Fix dataset structure and paths

demo.py

@@ -1,5 +1,5 @@
-import os
 import datasets
+import os
 
 class Demo(datasets.GeneratorBasedBuilder):
     def _info(self):
@@ -8,30 +8,27 @@ class Demo(datasets.GeneratorBasedBuilder):
                 "id": datasets.Value("string"),
                 "problem": datasets.Value("string"),
                 "solution": datasets.Value("string"),
-                "image": datasets.Image(),  # Enables image previews
+                "image": datasets.Image(),
                 "img_height": datasets.Value("int32"),
             }),
         )
 
     def _split_generators(self, dl_manager):
-        # Access the file directly from the root of the repo
-        parquet_path = "visionreasoner_dataset.parquet"
         return [
             datasets.SplitGenerator(
                 name=datasets.Split.TRAIN,
-                gen_kwargs={"filepath": parquet_path}
+                gen_kwargs={"filepath": "visionreasoner_dataset.parquet"},
             ),
         ]
 
     def _generate_examples(self, filepath):
         import pandas as pd
-
         df = pd.read_parquet(filepath)
         for idx, row in df.iterrows():
             yield idx, {
                 "id": row["id"],
                 "problem": row["problem"],
                 "solution": row["solution"],
-                "image": row["image"]["path"],  # assuming this is already like "images/xyz.webp"
+                "image": row["image"]["path"],  # e.g., images/ui_img_10.webp
                 "img_height": row["img_height"],
             }