Cahiers : GERAD

Dec 2019

A new matheuristic approach for optimizing mineral value chains under uncertainty

Amina Lamghari and Roussos Dimitrakopoulos

G-2019-93

Dec 2019

Improving classification performance on sparse data: Augmenting a convolutional neural net with generalized angular orientations of edges

Amir Abbas Haji Abolhassani, Roussos Dimitrakopoulos, Frank P. Ferrie, and Prasun Lala

G-2019-98

Dec 2019

Stochastic short-term production scheduling and shovel allocation for mining complexes including stockpiling and operational alternatives

Christian Both and Roussos Dimitrakopoulos

G-2019-97

Dec 2019

Adaptive two-stage stochastic optimization of the Escondida mining complex, Chile

Maria Fernanda Del Castillo and Roussos Dimitrakopoulos

G-2019-89

Jan 2019

Solving the mixed-integer linear programming problem for mine production scheduling with stockpiling under multi-element geological uncertainty

Zeyneb Brika, Michel Gamache, and Roussos Dimitrakopoulos

G-2019-05

Oct 2018

A new computational model of high-order stochastic simulation based on spatial Legendre moments

Lingqing Yao, Roussos Dimitrakopoulos, and Michel Gamache

G-2018-89

Oct 2018

A new non-stationary high-order spatial sequential simulation method

Amir Abbas Haji Abolhassani, Roussos Dimitrakopoulos, and Frank P. Ferrie

G-2018-88

Oct 2018

A dynamic stochastic approach for open-pit mine planning

Adrien Rimélé, Roussos Dimitrakopoulos, and Michel Gamache

G-2018-87

Oct 2018

Simultaneous stochastic optimization of an open pit gold mining complex with supply and market uncertainty

Ziad Saliba and Roussos Dimitrakopoulos

G-2018-86

Oct 2018

High-order block support spatial simulation and application at a gold deposit

João Pedro De Carvalho, Roussos Dimitrakopoulos, and Ilnur Minniakhmetov

G-2018-85

Oct 2018

Stochastic optimization of mining complexes integrating capital investments and operational alternatives

Maria Fernanda Del Castillo and Roussos Dimitrakopoulos

G-2018-84

Oct 2018

Updating short-term destination policies with new information in a mining complex: A fast mechanism using machine learning

Ashish Kumar, Roussos Dimitrakopoulos, and Marco Maulen

G-2018-82

Oct 2018

Hyper-heuristic approaches for strategic mine planning under uncertainty

Amina Lamghari and Roussos Dimitrakopoulos

G-2018-81

Sep 2018

Multi-product mine scheduling optimization under multi-element geological uncertainty

Zeyneb Brika, Michel Gamache, and Roussos Dimitrakopoulos

G-2018-72

Nov 2017

Mine planning and oil field development: A survey and research potentials

Amina Lamghari and Roussos Dimitrakopoulos

G-2017-95

Nov 2017

Stochastic optimization of long-term block cave scheduling with hang-up and grade uncertainty

Rein Dirkx, Vassilios Kazakidis, and Roussos Dimitrakopoulos

G-2017-94

Nov 2017

Expanding simultaneous stochastic optimization of mining complexes to introduce geometallurgical constraints: Application at the Escondida mining complex, Chile

Ashish Kumar and Roussos Dimitrakopoulos

G-2017-91

Nov 2017

Stochastic orebody modelling and stochastic long-term production scheduling for an iron ore deposit

Maria Natalia Vallejo and Roussos Dimitrakopoulos

G-2017-93

Nov 2017

Simultaneous stochastic optimization of production scheduling at Twin Creeks mining complex, Nevada

Luis Montiel and Roussos Dimitrakopoulos

G-2017-92

Nov 2017

Incorporating geological and equipment performance uncertainty while optimizing short-term mine production schedules

Matthew Quigley and Roussos Dimitrakopoulos

G-2017-89

Nov 2017

A high-order, data-driven framework for joint simulation of categorical variables

Ilnur Minniakhmetov and Roussos Dimitrakopoulos

G-2017-88

Nov 2017

Responding to new information in a mining complex: Fast mechanisms using machine learning

Cosmin Paduraru and Roussos Dimitrakopoulos

G-2017-87

Nov 2017

Stochastic mining supply chain optimization: A study of integrated capacity decisions

Iain Farmer and Roussos Dimitrakopoulos

G-2017-86

Sep 2017

Dynamic mid-term optimization of a mining complex under uncertainty

Maria Fernanda Del Castillo and Roussos Dimitrakopoulos

G-2017-79

May 2017

Open pit stochastic optimization with in-pit tailings storage

Adrien Rimélé, Michel Gamache, and Roussos Dimitrakopoulos

G-2017-35

May 2017

Heuristic method for the stochastic open pit mine production scheduling problem

Adrien Rimélé, Michel Gamache, and Roussos Dimitrakopoulos

G-2017-34

Nov 2016

Testing geological heterogeneity representations for enhanced oil recovery techniques

