FA-65208 / Epidemic compartment models / Member archive

Hospital occupancy from delayed admissions: same-day admissions · case 03

Patients admitted today are not counted in today's occupancy.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

admissions[t] = hosp_frac*infections[t-delay] (0 before the delay); each admission occupies a bed on days t..t+los-1; return [admissions rounded 4, occupancy rounded 4, earliest peak day].

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: wave with 3 day delay	`[[0.0, 0.0, 0.0, 1.0, 2.0, 4.0, 6.0, 5.0, 3.0], [0, 0.0, 0.0, 0.0, 1.0, 3.0, 7.0, 12.0, 15.0], 8]`	`[[0.0, 0.0, 0.0, 1.0, 2.0, 4.0, 6.0, 5.0, 3.0], [0.0, 0.0, 0.0, 1.0, 3.0, 7.0, 13.0, 17.0, 18.0], 8]`	Failed

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