PINNBench

A controlled benchmark for evaluating training-policy selection in hybrid Physics-Informed Neural Network (PINN) and neural-operator solvers. PINNBench accompanies the paper "PINNBench: A Benchmark and Evaluation Study of Training Policy Selection in Hybrid PINN-Operator Solvers" (anonymous submission, NeurIPS 2026 Evaluations and Datasets Track).

What is in this repository

This Hugging Face dataset hosts the benchmark protocol artifacts + logged results of 1,539 controlled training runs on 13 PDE configurations spanning 8 equation families. The dataset is not raw simulation data (PDE reference solutions are analytical and regenerated at runtime); it is the decision-relevant evaluation record that supports the paper's headline claims.

results_paper_combined/
├── routing_evaluation/
│   ├── results.json              # 13-PDE leave-one-out CV (450 routing decisions × 4 selectors)
│   ├── holdout.json              # 3-PDE held-out generalization
│   ├── regret_bound_validation.json   # 33/52 PDE × probe-window pairs
│   └── scaling_ablation.json     # routing accuracy vs. PDE count
├── meta_router/
│   └── results.json              # PDE-aware router (84.6% with 5+7 features)
├── stage_ablation/
│   └── *_ablation.json           # 9 PDEs × 2×2 (Stage1, Stage3) factorial × 10 seeds
├── adaptive_epsilon/
│   └── results.json              # 4 PDEs × 4 conditions × 5 seeds (causal-weight collapse)
├── wang_comparison/
│   └── *_results.json            # Wang-style single-stage causal probe (4 PDEs)
├── hypino_*/                     # HyPINO native, adapter, target-PINN adaptation probes
├── pinnacle_subset_5task/
│   └── results.json              # PINNacle 5-task executable subset
└── statistical_tests.json        # BH-FDR corrected, 27 tests

How to load

The recommended access pattern is direct JSON read; result schemas are documented in MANIFEST.md.

from huggingface_hub import hf_hub_download
import json

routing_path = hf_hub_download(
    "PINNBench/pinnbench",
    "results_paper_combined/routing_evaluation/results.json",
    repo_type="dataset",
)
with open(routing_path) as f:
    routing = json.load(f)

datasets-library config aliases (routing_evaluation, stage_ablation, meta_router, regret_bound_validation, adaptive_epsilon, external_probes) are declared in the YAML header above for convenience.

Verification

Every headline claim in the paper is recomputed from these JSONs by the script scripts/verify_claims.py in the source repository. Reproduced PASS results:

Claim	Source artifact	Computed	Paper
Total runs	union	1,510 enumerable + 29 probes	1,539
Nested PDE-aware routing accuracy	meta_router/results.json	84.62% (11/13)	84.6%
Full RF+PDE routing	meta_router/results.json	61.54% (8/13)	61.5%
Stage-2 compute savings	analytical	60.0% (K=3, Eₚ=50, E₂=500)	60%
Diagnostic regret bound	regret_bound_validation.json	33/52 overall, 33/39 if k∈{10,50,100}	33/52, 33/39
Accuracy–regret dissociation	routing_evaluation/results.json	77.27× (0.0850 / 0.0011)	77×
Family-macro accuracy (LOPO-F)	routing_evaluation/results.json	81.2% physics-loss-final (6/8)	81.2%
KdV1D causal effect (PDE residual)	rq1e_kdv_10seed_causal/results.json	0.0096 / 0.0105	0.010 / 0.011
Adaptive-ε mitigation (AdvDiff1D)	adaptive_epsilon/results.json	0.78 → 0.98	0.78 → 0.97

Reproducibility caveats

• All training results were computed at the final epoch of each stage (no best-checkpoint selection, no validation set).
• Evaluation points were regenerated per seed via torch.rand rather than loaded from a fixed grid; per-seed metric variance therefore includes evaluation-point sampling variance.
• The rq1e_kdv_10seed_causal/results.json summary aggregate has a nan-mean bug for some fields; per-seed means are recomputed by the verification script.

Croissant metadata

A validated Croissant 1.0 metadata file is included as croissant.json (RAI fields complete: data collection, preprocessing, annotation protocol, personal/sensitive information, safety, deidentification, fairness, biases, release/maintenance). Validate with:

https://huggingface.co/spaces/JoaquinVanschoren/croissant-checker

Citation

The paper is currently in submission to NeurIPS 2026 Evaluations and Datasets Track (double-blind). A BibTeX entry will be added to this dataset card after the review period.

License

Apache-2.0 for code and benchmark artifacts. PDE reference solutions are analytical and original to this work; no third-party data is redistributed.

Contact

During the anonymous review period, all communication is routed through the OpenReview discussion thread of the submission. After camera-ready, the maintainer details will be added here.