FINVECTOR · WORKED CASE 08

Missing access data should not become a zero

A ranking example that distinguishes unknown evidence from negative evidence and shows the reweighting arithmetic.

INPUT LEDGER

What is known, entered, or assumed.

InputValueOrigin
WeightsStocking 35; habitat 25; access 15; weather 15; distance 10Illustrative model
Candidate scores80, 72, unknown, 90, 60Illustrative normalized inputs
Missing componentAccessNo reliable public evidence
Unknown policyReweight known componentsDeclared model rule

REPRODUCIBLE CALCULATION

Follow the intermediate result.

01

Known weighted sum

Formula or rule: 80×35 + 72×25 + 90×15 + 60×10

Result: 6,550 weighted points

02

Known weight

Formula or rule: 35 + 25 + 15 + 10

Result: 85

03

Reweighted score

Formula or rule: 6,550 ÷ 85

Result: 77.1 / 100

04

Confidence label

Formula or rule: One decision layer missing

Result: Score shown with access unknown

DECISION READING

What the result means.

Assigning zero would falsely claim poor access; assigning a neutral value would invent evidence. Reweighting preserves the known comparison while a separate confidence label exposes the missing layer.

SENSITIVITY

What could change the answer.

  • If access is a mandatory safety gate, the candidate can be withheld instead of merely reweighted.
  • More missing layers should lower confidence even if the normalized score stays high.
  • Weights should be visible because changing them can reorder candidates.

BOUNDARIES

What this case does not prove.

  • The weights and component scores are illustrative, not a live recommendation.
  • A high score does not establish legal public access.
  • Unknown data must be verified with the responsible land or wildlife agency.

OFFICIAL SOURCES

Where factual context is verified.

RELATED FINVECTOR CASES

Change one assumption and compare again.

Each case keeps inputs, arithmetic, evidence, and uncertainty in separate layers.

07 · A stocking week is not a stocking day09 · A nearby gauge is a proxy, not the fishing reach