Here is a list of publications by Dr. Julian M. Ortiz.

2020:

  • Santibáñez-Leal FA, Ortiz JM, Silva JF (2020) Ore-waste discrimination with adaptive sampling strategy, Natural Resources Research. https://doi.org/10.1007/s11053-020-09625-3
  • Haas, J., Moreno-Leiva, S., Junne, T., Chen, P.-J., Pamparana, G., Nowak, W., Kracht, W., Ortiz, J. M. (2020) Copper mining: 100% solar electricity by 2030?, Applied Energy, 262, 114506.
  • Díaz GF, Ortiz JM, Silva JF, Lobos RA, Egaña AF (2020) Variogram-based descriptors for comparison and classification of rock texture images, Mathematical Geosciences. https://doi.org/10.1007/s11004-019-09833-5
  • Calderón H, Santibáñez F, Silva JF, Ortiz JM, Egaña A (2020) Geological facies recovery based on weighted l1-regularization, Mathematical Geosciences. https://doi.org/10.1007/s11004-019-09825-5
  • Ortiz JM, Kracht W, Pamparana G, Haas J (2020) Optimization of a SAG mill energy system: integrating rock hardness, solar irradiation, climate change and demand side management, Mathematical Geosciences, 52: 355-379. https://doi.org/10.1007/s11004-019-09816-6
  • Cevik IS, Ortiz JM, Olivo GR (2020) A combined multivariate approach analyzing the geochemical data for knowledge discovery: the Vazante-Paracatu Zinc district, Minas Gerais, Brazil, poster, PDAC-SEG student mineral colloquium, Toronto, ON, March 3, 2020. Wins 3rd place in Master’s category.
  • Ortiz JM, Cevik SI, Avalos S, Kracht W, Leuangthong O (2020) Machine learning and deep learning in predictive geometallurgical modeling, PDAC, Toronto, ON, March 4, 2020.

2019:

  • Gutiérrez R, Ortiz JM (2019) Sequential indicator simulation with locally varying anisotropy – Simulating mineralized units in a porphyry copper deposit, Journal of Mining Engineering and Research, 1(1): 1-7. https://org/10.35624/jminer2019.01.01
  • Pamparana G, Kracht W, Haas J, Ortiz JM, Nowak W, Palma-Behnke R (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, Minerals Engineering, 137: 68-77. https://doi.org/10.1016/j.mineng.2019.03.017
  • Pamparana G, Kracht W, Haas J, Ortiz JM, Nowak W, Palma-Behnke R (2019) Studying the integration of solar energy into the operation of a semi-autogenous grinding mill. Part II: effect of ore hardness variability and geometallurgical modeling and management, Minerals Engineering, 137: 53-67. https://doi.org/10.1016/j.mineng.2019.03.016
  • Santibáñez F, Silva JF, Ortiz JM (2019) Sampling strategies for uncertainty reduction in categorical random fields: formulation, mathematical analysis and application to multiple-point simulations, Mathematical Geosciences, 51: 579-624. https://doi.org/10.1007/s11004-018-09777-2
  • Garrido M, Ortiz JM, Villaseca F, Kracht W, Townley B, Miranda R (2019) Change of support using non-additive variables with Gibbs Sampler: application to metallurgical recovery of sulphide ores, Computers & Geosciences, 122: 68-76. https://doi.org/10.1016/j.cageo.2018.10.002
  • Jelvez E, Morales N, Ortiz JM (2019) Impact of geological uncertainty at different stages of the open-pit mine production planning process, in: Topal E. (eds), Proceedings of the 28th International Symposium on Mine Planning & Equipment Selection – MPES 2019, Springer Series in Geomechanics and Engineering, 83-91.
  • Garrido M, Ortiz JM, Sepulveda E, Farfan L, Townley B (2019) An overview of good practices in the use of geometallurgy to support mining reserves in copper sulfides deposits, Procemin-Geomet 2019, 6th International Seminar on Geometallurgy, Santiago, Chile, November 20-22, 2019, 12p.
  • Avalos S, Kracht W, Ortiz JM (2019) Forecasting SAG mil energy consumption using Gated Recurrent Units, COM-Copper 2019, Proceedings of the 58th Annual Conference of Metallurgists (COM), hosting the 10th International Copper Conference 2019, Vancouver, BC, August 18-21, 2019, paper 574722, 13p.
  • Pamparana G, Kracht W, Ortiz JM, Haas J (2019) Understanding the Effect of Ore Hardness Variability on the Integration of Solar Energy into the Operation of a Semi-Autogenous Grinding Mill, COM-Copper 2019, Proceedings of the 58th Annual Conference of Metallurgists (COM), hosting the 10th International Copper Conference 2019, Vancouver, BC, August 18-21, 2019, paper 590145, 10p.
  • Riquelme A, Ortiz JM (2019) Uncertainty assessment in an arbitrary volume without the use of geostatistical simulation, Geomin-Mineplanning 2019, Proceedings of the 6th International Conference on Geology and Mine Planning, Santiago, Chile, August 7-9, 2019, Campos E and Morales N (eds.), Gecamin, 8 p.
  • Avalos, S., Ortiz J. M. (2019) Recursive Convolutional Neural Networks in a Multiple-Points Statistics Framework, Mining Goes Digital, Proceedings of the 39th International Symposium Application of Computers and Operations Research in the Mineral Industry (APCOM 2019), Wroclaw, Poland, 4-6 June 2019, Mueller, C. et al. (eds.), CRC Press, 168-176.
  • Avalos S, Ortiz JM (2019) Geological modelling using a recursive convolutional neural networks approach, CIM 2019 Convention, 8 p. https://arxiv.org/abs/1904.12190
  • Bolgkoranou, M., Ortiz, J.M. (2019) Multivariate geostatistical simulation of compositional data using Principal Component Analysis – Application to a Nickel laterite deposit, Mining Goes Digital, Proceedings of the 39th International Symposium Application of Computers and Operations Research in the Mineral Industry (APCOM 2019), Wroclaw, Poland, 4-6 June 2019, Mueller, C. et al. (eds.), CRC Press, 76-85.
  • Nelis G, Ortiz JM, Morales N (2019) Performance assessment of antithetic random fields in a stochastic mine planning model, Mining Goes Digital, Proceedings of the 39th International Symposium Application of Computers and Operations Research in the Mineral Industry (APCOM 2019), Wroclaw, Poland, 4-6 June 2019, Mueller, C. et al. (eds.), CRC Press, 300-308.
  • Riquelme AI, Ortiz JM (2019) Uncertainty assessment in an arbitrary volume without the use of geostatistical simulation, presentation and poster, CIM 2019 Convention.
  • Bolgkoranou M, Ortiz JM (2019) Improving multivariate geostatistical modelling with data transformations, presentation and poster, CIM 2019 Convention.

