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loading_script.py

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+import csv
+import os
+from datasets import Dataset, DatasetDict
+
+class VulnAIDataset:
+    def __init__(self, data_dir):
+        self.data_dir = data_dir
+    def load(self):
+        splits = {}
+        for split in ["train", "validation", "test"]:
+            path = os.path.join(self.data_dir, "data", f"{split}.csv")
+            if os.path.exists(path):
+                with open(path, "r", encoding="utf-8") as f:
+                    reader = csv.DictReader(f)
+                    rows = list(reader)
+                splits[split] = Dataset.from_list(rows)
+        return DatasetDict(splits)
+
+def load_dataset(data_dir):
+    return VulnAIDataset(data_dir).load()