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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö ¼ÒÇÁÆ®¿þ¾î ¹× µ¥ÀÌÅÍ °øÇÐ

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Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) À¯Àü ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÑ ±¹¼Ò°¡Áßȸ±ÍÀÇ ´ÙÁ߸𵨠°áÇÕÀ» À§ÇÑ Á¡ÁøÀû ¾Ó»óºí ÇнÀ
¿µ¹®Á¦¸ñ(English Title) Incremental Ensemble Learning for The Combination of Multiple Models of Locally Weighted Regression Using Genetic Algorithm
ÀúÀÚ(Author) ±è»óÈÆ   Á¤º´Èñ   ÀÌ°ÇÈ£   Kim Sang Hun   Chung Byung Hee   Lee Gun Ho  
¿ø¹®¼ö·Ïó(Citation) VOL 07 NO. 09 PP. 0351 ~ 0360 (2018. 09)
Çѱ۳»¿ë
(Korean Abstract)
ÀüÅëÀûÀ¸·Î ³ªÅÂÇÑ ÇнÀ¿¡ ÇØ´çÇÏ´Â ±¹¼Ò°¡Áßȸ±Í(LWR: Locally Weighted Regression)¸ðµ¨Àº ÀԷº¯¼öÀÎ ÁúÀÇÁöÁ¡¿¡ µû¶ó ¿¹ÃøÀÇ Çظ¦ ¾ò±â À§ÇØ ÀÏÁ¤±¸°£ ¹üÀ§³»ÀÇ ÇнÀ µ¥ÀÌÅ͸¦ ´ë»óÀ¸·Î ÁúÀÇÁöÁ¡ÀÇ °Å¸®¿¡ µû¶ó °¡Áß°ªÀ» ´Þ¸® ºÎ¿©ÇÏ¿© ÇнÀ ÇÑ °á°ú·Î ¾òÀº ªÀº ±¸°£³»ÀÇ È¸±Í½ÄÀÌ´Ù. º» ¿¬±¸´Â ¸Þ¸ð¸® ±â¹ÝÇнÀÀÇ ÇüÅ¿¡ ÇØ´çÇÏ´Â LWRÀ» À§ÇÑ Á¡ÁøÀû ¾Ó»óºí ÇнÀ°úÁ¤À» Á¦¾ÈÇÑ´Ù. LWR¸¦ À§ÇÑ º» ¿¬±¸ÀÇ Á¡ÁøÀû ¾Ó»óºí ÇнÀ¹ýÀº À¯Àü¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÏ¿© ½Ã°£¿¡ µû¶ó LWR¸ðµ¨µéÀ» ¼øÂ÷ÀûÀ¸·Î »ý¼ºÇÏ°í ÅëÇÕÇÏ´Â °ÍÀÌ´Ù. ±âÁ¸ÀÇ LWR ÇÑ°è´Â ÀεðÄÉÀÌÅÍ ÇÔ¼ö¿Í ÇнÀ µ¥ÀÌÅÍÀÇ ¼±Åÿ¡ µû¶ó ´ÙÁßÀÇ LWR¸ðµ¨ÀÌ »ý¼ºµÉ ¼ö ÀÖÀ¸¸ç ÀÌ ¸ðµ¨¿¡ µû¶ó ¿¹Ãø ÇØÀÇ Áúµµ ´Þ¶óÁú ¼ö ÀÖ´Ù. ÇÏÁö¸¸ ´ÙÁßÀÇ LWR ¸ðµ¨ÀÇ ¼±ÅÃÀ̳ª °áÇÕÀÇ ¹®Á¦ ÇØ°áÀ» À§ÇÑ ¿¬±¸°¡ ¼öÇàµÇÁö ¾Ê¾Ò´Ù. º» ¿¬±¸¿¡¼­´Â ÀεðÄÉÀÌÅÍ ÇÔ¼ö¿Í ÇнÀ µ¥ÀÌÅÍ¿¡ µû¶ó Ãʱâ LWR ¸ðµ¨À» »ý¼ºÇÑ ÈÄ ÁøÈ­ ÇнÀ °úÁ¤À» ¹Ýº¹ÇÏ¿© ÀûÀýÇÑ ÀεðÄÉÀÌÅÍ ÇÔ¼ö¸¦ ¼±ÅÃÇÏ¸ç ¶ÇÇÑ ´Ù¸¥ ÇнÀ µ¥ÀÌÅÍ¿¡ Àû¿ëÇÑ LWR ¸ðµ¨ÀÇ Æò°¡¿Í °³¼±À» ÅëÇÏ¿© ÇнÀ µ¥ÀÌÅÍ·Î ÀÎÇÑ ÆíÇâÀ» ±Øº¹ÇÏ°íÀÚ ÇÑ´Ù. ¸ðµç ±¸°£¿¡ ´ëÇØ µ¥ÀÌÅÍ°¡ ¹ß»ý µÇ¸é Á¡ÁøÀûÀ¸·Î LWR¸ðµ¨À» »ý¼ºÇÏ¿© º¸°üÇÏ´Â ¿­½ÉÇнÀ(Eager learning)¹æ½ÄÀ» ÃëÇÏ°í ÀÖ´Ù. ƯÁ¤ ½ÃÁ¡¿¡ ¿¹ÃøÀÇ Çظ¦ ¾ò±â À§ÇØ ÀÏÁ¤±¸°£ ³»¿¡ ½Å±Ô·Î ¹ß»ýµÈ µ¥ÀÌÅ͵éÀ» ±â¹ÝÀ¸·Î LWR¸ðµ¨À» »ý¼ºÇÑ ÈÄ À¯ÀüÀÚ ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÏ¿© ±¸°£ ³»ÀÇ ±âÁ¸ LWR¸ðµ¨µé°ú °áÇÕÇÏ´Â ¹æ½ÄÀÌ´Ù. Á¦¾ÈÇÏ´Â ÇнÀ¹æ¹ýÀº ±âÁ¸ ´Ü¼øÆò±Õ¹ýÀ» ÀÌ¿ëÇÑ ´ÙÁß LWR¸ðµ¨µéÀÇ ¼±Åùæ¹ý º¸´Ù ÀûÇÕµµ Æò°¡¿¡¼­ ¿ì¼öÇÑ °á°ú¸¦ º¸¿©ÁÖ°í ÀÖ´Ù. ƯÁ¤Áö¿ªÀÇ ½Ã°£ º° ±³Åë·®, °í¼Óµµ·Î ÈÞ°Ô¼ÒÀÇ ½Ã°£º° ¸ÅÃâ¾× µîÀÇ ½ÇÁ¦ µ¥ÀÌÅ͸¦ Àû¿ëÇÏ¿© º» ¿¬±¸ÀÇ LWR¿¡ ÀÇÇÑ °á°úµéÀÇ ¿¬°áµÈ ÆÐÅÏ°ú ´ÙÁßȸ±ÍºÐ¼®À» ÀÌ¿ëÇÑ ¿¹Ãø°á°ú¸¦ ºñ±³ÇÏ°í ÀÖ´Ù.
¿µ¹®³»¿ë