2018:

  • Ortiz, J. M. (2018) Book Review: Richard J. Howarth: Dictionary of Mathematical Geosciences: With Historical Notes, Mathematical Geosciences, 51: 127-128. DOI: 10.1007/s11004-018-09779-0
  • Nelis, G., Ortiz, J. M., Morales, N. (2018) Antithetic Random Fields applied to Mine Planning under Uncertainty, Computers and Geosciences, 121: 23-29. https://doi.org/10.1016/j.cageo.2018.09.003
  • Peredo, O.F., Baeza, D., Ortiz, J.M., Herrero, J.R., (2018) A path-level exact parallelization strategy for sequential simulation, Computers and Geosciences (ISI), 110:10-22.
  • Garrido, M., Sepulveda, E., Ortiz, J.M., Navarro, F., Townley, B. (2018) A methodology for the simulation of synthetic geometallurgical block models of porphyry ore bodies, Geomet 2018 – 5th International Seminar on Geometallurgy, November 28-30, 2018, Santiago, Chile, 10 p.
  • Ortiz, J. M., Kracht, W., Pamparana, G., Haas, J. (2018) Integrating uncertainty in rock hardness and solar irradiation in the optimization of a SAG mill energy system, 12th Conference on Geostatistics for Environmental Applications, Geoenv 2018, Belfast, Ireland, July 4-5, 2018.
  • Pamparana, G., Kracht, W., Ortiz, J. M. (2018) Geometallurgical approach for the integration of solar energy into mineral processing, Resource for Future Generations – Premier Conference on Energy, Minerals, Water, The Earth, RFG 2018, Vancouver, BC, Canada, June 16-21, 2018.
  • Aguirre H, Rielo O, Ortiz J, Daneshmend L (2018) Information for all: Transforming the Mining Operations Management Paradigm, 2018 SME Annual Conference, February 25-28, 2018, Minneapolis, MN.

2017:

  • Baeza, D., Ihle, C. F., Ortiz, J. M., (2017) A Comparison between ACO and Dijkstra Algorithms for Optimal Ore Concentrate Pipeline Routing, Journal of Cleaner Production (ISI), 144:149-160.
  • Madani N, Ortiz J (2017) Geostatistical Simulation of Cross-Correlated Variables: a Case Study though Cerro Matoso Nickel Laterite Deposit, Proceedings of the 26th International Symposium on Mine Planning and Equipment Selection MPES 2017, Luleå, Sweden, 29-31 August 2017, 463-468.
  • Ortiz JM, Marulanda Y (2017) Semi-automated texture classification for geometallurgical applications, oral presentation, 18th Annual Conference IAMG 2017, 2-9 September 2017, Perth, Australia (paper 229)
  • Jelvez E, Morales N, Ortiz J (2017) An efficient frontier analysis to determine final pit under geological uncertainty, 2017 INFORMS annual meeting, Houston, TX.
  • Ortiz JM, Kracht W, Pamparana G, Haas J (2017) Integrating sustainable energy sources into a semi-autogenous grinding mill: a simulated case study accounting for spatial variability of ore grindability, oral presentation at Kingston 2017 GAC-MAC annual meeting, Kingston, On, Canada, May 14-18, 2017 (abstract 290, session GE1 – Geometallurgy – From Exploration to Remediation).

