5. ¸ðÇüÀÇ ºñ±³

¸ðÇü°£ÀÇ ºñ±³¿¡ ÀÖ¾î ù¹øÂ° ´Ü°è´Â IIA°¡Á¤¿¡ ´ëÇÑ °ËÁõÀ̶ó°í ÇÒ ¼ö ÀÖ´Ù. MNL¸ðÇüÀº IIA°¡Á¤¿¡ ±âÃÊÇϰí ÀÖ´Ù. ¶§¹®¿¡ ¸¸¾à IIA°¡Á¤ÀÌ ±â°¢µÇ´Â °æ¿ì, MNL¸ðÇü¿¡ ´ëÇÑ ´ë¾ÈÀû ¸ðÇüÀ¸·Î¼­ NL¸ðÇüÀÌ ¼º¸³ÇÏ°Ô µÈ´Ù. µû¶ó¼­ MNL ¸ðÇü¿¡ ´ëÇÑ °ËÁõ¿¡ ÀÖ¾î IIA°¡Á¤¿¡ ´ëÇÑ °ËÁõÀº ¹Ýµå½Ã ÀÌ·ç¾îÁ®¾ß ÇÏ´Â °ÍÀ¸·Î µÇ¾îÀÖ´Ù. MNL¸ðÇüÀÌ NL¸ðÇüÀÇ Æ¯¼öÇÑ ÇüÅÂÀ̱⿡, IIA°¡Á¤¿¡ ´ëÇÑ °ËÁõÀº inclusive valueÀÇ ÃßÁ¤°è¼öÀÎ 1-¥ò, Áï ¥è¿¡ ´ëÇÑ À¯ÀǼº°ËÁõÀ» ÅëÇØ °¡´ÉÇÏ´Ù. ¸¸¾à ¥è=1ÀÎ °æ¿ì NL¸ðÇüÀº MNL¸ðÇü°ú µ¿ÀÏÇØÁö¸ç, ÀÌ¿¡ ´ëÇÑ °ËÁõÀº likelihood ratio °ËÁõÀ̳ª, Wald°ËÁõÀ» ÀÌ¿ëÇÒ ¼ö ÀÖ´Ù(Hausman°ú McFadden 1984).

¸¸¾à ¥è=1ÀÎ ±Í¹«°¡¼³ÀÌ ±â°¢µÇ°í ¥è=0ÀÎ ±Í¹«°¡¼³ ¶ÇÇÑ ±â°¢µÇ´Â °æ¿ì¿¡´Â, IIA°¡Á¤Àº ¼º¸³µÇÁö ¾ÊÀ¸¸ç µû¶ó¼­ NL¸ðÇüÀÇ ¼³Á¤ÀÌ °¡´ÉÇØÁø´Ù. ±×·¯³ª ¾î´À °æ¿ìÀÌ°Ç ¥è°ªÀº 0°ú 1»çÀÌÀÇ °ªÀ» Áö³à¾ß¸¸ È¿¿ë±Ø´ëÈ­¸ðÇüÀÇ ±âº»°¡Á¤À» ÃæÁ·½ÃŰ°Ô µÈ´Ù.

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6. ÆòÇüº° ¼±ÅøðÇü

¾Õ¼­ ¾ÆÆÄÆ®ÀÇ °èÃþÀû ¼±ÅøðÇü¿¡ ÀÖ¾î Áß¿äÇÑ °èÃþº¯¼öÀÇ Çϳª·Î ÆòÇüÀÌ ÀÌ¿ëµÉ ¼ö ÀÖÀ½À» ÁöÀûÇÑ ¹Ù ÀÖ´Ù. ½ÇÁ¦·Î ºÐ¾ç ½Åû½Ã °¢ ½Ã°øÈ¸»ç´Â »óÀÌÇÑ ÆòÇüÀ» ¼±Åôë¾ÈÀ¸·Î Á¦½ÃÇϰí ÀÖÀ¸¸ç, ½ÅûÀÚ´Â ÀÚ½ÅÀÇ Ã»¾à¿¹±Ý(ȤÀº û¾à ÀúÃà)ÀÇ ±Ô¸ð¿¡ µû¶ó ÀÏÁ¤¹üÀ§ ³»¿¡¼­ ÆòÇüÀ» ÀÚÀ¯·ÎÀÌ ¼±ÅÃÇÒ ¼ö ÀÖ´Ù. ±×·¯³ª º» ¿¬±¸¿¡¼­´Â °èÃþº¯¼ö¿¡¼­ À̸¦ Á¦¿ÜÇϰí ÀÖ´Ù. ±× ÀÌÀ¯´Â ºñ·Ï û¾à¿¹±ÝÀÇ ¹üÀ§ ³»¿¡¼­ ÀÚÀ¯·Î¿î ¼±ÅÃÀÌ °¡´ÉÇÏ´Ù°í´Â Çϳª, ½ÅûÀÚÀÇ ´ëºÎºÐÀÌ ¹üÀ§ ³»¿¡¼­ ÃÖ´ëÆòÇüÀ» ¼±È£ÇÏ´Â °æÇâÀ» º¸À̰í ÀÖ°í, ÁÖ°øÀÇ °æ¿ì¿¡´Â Áß´ëÇü ¾ÆÆÄÆ®ºÐ¾çÀÌ °ÅÀÇ ¾ø´Â ¹Ý¸é, ¹Î¿µÀÇ °æ¿ì¿¡´Â ¼ÒÇü¾ÆÆÄÆ®ÀÇ ºÐ¾çÀÌ °ÅÀÇ ¾ø¾î ½Ã°øÈ¸»ç¿Í ÆòÇüÀ» ÇÔ²² °èÃþº¯¼ö·Î º¼ °æ¿ì °¢°¢ÀÇ º¯¼ö°¡ ¹ÌÄ¡´Â ¿µÇâÀÌ Áߺ¹µÉ °¡´É¼ºÀÌ ¹ß»ýÇϱ⠶§¹®ÀÌ´Ù.

