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JULIAN MAXIMILIANO ORTIZ CABRERA

Associate Professor

Queen's University

Kingston, ON, Canada

Mineria, Geometalurgia, Geoestadistica, Modelamiento Predictivo, Modelos Estocasticos, Analisis de imagenes, Analisis de texturas

Mining Engineering, UNIVERSITY OF ALBERTA. Canada, 2003
Ciencias de la Ingenieria, mencion Minas, UNIVERSIDAD DE CHILE. Chile, 1998
Ingeniero Civil de Minas, UNIVERSIDAD DE CHILE. Chile, 1998

Profesor Asociado Full Time

UNIVERSIDAD DE CHILE

Ciencias Fisicas y Matematicas

Santiago, Chile

2011 - 2016
Profesor Asistente Full Time

UNIVERSIDAD DE CHILE

Ciencias Fisicas y Matematicas

Santiago, Chile

2004 - 2011
Profesor Asociado Part Time

UNIVERSIDAD DE CHILE

Ciencias Fisicas y Matematicas

Santiago, Chile

2016 - At present
Associate Professor Full Time

QUEEN'S UNIVERSITY AT KINGSTON

Engineering and Applied Science

Kingston, ON, Canada

2016 - At present

Principal Consultant Other

Octal Ingenieria y Desarrollo

Santiago, Chile

2008 - At present

Dr. Ortiz has advised students, including: Undergraduate (74), Master level (21), Doctorate level (2) in programs in Mining Engineering, Geology, Computer Science, Mathematics, Electrical Engineering, Civil Engineering


