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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.6, 2001³â, pp.701-711
½Å°æ¸Á ¸ðÇüÀ» Àû¿ëÇÑ ±Ý°­ °øÁÖÁöÁ¡ÀÇ ¼öÁú¿¹Ãø
( Water Quality Forecasting at Gongju station in Geum River using Neural Network Model )
¾È»óÁø;¿¬Àμº;ÇѾç¼ö;ÀÌÀç°æ; ÃæºÏ´ëÇб³ Åä¸ñ°øÇаú;ÃæºÏ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;°æµ¿´ëÇб³ Åä¸ñ°øÇаú;´ë¿ø°úÇдëÇÐ Åä¸ñ°øÇаú;
 
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¼öÁú ÀÎÀÚµéÀº ´Ù¾çÇÏ°í °ü°è°¡ º¹ÀâÇÏ¿© ¼öÁú º¯È­¸¦ ¿¹ÃøÇϴµ¥ ¸¹Àº ¾î·Á¿òÀÌ ÀÖ´Ù. µû¶ó¼­ ÀԷ°ú Ãâ·ÂÀÌ ºñ±³Àû ¿ëÀÌÇÏ°í ºñ¼±Çü ¿¹Ãø¿¡ ÀûÇÕÇÑ ½Å°æ¸Á ¸ðÇüÀ» ÀÌ¿ëÇÏ¿© ±Ý°­À¯¿ª °øÁÖÁöÁ¡ÀÇ DO, BOD, TN¿¡ ´ëÇÑ ¿ù¼öÁú ¿¹ÃøÀ» ¼öÇàÇϰí ARIMA ¸ðÇü°ú ºñ±³ÇÏ¿© Àû¿ë °¡´É¼ºÀ» °ËÅäÇÏ¿´´Ù. »ç¿ëµÈ ½Å°æ¸Á ¸ðÇüÀº ÇнÀÀ» À§ÇØ BP(Back Propagation) ¾Ë°í¸®ÁòÀ» Àû¿ëÇÏ¿´À¸¸ç ÇнÀÀ» Çâ»ó½Ã۱â À§ÇÑ ¸ð¸àÆ®-ÀûÀÀÇнÀÀ²(Moment-Adaptive learming rate) ¹æ¹ýÀ» ÀÌ¿ëÇÑ MANN ¸ðÇü, ·¹¹ø¹ö±×-¸¶ÄõÆ®(Levenberg-Marquardt) ¹æ¹ýÀ» ÀÌ ¿ëÇÑ LMNN ¸ðÇü, ±×¸®°í Á¤¼ºÀûÀÎ ÆÇ´ÜÀÎÀÚ¸¦ ÷°¡ÇÏ¿© Á¤·®ÀûÀÎ ¿ù ¼öÁú ÀÚ·á¿Í ºÐº°, ÇнÀÇÏ µµ·Ï Àº´ÐÃþÀ» ºÐ¸®ÇÑ MNN ¸ðÇüÀ¸·Î ±¸ºÐÇÏ¿´´Ù. ´ëü·Î ½Å°æ¸Á ¸ðÇüÀÇ ¿¹ÃøÄ¡°¡ ½ÇÃøÄ¡¿¡ ±Ù»çÇÑ °á°ú¸¦ º¸¿´À¸¸ç, Àº´ÐÃþÀ» ºÐ¸®ÇÑ MNN ¸ðÇüÀÌ °¡Àå ¿ì¼öÇÑ °á°ú¸¦ º¸¿´´Ù.
Forecasting of water quality variation is not an easy process due to the complicated nature of various water quality factors and their interrelationships. The objective of this study is to test the applicability of neural network models to the forecasting of the water quality at Gongju station in Geum River. This is done by forecasting monthly water qualities such as DO, BOD, and TN, and comparing with those obtained by ARIMA model. The neural network models of this study use BP(Back Propagation) algorithm for training. In order to improve the performance of the training, the models are tested in three different styles ; MANN model which uses the Moment-Adaptive learning rate method, LMNN model which uses the Levenberg-Marquardt method, and MNN model which separates the hidden layers for judgement factors from the hidden layers for water quality data. the results show that the forecasted water qualities are reasonably close to the observed data. And the MNN model shows the best results among the three models tested
 
Ű¿öµå
½Å°æ¸Á;¼öÁú;¿¹Ãø;Neural Network;Water Quality;Forecasting;ARIMA (Autoregressive Intergrated Moving Average);LMNN(Levenberg-Marquardt Neural Network);MAMM(Moment-Adaptive learning rate Neural Netwrok);MNN(Modular Neural Network);ARIMA;LMNN;MANN;MNN;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.6, 2001³â, pp.701-711
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920877942)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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