PREDICTION OF MAXIMUM SCOUR DEPTH DOWNSTREAM OF BED SILLS USING SUPPORT VECTOR MACHINES

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ZAHIRI A.; GHORBANI KH.

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Journal: Journal of Water and Soil Conservation Year:2013 | Volume:20 | Issue:6 Page(s): 107-125

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Title

PREDICTION OF MAXIMUM SCOUR DEPTH DOWNSTREAM OF BED SILLS USING SUPPORT VECTOR MACHINES

Author(s)

ZAHIRI A. | GHORBANI KH. | Issue Writer Certificate

Keywords

MAXIMUM SCOUR DEPTHQ2

BED SILLSQ2

REGRESSION EQUATIONSQ2

SUPPORT VECTOR MACHINESQ2

Abstract

Hydraulic grade-control structures (e.g. drops, BED SILLS, check dams, etc.) have been widely used in rivers with low stability and high erosion especially in mountain streams. For proper and safe design, prediction of MAXIMUM SCOUR DEPTH downstream of grade-control structures in rivers has vital importance. For this reason, researchers have focused on developing simple and accurate empirical equations in form of non-linear regression models for predicting scour depth.However, accuracy of regression models is limited in general and they have good applicability just for their experimental data. In this paper, SUPPORT VECTOR MACHINES (SVM), in forecasting the scour depth downstream BED SILLS is applied.226 experimental data sets from literatures with different hydraulic and sediment conditions and at clear-water scouring have been used. Comparison of results in testing phase showed that outcome from the SUPPORT VECTOR MACHINES with coefficient of determination of 0.96, root mean square errors of 0.539 and mean absolute errors of 0.4 suggest a better performance to existing regression compared equations. Also, it is found that from 5 effective input dimensionless parameters including a/Hs, D50/Hs,, S0. a/DD50 and L/Hs, only the first three parameters had greater effects on modeling MAXIMUM SCOUR DEPTH at BED SILLS and the remaining may be omitted.

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APA: Copy

ZAHIRI, A., & GHORBANI, KH.. (2013). PREDICTION OF MAXIMUM SCOUR DEPTH DOWNSTREAM OF BED SILLS USING SUPPORT VECTOR MACHINES. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 20(6), 107-125. SID. https://sid.ir/paper/156129/en

Vancouver: Copy

ZAHIRI A., GHORBANI KH.. PREDICTION OF MAXIMUM SCOUR DEPTH DOWNSTREAM OF BED SILLS USING SUPPORT VECTOR MACHINES. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2013;20(6):107-125. Available from: https://sid.ir/paper/156129/en

IEEE: Copy

A. ZAHIRI, and KH. GHORBANI, “PREDICTION OF MAXIMUM SCOUR DEPTH DOWNSTREAM OF BED SILLS USING SUPPORT VECTOR MACHINES,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 20, no. 6, pp. 107–125, 2013, [Online]. Available: https://sid.ir/paper/156129/en

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