FA-65220 / Epidemic compartment models / Member archive

Hospital occupancy from delayed admissions: peak tie-break · case 05

Plateaus report their last day as the peak instead of the first.

Member previewVariant 5 · 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: delay beyond series	`[[0.0, 0.0, 0.0], [0.0, 0.0, 0.0], 2]`	`[[0.0, 0.0, 0.0], [0.0, 0.0, 0.0], 0]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

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

Member access is invitation-based. Sign in with your invited account to inspect the sources.