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configs:
- config_name: benchmark_432
data_dir: "hf_viewer"
drop_labels: true
---
# ChartBench-E Benchmark 432
This repository contains the frozen 432-sample benchmark build used in the paper:
> ChartBench-E: a benchmark for evaluating stable chart-to-values reading under increasing information load
## What Is Included
- `hf_viewer/{train,validation,test}/`
- Hugging Face viewer-friendly split layout for the paper benchmark
- `metadata/formal_all18_432.jsonl`
- canonical manifest for the 432 released samples
- `metadata/splits/{train,val,test}.jsonl`
- split-specific manifests
- `images/`
- rendered chart images for the 432 benchmark samples
- `tables/`
- table-first ground-truth CSV files
- `programs/`
- chart program / generation metadata JSON files
- `objects/`
- object-level chart metadata JSON files
- `evaluation/`
- truth files used by the formal paper workflow
- `docs/chartbench_e_rebuilt_README.md`
- codebase README snapshot
- `docs/chartbench_e_paper.pdf`
- paper PDF snapshot bundled with this release
## Release Summary
- Samples: `432`
- Chart families: `18`
- Samples per chart family: `24`
- Difficulty tiers:
- `L1`: `144`
- `L2`: `144`
- `L3`: `144`
- Splits:
- `train`: `289`
- `val`: `50`
- `test`: `93`
## Data Fields
The public viewer layout in `hf_viewer/{train,validation,test}/metadata.jsonl` keeps a slimmer schema:
- `sample_id`
- `chart_id`
- `chart_type`
- `chart_group`
- `image_path`
- `values`
- `n_series`
- `n_points`
- `difficulty_tier`
- `difficulty_components`
- `challenge_tags`
- `source_kind`
- `layout_family`
- `split`
- `suite_id`
- `annotation`
- `axis_scale`
- `x_labels`
- `series_labels`
- `candidate_pool`
- `table_path`
- `program_path`
- `object_path`
The canonical audit manifest remains available in `metadata/formal_all18_432.jsonl`.
## Notes
- This is the benchmark release cited by the manuscript.
- Code, prompt templates, evaluation scripts, and generation utilities live in:
- `https://github.com/luojueling/ChartBench-E`
- The broader 7,506-sample released pool is published separately to keep this benchmark repo stable and viewer-friendly.
## Suggested Citation
```bibtex
@misc{chartbenche2026benchmark,
title = {ChartBench-E Benchmark 432},
author = {Hui Long and Jueling Luo and Si Xie and Haoli Yu and Juncheng Ye and Xutao Deng},
year = {2026},
howpublished = {\url{https://huggingface.co/datasets/xiaoluo11/ChartBench-E}},
note = {Frozen 432-sample benchmark release used in the manuscript}
}
```
## License
This release contains synthetic benchmark artifacts assembled for research evaluation. A project-level license statement should be added or updated before wider redistribution beyond the current release workflow.
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