An LSTM Approach for SAG Mill Operational Relative-Hardness Prediction Avalos, Sebastian; Kracht, Willy; Ortiz, Julian Article MINERALS (2020)
Copper mining: 100% solar electricity by 2030? Haas J.; Moreno-Leiva S.; Junne T.; Chen P.-J.; Pamparana G.; Nowak W.; Kracht W.; Ortiz J.M. Article ISI SCOPUS (2020)
Machine Learning and Deep Learning Methods in Mining Operations: a Data-Driven SAG Mill Energy Consumption Prediction Application Avalos, Sebastian; Kracht, Willy; Ortiz, Julian M. Article ISI MINING METALLURGY EXPLORATION (2020)
Optimization of a SAG Mill Energy System: Integrating Rock Hardness, Solar Irradiation, Climate Change, and Demand-Side Management Ortiz J.M.; Kracht W.; Pamparana G.; Haas J. Article ISI SCOPUS MATHEMATICAL GEOSCIENCES (2020)
Ore-Waste Discrimination with Adaptive Sampling Strategy SantibÃ¡Ã±ez-Leal F.A.; Ortiz J.M.; Silva J.F. Article ISI SCOPUS Natural Resources Research (2020)
Recursive convolutional neural networks in a multiple-point statistics framework Avalos, Sebastian; Ortiz, Julian M. Article ISI COMPUTERS & GEOSCIENCES (2020)
Simulation of Synthetic Exploration and Geometallurgical Database of Porphyry Copper Deposits for Educational Purposes Garrido, Mauricio; Sepulveda, Exequiel; Ortiz, Julian; Townley, Brian Article ISI NATURAL RESOURCES RESEARCH (2020)
Change of support using non-additive variables with Gibbs Sampler: Application to metallurgical recovery of sulphide ores Garrido, M; Ortiz, JM; Villaseca, F; Kracht, W; Townleye, B; Miranda, R Article ISI SCOPUS COMPUTERS & GEOSCIENCES (2019)
Geological Facies Recovery Based on Weighted l(1)-Regularization Calderon, Hernan; Santibañez, Felipe; Silva, Jorge F.; Ortiz, Julián M.; Egaña, Alvaro Article ISI SCOPUS MATHEMATICAL GEOSCIENCES (2019)
Sampling Strategies for Uncertainty Reduction in Categorical Random Fields: Formulation, Mathematical Analysis and Application to Multiple-Point Simulations Santibañez, Felipe; Silva, Jorge F.; Ortiz, Julián M. Article ISI SCOPUS MATHEMATICAL GEOSCIENCES (2019)
Sequential Indicator Simulation with Locally Varying Anisotropy – Simulating Mineralized Units in a Porphyry Copper Deposit. Gutierrez, Rodrigo; Ortiz, Julian Article JOURNAL OF MINING ENGINEERING AND RESEARCH (2019)
Studying the integration of solar energy into the operation of a semi-autogenous grinding mill. Part I: Framework, model development and effect of solar irradiance forecasting Pamparana G.; Kracht W.; Haas J.; Ortiz J.M.; Nowak W.; Palma-Behnke R. Article ISI SCOPUS MINERALS ENGINEERING (2019)
Studying the integration of solar energy into the operation of a semi-autogenous grinding mill. Part II: Effect of ore hardness variability, geometallurgical modeling and demand side management Pamparana G.; Kracht W.; Haas J.; Ortiz J.M.; Nowak W.; Palma-Behnke R. Article ISI SCOPUS MINERALS ENGINEERING (2019)
Variogram-Based Descriptors for Comparison and Classification of Rock Texture Images Díaz G.F.; Ortiz J.M.; Silva J.F.; Lobos R.A.; Egaña Á.F. Article ISI SCOPUS MATHEMATICAL GEOSCIENCES (2019)
A path-level exact parallelization strategy for sequential simulation Peredo, OF; Baeza, D; ORTIZ, JM; Herrero, JR Article ISI SCOPUS COMPUTERS & GEOSCIENCES (2018)
Antithetic random fields applied to mine planning under uncertainty Nelis, S. Gonzalo; Ortiz, Julián M.; Morales, V.Nelson Article ISI SCOPUS Computers and Geosciences (2018)
A comparison between ACO and Dijkstra algorithms for optimal ore concentrate pipeline routing Baeza, Daniel; Ihle, Christian F.; Ortiz, Julián M. Article ISI SCOPUS JOURNAL OF CLEANER PRODUCTION (2017)
Analysis and Classification of Natural Rock Textures based on New Transform-based Features Lobos, Rodrigo; Silva, Jorge F.; Ortiz, Julin M.; Daz, Gonzalo; Egaa, Alvaro Article ISI SCOPUS MATHEMATICAL GEOSCIENCES (2016)
Inverse Modeling of Moving Average Isotropic Kernels for Non-parametric Three-Dimensional Gaussian Simulation Peredo, O; Ortiz J.M.; Leuangthong O. Article ISI SCOPUS Mathematical Geosciences (2016)
Acceleration of the Geostatistical Software Library (GSLIB) by code optimization and hybrid parallel programming Peredo, O; Ortiz, JM; Herrero, JR Article ISI SCOPUS Computers and Geosciences (2015)
Reconstruction of channelized geological facies based on RIPless compressed sensing Calderon, H; Silva J.F.; Ortiz J.M.; Egana A Article ISI SCOPUS COMPUTERS & GEOSCIENCES (2015)
Designing an advanced RC drilling grid for short-Term planning in open pit mines: Three case studies Ortiz J.M.; Magri E.J. Article SCOPUS Journal of the Southern African Institute of Mining and Metallurgy (2014)
Multiple-Point Geostatistical Simulation of Dykes=> Application at Sungun Porphyry Copper System, Iran Rezae, H.; Asghari, O.; Koneshloo, M.; Ortiz, J. M. Article Stochastic Environmental Research and Risk Assessment (2014)
Tuning and Hybrid Parallelization of a Genetic-based Multi-Point Statistics Simulation Code Peredo, O.; Ortiz, J. M.; Herrero, J. R.; Samaniego, C. Article Parallel Computing (2014)
Verifying the high-order consistency of training images with data for multiple-point geostatistics Pérez, C. Mariethoz; G. Ortiz, J. M. Article Computers & Geosciences (2014)
Assessment of rmr and its uncertainty by using geostatistical simulation in a mining project Egaña M.; Ortiz J.M. Article SCOPUS Journal of GeoEngineering (2013)
Detecting and quantifying sources of non-stationarity via experimental semivariogram modeling Cuba M.A.; Leuangthong O.; Ortiz J.M. Article ISI SCOPUS Stochastic Environmental Research and Risk Assessment (2012)
Enhanced coregionalization analysis for simulating vector Gaussian random fields Emery, X; Ortiz J.M. Article ISI SCOPUS Computers and Geosciences (2012)
Improving financial returns from mining through geostatistical simulation and the optimized advance drilling grid at El Tesoro Copper Mine Ortiz J.M.; Magri E.J.; Libano R. Article ISI SCOPUS Journal of the Southern African Institute of Mining and Metallurgy (2012)
Transferring sampling errors into geostatistical modelling Cuba M.; Leuangthong O.; Ortiz J. Article ISI SCOPUS Journal of the Southern African Institute of Mining and Metallurgy (2012)
A Comparison of Random Field Models Beyond Bivariate Distributions Emery, X; Ortiz J.M. Article ISI SCOPUS Mathematical Geosciences (2011)
Adapting a texture synthesis algorithm for conditional multiple point geostatistical simulation Parra, A.; Ortiz, JM Article ISI SCOPUS Stochastic Environmental Research and Risk Assessment (2011)
Parallel implementation of simulated annealing to reproduce multiple-point statistics Peredo, O; Ortiz, JM Article ISI SCOPUS Computers and Geosciences (2011)
Two approaches to direct block-support conditional co-simulation Emery, X; Ortiz, JM Article ISI SCOPUS Computers and Geosciences (2011)
A methodology to construct training images for vein-type deposits Boisvert, JB; Leuangthong O.; Ortiz, JM; Deutsch, CV Article ISI SCOPUS COMPUTERS & GEOSCIENCES (2008)
Geostatistical modelling of rock type domains with spatially varying proportions: application to a porphyry copper deposit Emery, X; Ortiz, JM; Caceres, AM Article ISI SCOPUS Journal of the south african institute of mining and metallurgy (2008)
On the challenge of using sequential indicator simulation for the estimation of recoverable reserves Machuca-Mory D.F.; Deutsch C.V.; Ortiz J.M. Article SCOPUS INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT (2008)
Scaling multiple-point statistics to different univariate proportions Ortiz, JM; Lyster S., Deutsch Article COMPUTERS & GEOSCIENCES (2007)
Weighted sample variograms as a tool to better assess the spatial variability of soil properties Emery, X; Ortiz, JM Article GEODERMA (2007)
Geostatistical estimation of mineral resources with soft geological boundaries=> a comparative study Ortiz, JM; Emery, X Article JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY (2006)
Quantifying uncertainty in mineral resources by use of classification schemes and conditional simulations Emery, X; Ortiz, JM; Rodriguez, JJ Article MATHEMATICAL GEOLOGY (2006)
Estimation of mineral resources using grade domains=> critical analysis and a suggested methodology Emery, X; Ortiz, JM Article JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY (2005)
Histogram and variogram inference in the multigaussian model Emery, X; Ortiz, JM Article STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT (2005)
Shortcomings of multiple indicator kriging for assessing local distributions Emery, X; Ortiz J.M. Article SCOPUS Transactions of the Institutions of Mining and Metallurgy, Section B: Applied Earth Science (2004)


