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Prisoner’s Dilemma: Thoughts on Harvesting

Prisoner’s Dilemma: Thoughts on Harvesting. Robert L. West & Matthew Kelly Institute of Cognitive Science Carleton University. Prisoner’s Dilemma. Lebiere , Wallach & West. Failure to Replicate. Problem. Shared memory in original model Too noisy without it

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Prisoner’s Dilemma: Thoughts on Harvesting

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  1. Prisoner’s Dilemma: Thoughts on Harvesting Robert L. West & Matthew Kelly Institute of Cognitive Science Carleton University

  2. Prisoner’s Dilemma

  3. Lebiere, Wallach & West

  4. Failure to Replicate

  5. Problem • Shared memory in original model • Too noisy without it • Important lesson for multi-agent simulations • Sensitive to initial conditions • Solutions • Blending • Lags • Rock = 2 • Harvesting

  6. Lag 0: Blend

  7. Lag 0: Blend + Harvest

  8. Lag 0: Blend + Double

  9. Lag 0: Blend + Double + Harvest

  10. Lag 1: Blend

  11. Lag1: Blend + Harvest

  12. Lag 1: Blend + Double

  13. Lag 1: Blend + Double + Harvest

  14. Stochastic Resonance

  15. Rational Analysis • Harvest a prediction • Chunk activation increased • Confirm prediction • Chunk activation increased again • Disconfirm prediction • Correct chunk gets activation increased • But not more than the incorrect chunk • Does not map activation to actual results

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