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Çѱ¹¼öÀÚ¿øÇÐȸ / v.41, no.3, 2008³â, pp.341-351
Neuro-Fuzzy Ã߷бâ¹ýÀ» ÀÌ¿ëÇÑ È«¼ö ¿¹.°æº¸
( Flood Forecasting and Warning Using Neuro-Fuzzy Inference Technique )
ÀÌÀçÀÀ;ÃÖâ¿ø; ¾ÆÁÖ´ëÇб³ °ø°ú´ëÇÐ °Ç¼³±³Åë°øÇаú;¾ÆÁÖ´ëÇб³ ´ëÇпø °Ç¼³±³Åë°øÇаú;
 
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ÃÖ±Ù Áö±¸ ¿Â³­È­·Î ÀÎÇÑ ÀÌ»ó±âÈÄÀÇ ¿µÇâÀ¸·Î °Ô¸±¶ó¼º ÁýÁßÈ£¿ìÀÇ ÇÇÇØ°¡ Áõ°¡Çϰí ÀÖÀ¸¹Ç·Î ´ëÇÏõ»Ó¸¸ ¾Æ´Ï¶ó Áß ¼ÒÇÏõ¿¡¼­µµ È«¼ö ¿¹ °æº¸ÀÇ Á߿伺ÀÌ ³ô¾ÆÁö°í ÀÖ´Ù. ±âÁ¸ÀÇ È«¼ö ¿¹ °æº¸ ü°èÀÇ °æ¿ì À¯Ãâ·®À» °è»êÇÏ´Â Àü󸮰úÁ¤°ú ÁÖ °è»ê°úÁ¤À» °ÅÄ¡´Â µ¿¾È ¸¹Àº ¿ÀÂ÷µéÀÌ ¹ß»ýÇϰí, ´©ÀûµÇ¾î ±× °á°ú¹°(¿¹ÃøµÈ À¯Ãâ·®) ¼Ó¿¡ ¿ÀÂ÷µéÀÌ ³»Æ÷µÇ¾î ÀÖ´Ù. ¶ÇÇÑ À¯Ãâ¸ðÇüÀÇ Àû¿ë¿¡ ÇÊ¿äÇÑ ¸Å°³º¯¼öµéÀ» ÃßÁ¤Çϱâ À§Çؼ­µµ ¸¹Àº ½ÇÃøÀÚ·á°¡ ÇÊ¿äÇϰí, ¸¹Àº ºÒÈ®½Ç¼ºÀÌ ³»ÀçµÇ¾î ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ±âÁ¸ÀÇ È«¼ö ¿¹ °æº¸ ½Ã½ºÅÛÀÇ ¹®Á¦Á¡°ú ºÒÈ®½Ç¼ºÀ» ÃÖ´ëÇÑ °¨¼Ò½Ã۱â À§ÇØ ANFIS(Adaptive Neuro-Fuzzy Inference) ±â¹ýÀ» »ç¿ëÇÏ¿´´Ù. ANFIS´Â ½Å°æÈ¸·Î¸Á ±â¹ýÀ» »ç¿ëÇÑ data driven ¸ðÇüÀ¸·Î ±âÁ¸ÀÇ ¹°¸®Àû ¸ðÇüÀÇ ±¸Ãà°úÁ¤¿¡¼­ ÇʼöÀûÀ̾ú´ø ¹æ´ëÇÑ ¾çÀÇ ¹°¸®Àû ÀڷḦ ¹èÁ¦Çϰí À¯¿ªÀÇ °­¿ìÀÚ·á¿Í ¼öÀ§ÀڷḸÀ¸·Î ¸ðÇüÀ» ±¸ÃàÇÏ°í ¼öÀ§ ¿¹ÃøÀ» ½Ç½ÃÇÒ ¼ö ÀÖ´Ù. ÀÔ·ÂÀÚ·á·Î´Â ½Ã°è¿­ °­¿ìÀÚ·á¿Í ¼öÀ§ÀڷḦ »ç¿ëÇÏ¿´°í, ¸ðÇüÀ» ÅëÇÏ¿© t+1, t+2, t+3 ½Ã°£ ÈÄÀÇ ¼öÀ§¸¦ ¿¹ÃøÇÏ¿´´Ù. źõÀ¯¿ªÀÇ 2003³âºÎÅÍ 2005³â±îÁöÀÇ °­¿ì»ç»óÀ» ÀÌ¿ëÇÏ¿© ¸ðÇüÀÇ Àû¿ë¼º°ú Ÿ´ç¼ºÀ» °ËÅäÇÏ¿´°í, 2006³â ½ÇÁ¦ °­¿ì¿¡ ¸ðÇüÀ» Àû¿ëÇÑ °á°ú ½ÇÁ¦ ¼öÀ§¸¦ Å« ¿ÀÂ÷ ¾øÀÌ ¸ðÀÇÇÒ ¼ö ÀÖ¾ú´Ù.
Since the damage from the torrential rain increases recently due to climate change and global warming, the significance of flood forecasting and warning becomes important in medium and small streams as well as large river. Through the preprocess and main processes for estimating runoff, diverse errors occur and are accumulated, so that the outcome contains the errors in the existing flood forecasting and warning method. And estimating the parameters needed for runoff models requires a lot of data and the processes contain various uncertainty. In order to overcome the difficulties of the existing flood forecasting and warning system and the uncertainty problem, ANFIS(Adaptive Neuro-Fuzzy Inference System) technique has been presented in this study. ANFIS, a data driven model using the fuzzy inference theory with neural network, can forecast stream level only by using the precipitation and stream level data in catchment without using a lot of physical data that are necessary in existing physical model. Time series data for precipitation and stream level are used as input, and stream levels for t+1, t+2, and t+3 are forecasted with this model. The applicability and the appropriateness of the model is examined by actual rainfall and stream level data from 2003 to 2005 in the Tancheon catchment area. The results of applying ANFIS to the Tancheon catchment area for the actual data show that the stream level can be simulated without large error.
 
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½Å°æÈ¸·Î¸Á;data driven ¸ðÇü;È«¼ö¿¹º¸;ANFIS;neural network;data driven model;flood forecasting;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.41, no.3, 2008³â, pp.341-351
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200814256113808)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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