(English Abstract)
The LWR (Locally Weighted Regression) model, which is traditionally a lazy learning model, is designed to obtain the solution of the prediction according to the input variable, the query point, and it is a kind of the regression equation in the short interval obtained as a result of the learning that gives a higher weight value closer to the query point. We study on an incremental ensemble learning approach for LWR, a form of lazy learning and memory-based learning. The proposed incremental ensemble learning method of LWR is to sequentially generate and integrate LWR models over time using a genetic algorithm to obtain a solution of a specific query point. The weaknesses of existing LWR models are that multiple LWR models can be generated based on the indicator function and data sample selection, and the quality of the predictions can also vary depending on this model. However, no research has been conducted to solve the problem of selection or combination of multiple LWR models. In this study, after generating the initial LWR model according to the indicator function and the sample data set, we iterate evolution learning process to obtain the proper indicator function and assess the LWR models applied to the other sample data sets to overcome the data set bias. We adopt Eager learning method to generate and store LWR model gradually when data is generated for all sections. In order to obtain a prediction solution at a specific point in time, an LWR model is generated based on newly generated data within a predetermined interval and then combined with existing LWR models in a section using a genetic algorithm. The proposed method shows better results than the method of selecting multiple LWR models using the simple average method. The results of this study are compared with the predicted results using multiple regression analysis by applying the real data such as the amount of traffic per hour in a specific area and hourly sales of a resting place of the highway, etc.
Å°¿öµå(Keyword) ±¹¼Ò°¡Áßȸ±ÍºÐ¼®   ´ÙÁß ¸ðµ¨ÀÇ ¼±Åà  Á¡ÁøÀû ¾Ó»óºí ÇнÀ   À¯Àü¾Ë°í¸®Áò   Locally Weighted Regression   Multi Model Selection   Incremental Ensemble Learning   Genetic Algorithm  
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