Update `KLUE-YNAT` prompt

- add a prompt for the klue-ynat task
- remove unnecessary parenthesis from example answers
- reformat the code

lm_eval/tasks/klue.py

@@ -68,8 +68,7 @@ class STS(Task):
 
     def doc_to_text(self, doc):
         return "질문: 문장 1과 문장 2는 서로 유사한 의미를 가지나요?\n문장 1: {}\n문장 2: {}\n정답:".format(
-            general_detokenize(doc["sentence1"]),
-            general_detokenize(doc["sentence2"]) 
+            general_detokenize(doc["sentence1"]), general_detokenize(doc["sentence2"])
         )
 
     def doc_to_target(self, doc):
@@ -83,22 +82,13 @@ class STS(Task):
     def process_results(self, doc, results):
         pred = np.argmax(results)
         gold = doc["labels"]["binary-label"]
-        return {
-            "acc": pred == gold,
-            "f1": (gold, pred)
-        }
+        return {"acc": pred == gold, "f1": (gold, pred)}
 
     def higher_is_better(self):
-        return {
-            "acc": True,
-            "f1": True
-        }
+        return {"acc": True, "f1": True}
 
     def aggregation(self):
-        return {
-            "acc": mean,
-            "f1": f1_score
-        }
+        return {"acc": mean, "f1": f1_score}
 
 
 class YNAT(MultipleChoiceTask):
@@ -117,7 +107,7 @@ class YNAT(MultipleChoiceTask):
 
     def training_docs(self):
         if self._training_docs is None:
-            self._training_docs = list(map(self._process_doc,self.dataset["train"]))
+            self._training_docs = list(map(self._process_doc, self.dataset["train"]))
         return self._training_docs
 
     def validation_docs(self):
@@ -127,32 +117,30 @@ class YNAT(MultipleChoiceTask):
         out_doc = {
             "title": doc["title"],
             "choices": ["과학", "경제", "사회", "생활", "세계", "스포츠", "정치"],
-            "gold": doc["label"]
+            "gold": doc["label"],
         }
         return out_doc
 
     def doc_to_text(self, doc):
-        return "{}".format(doc["title"])
+        return "질문: 다음의 제목을 가지는 뉴스는 어느 분야의 뉴스인가요?\n제목: {}\n분야:".format(doc["title"])
 
     def doc_to_target(self, doc):
-        return " ({})".format({0: "과학", 1: "경제", 2: "사회", 3: "생활", 4: "세계", 5: "스포츠", 6: "정치"}[doc["gold"]])
+        return " {}".format(
+            {0: "과학", 1: "경제", 2: "사회", 3: "생활", 4: "세계", 5: "스포츠", 6: "정치"}[
+                doc["gold"]
+            ]
+        )
 
     def process_results(self, doc, results):
         pred = np.argmax(results)
         gold = doc["gold"]
-        return {
-            "f1": (gold, pred)
-        }
+        return {"f1": (gold, pred)}
 
     def higher_is_better(self):
-        return {
-            "f1": True
-        }
+        return {"f1": True}
 
     def aggregation(self):
-        return {
-            "f1": macro_f1_score
-        }
+        return {"f1": macro_f1_score}
 
 
 class NLI(Task):
@@ -231,7 +219,18 @@ class MRC(Task):
         return self.dataset["validation"]
 
     def doc_to_text(self, doc):
-        return '제목: ' + doc['title'] + '\n\n' + '본문: ' + doc['context'] + '\n\n' + '질문: ' + doc['question'] + '\n\n' + '답:'
+        return (
+            "제목: "
+            + doc["title"]
+            + "\n\n"
+            + "본문: "
+            + doc["context"]
+            + "\n\n"
+            + "질문: "
+            + doc["question"]
+            + "\n\n"
+            + "답:"
+        )
 
     def doc_to_target(self, doc):
         answer = doc["answers"]["text"][0]
@@ -240,7 +239,7 @@ class MRC(Task):
         return " " + answer
 
     def construct_requests(self, doc, ctx):
-        """ Uses RequestFactory to construct Requests and returns an iterable of 
+        """Uses RequestFactory to construct Requests and returns an iterable of
         Requests which will be sent to the LM.
 
         :param doc:
@@ -250,7 +249,7 @@ class MRC(Task):
             language description, as well as the few shot examples, and the question
             part of the document for `doc`.
         """
-        continuation = rf.greedy_until(ctx, ['\n'])
+        continuation = rf.greedy_until(ctx, ["\n"])
         is_unanswerable = rf.loglikelihood(ctx, " " + "대답 불가")
         return continuation, is_unanswerable
 
@@ -269,15 +268,15 @@ class MRC(Task):
         no_answer_probability = exp(logprob_unanswerable)
 
         predictions = {
-            'id': doc['guid'],
-            'prediction_text': continuation,
-            'no_answer_probability': no_answer_probability,
+            "id": doc["guid"],
+            "prediction_text": continuation,
+            "no_answer_probability": no_answer_probability,
         }
 
         references = {
-            'id': doc['guid'],
-            'answers': doc['answers'],
-            'unanswerable': doc['is_impossible'],
+            "id": doc["guid"],
+            "answers": doc["answers"],
+            "unanswerable": doc["is_impossible"],
         }
 
         return {