Elena Tamayo-Mas, Hussein Mustapha, and Roussos Dimitrakopoulos

G-2016-108

Nov 2016

Pattern-based stochastic simulation using restricted Boltzmann machine

Yanyan Mu, Frank P. Ferrie, and Roussos Dimitrakopoulos

G-2016-107

Nov 2016

Schedule-based pushback design with varying geotechnical constraints in the stochastic optimization framework

Iain Farmer and Roussos Dimitrakopoulos

G-2016-106

Nov 2016

Hyper-heuristic approaches for solving stochastic optimization formulations of mineral value chains

Amina Lamghari and Roussos Dimitrakopoulos

G-2016-105

Nov 2016

A multivariate destination policy for geometallurgical variables in mineral value chains using coalition-formation clustering

Maria Fernanda Del Castillo and Roussos Dimitrakopoulos

G-2016-104

Nov 2016

Updating short-term material flow optimization in a mining complex with new information

Cosmin Paduraru and Roussos Dimitrakopoulos

G-2016-101

Nov 2016

Optimizing infill drilling decisions using multi-armed bandits: Application in a long-term, multi-element stockpile

Rein Dirkx and Roussos Dimitrakopoulos

G-2016-103

Nov 2016

Risk-resilient mine production schedules yielding favourable product blends for rare earth element deposits

Matthew Quigley and Roussos Dimitrakopoulos

G-2016-102

Nov 2016

A dynamic-material-value-based decomposition method for mineral supply chain optimization

Jian Zhang and Roussos Dimitrakopoulos

G-2016-100

Nov 2016

A stochastic optimization formulation for the transition from open pit to underground mining

James MacNeil and Roussos Dimitrakopoulos

G-2016-99

Nov 2016

High-order data-driven spatial simulation using Legendre-like orthogonal splines

Ilnur Minniakhmetov and Roussos Dimitrakopoulos

G-2016-98

Nov 2016

Optimizing a multi-pit mining complex with intricate blending requirements under supply uncertainty

Luis Montiel and Roussos Dimitrakopoulos

G-2016-97

Nov 2016

A platform for optimizing mining complexes with uncertainty

Ryan Goodfellow and Roussos Dimitrakopoulos

G-2016-96

Jul 2016

A new high-order, non-stationary and transformation invariant spatial simulation approach

Amir Abbas Haji Abolhassani and Roussos Dimitrakopoulos

G-2016-52

Oct 2015

Underground long-term mine production scheduling with integrated geological risk management

Sabrina Carpentier, Michel Gamache, and Roussos Dimitrakopoulos

G-2015-107

Sep 2015

Long-term mine production scheduling with multiple processing destinations based on multi-neighbourhood tabu search

Renaud Senécal and Roussos Dimitrakopoulos

G-2015-87

Sep 2015

Mineral supply chain optimization under uncertainty using approximate dynamic programming

Cosmin Paduraru and Roussos Dimitrakopoulos

G-2015-94

Sep 2015

An adaptive large neighborhood search heuristic to optimize mineral supply chain operations under metal and material type uncertainties

Amina Lamghari and Roussos Dimitrakopoulos

G-2015-93

Sep 2015

Optimal mining rates revisited: Managing mining equipment and geological risk at a given mine setup

Marcelo C. Godoy, Maria Fernanda Del Castillo, and Roussos Dimitrakopoulos

G-2015-92

Sep 2015

Multiple-point simulation of Olympic Dam copper deposit, Australia, using wavelet analysis

Murilo Nogueira Teixeira and Roussos Dimitrakopoulos

G-2015-91

Sep 2015

Simulation of weathered profiles coupled with multivariate block-support simulation of the Puma Nickel Laterite Deposit, Brazil

Mario De Freitas Silva and Roussos Dimitrakopoulos

G-2015-90

Sep 2015

Stochastic long-term production scheduling of the LabMag iron ore deposit in Labrador, Canada

Michael Spleit and Roussos Dimitrakopoulos

G-2015-89

Sep 2015

All-inclusive stochastic short-term production scheduling approach of an iron-ore deposit with future multi-element ore control data

Martha E. Villalba Matamoros and Roussos Dimitrakopoulos

G-2015-88

Sep 2015

Optimizing a mineral supply chain under uncertainty with long-term sales contracts

Jian Zhang and Roussos Dimitrakopoulos

G-2015-86

Sep 2015

Joint simulation of correlated variables using high-order spatial statistics for orebody modeling

Ilnur Minniakhmetov and Roussos Dimitrakopoulos

G-2015-85

Sep 2015

Globally optimizing open-pit and underground mining operations under geological uncertainty

