FA-65195 / Epidemic compartment models / Member archive

SIQR testing and isolation model: detection series · case 05

Reported daily detections accumulate instead of showing new positives.

Member previewVariant 5 · 3 implementations · 7 checks per implementation

Case contract

Daily Euler SIQR: infectives recover (gamma*I) or are detected (detect*I), both exits scaled down proportionally if they exceed I; isolated Q do not transmit and are released to R at Q/isolation_days; report daily detections, final Q and final R rounded to 3.

Why this case matters

Compartmental epidemic calculations drive outbreak forecasts, vaccine targets and hospital planning; a single wrong flow, rate conversion or boundary silently changes every downstream number.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression: moderate testing	`[[1.0, 2.095, 3.311, 4.675, 6.218, 7.973, 9.973, 12.253], 12.253, 35.079]`	`[[1.0, 1.195, 1.425, 1.695, 2.011, 2.377, 2.798, 3.277], 12.253, 35.079]`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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