π‘ Game?
The happiness of each participant with the outcome depends not just on his or her own decision but on the decisions made by everyone.
κ²μ μ°Έκ°μλ€μ κ²°κ³Όμ λν λ§μ‘±μ κ°κ°μΈμ κ²°μ μ μν΄μ κ²°μ λλ κ²μ΄ μλ λͺ¨λμ μν΄μ κ²°μ λλ κ².
π Game μκ°
- λ§μ½ μ°Έκ°μ λλ€ λ°νλ₯Ό μ€λΉνλ€λ©΄, λλ€ 90μ μ© μ»λλ€.
- λ§μ½ μ°Έκ°μ λλ€ μνμ μ€λΉνλ€λ©΄, λλ€ 88μ μ© μ»λλ€.
- λ§μ½ μ΄λ€ νλͺ μ΄ μν μ€λΉλ₯Ό ν λ λ€λ₯Έ νλͺ μ λ°νλ₯Ό μ€λΉνλ€λ©΄, λ°νλ₯Ό μ€λΉν μ¬λμ 86μ , μνμ μ€λΉν μ¬λμ 92μ μ μ»λλ€.
B prepared for the Presentation | B prepared for the Exam | |
A prepared for the Presentation | A: 90 B: 90 | A: 86 B: 92 |
A prepared for the Exam | A: 92 B: 86 | A: 88 B: 88 |
- λλͺ μ μ°Έκ°μλ§ μ°Έμ¬ ν μ μλ€.
- κ°κ°μ μ°Έκ°μλ κ°κ°μΈμ μ λ΅μ λ§μΆ° κ°λ³μ μΌλ‘(SEPARATELY) νλ(Presentation, Exam)μ μ νν μ μλ€.
- μ νν νλμ λ°λΌ μ°Έκ°μλ€μ Payoff(보μ)μ μ μλ₯Ό ν΅ν΄ λ°μ κ²μ΄λ€.
- Rational Play ν΄μΌ νλ€.
π‘ Rational Playλ?
You and your partner only care about maximizing your own average grade.
μ°Έκ°μλ€μ μ€μ§ μμ μ μ μλ₯Ό λμ΄λλ°λ§ κ΄μ¬μ΄ μλ€. λ€λ₯Έ μ°Έκ°μλ₯Ό μ κ²½μ°μ§ μμ κ²μ΄λ€.
π κ²°κ³Ό
μλλ°©μ΄ λ¬΄μμ νλ λΉμ μ EXAMλ§μ μ νν κ²μ΄λ€.
Why?
μλλ°©μ΄ Presentationμ μ ννμ λ λΉμ μ Examμ μ ννλ κ²μ΄ μ’κ³ ,
μλλ°©μ΄ Examμ μ ννμ λλ λ§μ°¬κ°μ§λ‘ λΉμ μ Examμ μ ννλ κ²μ΄ μ’κΈ° λλ¬Έμ΄λ€.
Exam = Strictly dominant strategy
π‘ Strictly dominant strategy ( μλ°ν μ§λ°°μ μΈ μ λ΅ )λ?
When a player has a strategy that is strictly better than all other options regardless of what the other player does.
μ μλ λ€λ₯Έ μ μλ€μ μ νκ³Όλ μκ΄ μλ μ΄λ€ μ λ΅λ³΄λ€ κ°μ₯ μ’μ μ λ΅μ΄ νλλ‘ μ ν΄μ§λ κ²μ λ§νλ€.
νμ§λ§, μλλ°© λν Strictly dominant strategyμΈ Examμ μ νν κ²μ΄λ€.
κ·Έλ λ€λ©΄, κ²°κ΅ λλ€ 88μ μ λ°λλ€.
π‘ Striking Phenomenon ( μ€νΈλΌμ΄νΉ νμ )
μλ,,, λλ€ λμ νμ λ°νλ₯Ό μ€λΉνλ€λ©΄ λλ€ μ¬μ΄μ’κ² 88μ λ³΄λ€ λμ 90μ μ λ°μ μ μμλ€...
νμ§λ§ Rational Playμ΄κΈ° λλ¬Έμ κ·Έλ΄ μ μλ€.
μ°Έκ³ : https://www.cs.cornell.edu/home/kleinber/networks-book/
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