Luis Montiel, Roussos Dimitrakopoulos, and Kazuhiro Kawahata

G-2015-84

Sep 2015

Stochastic global optimization of open pit mining complexes with capital expenditures: Application at a copper mining complex

Ryan Goodfellow and Roussos Dimitrakopoulos

G-2015-83

Mar 2015

Stochastic strategic planning of open-pit mines, with ore selectivity recourse

Alessandro Navarra, Luis Montiel, and Roussos Dimitrakopoulos

G-2015-22

Aug 2014

Global asset optimization of open pit mining complexes under uncertainty

Ryan Goodfellow and Roussos Dimitrakopoulos

G-2014-55

Aug 2014

Two-stage stochastic surface constrained mine production scheduling with pit discretization

Alexandre Marinho and Roussos Dimitrakopoulos

G-2014-64

Aug 2014

Stochastic short-term mine production schedule accounting for fleet allocation, operational considerations and blending restrictions

Martha E. Villalba Matamoros and Roussos Dimitrakopoulos

G-2014-63

Aug 2014

Joint effect of commodity price and geological uncertainty over the life of mine and ultimate pit limit

Maria Fernanda Del Castillo and Roussos Dimitrakopoulos

G-2014-62

Aug 2014

Solving a large SIP model for production scheduling at a gold mine with multiple processing streams and uncertain geology

Mario De Freitas Silva, Amina Lamghari, and Roussos Dimitrakopoulos

G-2014-61

Aug 2014

Optimizing mining rates under financial uncertainty in global mining complexes

Arman C. Kizilkale and Roussos Dimitrakopoulos

G-2014-60

Aug 2014

Parallel implementation of Tabu search procedure for stochastic mine scheduling

Renaud Senécal and Roussos Dimitrakopoulos

G-2014-59

Aug 2014

High-order simulation at block support scale

David F. Machuca-Mory, Roussos Dimitrakopoulos, and Truong Pham

G-2014-57

Aug 2014

Production scheduling under undertainty for an open pit mine using Lagrangian relaxation and branch-and-cut algorithm

Snehamoy Chatterjee and Roussos Dimitrakopoulos

G-2014-58

Aug 2014

Optimizing mining complexes with multiple processing and transportation alternatives: An uncertainty-based approach

Luis Montiel and Roussos Dimitrakopoulos

G-2014-56

Jun 2014

Progressive hedging applied as a metaheuristic to schedule production in open-pit mines accounting for reserve uncertainty

Roussos Dimitrakopoulos and Amina Lamghari

G-2014-40

Sep 2013

Geologic Heterogeneity Recognition Using Discrete Wavelet Transformation for Subsurface Flow Solute Transport Simulations

Hussein Mustapha, Snehamoy Chatterjee, Roussos Dimitrakopoulos, and Thomas Graf

G-2013-66

Sep 2013

An Efficient Algorithm for the LP Relaxation of the Maximal Closure Problem with a Capacity Constraint

Jongik Byun and Roussos Dimitrakopoulos

G-2013-60

Sep 2013

An Integrated Approach to Mine Planning and Equipment Selection/Allocation

Mustafa Kumral and Roussos Dimitrakopoulos

G-2013-59

Sep 2013

High-Order Spacial Direct and Cross-Statistics for Categorical Attributes

David F. Machuca-Mory and Roussos Dimitrakopoulos

G-2013-62

Sep 2013

Surface Constrained Mine Production Scheduling with Uncertain Geology

Alexandre Marinho and Roussos Dimitrakopoulos

G-2013-61

Sep 2013

Multi-Point Geostatistical Simulation Based on a Quadratic Optimization Algorithm

Snehamoy Chatterjee and Roussos Dimitrakopoulos

G-2013-58

Sep 2013

On Tractable Markov Random Field Models and MapReduce Algorithms: Towards a Practitioner's Toolbox

Putra Manggala, Luc Devroye, and Roussos Dimitrakopoulos

G-2013-64

Sep 2013

A network-flow based algorithm for scheduling production in multi-processor open-pit mines accounting for metal uncertainty

Amina Lamghari and Roussos Dimitrakopoulos

G-2013-63

Sep 2013

An Extended Stochastic Optimization Method for Multi-Process Mining Complexes

Luis Montiel and Roussos Dimitrakopoulos

G-2013-56

Sep 2013

A Heuristic Approach to Stochastic Cutoff Grade Optimization for Open Pit Mining Complexes

Mohammad Waqar Ali Asad and Roussos Dimitrakopoulos

G-2013-55

Sep 2013

Mining Supply Chain Optimization under Geological Uncertainty

Ryan Goodfellow and Roussos Dimitrakopoulos

G-2013-54

Sep 2013

High-Order Simulation with Clustered Datasets

David F. Machuca-Mory and Roussos Dimitrakopoulos

G-2013-57

Cahiers du GERAD

Roussos Dimitrakopoulos

Annual Reports