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¤Þ¤º (D, D) ¤Ï°ÊÁ°¤ÈƱ¤¸¤¯¥Ê¥Ã¥·¥å¶Ñ¹Õ¤Ë¤Ê¤Ã¤Æ¤ª¤ê¡¤(1, 1) ¤ÎÍøÆÀ¤ò¼Â¸½¤¹¤ë¡¥¤½¤Î¤Û¤«¤Ë (M, M) ¤â¥Ê¥Ã¥·¥å¶Ñ¹Õ¤Ë¤Ê¤Ã¤Æ¤ª¤ê¡¤ÍøÆÀ (4, 4) ¤ò¼Â¸½¤¹¤ë¤³¤È¤¬¤ï¤«¤ë¡¥¤Ç¡¤(M, M) ¤Î¶¯¤ß¤Ï¤½¤ì¤¬¡Ö¶¯¶Ñ¹Õ¡×¤È¸Æ¤Ð¤ì¤ë¶Ñ¹Õ¤Ë¤Ê¤Ã¤Æ¤¤¤ë¤³¤È¤À¡¥¤³¤ì¤Ï¤½¤ÎÀïά¤ÎÁȹ礻¤«¤é (¤Ò¤È¤ê¤È¤Ï¤«¤®¤é¤Ê¤¤) ²¿¿Í¤«¤Î¤Ò¤È¤Ó¤È¤¬Àïά¤òÊѤ¨¤¿¤È¤³¤í¤Ç¡¤Èà¤é¤¹¤Ù¤Æ¤ÎÍøÆÀ¤¬²þÁ±¤¹¤ë¤³¤È¤Ï¤Ê¤¤¤è¤¦¤ÊÀïά¥Ú¥¢¤Î¤³¤È¤Ç¤¢¤ë¡¥¤Ä¤Þ¤ê¡¤(M, M) ¤òÎ¥¤ì¤Æ¤¿¤È¤¨¤Ð¤Õ¤¿¤ê¤¬ (D, C) ¤Ë¤¦¤Ä¤ì¤ÐÍøÆÀ¤Ï (4, 4) ¤«¤é (6, 0) ¤ÈÊѤï¤ë¤¬¡¤¤Ò¤È¤ê¤ÎÍøÆÀ¤Ï²¼¤¬¤Ã¤Æ¤¤¤ë¡¥¤Û¤«¤Ë¤É¤³¤Ë°Ü¤í¤¦¤È¤â¡¤Î¾¼Ô¤ÎÍøÆÀ¤¬Æ±»þ¤Ë²þÁ±¤¹¤ë¤³¤È¤Ï¤Ê¤¤¡¥°ìÊý¤Ç¡¤¤â¤¦¤Ò¤È¤Ä¤Î¥Ê¥Ã¥·¥å¶Ñ¹Õ (D, D) ¤«¤é¤Ï¤Õ¤¿¤ê¤¬ (C, C) ¤Ê¤ê (M, M) ¤Ê¤ê¤Ë¤¦¤Ä¤ì¤ÐξÊý¤ÎÍøÆÀ¤¬¾å¤¬¤ë¡¥¤Ä¤Þ¤ê (D, D) ¤Ï¶¯¶Ñ¹Õ¤Ç¤Ï¤Ê¤¤¡¥¡Ö¶¯¶Ñ¹Õ¡×¤È¤¤¤¦³µÇ°¤Ë¹Ê¤ê¹þ¤á¤Ð¡¤(M, M) ¤À¤±¤¬³ºÅö¤¹¤ë¤ï¤±¤Ç¤¢¤ê¡¤¼ü¿Í¤Î¥¸¥ì¥ó¥Þ¤Î²ò¾Ã¤Ë¤Ê¤Ã¤Æ¤¤¤ë¡¥ (¤â¤È¤Î¥²¡¼¥à¼«ÂΤΤǤϤʤ¯¡¤Ãç²ð¼Ô¤òƳÆþ¤·¤¿¥²¡¼¥à¤Î¶¯¶Ñ¹Õ¤Ê¤Î¤Ç "strong mediated equilibrium"¤ÈÈà¤é¤Ï¤è¤Ö¡¥)

