added custom score answer func

reasoning_gym/algorithmic/sentence_reordering.py

@@ -3,7 +3,7 @@
 import re
 from dataclasses import dataclass
 from random import Random
-from typing import Optional
+from typing import Any, Dict, Optional
 
 from ..data import read_data_file
 from ..factory import ProceduralDataset, register_dataset
@@ -92,5 +92,33 @@ class SentenceReorderingDataset(ProceduralDataset):
             "metadata": {"word_count": word_count},
         }
 
+    def score_answer(self, answer: Optional[str], entry: Dict[str, Any]) -> float:
+        reward = 0
+        expected_answer = entry["answer"]
+        if answer is not None:
+            try:
+                if expected_answer == answer:
+                    return 1.0
+                goal_words = expected_answer.split()
+                answer_words = answer.split()
+                if len(goal_words) == len(answer_words):
+                    credit = [1 if goal_word.lower() == answer_word.lower() else 0 for goal_word, answer_word in zip(goal_words, answer_words)]
+                    reward = sum(credit) / len(credit)
+                else:
+                    reward = 0.05
+            except:
+                reward = 0.01
+        return reward
+                
+                
+                
+                
+                
+                
+                
+
+
+
+
 
 register_dataset("sentence_reordering", SentenceReorderingDataset, SentenceReorderingConfig)