Techno LPPM
Vol 7, No 2 (2021)

MULTI CRITERION PRIORITY ON KRIGING OF GOLD RESOURCES PREDICTION

Nur Ali Amri (Universitas Pembangunan Nasional Veteran Yogyakarta)
Waterman Sulistyana Bargawa (Universitas Pembangunan Nasional Veteran Yogyakarta)
Tedy Agung Cahyadi (Universitas Pembangunan Nasional Veteran Yogyakarta)



Article Info

Publish Date
14 Dec 2021

Abstract

This paper describes of three things. First, the Kriging estimation on gold grade which is distributed in the vein. The empirical variogram method based on Matheron classical and robust of Cressie-Hawkins. The two empirical fitting on variogram theory of spherical and exponential equations of weighted least squares and ordinary least squares used. The predictions of six sizes block-Kriging respectively, 15×15, 25×25, 35×35, 50×50, 75×75 and 100×100 based on four variographic models. Second, determine the priority of 24 prediction combinations based on TOPSIS method. Finally, the multiple criterion decision making method namely, 15×15 block Kriging based on a robust empirical variogram of exponential weighted least squares model represents as the best result.

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