BARGAWA, Waterman Sulistyana and PURNOMO, HENDRO Performance Evaluation of Ordinary Kriging and Inverse Distance Weighting Methods for Nickel Laterite Resources Estimation. Performance Evaluation of Ordinary Kriging and Inverse Distance Weighting Method for Nickel Laterite Resources Estimation, 49 (1). pp. 121-134. ISSN 0024-9521
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Performance Evaluation of Ordinary Kriging and Inverse Distance Weighting Methods for Nickel Laterite Resources Estimation.pdf Download (734kB) | Preview |
Abstract
The choice of an accurate interpolation technique for predicting nickel grade and other elements in unsampled location is an important issue in mineral resources estimations. The use of kriging variance on geostatistics method for measuring of confidence level is difficultto apply directly. This study introduces the use of RMSE (root mean square error) in the selection of the best variogram model related to the accuracy of the estimation performance. In this study, use OK (ordinary kriging) and IDW (inverse distance weighting) techniques for nickel laterite resource estimation. Result indicates at low CV values, OK model is relatively more accurate than IDW that is shown by a low RMSE value.Correlation between skewness and IDW techniques indicates that data with low skewness (<1)IDW with a power of1 is better thanother power value and data with high skewness (>2.5) a power of 2 yielded the most accurate estimates
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Dr.Ir.MT WATERMAN BARGAWAN SULISTYANA |
| Date Deposited: | 28 Sep 2017 06:56 |
| Last Modified: | 28 Sep 2017 06:56 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/13015 |
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