23 citations · 76 across the 9 of their papers we have counts for
9 papers
Effective information gathering for ore estimation, evaluation and perspectives on adaptive sampling
Raymond Leung, Arman Melkumyan
A computational/analytics framework for assessing the value of drill-hole information in ore grade estimation is described using Gaussian Process and statistics. A distinguishing f…
IntegralGP: Volumetric estimation of subterranean geochemical properties in mineral deposits by fusing assay data with different spatial supports
Anna Chlingaryan, Arman Melkumyan, Raymond Leung
This article presents an Integral Gaussian Process (IntegralGP) framework for volumetric estimation of subterranean properties in mineral deposits. It provides a unified representa…
Unsupervised ore/waste classification on open-cut mine faces using close-range hyperspectral data
Lloyd Windrim, Arman Melkumyan, Richard J. Murphy +2
The remote mapping of minerals and discrimination of ore and waste on surfaces are important tasks for geological applications such as those in mining. Such tasks have become possi…
Automation and AI Technology in Surface Mining With a Brief Introduction to Open-Pit Operations in the Pilbara
Raymond Leung, Andrew J Hill, Arman Melkumyan
This survey article provides a synopsis on some of the engineering problems, technological innovations, robotic development and automation efforts encountered in the mining industr…
Empirical observations on the effects of data transformation in machine learning classification of geological domains
Raymond Leung
In the literature, a large body of work advocates the use of log-ratio transformation for multivariate statistical analysis of compositional data. In contrast, few studies have loo…
Surface Warping Incorporating Machine Learning Assisted Domain Likelihood Estimation: A New Paradigm in Mine Geology Modelling and Automation
Raymond Leung, Mehala Balamurali, Alexander Lowe
This paper illustrates an application of machine learning (ML) within a complex system that performs grade estimation. In surface mining, assay measurements taken from production d…
Subsurface Boundary Geometry Modeling: Applying Computational Physics, Computer Vision and Signal Processing Techniques to Geoscience
Raymond Leung
This paper describes an interdisciplinary approach to geometry modeling of geospatial boundaries. The objective is to extract surfaces from irregular spatial patterns using differe…
Bayesian Surface Warping Approach For Rectifying Geological Boundaries Using Displacement Likelihood And Evidence From Geochemical Assays
Raymond Leung, Alexander Lowe, Anna Chlingaryan +2
This paper presents a Bayesian framework for manipulating mesh surfaces with the aim of improving the positional integrity of the geological boundaries that they seek to represent.…
Modelling Orebody Structures: Block Merging Algorithms and Block Model Spatial Restructuring Strategies Given Mesh Surfaces of Geological Boundaries
Raymond Leung
This paper describes a framework for capturing geological structures in a 3D block model and improving its spatial fidelity given new mesh surfaces. Using surfaces that represent g…