2016:

  • Lobos, R., Silva, J. F., Ortiz, J. M., Díaz, G., Egaña, A., (2016) Analysis and Classification of Natural Rock Textures based on New Transform-based Features, Mathematical Geosciences (ISI), 48(7):835-870.
  • Lopez, A. Barberan, A., Alarcon, M., Vargas, E., Ortiz, J., Morales, N., Emery, X., Egana, A., McFarlane, A., Friedrich, C. (2016) Progress towards Data-driven Mine Planning via a Virtual Geometallurgical Laboratory, Geomet 2016, The Third AusIMM International Geometallurgy Conference, 15-16 June, 2016, Perth, Australia.
  • Calderón, H., Santibañez, F., Silva, J. F., Ortiz, J., Egaña, A. (2016) Channelized Facies Recovery based on Weighted Compressed Sensing, abstract accepted, 2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), 10-13 July, 2016, Rio de Janeiro, Brazil.
  • Peredo, O., Ortiz, J. (2016) Urban Dynamics Estimation using Mobile Phone logs and Locally Varying Anisotropy, abstract accepted, Geostats 2016 – 10th International Geostatistical Congress, September 5-9, 2016, Valencia, Spain.
  • Garrido, M., Navarro, F., Ortiz, J., Moreira, J., (2016) Resource assessment with unfolding methodology: a case study, abstract accepted, MININ 2016 – 6th International Conference on Innovations in Mine Operations, August 21-23, 2016, Santiago, Chile.
  • Navarro, F., Garrido, M., Diaz, G., Ortiz, J., Egaña, A., (2016) New human-computer interfaces to capture expert geological knowledge, abstract accepted, MININ 2016 – 6th International Conference on Innovations in Mine Operations, August 21-23, 2016, Santiago, Chile.
  • Díaz, G., Egaña, A., Cortés, M., Ortiz, J., (2016) Rock texture discrimination: a new tool for geological characterization, abstract accepted, MININ 2016 – 6th International Conference on Innovations in Mine Operations, August 21-23, 2016, Santiago, Chile.

2015:

  • Peredo, O., Ortiz, J. M., Herrero, J. R., (2015) Acceleration of the Geostatistical Software Library (GSLIB) by Code Optimization and Hybrid Parallel Programming, Computers & Geosciences (ISI), 85(A):210-233.
  • Peredo, O., Ortiz, J. M., Leuangthong, O., (2015) Inverse Modeling of Moving Average Isotropic Kernels for Non-parametric Three-Dimensional Gaussian Simulation, Mathematical Geosciences (ISI), 48:559-579.
  • Calderón, H., Silva, J. F., Ortiz, J. M., Egaña, A., (2015) Reconstruction of Channelized Geological Facies based on RIPless Compressed Sensing, Computers & Geosciences (ISI), 77: 54-65.
  • Pérez, C., Ortiz, J. M., Boucher, A., (2015) Geological resources modeling in mining, in “Multiple-Point Geostatistics: stochastic modelling with training images”, by G, Mariethoz and J. Caers, Wiley-Blackwell, p. 329-343.
  • Ortiz J. M., Kracht, W., Townley, B., Lois, P., Cárdenas, E., Miranda, R., Álvarez, M., (2015) Workflows in Geometallurgical Prediction: Challenges and Outlook, in Proceedings of the 17th Annual Conference of the International Association for Mathematical Geosciences IAMG 2015, Schaeben, H., Tolosana-Delgado, R., van den Boogaart, K. G., van den Boogaart, R. (editors), 6p.
  • Gouet, R., López, A., Ortiz J. M., (2015) Geodesic Kriging in the Wasserstein Space, in Proceedings of the 17th Annual Conference of the International Association for Mathematical Geosciences IAMG 2015, Schaeben, H., Tolosana-Delgado, R., van den Boogaart, K. G., van den Boogaart, R. (editors), 10p.
  • Peredo, O. Garrido, M., Ortiz J. M., (2015) Practical Aspects of Resources Modeling in presence of Locally Varying Anisotropy, in Proceedings of the 17th Annual Conference of the International Association for Mathematical Geosciences IAMG 2015, Schaeben, H., Tolosana-Delgado, R., van den Boogaart, K. G., van den Boogaart, R. (editors), 8p.
  • Soto, F., Ortiz, J. M., Garrido, M., (2015) U-Fo: Software for Resource Estimation in Presence of Faults and Folds, in Proceedings of the 4th International Seminar on Geology for the Mining Industry, Aracena, I., Freire, R., Ibarra, F., Menzies, A. (editors), extended abstract.
  • Peredo, O., Ortiz, J. M., (2015) Acceleration of GSLIB Package using multi-core and many-core processors, in Proceedings of the 4th International Seminar on Geology for the Mining Industry, Aracena, I., Freire, R., Ibarra, F., Menzies, A. (editors), extended abstract.
  • Baeza, D., Ihle, C. F., Ortiz, J. M., (2015) The implications of the cost function on the optimal slurry pipeline route, in Rio Pipeline Conference & Exposition 2015, 9p.
  • Peredo, O., Navarro, F., Garrido, M., Ortiz, J. M., (2015) Incorporating distributed Dijkstra’s algorithm into variogram calculation with locally varying anisotropy, in Proceedings of the 37th International Symposium APCOM 2015, S. Bandopadhyay (editor), 1162-1170.
  • Baeza, D., Ihle, C. F., Ortiz, J. M., (2015) An ant colony optimization-based approach for long distance ore pipeline routing, in Proceedings of the 37th International Symposium APCOM 2015, S. Bandopadhyay (editor), 588-597.

