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Çѱ¹¼öÀÚ¿øÇÐȸ / v.31, no.1, 1998³â, pp.59-69
À¯Àü¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÑ ´ÉÇüȸ±Í¸ðÇüÀÇ °ËÁ¤ : ºóµµº° È«¼ö·®ÀÇ Áö¿ªºÐ¼®À» ´ë»óÀ¸·Î
( Calibration of the Ridge Regression Model with the Genetic Algorithm:Study on the Regional Flood Frequency Analysis )
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ºóµµº° È«¼ö·®ÀÇ Áö¿ªºÐ¼®À» À§ÇÏ¿© À¯¿ªÀÇ ÁöÇüƯ¼ºÀ» µ¶¸³º¯¼ö·Î ÀÌ¿ëÇϴ ȸ±Í¸ðÇüÀ» °ËÁ¤ÇÏ¿´´Ù. ±×·±µ¥ ÀÌµé µ¶¸³º¯¼öµé°£ÀÇ »ó°ü°ü°è°¡ Á¸ÀçÇÒ °æ¿ì ´ÉÇüȸ±Í¸ðÇüÀÌ ÀÌ¿ëµÇ±âµµ ÇÏ´Â ÀÌ ¹æ¹ýÀº ´ÙÁß°ø¼±¼º ¹®Á¦¸¦ ±Øº¹Çϴµ¥ ÀûÇÕÇÑ ¹æ¹ýÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. ´ÉÇüȸ±Í¸ðÇüÀ» ÃÖÀûÈ­Çϱâ À§Çؼ­´Â Á¶Á¤º¯¼ö°¡ Æ÷ÇԵǴ ºñ¿ëÇÔ¼ö¸¦ ÃÖ¼ÒÈ­ÇÏ¿©¾ß ÇÑ´Ù. º» ¿¬±¸¿¡¼­´Â ÀÌ ÃÖÀûÈ­¸¦ À§ÇÏ¿© À¯Àü¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÏ¿´´Ù. À¯Àü¾Ë°í¸®ÁòÀº ÀÚ¿¬ »ý¹°ÀÇ À¯Àü ¹× ÁøÈ­°úÁ¤À» ¸ð¹æÇÑ Ãß°èÇÐÀû Ž»ö¹æ¹ýÀ» ¸»ÇÑ´Ù. ÀÌ·¯ÇÑ À¯Àü¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÏ¿© Áö¿ªºÐ¼® ¸ðÇüÀ» °ËÁ¤ÇÑ °á°ú ¾ÈÁ¤µÈ ¸Å°³º¯¼öÀÇ °¡ÁßÄ¡¸¦ ¾òÀ» ¼ö ÀÖ¾ú´Ù. Çٽɿë¾î: À¯ÀüÀÚ ¾Ë°í¸®Áò, ´ÉÇüȸ±Í, Áö¿ªºÐ¼®, È«¼öºóµµÇؼ®
A regression model with basin physiographic characteristics as independent variables was calibrated for regional flood frequency analysis. In case that high correlations existing among the independent variables the ridge regression has been known to have capability of overcoming the problems of multicollinearity. To optimize the ridge regression model the cost function including regularization parameter must be minimized. In this research the genetic algorithm was applied on this optimization problem. The genetic algorithm is a stochastic search method that mimic the metaphor of natural biological heredity. Using this method the regression model could have optimized and stable weights of variables. Keywords: genetic algorithm, ridge regression, regional analysis. flood frequency analysis
 
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À¯ÀüÀÚ ¾Ë°í¸®Áò;´ÉÇüȸ±Í;Áö¿ªºÐ¼®;È«¼öºóµµÇؼ®;genetic algorithm;ridge regression;regional analysis;flood frequency analysis;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.31, no.1, 1998³â, pp.59-69
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920100780)
¾ð¾î : Çѱ¹¾î
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