A NONPARAMETRIC MODEL BY USING K-NEAREST NEIGHBOR TECHNIQUE FOR PREDICTING SOIL SATURATED HYDRAULIC CONDUCTIVITY

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JALALI V.R.; HOMAEE M.

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Journal: Journal of Water and Soil Year:2011 | Volume:25 | Issue:2 Page(s): 347-355

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Title

A NONPARAMETRIC MODEL BY USING K-NEAREST NEIGHBOR TECHNIQUE FOR PREDICTING SOIL SATURATED HYDRAULIC CONDUCTIVITY

Author(s)

JALALI V.R. | HOMAEE M. | Issue Writer Certificate

Keywords

K-NEAREST NEIGHBOR (K-NN)Q2

MODELINGQ2

SATURATED HYDRAULIC CONDUCTIVITYQ2

Abstract

Saturated hydraulic conductivity (Ks) is needed for many studies related to water and solute transport, but often cannot be measured because of practical and/or cost-related reasons. Nonparametric approaches are being used in various fields to estimate continuous variables. One type of the nonparametric lazy learning algorithms, a k-nearest neighbor (k-NN) algorithm, was introduced and tested to estimate SATURATED HYDRAULIC CONDUCTIVITY (Ks) from other soil properties including soil textural fractions, EC, pH, SP, OC, TNV, rs and rb. A number of 10 nearest neighbors, based on Cross Validation technique were selected to perform SATURATED HYDRAULIC CONDUCTIVITY prediction from 151 soil sample attributes. The nonparametric k-NN technique performed mostly equally well, in terms of Pearson correlation coefficient (r=0.801), MODELING efficiency (EF=0.65), root-meansquared errors (RMSE=71.15) maximum error (ME=120.47), coefficient of determination (CD=1.32) and coefficient of residual mass (CRM=-0.046) statistics. It can be concluded that the k-NN technique is a competitive alternative to other techniques such as pedotransfer functions (PTFs) to estimate SATURATED HYDRAULIC CONDUCTIVITY.

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APA: Copy

JALALI, V.R., & HOMAEE, M.. (2011). A NONPARAMETRIC MODEL BY USING K-NEAREST NEIGHBOR TECHNIQUE FOR PREDICTING SOIL SATURATED HYDRAULIC CONDUCTIVITY. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 25(2), 347-355. SID. https://sid.ir/paper/141730/en

Vancouver: Copy

JALALI V.R., HOMAEE M.. A NONPARAMETRIC MODEL BY USING K-NEAREST NEIGHBOR TECHNIQUE FOR PREDICTING SOIL SATURATED HYDRAULIC CONDUCTIVITY. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2011;25(2):347-355. Available from: https://sid.ir/paper/141730/en

IEEE: Copy

V.R. JALALI, and M. HOMAEE, “A NONPARAMETRIC MODEL BY USING K-NEAREST NEIGHBOR TECHNIQUE FOR PREDICTING SOIL SATURATED HYDRAULIC CONDUCTIVITY,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 25, no. 2, pp. 347–355, 2011, [Online]. Available: https://sid.ir/paper/141730/en

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