2014:

  • Ortiz, J. M., Magri, E. J., (2014) Designing and Advanced RC Drilling Grid for Short-Term Planning in Open Pit Mines: Three Case Studies, The Journal of the Southern African Institute of Mining and Metallurgy (ISI), 114: 631-637.
  • Rezaee, H., Asghari, O., Koneshloo, M., Ortiz, J. M., (2014) Multiple-Point Geostatistical Simulation of Dykes: Application at Sungun Porphyry Copper System, Iran, Stochastic Environmental Research and Risk Assessment (ISI), 28: 1913-1927.
  • Pérez, C., Mariethoz, G., Ortiz, J. M., (2014) Verifying the high-order consistency of training images with data for multiple-point geostatistics, Computers & Geosciences (ISI), 70: 190-205.
  • Peredo, O., Ortiz, J. M., Herrero, J. R., Samaniego, C., (2014) Tuning and Hybrid Parallelization of a Genetic-based Multi-Point Statistics Simulation Code, Parallel Computing (ISI), 40: 144-158.
  • Navarro, F., Gonzalez, C., Peredo, O., Morales, G., Egana, A., Ortiz, J. M., (2014) A flexible strategy for distributed and parallel execution of a monolithic large-scale sequential application, in Proceedings of First HPCLATAM-CLCAR Latin America Joint Conference, CARLA 2014, Hernandez, G., et al (Eds.), Springer-Verlag, Valparaiso, Chile, October 20-24, 2014, pp. 54-67.
  • Peredo, O., Ortiz, J. M. (2014) Resurrecting GSLIB by code optimization and multi-core programming, in: Geostatistical and geospatial approaches for the characterization of natural resources in the environment: Challenges, Processes and Strategies, 16th IAMG Conference, New Dehli, India, October 17-20, 2014.
  • Peredo, O., Ortiz, J. M., Leuangthong, O., (2014) Inverse modeling of moving average kernels for 3D Gaussian simulation, in 10th Conference on Geostatistics for Environmental Applications, geoENV2014, Paris, France, July 9-11, 2014, 10 p.

2013:

  • Egaña, M., Ortiz, J.M., (2013) Assessment of RMR and its uncertainty by using geostatistical simulation in a mining project, Journal of GeoEngineering, 8(3):83-90.
  • Ortiz, J. M., (2013) Book Review: Jef Caers: Modeling Uncertainty in the Earth Sciences, Mathematical Geosciences (ISI), 45(1): 127-130.
  • Soto, F., Ortiz, J. M., Herreros, D., Valencia, M., (2013) Geometric restitution for improving mineral resource estimation applied to Peumo deposit, in Geomin 2013, 3rd International Seminar on Geology for the Mining Industry, Santiago, Chile, 24-26 July, 2013, 7p.

2012:

  • Cuba, M., Leuangthong, O., Ortiz, J. M., (2012) Transferring Sampling Errors into Geostatistical Modeling, Journal of the Southern African Institute of Mining and Metallurgy (ISI), 112(11): 971-983.
  • Ortiz, J. M., Magri, E. J., Líbano, R., (2012) Improving financial returns from mining through geostatistical simulation and the optimized advance drilling grid at El Tesoro Copper Mine, Journal of the Southern African Institute of Mining and Metallurgy (ISI), 112 (1): 15-22.
  • Emery, X., Ortiz, J. M., (2012) Enhanced coregionalization analysis for simulating vector Gaussian random fields, Computers & Geosciences (ISI), 42: 126-135.
  • Cuba, M., Leuangthong, O., Ortiz, J. M., (2012) Detecting and Quantifying Sources of Non-Stationarity via Experimental Semivariogram Modeling, Stochastic Environmental Research and Risk Assessment (ISI), 26(2): 247-260.
  • Baeza, D., Sepúlveda, E., Ortiz, J. M., (2012) Implementation of parallelized conditional simulation in graphical processing units for generating large resource models, in 5th International Conference on Innovation in Mine Operations, MININ 2012, Santiago, Chile, June 20–22, 2012, abstract.
  • Yarmuch, J. L., Ortiz, J. M., (2012) Mine simulation of an open pit mine material handling system using discrete events, in 5th International Conference on Innovation in Mine Operations, MININ 2012, Santiago, Chile, June 20–22, 2012, abstract.
  • Baeza, D., Sepúlveda, E., Ortiz, J. M., (2012) Parallelization of simulation algorithm with GPU for constructing high resolution models of Earth Sciences variables, in Ninth Conference on Geostatistics for Environmental Applications, geoENV2012, Valencia, Spain, September 19–21, 2012, 5 p.
  • Baeza, D., Sepúlveda, E., Ortiz, J., (2012) Improving an efficient simulation of multidimensional Gaussian random fields in GPU, in V Latin American Symposium on High Performance Computing HPCLatAm 2012, Buenos Aires, Argentina, July 23-24, 2012, 12 p.
  • Peredo, O., Ortiz, J.M., (2012) Multiple-point geostatistical simulation based on genetic algorithms implemented in a shared-memory supercomputer, in proceedings of the Ninth International Geostatistics Congress, Oslo, Norway, June 11 – 15, 2012, P. 103-114.

