Software Application/Game Theory

[Game Theory] Performance-Enhancing Drugs Game ( λŠ₯λ ₯ ν–₯상 λ§ˆμ•½ κ²Œμž„)

πŸ’‘ 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. 

κ²Œμž„ μ°Έκ°€μžλ“€μ˜ 결과에 λŒ€ν•œ λ§Œμ‘±μ€ 개개인의 결정에 μ˜ν•΄μ„œ κ²°μ •λ˜λŠ” 것이 μ•„λ‹Œ λͺ¨λ‘μ˜ μ˜ν•΄μ„œ κ²°μ •λ˜λŠ” 것.

 

 

πŸ” Game μ†Œκ°œ

  • 두 λͺ…μ˜ μš΄λ™μ„ μˆ˜κ°€ μžˆλ‹€.
  • 각각의 μš΄λ™ μ„ μˆ˜λŠ” μ„±λŠ₯을 ν–₯상해 높은 점수λ₯Ό μ–»κΈ° μœ„ν•΄ λ§ˆμ•½μ„ λ³΅μš©ν•  수 있고, λ³΅μš©ν•˜μ§€ μ•Šμ„ 수 μžˆλ‹€.
  • μ•„λž˜ μš΄λ™μ„ μˆ˜λ“€μ˜ 선택에 λ”°λ₯Έ 점수(Payoff)κ°€ μžˆλ‹€.
  μš΄λ™μ„ μˆ˜ B - λ§ˆμ•½ λ³΅μš©ν•˜μ§€ μ•ŠλŠ”λ‹€. μš΄λ™μ„ μˆ˜ B - λ§ˆμ•½ λ³΅μš©ν•œλ‹€.
μš΄λ™μ„ μˆ˜ A - λ§ˆμ•½ λ³΅μš©ν•˜μ§€ μ•ŠλŠ”λ‹€. A: 3 B: 3 A: 1 B: 4
μš΄λ™μ„ μˆ˜ A - λ§ˆμ•½ λ³΅μš©ν•œλ‹€. A: 4 B: 1 A: 2 B: 2
  • Rational Playλ₯Ό ν•΄μ•Όν•œλ‹€.

 

πŸ” κ²°κ³Ό

두 μš΄λ™μ„ μˆ˜λ“€μ€ μ–΄λ–€ 선택을 ν•  것인가?

 

이 κ²Œμž„λ„ μ—­μ‹œ Strictly dominant strategyκ°€ μ‘΄μž¬ν•΄ 

두 μš΄λ™μ„ μˆ˜λ“€μ€ κ²°κ΅­ λ§ˆμ•½μ„ λ³΅μš©ν•  것이닀...

 

λ§Œμ•½ μš΄λ™μ„ μˆ˜ Bκ°€ λ§ˆμ•½μ„ λ³΅μš©ν•˜μ§€ μ•ŠλŠ”λ‹€λ©΄ μš΄λ™μ„ μˆ˜ AλŠ” λ§ˆμ•½μ„ λ³΅μš©ν•΄μ„œ 높은 점수λ₯Ό μ–»λŠ” 것이 μ’‹λ‹€.

그리고 μš΄λ™μ„ μˆ˜ Bκ°€ λ§ˆμ•½μ„ λ³΅μš©ν•΄λ„ λ§ˆμ°¬κ°€μ§€λ‘œ μš΄λ™μ„ μˆ˜ AλŠ” λ§ˆμ•½μ„ λ³΅μš©ν•΄μ„œ 높은 점수λ₯Ό 얻을 것이닀.

 

κ²°κ΅­ μš΄λ™μ„ μˆ˜ λͺ¨λ‘ λ§ˆμ•½μ„ λ³΅μš©ν•˜λŠ” 것을 선택해 2점을 받을 것이닀.

 

πŸ’‘ Striking Phenomenon ( μŠ€νŠΈλΌμ΄ν‚Ή ν˜„μƒ )

 

λ§Œμ•½ μš΄λ™μ„ μˆ˜ A와 Bκ°€ λ™μ˜ν•˜μ— λ‘˜ λ‹€ λ§ˆμ•½μ„ λ³΅μš©ν•˜μ§€ μ•ŠλŠ”λ‹€λ©΄,,,, λ‘˜ λ‹€ ν–‰λ³΅ν•˜κ²Œ 3점을 μ–»μœΌλ©° κ±΄κ°•ν–ˆμ„ 것이닀...

ν•˜μ§€λ§Œ Rational Play 쑰건 λ•Œλ¬Έμ—...

 

μ°Έκ³  : https://www.cs.cornell.edu/home/kleinber/networks-book/

λ°˜μ‘ν˜•