Skip to content

Main content

Stag Hunt Risk Dominance Payoff Product Tool

Compare supplied unilateral-deviation loss products for two coordination equilibria using the strict risk-dominance criterion.

Loading tool…

Description

Compare strict stag-hunt risk-dominance products from supplied deviation losses.

Game-theoretic calculations depend on specified players, actions, payoff direction, probabilities and continuation assumptions. A single incentive term, coalition inequality or candidate best response is only part of a complete equilibrium argument. Supplied preferences and payoffs are model inputs rather than observed behavior or a moral allocation rule.

Compare strict stag-hunt risk-dominance products from supplied deviation losses.

When to use this tool

Use Stag Hunt Risk Dominance Payoff Product when checking the stated local payoff, strategy, matching or repeated-game condition.

How to use the tool and how it works

  1. Enter firstStagDeviationLoss, secondStagDeviationLoss, firstHareDeviationLoss, secondHareDeviationLoss. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read stagLossProduct, hareLossProduct, stagRiskDominates. Inspect stagRiskDominates before interpreting the associated values.

Require four nonnegative unilateral deviation losses. Multiply the two stag losses and the two hare losses; stagRiskDominates only when the first product is strictly larger.1

Input fieldMeaning and unitsAccepted input
firstStagDeviationLossFirst Stag Deviation LossRequired. Finite number; minimum 0.
secondStagDeviationLossSecond Stag Deviation LossRequired. Finite number; minimum 0.
firstHareDeviationLossFirst Hare Deviation LossRequired. Finite number; minimum 0.
secondHareDeviationLossSecond Hare Deviation LossRequired. Finite number; minimum 0.
Output fieldInterpretationReturned shape
stagLossProductStag Loss ProductRequired. Finite number.
hareLossProductHare Loss ProductRequired. Finite number.
stagRiskDominatesStrict product comparison; equality returns false without selecting hare as a unique winner.Required. Boolean.
json
{
  "input": {
    "firstStagDeviationLoss": 4,
    "secondStagDeviationLoss": 3,
    "firstHareDeviationLoss": 2,
    "secondHareDeviationLoss": 2
  },
  "output": {
    "stagLossProduct": 12,
    "hareLossProduct": 4,
    "stagRiskDominates": true
  }
}

Limitations and assumptions

  • Equality returns false, not a unique alternative winner; payoff consistency and the assumptions of a two-equilibrium coordination model are supplied rather than verified.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Use the complete game, feasible strategy space and justified information/continuation assumptions for equilibrium, welfare or actual decision analysis.

References

  1. Calculation and input contract: game-theory/stag-hunt-risk-dominance-payoff-product — tool.io

Similar or alternative tools