2011:

  • Parra, A., Ortiz, J. M., (2011) Adapting a Texture Synthesis Algorithm for Conditional Multiple Point Geostatistical Simulation, Stochastic Environmental Research and Risk Assessment (ISI), 25(8): 1101-1111.
  • Peredo, O., Ortiz, J. M., (2011) Parallel implementation of simulated annealing to reproduce multiple-point statistics, Computers & Geosciences (ISI), 37(8): 1110-1121.
  • Emery, X., Ortiz, J. M., (2011) Two approaches to direct block-support conditional co-simulation, Computers & Geosciences (ISI), 37(8): 1015-1025.
  • Emery, X., Ortiz, J. M., (2011) A Comparison of Random Field Models Beyond Bivariate Distributions, Mathematical Geosciences (ISI), 43(2):183-202.
  • Yarmuch, J.L., Ortiz, J.M., (2011) A Novel Approach to Estimate the Gap Between the Middle and Short-Term Plans, in: 35th APCOM symposium 2011 – Application of Computers and Operations Research in the Minerals Industry, 24-30 September 2011, University of Wollongong, WA, Australia.
  • Pérez, C., Ortiz, J.M., (2011) Mine-scale modeling of lithologies with multiple-point geostatistical simulation, in: Mathematical Geosciences at the crossroads of theory and practice, IAMG 2011, Salzburg, Sept. 5-9, 2011.
  • Saa, J., Ortiz, J.M., Magri, E.J., Emery, X., (2011) Inferring a representative distribution of soluble copper grade in the presence of a preferential sampling, in: Proceedings of the 2nd International Seminar on Geology for the Mining Industry, Geomin 2011, Beniscelli, J., Kuyvenhoven, R., Hoal, K.O. (Eds.), Santiago, Chile.
  • Pizarro, S., Ortiz, J.M., (2011) Stepwise Conditional Transformation of linearly transformed variables for multivariate geostatistical simulation, in: Proceedings of the 2nd International Seminar on Geology for the Mining Industry, Geomin 2011, Beniscelli, J., Kuyvenhoven, R., Hoal, K.O. (Eds.), Santiago, Chile.

2010:

  • Ortiz, J. M., Peredo, O., (2010) Multiple Point Geostatistical Simulation with Simulated Annealing: Implementation Using Speculative Parallel Computing, in geoENV VII – Geostatistics for Environmental Applications, Proceedings of the Seventh European Conference on Geostatistics for Environmental Applications, P. M. Atkinson, C. D., Lloyd (Eds.), Springer, Dordrecht, p. 383-394.
  • Magri, E.J., Ortiz, J.M., Líbano, R., (2010) The economic optimisation of advanced drilling grids for short term planning and grade control at El Tesoro Copper Mine, in: Proceedings of the 4th International Conference on Mining Innovation, MININ 2010, Castro, R., Emery, X., Kuyvenhoven, R. (Eds.), Santiago, Chile, p. 89-98.
  • Hurtado, S., Ortiz, J.M., (2010) Quantifying uncertainty in resources tonnage using multiple point geostatistical simulation, in: Proceedings of the 4th International Conference on Mining Innovation, MININ 2010, Castro, R., Emery, X., Kuyvenhoven, R. (Eds.), Santiago, Chile, p. 423-432.
  • Contreras, R.E., Ortiz, J.M., Bisso, C., (2010) Mine planning considering uncertainty in grades and work index, in: Proceedings of the 4th International Conference on Mining Innovation, MININ 2010, Castro, R., Emery, X., Kuyvenhoven, R. (Eds.), Santiago, Chile, p. 129-136.
  • Egaña, A.F., Ortiz, J.M., (2010) Image segmentation for mineral identification in oxide copper deposit, in: Proceedings of the 4th International Conference on Mining Innovation, MININ 2010, Castro, R., Emery, X., Kuyvenhoven, R. (Eds.), Santiago, Chile, p. 405-412.
  • Carmona, S., Ortiz, J.M., (2010) Geological modelling and metallurgical prediction supported by linear and non-linear statistics, in: Proceedings of the 4th International Conference on Mining Innovation, MININ 2010, Castro, R., Emery, X., Kuyvenhoven, R. (Eds.), Santiago, Chile, p. 459-470.
  • Cuba, M.A., Leuangthong, O., Ortiz, J.M., (2010) Adding flexibility to support vector classification for modelling categorical variables, in: Proceedings of the 4th International Conference on Mining Innovation, MININ 2010, Castro, R., Emery, X., Kuyvenhoven, R. (Eds.), Santiago, Chile, p. 479-489.
  • Sepúlveda, E., Ortiz, J.M., (2010) Distributed-multiprocess implementation of kriging for the estimation of mineral resources, in: Proceedings of the 4th International Conference on Mining Innovation, MININ 2010, Castro, R., Emery, X., Kuyvenhoven, R. (Eds.), Santiago, Chile, p. 433-442.
  • Parra, A., Ortiz, J.M., (2010) Multiple-point conditional unilateral simulation for categorical variables, in: Proceedings of the 4th International Conference on Mining Innovation, MININ 2010, Castro, R., Emery, X., Kuyvenhoven, R. (Eds.), Santiago, Chile, p. 413-422.

