Add dataset_infos.json

dataset_infos.json

@@ -1,5 +1,35 @@
 {
-  "name": "gene-expression-single-cell-mouse",
-  "source": "https://www.nature.com/articles/s41586-020-2496-1#Sec2",
-  "created_at": "2025-06-14T14:05:35.482350"
-}
+  "default": {
+    "description": "A single-cell transcriptomic atlas characterizes ageing tissues in the mouse",
+    "citation": "https://www.nature.com/articles/s41586-020-2496-1#Sec2",
+    "homepage": "https://github.com/seanome/2025-longevity-x-ai-hackathon",
+    "license": "mit",
+    "features": {
+      "expression_data": {
+        "description": "Gene expression data from multiple tissues and organs"
+      },
+      "metadata": {
+        "description": "Sample and feature metadata"
+      }
+    },
+    "size_categories": ["10K<n<100K"],
+    "task_templates": [],
+    "builder_name": "gene_expression_single_cell_mouse",
+    "config_name": "default",
+    "version": {
+      "version_str": "1.0.0",
+      "description": null,
+      "major": 1,
+      "minor": 0,
+      "patch": 0
+    },
+    "splits": {
+      "train": {
+        "name": "train",
+        "num_bytes": null,
+        "num_examples": null,
+        "dataset_name": "gene_expression_single_cell_mouse"
+      }
+    }
+  }
+}