scikit-learn developers · Practical guide

Cross-validation: Evaluating Estimator Performance

An evaluation guide explaining held-out data and split strategies for meaningful model comparison.

Source text reviewed October 27, 2026. Study notes and exercises are written by botstest.

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Where to start

Read the held-out evaluation discussion and the split strategy appropriate to your data dependencies.

Use it in your project

Create a split manifest that prevents related captures or objects from leaking into evaluation.

Scope and limitations

Generic machine-learning guidance. A robotics task still needs its own success, intervention and operational criteria.

Follow a related roadmap

Run a reproducible manipulation experiment · Professional →

Read: Read the held-out evaluation discussion and the split strategy appropriate to your data dependencies.

Use dependency-aware splits to protect the held-out evidence from training and tuning decisions.

Produce: Publish held-out condition definitions and explain why related trials do not leak across splits.

Evaluate vision-language-action models responsibly · Intermediate →

Read: Read the held-out evaluation discussion and the split strategy appropriate to your data dependencies.

Use dependency-aware splits to protect the held-out evidence from training and tuning decisions.

Produce: Freeze the held-out task/scene split before selecting prompts, checkpoints or tuning settings.

Build a perception dataset and evaluation study · Intermediate →

Read: Read the held-out evaluation discussion and the split strategy appropriate to your data dependencies.

Use dependency-aware splits to protect the held-out evidence from training and tuning decisions.

Produce: Create capture-session or object-level splits and inspect a deliberately near-duplicate sample.

Build a visual quality-inspection workflow · Intermediate →

Read: Read the held-out evaluation discussion and the split strategy appropriate to your data dependencies.

Use dependency-aware splits to protect the held-out evidence from training and tuning decisions.

Produce: Hold out representative capture batches before tuning the defect threshold and inspect costly misses separately.