Roussos Dimitrakopoulos
BackCahiers du GERAD
91 results — page 1 of 5
Decoupling spatial pattern and its movement via complex factorization over orthogonal filter pairs
Variations between related images (e.g. due to motions) can caused by different independent factors. A qualified representation can decouple the underlying...
BibTeX reference
Short-term production planning in mining complexes involves a series of decisions concerning activities and processes to accomplish the long-term planning ...
BibTeX referenceA simultaneous stochastic optimization framework for selecting additional infill drilling locations
An innovative simultaneous stochastic optimization approach is proposed that combines actor-critic reinforcement learning and stochastic mathematical progr...
BibTeX referenceLearning to schedule heuristics for the simultaneous stochastic optimization of mining complexes
The simultaneous stochastic optimization of mining complexes (SSOMC) is a large-scale stochastic combinatorial optimization problem that simultaneously manag...
BibTeX referenceAdaptive simultaneous stochastic optimization of mining complexes: Where is the value coming from?
This paper aims to identify the sources of value created in the strategic plan of a mining complex when the adaptive simultaneous stochastic optimization of ...
BibTeX referenceStochastic stope design optimization under grade uncertainty and dynamic development costs
Stope design optimization defines mineable three-dimensional material volumes to be extracted from a mineral deposit, aiming to maximize cashflows subject ...
BibTeX reference
The geometallurgical models that predicting the throughput/comminution performance of the a processing plant often rely on rock hardness models, which are ba...
BibTeX reference
A new linear model is presented herein to optimize strategic production scheduling of an open pit mine with multiple processing streams while accounting for...
BibTeX reference
Geostatistically simulated representations of mineral deposits are used for resource/reserve assessments, mine design and production planning, project evalua...
BibTeX reference
Industrial mining complexes can be optimized using simultaneous stochastic optimization (SSO), which manages the risks associated with meeting production tar...
BibTeX reference
This paper presents a new truck dispatching policy approach that is adaptive given different mining complex configurations in order to deliver supply materia...
BibTeX referenceTraining image free high-order stochastic simulation based on aggregated kernel statistics
A training-image free, high-order sequential simulation method is proposed herein, which is based on the efficient inference of high-order spatial statistics...
BibTeX reference
This article presents a novel stochastic optimization model that simultaneously optimizes the short-term extraction sequence, shovel relocation, scheduling o...
BibTeX reference
An innovative strategic mine planning approach is applied to a multi-mine and multi-process gold mining complex that simultaneously considers feasible capita...
BibTeX reference
Mineral value chains or mining complexes involve mining, processing, stockpiling, waste management, and transportation activities. An integrated stochastic...
BibTeX reference
With sufficient layers, enough training data, enough time, and often a custom tailored architecture, modern deep learning methods can be extremely successf...
BibTeX reference
A new mathematical model for stochastic short-term optimization of mining complexes is presented that simultaneously optimizes the short-term extraction sequ...
BibTeX reference
This paper presents the application of adaptive simultaneous stochastic optimization with a representative branching framework to generate the strategic pl...
BibTeX reference
The open-pit mine production scheduling problem aims to optimize the net present value of a mining asset. Several solution methods have been proposed to find...
BibTeX referenceA new computational model of high-order stochastic simulation based on spatial Legendre moments
Multiple-point simulations have been introduced over the past decade to overcome the limitations of second-order stochastic simulations in dealing with geolo...
BibTeX reference