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Cesar Astudillo

Assistant Professor

Universidad de Talca

Curico, Chile

Machine Learning, Pattern Recognition, Data Science, Statistical Analysis.

B.Sc. Engineering Sciences, Universidad de Concepción. Chile, 2002
Ph.D. in Computer Science, Carleton University. Chile, 2011
Computer Engineering, Universidad de Concepción. Chile, 2002

Assistant Professor Full Time

Universidad de Talca

Faculty of Engineering

Curicó, Chile

2003 - A la fecha
Research Assistant Full Time

Carleton University

Faculty of Science

Ottawa, Canada

2006 - 2010
Lecturer Part Time

CARLETON UNIVERSITY

Faculty of Science

Ottawa, Canada

2007 - 2008

Assistant Professor Full Time

Universidad de Talca

Curicó, Chile

2003 - A la fecha
Research Assistant Part Time

Carleton University

Ottawa, Canada

2006 - 2010
Instructor Part Time

Carleton University

Ottawa, Canada

2007 - 2008

Former Master's Students

Jorge Poblete, Magister Gestion de Operaciones (MGO), Universidad de Talca
Hernan Nuñez, Magister Gestion de Operaciones (MGO), Universidad de Talca
Jimmy Gutierrez, Magister Gestion de Operaciones (MGO), Universidad de Talca
Eduardo Zapata, Magister Gestion de Operaciones (MGO), Universidad de Talca

Former Undergraduate Students

Camila Gonzalez, Ingenieria Civil Industrial (ICC), Universidad de Talca
Diego Aldana, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Sebastian Farias, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Victor Ayala, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Javier Aros, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Javier Gonzalez, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Marianela Iturriaga, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Gonzalo Maldonado, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Carolina Fuentes, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Alexis Villalobos, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Liliana Barros, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Franzel Madariaga, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Hector Rojas, Ingenieria Civil en Computacion (ICC), Universidad de Talca
Mario Sanhueza, Ingenieria Civil en Computacion (ICC), Universidad de Talca

Best Paper Award

MONASH UNIVERSITY

Australia, 2009

Best Paper Award, 22nd Australian Joint Conference on Artificial Intelligence (AI09), Australia, 2009
Awarded departmental scholarship

CARLETON UNIVERSITY

Canada, 2006

Awarded departmental scholarship, Carleton University, Canada 2006-2009.
Awarded Exchange Internship

UNIVERSIDAD AUTONOMA DE NUEVA LEON

México, 2001

Awarded Exchange Internship, Universidad Autónoma de Nuevo León, Mexico, 2001.