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ÆòÇüº° ºÐ¼®À» À§ÇØ º» ¿¬±¸¿¡¼­´Â MNL¸ðÇü¸¸À» °ËÁõÇϵÇ, ¼ÒÇüÀÇ °æ¿ì¿¡´Â °Ç¿µÀ» Á¦¿ÜÇÑ ³ª¸ÓÁö 3°³ Áö¿ª 3°³È¸»ç¸¸À» ´ë»óÀ¸·Î logitºÐ¼®À» ½Ç½ÃÇÏ¿´À¸¸ç, ´ëÇüÀÇ °æ¿ì¿¡´Â ÆòÃ̰ú ÁÖ°øÀ» Á¦¿ÜÇÑ ³ª¸ÓÁö 2°³ Áö¿ª°ú 3°³ ¹Î¿µÈ¸»ç¸¸À» ´ë»óÀ¸·Î, ÁßÇüÀÇ °æ¿ì¿¡´Â ¸ðµç Áö¿ª°ú ½Ã°øÈ¸»ç¸¦ ÀÌ¿ëÇÏ¿´´Ù.

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(2) ÁßÇü¾ÆÆÄÆ®ÀÇ ¼±ÅÃ

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(3) ´ëÇü¾ÆÆÄÆ®ÀÇ ¼±ÅÃ

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ÀÌ»óÀÇ logitºÐ¼®°á°ú¸¦ ¿ä¾àÇϸé, ´ÙÀ½°ú °°´Ù.

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±èÁ¤È£ ¿Ü(1988), ÁÖÅýÃÀå¼ö±Þü°èºÐ¼®¿¬±¸:ÇÊÅ͸µÀ» Áß½ÉÀ¸·Î, ±¹Å俬 88-4, ±¹Åä°³¹ß¿¬±¸¿ø.

±èÁ¤È£ ¿Ü (1987), ÁÖÅúоçÁ¦µµ¿¡ °üÇÑ ¿¬±¸: ä±ÇÀÔÂûÁ¦µµ¸¦ Áß½ÉÀ¸·Î, ±¹Å俬 87-5, ±¹Åä°³¹ß¿¬±¸¿ø.

±èÁ¤È£ ¿Ü (1986), Áö¿ªº° ÁÖÅýÃÀå¿¡ °üÇÑ ¿¬±¸. ±¹Åä°³¹ß¿¬±¸¿ø.

±èÁ¤È£ ¿Ü (1990), ÁÖÅÃÁ¤Ã¥ÀÇ Æò°¡¿Í ¹æÇâ, ±¹Åä°³¹ß¿¬±¸¿ø.

±èÁ¤È£ ¿Ü (1991), ¼öµµ±Ç ¹× ºÎ»êÁö¿ªÀÇ ÁÖÅýÃÀå ºÐ¼®, ±¹Å俬 91-33, ±¹Åä°³¹ß¿¬±¸¿ø.

¹ÚÇå¼ö (1989), Áְż±Åÿ¡ ´ëÇÑ Æ¯¼ººÐ¼®¿¡ °üÇÑ ¿¬±¸. ¼­¿ï´ë ȯ°æ´ëÇпø, ¼®»çÇÐÀ§³í¹®.

ÀÌ±æ¼ø (1990), ·ÎÁþ¸ðÇüÀ» ÀÌ¿ëÇÑ ÁÖÅü±Åà °áÁ¤¿äÀο¡ ´ëÇÑ ºÐ¼®, ¿¬¼¼´ëÇб³ ´ëÇпø, ¹Ú»çÇÐÀ§³í¹®.

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