# Evaluation API

Calculate reconstruction metrics and write evaluation artifacts. Read [Validation scorecard](https://ambiqai.github.io/compressionkit/validation-scorecard/) for reference-signal definitions and comparison limits.

## Metrics

- PRD
- TruePRD
- compute_signal_metrics
- compute_ppg_physiokit_metrics
- summarize_physiokit_alignment
## Artifacts

- save_sample_artifacts