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°Ê¾å¾Ò²ð¤·¤¿ Monderer and Tennenholtz (2006) ¤Ë¤è¤ë²ò¾ÃË¡¤È»÷¤¿ÊýË¡¤È¤·¤Æ¡¤¸½ºß¤Ç¤Ï¤Û¤È¤ó¤É˺¤ì¤é¤ì¤Æ¤·¤Þ¤Ã¤¿¡Ö¥á¥¿¥²¡¼¥à¡×¤Ë¤è¤ë²ò¾ÃË¡¤È¤¤¤¦¤Î¤¬¤¢¤ë (¤¿¤·¤«Èà¤é¤Ï¸ÀµÚ¤·¤Æ¤¤¤Ê¤¤)¡¥¥²¡¼¥àÍýÏÀ¤ÎÀìÌç²È¤Ç¤â¼ã¤¤À¤Âå¤ÏÃΤé¤Ê¤¤¤«¤â¤·¤ì¤Ê¤¤¡¥¤·¤¿¤¬¤Ã¤Æ¼«Ê¬¤â¤Û¤È¤ó¤ÉÃΤé¤Ê¤¤¤ï¤±¤Ç¤¢¤ë¤¬¡¤¤³¤ì¤Ï¤¿¤·¤«¼«Ê¬¤ÎÀïά¤òÁê¼ê¤ÎÀïά¤Ë°Í¸¤µ¤»¡¤¤¿¤È¤¨¤Ð¡Ö¥­¥ß¤¬¶¨ÎϤ¹¤ë¤Ê¤é¥Ü¥¯¤â¶¨ÎÏ¡¤¥­¥ß¤¬Èó¶¨ÎϤʤé¥Ü¥¯¤âÈó¶¨ÎϡפȤ¤¤Ã¤¿Àïά¤ò¹Í¤¨¤¿¤È»×¤¦¡¥¤³¤³¤ÇÌäÂê¤Ë¤Ê¤ë¤Î¤Ï¡¤¤â¤È¤Î¼ü¿Í¤Î¥¸¥ì¥ó¥Þ¤¬¸ß¤¤¤ËÁê¼ê¤ÎÀïά¤ò¸«¤º¤Ë¼«Ê¬¤ÎÀïά¤ò·è¤á¤ë¤È¤¤¤¦¡¤¡ÖƱ»þ·èÄê¡×¤Î¥²¡¼¥à¤Ç¤¢¤Ã¤¿¤³¤È¤À¡¥¡Ö¥á¥¿¥²¡¼¥à¡×¤ÎÎत¤ÎÀïά¤Î°Í¸À­¤ò»ý¤Á½Ð¤¹¤È¤É¤¦¤·¤Æ¤â°ÅÌÛŪ¤Ë¡Ö»þ´Ö¡×¤ÎÍ×ÁǤ¬Æþ¤Ã¤Æ¤­¤Æ¡ÖƱ»þ·èÄê¡×¤«¤éÎ¥¤ì¤ë¤³¤È¤Ë¤Ê¤ë¤ó¤Ç¤Ï¤Ê¤¤¤«¡¥¥²¡¼¥à¤ò³ÈÄ¥¤·¤Æ¤¤¤ë¤ï¤±¤Ê¤Î¤Ç»þ´Ö¤¬Æþ¤ë¤³¤È¼«ÂΤϤޤÁ¤¬¤¤¤Ç¤Ï¤Ê¤¤ (·«¤êÊÖ¤·¥²¡¼¥à¤Ç¤â»þ´Ö¤¬Æþ¤ë¤·) ¤¬¡¤ ¤Ç¤­¤ì¤ÐƱ»þ·èÄê¤ÎÀßÄê¤ÏÊѤ¨¤º¤Ë¥¸¥ì¥ó¥Þ¤ò²ò¾Ã¤·¤¿¤¤¤â¤Î¤À¡¥ (¢«¼ãÇڤ椨¤³¤ÎÃÊÍî¤Ï¤Þ¤È¤â¤ÊÃ챤ä»ñÎÁ¤Ê¤·¤ÇµÄÏÀ¤·¤Æ¤¤¤ë¤Î¤Ç¤¢¤Þ¤ê¿®ÍѤ·¤Ê¤¤¤Û¤¦¤¬¤¤¤¤¡¥)

