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Zamir Libohova Author
Subjects of specialization
Affiliation
product development
USDA-NRCS (National Soil Survey Center), 100 Centennial Mall N., Rm. 152, Lincoln, NE 68508, USA
Biography
Zamir Libohova, USDA-NRCS (National Soil Survey Center), In soil survey there is no pedotransfer function available to estimate sum-of-bases (SBs) for the range of soils that occur in the United States. The objectives of this study were to develop an SBs model using the k-nearest neighbor 100 Centennial Mall N., Rm. 152, Lincoln, NE 68508, USA
Publications
Research Article Open Access
Soil Survey: Prediction of Sum of Bases Using K-Nearest Neighbor Approach
Author(s): Cathy A Seybold*, Moustafa Elrashidi and Zamir Libohova
In soil survey there is no pedotransfer function available to estimate sum-of-bases (SBs) for the range of soils that occur in the United States. The objectives of this study were to develop a SBs model using the k-nearest neighbor (k-NN) approach and validate this model against an independent dataset. The nearest-neighbor approach passively stores the development (or reference) dataset until the time of application, and then the dataset is searched for the 10 (k) most similar soils to that of the target soil, based on selected attributes (i.e., OC, cation exchange, pH, extractable acidity). The reference dataset was developed from the National Cooperative Soil Survey characterization database in Lincoln, Nebraska. Taxonomic order is used as strata within th... view more»
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