Ensemble Approach Using k-Partitioned Isolation Forests for the Detection of Stock Market Manipulation Delafuente, Hugo Nunez; Astudillo, Cesar A.; Diaz, David Article ISI MATHEMATICS (2024)
Enhancing Schizophrenia Prediction Using Class Balancing and SHAP Explainability Techniques on EEG Data Arias, Javiera T.; Astudillo, Cesar A.; IEEE Article ISI 2023 IEEE 13TH INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION SYSTEMS, ICPRS (2023)
Evolution of physico-chemical parameters, microorganism diversity and volatile organic compound of apple pomace exposed to ambient conditions Hernandez, D.; Zambra, C.; Astudillo, C. A.; Gabriel, D.; Diaz, J. Article ISI HELIYON (2023)
ML models for severity classification and length-of-stay forecasting in emergency units Moya-Carvajal, Jonathan; Perez-Galarce, Francisco; Taramasco, Carla; Astudillo, Cesar A.; Candia-Vejar, Alfredo Article ISI EXPERT SYSTEMS WITH APPLICATIONS (2023)
PFA-Nipals: An Unsupervised Principal Feature Selection Based on Nonlinear Estimation by Iterative Partial Least Squares Castillo-Ibarra, Emilio; Alsina, Marco A.; Astudillo, Cesar A.; Fuenzalida-Henriquez, Ignacio Article ISI MATHEMATICS (2023)
Semi-supervised learning for MALDI-TOF mass spectrometry data classification: an application in the salmon industry Gonzalez, Camila; Astudillo, Cesar A.; Lopez-Cortes, Xaviera A.; Maldonado, Sebastian Article ISI NEURAL COMPUTING & APPLICATIONS (2023)
A Novel Strategy to Classify Chronic Patients at Risk: A Hybrid Machine Learning Approach Silva-Aravena, Fabian; Delafuente, Hugo Nunez; Astudillo, Cesar A. Article ISI MATHEMATICS (2022)
Challenges for a Massive Implementation of Phenomics in Plant Breeding Programs Lobos, Gustavo A.; Estrada, Félix; del Pozo, Alejandro; Romero-Bravo, Sebastián; Astudillo, Cesar A.; Mora-Poblete, Freddy Article SCOPUS Methods in molecular biology (Clifton, N.J.) (2022)
Optimizing the search directions of a mixed DDM applied on cracks Fuenzalida-Henriquez, Ignacio; Hinojosa, Jorge; Pena, Larry; Astudillo, Cesar Article ISI OPTIMIZATION AND ENGINEERING (2022)
Patients' Prioritization on Surgical Waiting Lists: A Decision Support System Silva-Aravena, Fabian; Alvarez-Miranda, Eduardo; Astudillo, Cesar A.; Gonzalez-Martinez, Luis; Ledezma, Jose G. Article ISI MATHEMATICS (2021)
Semi-supervised learning for MS MALDI-TOF data Lopez-Cortes, Xaviera A.; Astudillo, Cesar A.; Gonzalez, Camila; Maldonado, Sebastian; IEEE Article ISI 2021 IEEE LATIN AMERICAN CONFERENCE ON COMPUTATIONAL INTELLIGENCE (LA-CCI) (2021)
Towards an Integrated Maturity Model of System and E-Business Applications in an Emerging Economy Alejandro Cataldo; César A. Astudillo; Jimmy H. Gutiérrez-Bahamondes; Luis González-Martínez; Robert McQueen Article ISI SCIELO SCOPUS JOURNAL OF THEORETICAL AND APPLIED ELECTRONIC COMMERCE RESEARCH (2020)
Data for resistance and inductance estimation within a voltage source inverter Aldana, Diego; Salgueiro, Yamisleydi; Bellinger, Colin; Rivera, Marco; Astudillo, César A. Article WOS-ESCI SCOPUS Data in Brief (2019)
Algorithms for the Minmax Regret Path problem with interval data Pérez-Galarce, Francisco; Candia-Véjar, Alfredo; Astudillo, César; Bardeen, Matthew Article ISI SCOPUS INFORMATION SCIENCES (2018)
CHARACTERIZING THE EVOLUTION OF SEDIMENT-LIKE WASTES EXPOSED TO AMBIENT CONDITIONS IN OPEN RESERVOIRS Hernandez, D; Astudillo, CA; Fernandez-Palacios, E; Cataldo, F; Tenreiro, C; Gabriel, D Article ISI REVISTA INTERNACIONAL DE CONTAMINACION AMBIENTAL (2018)
Evolution of physical-chemical parameters, microbial diversity and VOC emissions of olive oil mill waste exposed to ambient conditions in open reservoirs Hernández, D.; Astudillo, C.A.; Fernández-Palacios, E.; Cataldo, F.; Tenreiro, C.; Gabriel, D. Article ISI SCOPUS Waste Management (2018)
Assessing Wheat Traits by Spectral Reflectance: Do We Really Need to Focus on Predicted Trait-Values or Directly Identify the Elite Genotypes Group? Garriga, Miguel; Romero-Bravo, Sebasti?n; Estrada, F?lix; Escobar, Alejandro; Matus, Iv?n A.; del Pozo, Alejandro; Astudillo, Cesar A.; Lobos, Gustavo A. Article ISI SCOPUS FRONTIERS IN PLANT SCIENCE (2017)
Predicting the stability of human lysozyme mutants using the tree-based classifier TTOSOM Maldonado, Gonzalo; Astudillo, C?sar A.; Riadi, Gonzalo; Caballero, Julio Article ISI SCOPUS CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS (2017)
Evaluating different families of prediction methods for estimating software project outcomes Cerpa, N; Bardeen M.; Astudillo, CA; Verner J. Article ISI SCOPUS JOURNAL OF SYSTEMS AND SOFTWARE (2016)
The multiple team formation problem using sociometry Gutiérrez J.H.; Astudillo, C.A.; Ballesteros-Pérez P.; Mora-Melià D.; Candia-Vejar, A Article ISI SCOPUS COMPUTERS & OPERATIONS RESEARCH (2016)
Pattern Recognition Using The TTOCONROT César A. Astudillo and B. John Oommen. Article LNCS (2015)
Editorial: Data Mining in Electronic Commerce - Support vs. Confidence Astudillo, César; Bardeen, Matthew; Cerpa, Narciso. Article SCIELO JOURNAL OF THEORETICAL AND APPLIED ELECTRONIC COMMERCE RESEARCH (2014)
Fast BMU search in SOMs using random hyperplane trees Astudillo C.E.; John Oommen B. Article SCOPUS BIO-INSPIRED SYSTEMS AND APPLICATIONS: FROM ROBOTICS TO AMBIENT INTELLIGENCE, PT II (2014)
Self-organizing maps whose topologies can be learned with adaptive binary search trees using conditional rotations Astudillo, CA; Oommen, BJ Article ISI SCOPUS PATTERN RECOGNITION (2014)
Topology-oriented self-organizing maps: a survey Astudillo, César A.; Oommen, B. John. Article ISI SCOPUS PATTERN ANALYSIS AND APPLICATIONS (2014)
On achieving semi-supervised pattern recognition by utilizing tree-based SOMs Astudillo, CA; Oommen, BJ Article ISI SCOPUS PATTERN RECOGNITION (2013)
Imposing tree-based topologies onto self organizing maps Astudillo, CA; Oommen, BJ Article ISI SCOPUS INFORMATION SCIENCES (2011)
Semi-supervised classification using tree-based self-organizing maps César Astudillo; B. John Oommen Article LNCS (2011)
A novel self organizing map which utilizes imposed tree-based topologies Astudillo, C.A.; Oommen J.B. Article SCOPUS Advances in Intelligent and Soft Computing (2009)
On using adaptive Binary Search Trees to enhance self organizing maps César Astudillo; B. John Oommen Article LNCS (2009)


