Add dataset card

README.md

@@ -1,29 +1,62 @@
 ---
-dataset_info:
-  features:
-  - name: fact
-    dtype: string
-  - name: type
-    dtype: string
-  - name: library
-    dtype: string
-  - name: imports
-    list: string
-  - name: filename
-    dtype: string
-  - name: symbolic_name
-    dtype: string
-  - name: docstring
-    dtype: string
-  splits:
-  - name: train
-    num_bytes: 1298337
-    num_examples: 2346
-  download_size: 373693
-  dataset_size: 1298337
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
+license: apache-2.0
+task_categories:
+  - text-generation
+  - feature-extraction
+language:
+  - en
+tags:
+  - theorem-proving
+  - formal-methods
+  - lean4
+  - batteries
+  - standard-library
+size_categories:
+  - 1K<n<10K
 ---
+
+# Lean4-Batteries
+
+Structured dataset from Lean 4 Batteries - the community standard library extensions.
+
+## Dataset Description
+
+- **Source:** [leanprover-community/batteries](https://github.com/leanprover-community/batteries)
+- **Entries:** 2,346
+- **Files processed:** 172
+- **License:** Apache 2.0
+
+## Schema
+
+| Column | Type | Description |
+|--------|------|-------------|
+| fact | string | Declaration body |
+| type | string | theorem, def, class, structure, etc. |
+| library | string | Batteries module |
+| imports | list | Import statements |
+| filename | string | Source file path |
+| symbolic_name | string | Declaration identifier |
+| docstring | string | Documentation (48% coverage) |
+
+## Statistics
+
+### By Type
+| Type | Count |
+|------|-------|
+| theorem | 1,257 |
+| def | 951 |
+| abbrev | 48 |
+| structure | 38 |
+| inductive | 24 |
+| class | 22 |
+| instance | 4 |
+| opaque | 2 |
+
+## About Batteries
+
+Batteries is the community-maintained extended standard library for Lean 4. It provides additional data structures, algorithms, and tactics beyond the core Init and Std libraries.
+
+## Related Datasets
+
+- [Lean4-Stdlib](https://huggingface.co/datasets/phanerozoic/Lean4-Stdlib)
+- [Lean4-Mathlib](https://huggingface.co/datasets/phanerozoic/Lean4-Mathlib)