Add dataset card

README.md

@@ -1,29 +1,81 @@
 ---
-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: 182191388
-    num_examples: 313299
-  download_size: 45733000
-  dataset_size: 182191388
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
+license: bsd-3-clause
+task_categories:
+  - text-generation
+  - feature-extraction
+language:
+  - en
+tags:
+  - theorem-proving
+  - formal-methods
+  - isabelle
+  - archive-of-formal-proofs
+  - hol
+size_categories:
+  - 100K<n<1M
 ---
+
+# Isabelle-AFP
+
+Structured dataset from the Isabelle Archive of Formal Proofs (AFP) - the largest repository of formal proofs in Isabelle/HOL.
+
+## Dataset Description
+
+- **Source:** [isabelle-prover/mirror-afp-2024](https://github.com/isabelle-prover/mirror-afp-2024)
+- **Entries:** 313,299
+- **Files processed:** 9,105
+- **AFP entries (projects):** 888
+- **License:** BSD-3-Clause
+
+## Schema
+
+| Column | Type | Description |
+|--------|------|-------------|
+| fact | string | Declaration body |
+| type | string | lemma, definition, theorem, fun, locale, datatype, etc. |
+| library | string | AFP entry name (project) |
+| imports | list | Theory imports |
+| filename | string | Source file path |
+| symbolic_name | string | Declaration identifier |
+| docstring | string | Documentation (20% coverage) |
+
+## Statistics
+
+### By Type (Top 15)
+| Type | Count |
+|------|-------|
+| lemma | 228,980 |
+| definition | 35,811 |
+| fun | 10,758 |
+| abbreviation | 6,005 |
+| theorem | 5,892 |
+| locale | 5,773 |
+| corollary | 3,185 |
+| type_synonym | 2,369 |
+| primrec | 2,111 |
+| instance | 2,087 |
+| instantiation | 1,743 |
+| datatype | 1,527 |
+| class | 1,491 |
+| inductive | 1,317 |
+| proposition | 922 |
+
+### Top AFP Entries
+| Entry | Count |
+|-------|-------|
+| Crypto_Standards | 10,367 |
+| AutoCorres2 | 8,760 |
+| JinjaThreads | 4,937 |
+| Cook_Levin | 3,008 |
+| ConcurrentHOL | 2,989 |
+
+## About AFP
+
+The Archive of Formal Proofs is a collection of proof libraries for Isabelle/HOL, maintained by the Isabelle community. It contains formalized mathematics, verified algorithms, and program verification.
+
+## Use Cases
+
+- Retrieval/RAG for Isabelle/HOL
+- Training embeddings for formal proofs
+- Cross-prover research (compare with Coq, Lean, Agda)
+- Verified software research