R. Dimitrakopoulos

Publications264
h-index38
Citations4,385
Highly Influential Citations206
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Stochastic optimization for strategic mine planning: A decade of developments
Conventional approaches to estimating reserves, optimizing mine planning, and production forecasting result in single, and often biased, forecasts. This is largely due to the non-linear propagation… Expand
  • 101
  • 11
Stochastic mine design optimisation based on simulated annealing: pit limits, production schedules, multiple orebody scenarios and sensitivity analysis
Abstract Over recent years, new methods have been developed to integrate uncertainty into the optimisation of life-of-mine production planning. One of these methods is based on scheduling with a… Expand
  • 59
  • 11
Geostatistical Simulation of Regionalized Pore-Size Distributions Using Min/Max Autocorrelation Factors
In many fields of the Earth Sciences, one is interested in the distribution of particle or void sizes within samples. Like many other geological attributes, size distributions exhibit spatial… Expand
  • 118
  • 10
Conditional simulation algorithms for modelling orebody uncertainty in open pit optimisation
TLDR
Conditional simulation is a class of Monte Carlo techniques that can be used to generate equally probable representations of in-situ orebody variability and the resulting effects on various aspects of open pit design and planning. Expand
  • 90
  • 10
High-order Statistics of Spatial Random Fields: Exploring Spatial Cumulants for Modeling Complex Non-Gaussian and Non-linear Phenomena
TLDR
A non-linear and non-Gaussian high-order geostatistics based on spatial connectivity measures, namely spatial cumulants, are proposed as a new alternative modeling framework for spatial data. Expand
  • 116
  • 6
A diversified Tabu search approach for the open-pit mine production scheduling problem with metal uncertainty
TLDR
This paper presents a metaheuristic solution approach based on Tabu search for the open-pit mine production scheduling problem with metal uncertainty. Expand
  • 129
  • 6
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Moving forward from traditional optimization: grade uncertainty and risk effects in open-pit design
Abstract An economic argument is presented for the incorporation of quantitative modelling of the uncertainty of grade, tonnage and geology into open-pit design and planning. Two new implementations… Expand
  • 164
  • 6
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Optimizing mining complexes with multiple processing and transportation alternatives: An uncertainty-based approach
TLDR
This paper presents a method to generate mining, processing and transportation schedules that account for the previously mentioned activities (or stages) associated with the mining complex simultaneously. Expand
  • 76
  • 6
  • PDF
A new approach for geological pattern recognition using high-order spatial cumulants
TLDR
This paper presents HOSC or High-order spatial cumulants, an algorithm for calculating spatial cumullants, including anisotropic experimental cumulant based on spatial templates. Expand
  • 46
  • 6
  • PDF
Stochastic integer programming for optimising long term production schedules of open pit mines: methods, application and value of stochastic solutions
Abstract The production scheduling of open pit mines is an intricate, complex and difficult problem to address due to its large scale and the unavailability of a truly optimal net present value (NPV)… Expand
  • 68
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