¼ØÂ­¡¥¥á¥¿¥²¡¼¥à¤Ï¤Û¤È¤ó¤É˺¤ì¤é¤ì¤Æ¤·¤Þ¤Ã¤¿¤È¤¤¤¦¤Î¤Ï·ÐºÑ³Ø¤Ë¤«¤ó¤¹¤ë¤«¤®¤ê¥¦¥½¤Ç¤Ï¤Ê¤¤¤¬¡¤»àÌǤ·¤¿¤ï¤±¤Ç¤Ï¤Ê¤¤¡¥¤ï¤¬Ê¿À®¹áÀîÂç³Ø¤Î·ÐºÑ³ØÉô¤Ï10ǯ¤Û¤ÉÁ°¤Ë¡Ö¥³¥ó¥Õ¥ê¥¯¥È²òÀϡפÎʬÌî¤ÇÍýÏÀ²È¤ò¸øÊ礷¤ÆºÎÍѤ·¤¿¤³¤È¤¬¤¢¤ë¡¥¤½¤ÎʬÌ¤½¤¬¥á¥¿¥²¡¼¥àÍýÏÀ¤ÎÊÌ̾ (¤¢¤ë¤¤¤ÏȯŸ·Á¡©) ¤Ç¤¢¤ë¡¥·ÐºÑ³ØÉô¤ÎºÎÍÑ¤ÏÆÃÄê¤Î¸õÊä¼Ô¤òÁÛÄꤷ¤Æ¤¤¤ë¤ï¤±¤Ç¤â¤Ê¤¤¤Î¤Ë¡¤¤·¤Ð¤·¤Ð¤«¤Ê¤ê (¤­¤ï¤á¤Æ¡©) ¥Þ¥¤¥Ê¡¼¤ÊʬÌî¤È¤¤¤¦¤«¡¤¤Ò¤¸¤ç¤¦¤Ë¸ÂÄꤵ¤ì¤¿Ê¬Ìî¤ò»ØÄꤹ¤ë¤³¤È¤¬¤¢¤Ã¤¿¡¥¤¿¤È¤¨¤Ð¡Ö¼Ò²ñ³Ø¡×¤Ê¤é¤º¡Ö¼Ò²ñ¥Í¥Ã¥È¥ï¡¼¥¯Ê¬ÀϡפǸøÊ礷¤¿¤ê¤·¤¿¡¥(¶áǯ¥Ý¥Ô¥å¥é¡¼¤Ë¤Ê¤Ã¤Æ¤­¤Æ¤¤¤ë¤È¤Ï¤¤¤¨¡¤ÆüËܸì¤Îʬ¤«¤ë¡Ö¼Ò²ñ¥Í¥Ã¥È¥ï¡¼¥¯Ê¬ÀÏ¡×ÀìÌç²È¤¬¤¤¤Ã¤¿¤¤²¿¿Í¤¤¤ë¤ó¤À¡©) ¤³¤Á¤é¤Ï¸Å¤¤¤È¤¤¤¦¤è¤ê¤Ï¿·¤·¤¹¤®¤Æ¥Þ¥¤¥Ê¡¼¤ÊÎ㤫¤â¤·¤ì¤Ê¤¤¡¥

¤µ¤¤¤ï¤¤ Monderer and Tennenholtz (2006) ¤Î²ò¾ÃË¡¤ÏƱ»þ·èÄꥲ¡¼¥à¤«¤é³°¤ì¤ë¤â¤Î¤Ç¤Ï¤Ê¤¤¤È»×¤¦¡¥Ãç²ð¼Ô¤ÏÄ󶡤¹¤ë¥µ¡¼¥Ó¥¹¤ò¤½¤ì¤¾¤ì¤Î¥×¥ì¡¼¥ä¡¼¤¬ÍøÍѤ·¤Æ¤¯¤ì¤¿¤«¤É¤¦¤«¤òÃΤ俤¦¤¨¤Ç¹Ôư¤¹¤ë¤³¤È¤«¤é»þ´Ö¤Ï°ÅÌÛŪ¤Ë¤ÏÆþ¤Ã¤Æ¤¤¤ë¤È¤¤¤¨¤ë¤«¤â¤·¤ì¤Ê¤¤¡¥¤·¤«¤·¤Õ¤¿¤ê¤Î¥×¥ì¡¼¥ä¡¼¤ËÃíÌܤ¹¤ì¤Ð¡¤¤Ù¤Ä¤ËÁê¼ê¤¬Ãç²ð¥µ¡¼¥Ó¥¹¤òÍøÍѤ·¤Æ¤¤¤ë¤«¤É¤¦¤«¤ò³Îǧ¤·¤¿¾å¤Ç¤³¤Á¤é¤ÎÀïά¤ò·è¤á¤Æ¤¤¤ë¤ï¤±¤Ç¤Ï¤Ê¤¤¤¿¤á¡¤Æ±»þ·èÄê¤Î¥²¡¼¥à¤È¹Í¤¨¤Æ¤è¤¤¤À¤í¤¦¡¥¤Þ¤¿¡¤¡ÖÃç²ð¼Ô¡×¤È¤¤¤Ã¤Æ¤â¡ÖÃçºÛ¡×¤È¤«¡ÖÄ´Ää¡×¤Î¤è¤¦¤ÊÀѶËŪ¤Ê¤³¤È¤ò¤¹¤ë¤ï¤±¤Ç¤Ï¤Ê¤¤¡¥¤Þ¤Ã¤¿¤¯¼õưŪ¤Ë¹Ôư¤¹¤ë¤À¤±¤Î¡ÖÇÞ²ð¡×¤Ë¤¹¤®¤Ê¤¤¥³¥ó¥Ô¥å¡¼¥¿¡¼¥×¥í¥°¥é¥à¤À¤Ã¤¿¤ê¤¹¤ë¤ï¤±¤À¤«¤é¡¤¡ÖÃç²ð¼Ô¡×¤ò¥×¥ì¡¼¥ä¡¼¤«¤é³°¤¹¤³¤È¤âÀµÅö²½¤Ç¤­¤ë¤À¤í¤¦¡¥

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»²¹Íʸ¸¥. Dov Monderer and Moshe Tennenholtz. Strong mediated equilibrium. In Proceedings of AAAI 6, 2006.

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