Introduce unsqueeze for first dimension

unsplash25k-image-embeddings.py

@@ -49,7 +49,7 @@ class Unsplash25kImageEmbeddingsDataset(datasets.GeneratorBasedBuilder):
             {
                 "image_id": datasets.Value("string"),
                 # "image_embedding": datasets.Features({'x': datasets.Array2D(shape=(1, 512), dtype='float16')})
-                "image_embedding": datasets.Array2D(shape=(512), dtype='float16')
+                "image_embedding": datasets.Array2D(shape=(1, 512), dtype='float16')
             }
         )   
         return datasets.DatasetInfo(
@@ -88,5 +88,5 @@ class Unsplash25kImageEmbeddingsDataset(datasets.GeneratorBasedBuilder):
             for key in f.keys():
                 tensors[key] = f.get_tensor(key)
         for num_id, image_id in enumerate(image_ids):
-            yield num_id, {"image_id": image_id, "image_embedding": tensors["embeddings"][num_id]}
+            yield num_id, {"image_id": image_id, "image_embedding": tensors["embeddings"][num_id].unsqueeze(0)}