2009:

  • Parra, A., and Ortiz, J. M., (2009) Conditional multiple-point simulation with a texture synthesis algorithm, Computational Methods for the Earth, Energy and Environmental Sciences, IAMG 2009, August 23-28, Stanford University, USA, Electronic Conference Proceedings (ISBN# 978-0-615-33449-3).

2008:

  • Emery, X., Ortiz, J. M., and Cáceres, A. M., (2008) Geostatistical modeling of rock type domains with spatially varying proportions: Application to a porphyry copper deposit, Journal of the South African Institute of Mining and Metallurgy (ISI), 108(5): 285-292.
  • Boisvert, J. B., Leuangthong, O., Ortiz, J. M., and Deutsch, C. V., (2008) A methodology to construct training images for vein type deposits, Computers & Geosciences (ISI), 34(5): 491-502.
  • Machuca-Mory, D. F., Ortiz, J. M., Deutsch, C. V., (2008) On the challenge of using sequential indicator simulation for the estimation of recoverable reserves, International Journal of Mining, Reclamation and Environment, 22(4): 285-299.
  • Boisvert, J., Ortiz, J. M., and Deutsch, C. V., (2008) Local Recoverable Reserves Prediction with Block LU Simulation, International Journal of Mining and Mineral Engineering, 1(1): 3-21.
  • Geostats 2008 – Proceedings of the Eighth International Geostatistics Congress, Ortiz, J. M., and Emery, X., editors, Quebecor World Chile, Santiago, Chile, December 2008, vols. 1-2, 1188 p.
  • Ortiz, J. M., (2008) An Overview of the Challenges of Multiple-Point Geostatistics, in Geostats 2008 – Proceedings of the Eighth International Geostatistics Congress, J.M. Ortiz and X. Emery (eds.), Quebecor World Chile, Santiago, Chile, vol. 1, p. 11-20.
  • Hong, S., Ortiz, J. M., Deutsch, C. V., (2008) Multivariate density estimation as an alternative to probabilistic combination schemes for data integration, in Geostats 2008 – Proceedings of the Eighth International Geostatistics Congress, J.M. Ortiz and X. Emery (eds.), Quebecor World Chile, Santiago, Chile, vol. 1, p. 197-206.
  • Cuba, M., Ortiz, J. M., Leuangthong, O., (2008) Accounting for different sampling errors in exploration drilling campaigns in resource/reserve modelling, in Geostats 2008 – Proceedings of the Eighth International Geostatistics Congress, J.M. Ortiz and X. Emery (eds.), Quebecor World Chile, Santiago, Chile, vol. 2, p. 729-738.
  • Ortiz, J. M., Peredo, O., (2008) Multiple Point Geostatistical Simulation with Simulated Annealing: Implementation using Speculative Computing, 7th International Conference on Geostatistics for Environmental Applications, GeoENV 2008, 8th to 10th September 2008, Southampton, UK.
  • País, G., and Ortiz, J. M., (2008) Pattern recognition applied to resource evaluation: A conceptual study, in IIIrd International Conference on Mining Innovation MININ 2008. J. Arias, R. Castro, T. Golosinski (eds.), Gecamin Ltda, Santiago, Chile, p. 45-55.
  • Ortiz, J. M., Sepúlveda, E., Barberán, A., Emery, X., and Magri, E., (2008) Innovations in software development for resource evaluation, in IIIrd International Conference on Mining Innovation MININ 2008. J. Arias, R. Castro, T. Golosinski (eds.), Gecamin Ltda, Santiago, Chile, p. 57-68.
  • Egaña, M., Arancibia, E., Villegas, F., and Ortiz, J. M., (2008) Geostatistics applied to geotechnical parameters, in IIIrd International Conference on Mining Innovation MININ 2008. J. Arias, R. Castro, T. Golosinski (eds.), Gecamin Ltda, Santiago, Chile, p. 137-146.

