Deriva — Derive the Algorithm

← Projectsmetrics-lab / L4Slices + Thresholds~18 min

one move: bound a failure

Compare a reference and current numeric stream with fixed bins, exposing both proportions and the largest distribution gap. In the Metrics Lab system, implement this level as a deterministic contract before composing it with the next service.

Required API

def drift_report(reference, current, bins):
    return {'reference': [...], 'current': [...], 'max_gap': ...}

Behavior

place values into fixed bins
normalize each stream independently
report the maximum absolute proportion gap

Examples — tap to reveal

Constraints

Use only the Python standard library.
Return deterministic values so every run can be compared with the contract.
Do not mutate caller-owned inputs.

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