Hybrid Models Performance Assessment to Predict Flow of Gamasyab River
Journal Title: International journal of Advanced Biological and Biomedical Research - Year 2014, Vol 2, Issue 5
Abstract
Awareness of the level of river flow and its fluctuations at different times is one of the significant factor to achieve sustainable development for water resource issues. Therefore, the present study two hybrid models, Wavelet- Adaptive Neural Fuzzy Interference System (WANFIS) and Wavelet- Artificial Neural Network (WANN) are used for flow prediction of Gamasyab River (Nahavand, Hamedan, Iran). For this purpose, original time series using wavelet theory decomposed to multi time sub-signals, then these decomposed sub-signals as in input data are used in Adaptive Neural Fuzzy Interference System (ANFIS) and Artificial Neural Network (ANN) for monthly flow prediction. The obtained result shows that WANFIS model has better performance than WANN and can be used for short term and long term flow prediction. One of the weaknesses of fuzzy models is the model estimation error in minimum and maximum points. Which this problem can solve by using hybrid models of wavelet - fuzzy inference system.Also based on results of hybrid model of wavelet- network, it can be concluded that to achieve accurate estimation of the number of different intermediate layers are examined and using one intermediate layer in all conditions is not enough to achieve the best results. Generally, hybrid model of wavelet - Adaptive Neural Fuzzy Interference System have better performance in estimation of the extent points and it is better method for prediction of Gamasyab River flow.
Authors and Affiliations
Abazar Solgi| MSc Student, Faculty of Water Sciences, Shahid Chamran University of Ahvaz, Iran, Feridon Radmanesh| Assistant Professor, Faculty of Water Sciences, Shahid Chamran University of Ahvaz, Iran, Heidar Zarei| Assistant Professor, Faculty of Water Sciences, Shahid Chamran University of Ahvaz, Iran, Vahid Nourani| Associate professor, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran
Keywords
Related Articles
- EP ID EP13263
- DOI -
- Views 344
- Downloads 12
Evaluating the Efficiency of Trichogramma Pintoii and Bacillus Thuringiensis Var. Kurstaki on Corn Stem Borer, Ostrinia Nubilalis (Lepidoptera:Pyralidae) in Corn Fields of Moghan Plain
Objective: In this study the efficacy of two agent of this biological control agent of corn stem borer in corn fields compared with common synthetic insecticides Endosolfan to find a suitable alternative for chemical c...
Application of Gis and Gps in Precision Agriculture (a Review)
Agriculture is a complex system science and the knowledge of it is consisting of much concepts and relationships. Examinations in connection with site-specific farming have been carried out by our institute since 1998....
Management ecosystem by Assessment of plant covers changes (Case study: Taleghan Township)
For an optimum use of natural resources in the sustainable development trend, there is a need to identify ecological resources in the shortest period of time and minimum possible cost. In this article, we aimed Managem...
Effect of H2SO4 on Seed Germination and Viability of Canna indica L. Ornamental Plant
Canna indica L. roots are used for medicinal purpose. A decoction of the root with fermented rice is used in the treatment of gonorrhea and amenorrhea. The seed of canna is extremely hard, and needs to be "scarified" b...
Evaluation of Pinus eldarica hazardous criterias in the Babol city (Mazandaran province, northern state of Iran)
Any defects in street trees may cause injuries to human, vehicles and buildings. This research was investigated in the Babol city, Mazandaran province, in the northern state of Iran.Used the perfect inventory methods a...