+        batch['input_ids'].shape
  
 
 def test_webgpt():
     
     tokenizer = AutoTokenizer.from_pretrained("bigscience/mt0-large")
-    collate_fn = DataCollatorForMultipleChoice(tokenizer, max_length=200)
+    collate_fn = DataCollatorForPairRank(tokenizer, max_length=200)
     dataset = WebGPT()
     dataloader = DataLoader(dataset, collate_fn=collate_fn, batch_size=32)
     for batch in dataloader: