FA-65087 / Epidemic compartment models / Member archive

SIR with daily all-or-nothing vaccination campaign: mixing denominator · case 02

Vaccination makes remaining susceptibles meet infectives more often.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Each day from day index start_day (inclusive), dose=min(doses_per_day, S) is given to susceptibles before transmission; dose*efficacy moves S->V; failed vaccinees stay in S; mixing uses the full pop; return [S, I, R, V, doses administered] 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: city campaign from day 5	`[2124.133, 979.149, 2396.718, 4500.0, 5000.0]`	`[4007.174, 324.024, 1168.803, 4500.0, 5000.0]`	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.