2007:

  • Emery, X. and Ortiz, J. M., (2007) Weighted sample variograms as a tool to better assess the spatial variability of soil properties, Geoderma (ISI), 140(1-2): 81-89.
  • Ortiz, J. M., Lyster, S., and Deutsch, C. V., (2007) Scaling multiple-point statistics to different univariate proportions, Computers & Geosciences (ISI), 33(2): 191-201.
  • Deutsch, C. V., Leuangthong, O., and Ortiz, J. M., (2007) Case for geometric criteria in resources and reserves classification, Society for Mining, Metallurgy, and Exploration (SME), 2007 Transactions, 322: 1-11.
  • Ortiz, J. M., Rubio, E., Yarmuch, J. L., (2007) An Optimization Algorithm to Assess Different Resource Models for Open Pit Short Term Planning, in Proceedings of the Sixteenth International Symposium on Mine Planning and Equipment Selection, MPES 2007, R. K. Singhal, K. Fytas, S. Jongsiri, and H. Ge (Eds.), pp. 721-732.
  • Ortiz, J. M., and Leuangthong, O., (2007) A practical approach to validate the variogram reproduction from geostatistical simulation, in: 33rd International Symposium on Applications of Computers and Operations Research in the Mineral Industry APCOM 2007. E. J. Magri (ed.), Santiago, Chile, p. 121-127.
  • Emery, X., and Ortiz, J. M., (2007) Conditional simulation as a tool for assessing mining selectivity, in: 33rd International Symposium on Applications of Computers and Operations Research in the Mineral Industry APCOM 2007. E. J. Magri (ed.), Santiago, Chile, p. 79-85.
  • Robles, L., Ortiz, J. M., and Emery, X., (2007) Geostatistical simulation of mineral grades in the presence of spatial trends, in: 33rd International Symposium on Applications of Computers and Operations Research in the Mineral Industry APCOM 2007. E. J. Magri (ed.), Santiago, Chile, p. 87-93.

2006:

  • Ortiz, J. M., and Emery, X., (2006) Geostatistical estimation of mineral resources with soft boundaries: a comparative study, Journal of the South African Institute of Mining and Metallurgy (ISI), 106(8): 577-584.
  • Emery, X., Ortiz, J. M., and Rodríguez, J. J., (2006) Quantifying Uncertainty in Mineral Resources by Use of Classification Schemes and Conditional Simulation, Mathematical Geology (ISI), 38(4): 445-464.
  • Jara, R., Couble, A., Emery, X., Magri, E., and Ortiz J., (2006) Block size selection and its impact on open pit mine design and planning, Journal of the South African Institute of Mining and Metallurgy (ISI), 106(3): 205-211.
  • McLennan, J. A., Ortiz, J. M., and Deutsch, C. V., (2006) Geostatistical Simulation of Optimum Mining Elevations for Nickel Laterite Deposits, CIM Magazine (formerly CIM Bulletin), vol. 1, number 6, 8 p., Paper 22.
  • MININ 2006, Proceedings of the II International Conference on Mining Innovation, Ortiz, J. M., Guzmán, R., Rubio, E., Henríquez, F., and Lillo, P., editors, Impresos Socías Ltda., Santiago, Chile, May, 2006, 637 p.
  • Dussaubat, S., Vargas, X., and Ortiz, J., (2006) Evaluación de la incertidumbre en la variabilidad espacial de la precipitación usando un modelamiento multiGaussiano, 5th World FRIEND Conference, La Habana, Cuba, December, 2006.
  • Ortiz, J. M., (2006) Multivariate p-field simulation, XIth International Congress for Mathematical Geology (IAMG 2006 conference), Liege, Belgium, September 3-8, 2006.
  • Caumon, G., Ortiz, J. M., and Rabeau, O., (2006) A comparative study of three data-driven Mineral Potential Mapping techniques, XIth International Congress for Mathematical Geology (IAMG 2006 conference), Liege, Belgium, September 3-8, 2006.
  • Ortiz, J. M., and Caumon, G., (2006) Multivariate geostatistical and GIS methods for mineral exploration, MININ 2006, II International Conference on Mining Innovation, Santiago, Chile – May 23-26, 2006.

