When applied to precipitation forecasting, the mean generating function - optimal subset regression (MGF-OSR) model is limited by its low accuracy and high error, while the back propagation (BP) neural network model has difficulty in learning for matrix selection. This paper proposes a new MGF-OSR-BP model, which uses a MGF to extend original data, an OSR to select the best series as the BP neural network input node and learning matrix, and the resultant data for training. The training procedure determines the number of hidden layers and uses an optimal number of hidden layers for model training. This paper uses the MGF-OSR-BP model to analyze precipitation data from Hangzhou, China, for 53 years, from 1956 to 2008. The 1956-2006 precipitation data are used as the training sample, and the 2007-2008 data are used as the test set data to verify the practicality of the forecast system. A fitting verification is performed using the forecasted data against field measurement data, and the results show that the forecast accuracy is better than that of the MGF-OSR model or the MGF stepwise multiple regression model.
목차
Abstract 1. Introduction 2. Data and Methods 2.1 Data Selection 2.2 MGF Extension 2.3 MGF Stepwise Multiple Regression Equation 2.4 Establishment of an OSR Forecast Equation 2.5 BP Neural Network 3. Fitting and Forecast Result Analysis 4. Conclusions References
키워드
precipitation forecastneural network (NN)mean generating function (MGF)optimal subset regression (OSR)
저자
Li Ma [ Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science & Technology, School of Computer & Software, Nanjing University of Information Science & Technology, Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology ]
Xuelian Li [ Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science & Technology, School of Computer & Software, Nanjing University of Information Science & Technology ]
Jin Wang [ Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science & Technology, School of Computer & Software, Nanjing University of Information Science & Technology ]
보안공학연구지원센터(IJUNESST) [Science & Engineering Research Support Center, Republic of Korea(IJUNESST)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of u- and e- Service, Science and Technology
간기
격월간
pISSN
2005-4246
수록기간
2008~2016
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of u- and e- Service, Science and Technology Vol.5 No.4