An ant colony optimization-based approach for long distance ore pipeline routing Baeza D.; Ihle, C. F.; Ortiz J.M. ConferencePaper SCOPUS Application of Computers and Operations Research in the Mineral Industry - Proceedings of the 37th International Symposium, APCOM 20 (2015)
Geodesic kriging in the Waberstein space Gouet R.; Lopez A.; Ortiz J.M. ConferencePaper SCOPUS Proceedings of IAMG 2015 - 17th Annual Conference of the International Association for Mathematical Geosciences (2015)
Incorporating distributed Dijkstra's algorithm into variogram calculation with locally varying anisotropy Peredo, O; Navarro, F; Garrido M.; Ortiz J.M. ConferencePaper SCOPUS Application of Computers and Operations Research in the Mineral Industry - Proceedings of the 37th International Symposium, APCOM 20 (2015)
Practical aspects of resources modeling in presence of locally varying anisotropy Peredo, O; Garrido M.; Ortiz J.M. ConferencePaper SCOPUS Proceedings of IAMG 2015 - 17th Annual Conference of the International Association for Mathematical Geosciences (2015)
Workflows in geometallurgical prediction: Challenges and outlook Ortiz J.M.; Kracht, W.; Townley B.; Lois, P; Cardenas, E.; Miranda, R.; Alvarez M. ConferencePaper SCOPUS Proceedings of IAMG 2015 - 17th Annual Conference of the International Association for Mathematical Geosciences (2015)
Resurrecting GSLIB by code optimization and multi-core programming Peredo, O; Ortiz J.M. ConferencePaper SCOPUS Proceedings of the 16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Ch (2014)
A novel approach to estimate the gap between the middle-and short-term plans Yarmuch J.; Ortiz J. ConferencePaper 1604-2004: SUPERNOVAE AS COSMOLOGICAL LIGHTHOUSES (2011)
Conditional multiple-point simulation with a texture synthesis algorithm Parra, A.; Ortiz J.M. ConferencePaper SCOPUS IAMG 2009 - Computational Methods for the Earth, Energy and Environmental Sciences (2009)
Evaluation of the uncertainty of spatial precipitation variability using a multiGaussian model Dussaubat, S; Vargas, X; Ortiz J. ConferencePaper ISI HYDROLOGY IN A CHANGING WORLD: ENVIRONMENTAL AND HUMAN DIMENSIONS (2006)


