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1.025
Q1(Year 2015)
ISSN : 1026-3098
e-ISSN : 2345-3605
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Publication Information : Volume 22 - Number 2
Type : Research Note
Topics of Paper : Transaction on Civil Engineering
English Title : Daily Discharge Forecasting Using Least Square Support Vector Regression and Regression Tree
English Abstract : Prediction of river flow is one of the main issues in the field of water resources management. Because of the complexity of the rainfall-runoff process, data-driven methods have gained increased importance. In the current study, two newly developed models called Least Square Support Vector Regression (LSSVR) and Regression Tree (RT) are used. The LSSVR model is based on the constrained optimization method and applies structural risk minimization in order to yield a general optimized result. Also in the RT, data movement is based on laws discovered in the tree. Both models have been applied to the data in the Kashkan watershed. Variables include (a) recorded precipitation values in the Kashkan watershed stations, and (b) outlet discharge values of one and two previous days. Present discharge is considered as output of the two models. Following that, a sensitivity analysis has been carried out on the input features and less important features has been diminished so that both models have provided better prediction on the data. The final results of both models have been compared. It was found that the LSSVR model has better performance. Finally, the results present these models as a suitable models in river flow forecasting.
English Keywords : Streamflow forecast; artificial intelligence; support vector regression (SVR); Regression tree (RT); Kashkan watershed.
Refrences :
Number Of Pages :
From 410 to 422


Authors :
The AuthorAuthor SequenceOrganizationOrganization ( english )AffiliationEmailEducation
Sh. Sahraei
(Author)
1Civil and Environmental Engineering Department, School of Engineering, Shiraz University, Shiraz, Iran    
S. Zare Andalani 2School of Civil Engineering, College of Engineering, Tehran University, Tehran, Iran  saeed.zare@ut.ac.ir 
Dr. M. Zakermoshfegh 3Civil Engineering Department, Director of Research and Technology Affairs, Jundi-Shapur University of Technology, Dezful, Iran  moshfegh@jsu.ac.ir 
B. Nikeghbal Sisakht 4Civil and Environmental Engineering Department, School of Engineering, Shiraz University, Shiraz, Iran  Babaknikeghbal@yahoo.com 
Prof. N. Talebbeydokhti 5Civil and Environmental Engineering Department, Environmental Research and Sustainable Development Center, Shiraz University, Shiraz, Iran Professortaleb@shirazu.ac.ir 
Dr. H. Moradkhani 6Civil and Environmental Engineering Department, Portland State University, Portland, OR., USA Associate Professorhamidm@cecs.pdx.edu 
Published Issues
2017
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
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Transactions on Industrial Engineering
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2016
2015
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
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Transactions on Nanotechnology
2014
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology
2013
Transactions on Civil Engineering
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Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology

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