2005:

  • Emery, X., and Ortiz, J. M., (2005) Estimation of mineral resources using grade domains: critical analysis and a suggested methodology, Journal of the South African Institute of Mining and Metallurgy (ISI), 105(4): 247-255.
  • Emery, X., and Ortiz, J. M., (2005) Histogram and Variogram Inference in the Multigaussian Model, Stochastic Environmental Research and Risk Assessment (ISI), 19(1): 48-58.
  • Emery, X., Bertini, J. P., and Ortiz, J. M., (2005) Resource and Reserve Evaluation in the Presence of Imprecise Data, CIM Bulletin, vol. 98, number 1089, 12 p.
  • Ortiz, J. M., (2005) Simulación geoestadística por campos de probabilidad para evaluación de reservas mineras, VII Jornadas de Ingeniería de Minas Buenos Aires, Argentina – November 15-17, 2005.
  • Dussaubat, S., Vargas, X., and Ortiz, J., (2005) Estimación de la variabilidad espacial de eventos de precipitación usando métodos geoestadísticos, XVII Congreso Chileno de Hidráulica, October 5-7, 2005.
  • Leuangthong, O., Ortiz, J. M., and Deutsch, C. V., (2005) On the Scaling and Use of Multivariate Distributions in Geostatistical Simulation, 2005 Annual Conference of the International Association of Mathematical Geology (IAMG) – GIS and Spatial Analysis, Toronto, Canada, 6 p., August 21-26, 2005.
  • Ortiz, J. M., and Emery, X., (2005) Integrating Multiple-Point Statistics into Sequential Simulation Algorithms, in Geostatistics Banff 2004, proceedings of the Seventh International Geostatistics Congress, Leuangthong, O., and Deutsch, C. V., eds., volume 2, p. 969-978, Springer, 2005.
  • Emery, X., and Ortiz, J. M., (2005) Internal Consistency and Inference of Change-of-support isofactorial Models, in Geostatistics Banff 2004, proceedings of the Seventh International Geostatistics Congress, Leuangthong, O., and Deutsch, C. V., eds., volume 2, p. 1057-1066, Springer, 2005.
  • Ortiz, J. M., Oz, B., and Deutsch, C. V., (2005) A Step by Step Guide to Bi-Gaussian Disjunctive Kriging, in Geostatistics Banff 2004, proceedings of the Seventh International Geostatistics Congress, Leuangthong, O., and Deutsch, C. V., eds., volume 2, p. 1097-1102, Springer, 2005.

2004:

  • Ortiz, J. M., and Deutsch, C. V., (2004) Indicator Simulation Accounting for Multiple-Point Statistics, Mathematical Geology (ISI), 36(5): 545-565.
  • Emery, X., and Ortiz, J. M., (2004) Shortcomings of Multiple Indicator Kriging for Assessing Local Distributions, Applied Earth Science (Trans. Inst. Min. Metall. B), 113(4): 249-259.
  • MININ 2004, Proceedings of the 1st International Conference on Mining Innovation, Magri, E. J., Ortiz, J. M., Knights, P., Vera, M., Henríquez, F., and Barahona, C., editors, Santiago, Chile, August 2004, 640 p.
  • McLennan, J. A., Ortiz, J. M., and Deutsch, C. V., (2004) Geostatistical Simulation of Optimum Mining Elevations for Nickel Laterite Deposits, CIM Conference and Exhibition, Edmonton 2004, May 9 to 12, 10 p., 2004.
  • Ortiz, J. M., Leuangthong, O., and Deutsch, C. V., (2004) A MultiGaussian Approach to Assess Block Grade Uncertainty, CIM Conference and Exhibition, Edmonton 2004, May 9 to 12, 10 p., 2004.
  • Ortiz, J. M., and Emery, X., (2004) Categorizacion de Recursos y Reservas Mineras, in International Conference on Mining Innovation MININ 2004, Magri, E., et al., eds., p. 226-236, April 18 to 21, 2004.
  • Emery, X., Carrasco, P., and Ortiz, J., (2004) Modelamiento Geoestadístico de la Razón de Solubilidad en un Yacimiento de Oxidados de Cobre, in International Conference on Mining Innovation MININ 2004, Magri, E., et al., eds., p. 198-208, April 18 to 21, 2004.

2003:

  • Ortiz, J. M., (2003) Characterization of High Order Correlation for Enhanced Indicator Simulation, Ph. D. Thesis, University of Alberta, 284 p.

2002:

  • Ortiz C., J., and Deutsch, C. V., (2002) Calculation of Uncertainty in the Variogram, Mathematical Geology (ISI), 34(2): 169-183.
  • Ortiz, J., and Deutsch, C., (2002) Hierarchical Indicator Simulation, in Proceedings of 30th International Symposium of Applications of Computer and Operations Research in the Mineral Industry (APCOM), Bandopadhyay, S., ed.,  Phoenix, Arizona, p. 275-284, February 25-27, 2002.

2000:

  • Magri, E., and Ortiz, J., (2000) Estimation of Economic Losses due to Poor Blast Hole Sampling in Open Pits, in Geostatistics 2000, Proceedings of 6th International Geostatistics Congress, Kleingeld, W. J. and Krige, D. G., eds., Cape Town, South Africa, volume 2, p. 732-741, 10-14 April 2000.

1998:

  • Ortiz, J. M., (1998) Estimación de Pérdidas por Muestreo Deficiente en Pozos de Tronadura, Undergraduate (Mining Engineering) Thesis, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, 164 p.