Detección y caracterización de variables geometalúrgicas a partir de imágenes hiperespectrales FONDEF (CA13I10305) Proyecto 2014-2015 Subdirector(a)
Topics on Signal and Information Processing=> Theory and Applications to Geological Image Reconstruction FONDECYT (1140840) Proyecto 2014-2017 Coinvestigador(a)
CAM-G=> Modelamiento de geología asistido por computador. BHP Billiton Base Metals Proyecto 2011-2013 Director(a)
MQAlt=> Modelamiento multivariable cuantitativo de alteración. BHP Billiton Base Metals Proyecto 2011-2013 Director(a)
TexIM=> Análisis de imágenes para la caracterización de texturas. BHP Billiton Base Metals Proyecto 2011-2013 Director(a)
U-Fo=> Software de Restitución geométrica de cuerpos geológicos para modelamiento de recursos Yamana Gold Inc. Proyecto 2011-2015 Director(a)
Modelamiento de cobre soluble y cobre total Minera El Tesoro Proyecto 2010-2011 Director(a)
Advanced Mining Technology Center - AMTC FONDAP (FB0809) Proyecto 2009-2013 Inv. Principal
Multiple Point Geostatistics for the Evaluation of Uncertainty in Geological Attributes and Grades FONDECYT (1090056) Proyecto 2009-2012 Inv. Responsable
Multivariate Geostatistics and its Application to the Characterization of Mineral Resources FONDECYT (1090013) Proyecto 2009-2013 Coinvestigador(a)
Multivariate Modelling for the Evaluation of Ore Deposits Innova Corfo (09CN14-5838) Proyecto 2009-2012 Director(a)
Cuantificación de la Incertidumbre en Atributos Geológicos, Mineros y Metalúrgicos=> Nuevos Modelos Geoestadísticos y Aspectos de Implementación FONDECYT (10601103) Proyecto 2006-2009 Coinvestigador(a)
Evaluación de Yacimientos mediante Simulación Estocástica integrando Estadísticas de Múltiples Puntos FONDECYT (1061260) Proyecto 2006-2008 Inv. Responsable
Evaluación de recursos de depósitos mineros mediante simulación estocástica Fundación ANDES (C-14060-19) Proyecto 2005-2007 Inv. Responsable
Modelamiento de la incertidumbre en geología y leyes y su impacto en la selectividad de explotaciones mineras FONDEF (D04I1055) Proyecto 2005-2008 Inv. Principal
Estimación Geoestadística de Recursos In Situ con Énfasis en el Control Geológico FONDECYT (1040690) Proyecto 2004-2006 Coinvestigador(a)