diff --git a/env.py b/env.py
index c18dd3b..9630c27 100644
--- a/env.py
+++ b/env.py
@@ -1,11 +1,6 @@
 import functools
 import evaluate
-
-# fix: GPU OOM (TF exhausts GPU memory, crashing PyTorch)
-import tensorflow as tf
-gpus = tf.config.experimental.list_physical_devices('GPU')
-for gpu in gpus:
-  tf.config.experimental.set_memory_growth(gpu, True)
+import pseudo_func
 
 datasets = {
     "newsroom": {
@@ -14,7 +9,7 @@
         "document_column": "ArticleText",
         "system_summary_column": "SystemSummary",
         "reference_summary_column": "ReferenceSummary",
-        "approaches": ["trad", "new"],
+        "approaches": ["new"],
         "human_eval_only_path": "dataloader/newsroom-human-eval.csv",  # you need to get this file. See ReadMe.
         "refs_path": "dataloader/test.jsonl",  # you need to get this file. See ReadMe.
         "human_eval_w_refs_path": "dataloader/newsroom_human_eval_with_refs.csv"
@@ -57,6 +52,8 @@
     "bleurt": evaluate.load('bleurt', config_name='BLEURT-20', module_type='metric').compute,
     "rouge":  functools.partial(evaluate.load("rouge").compute,  use_aggregator=False),
     "bertscore":  functools.partial(evaluate.load("bertscore").compute, lang='en', use_fast_tokenizer=True),
+    "pseudo_metric":functools.partial(pseudo_func.pseudo_func, model_name = 'google/pegasus-xsum',ref_based_metric_name='rouge')
+  
 }
 
 
diff --git a/pseudo_func.py b/pseudo_func.py
new file mode 100644
index 0000000..2caf8b3
--- /dev/null
+++ b/pseudo_func.py
@@ -0,0 +1,49 @@
+# -*- coding: utf-8 -*-
+"""PegasusDemo.ipynb
+Automatically generated by Colaboratory.
+Original file is located at
+    https://colab.research.google.com/drive/1j9LyFcJLiv37zZloRudYq7Wk9YrgPbfv
+"""
+
+
+"""# New Section"""
+
+
+from transformers import PegasusForConditionalGeneration, PegasusTokenizer
+import torch
+import evaluate
+
+
+"""## pseudo_metric function"""
+
+import pandas as pd
+import csv
+
+
+
+def pseudo_func(predictions,references, model_name, ref_based_metric_name):
+  device = "cuda" if torch.cuda.is_available() else "cpu"
+  tokenizer = PegasusTokenizer.from_pretrained(model_name)
+  model = PegasusForConditionalGeneration.from_pretrained(model_name).to(device)
+  pseudo_ref_sum = []
+ 
+  for system_sum, src_text  in zip (predictions, references) :
+    batch = tokenizer(src_text, truncation=True, padding="longest", return_tensors="pt").to(device)
+    translated = model.generate(**batch)
+    tgt_text = tokenizer.batch_decode(translated, skip_special_tokens=True)
+    pseudo_ref_sum.append(tgt_text[0])
+    print(system_sum,tgt_text[0])
+  
+  metricfn = evaluate.load(ref_based_metric_name)
+  if ref_based_metric_name == 'rouge' :   
+    results =(metricfn.compute(predictions= pseudo_ref_sum,
+                          references= predictions,
+                          use_aggregator=False))
+
+  else :
+    results =(metricfn.compute(predictions= pseudo_ref_sum,
+                          references= predictions))
+
+
+  print(results)
+  return results