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README.md

@@ -1,43 +1,93 @@
 ---
-license: other
+license: cc-by-nc-4.0
 task_categories:
 - table-question-answering
+language:
+- en
+- zh
 tags:
 - spreadsheets
 - xlsx
 - formula-reasoning
+- formula-dependency
 - benchmark
 - agentic-evaluation
+- executable-evaluation
 pretty_name: FormulaCascade Benchmark
 size_categories:
 - 10K<n<100K
+configs:
+- config_name: eval_200_manifest
+  data_files:
+  - split: test
+    path: data/eval_200_manifest.parquet
 ---
 
 # FormulaCascade Benchmark
 
-This repository hosts an anonymous release of FormulaCascade, a benchmark for long-horizon spreadsheet formula reasoning in real `.xlsx` workbooks.
+FormulaCascade is a benchmark for long-horizon spreadsheet formula-dependency reasoning in real executable `.xlsx` workbooks. It evaluates whether agents can recover hidden workbook logic by localizing relevant regions, tracing formula dependencies, reconstructing latent formulas or values, and filling masked target cells.
 
-## Current Release
+## Current Review Release
 
-This initial upload contains the standard 200-task evaluation split:
+This repository currently hosts the standard **eval-200** split used for reproducible model comparison. The split is a stratified subset of the full **11,171-task** FormulaCascade benchmark:
+
+- **200 tasks total**: 50 tasks per tier.
+- **Balanced sheet topology**: 25 single-sheet and 25 cross-sheet tasks per tier.
+- **Four quality-difficulty tiers**: `T1_FRONTIER`, `T2_HARD`, `T3_MEDIUM`, and `T4_STANDARD`.
+- **Executable artifacts**: solver-visible masked workbooks plus evaluator-only contracts for hidden targets, formulas, cached values, dependency layers, and provenance.
+
+Uploaded files include:
 
 - `FormulaCascade_Benchmark_eval_200.tar.gz`: compressed eval-200 split.
+- `FormulaCascade_Benchmark_eval_200/`: expanded eval-200 directory for direct browsing.
+- `data/eval_200_manifest.parquet`: lightweight tabular manifest for the Hugging Face Dataset Viewer.
+- `data/eval_200_manifest.csv` and `data/eval_200_manifest.jsonl`: equivalent manifest exports for convenience.
 - `SHA256SUMS.txt`: checksum for release integrity verification.
 
-To unpack:
+The full benchmark contains **11,171 bilingual tasks** across finance, sales, operations, engineering, HR, education, and general analytics workbooks, with dependency depth up to 46 and substantial cross-sheet structure. The full release uses the same task schema, hidden-contract format, and tiered directory layout as eval-200.
+
+## Dataset Viewer
+
+The Dataset Viewer displays `data/eval_200_manifest.parquet`, not the raw `.xlsx` files. Spreadsheet workbooks and hidden contracts are stored as repository files and should be downloaded or browsed directly.
+
+Manifest columns include:
+
+- `fcb_id`: stable task identifier.
+- `tier` / `tier_label`: quality-difficulty tier.
+- `category`: `single_sheet` or `cross_sheet`.
+- `domain`: workbook domain label.
+- `depth`: dependency-chain depth.
+- `is_cross_sheet`: whether the task requires cross-sheet reasoning.
+- `total_masked`: number of masked cells.
+- `formula_families`: coarse formula-family labels.
+- `masked_workbook`: path to the solver-visible workbook.
+- `task_description`: path to the natural-language task description.
+- `evaluator_contract_dir`: path to evaluator-only ground-truth contracts.
+
+## Usage
+
+Download the archive:
 
 ```bash
 tar -xzf FormulaCascade_Benchmark_eval_200.tar.gz
 ```
 
-The extracted folder is:
+For each task, provide the solver with:
 
-```text
-FormulaCascade_Benchmark_eval_200/
-```
+- `release/FCB-NNNNN/task_description.json`
+- `release/FCB-NNNNN/task-NNNNN.xlsx`
+
+Use the corresponding `internal/FCB-NNNNN/` directory for evaluation only. It contains target contracts, dependency layers, ground truth, provenance, and release-quality audit files.
 
 ## Intended Use
 
-FormulaCascade evaluates agents that must solve masked spreadsheet tasks by localizing relevant workbook context, tracing formula dependencies, reconstructing latent workbook logic, and filling hidden targets with executable values or formulas.
+FormulaCascade is intended for evaluating spreadsheet agents, LLM tool-use systems, formula-reasoning methods, and spreadsheet-native harnesses under controlled executable conditions. It is designed for research, benchmarking, diagnostics, and reproducibility studies.
+
+## Out-of-Scope Use
+
+FormulaCascade is not intended for training production models on evaluator-only hidden contracts, making decisions about individuals, or evaluating unrestricted spreadsheet UI automation, macro execution, or non-spreadsheet office workflows.
+
+## License
+
+Creative Commons Attribution-NonCommercial 4.0 International (**CC BY-NC 4.0**).
 
-The full 10K+ benchmark release and additional metadata will be made available through this repository.