Predicting air quality using deep learning in Talca city, Chile Astudillo C.A.; GonzÃ¡lez-MartÃnez L.; Zapata-GonzÃ¡lez E. ConferencePaper SCOPUS IET Conference Publications (2019)
Pattern Recognition using the TTOCONROT Astudillo, CA; Oommen, BJ ConferencePaper ISI SCOPUS Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (2015)
Metric Space Searching Based on Random Bisectors and Binary Fingerprints Andrade, JM; Astudillo, CA; Paredes, R. ConferencePaper ISI SCOPUS BIO-INSPIRED SYSTEMS AND APPLICATIONS: FROM ROBOTICS TO AMBIENT INTELLIGENCE, PT II (2014)
Semi-supervised classification using tree-based self-organizing maps Astudillo, C.A.; Oommen B.J. ConferencePaper BIO-INSPIRED SYSTEMS AND APPLICATIONS: FROM ROBOTICS TO AMBIENT INTELLIGENCE, PT II (2011)
Using semantic similarity to predict angle and distance of objects in images Somers S.; GagnÃ© J.; Astudillo, C.; Davies, J ConferencePaper SCOPUS C and C 2011 - Proceedings of the 8th ACM Conference on Creativity and Cognition (2011)
On using adaptive Binary Search Trees to enhance self organizing maps Astudillo, C.A.; Oommen B.J. ConferencePaper BIO-INSPIRED SYSTEMS AND APPLICATIONS: FROM ROBOTICS TO AMBIENT INTELLIGENCE, PT II (2009)
A Novel Self Organizing Map Which Utilizes Imposed Tree-based Topologies. Astudillo, César A.; Oommen, B. John. ConferencePaper


Concept Drift Detection Using Online Bayesian Classifier. Astudillo, César A.; Gonzalez, Javier I. ConferenceProceedingWhole (2013)
Using semantic similarity to predict angle and distance of objects in images. Somers, Sterling.; Gagné, Jonathan.; Astudillo, César A.; Davies, Jim. ConferenceProceedingWhole


On the data to know the prioritization and vulnerability of patients on surgical waiting lists Silva-Aravena F.; Álvarez-Miranda E.; Astudillo C.A.; González-Martínez L.; Ledezma J.G. Generic ISI SCOPUS Data in Brief (2020)


Sistema , dispositivo y método para la obtención de parámetros biométricos de un individuo mediante un dispositivo con sensores. Natalia Ibarra Cortés; Astudillo, CÉsar Alejandro; Gatica Rojas, Valeska Fabiola; LUIS EDUARDO GONZÁLEZ MARTÍNEZ; JORGE EDUARDO AYALA AVILÉS Patent (2024)
Dispositivos de deteccion, medicion o registro para probar la forma, patron, color, tamaño o movimiento del cuerpo o una parte para un diagnostico; con dispositivos y metodos sensores que pueden estimar el riesgo de caida; especificamente proporciona un sistema para la deteccion de problemas posturales y la perdida de equilibrio. ALEX EDUARDO SOTO POBLETE; MARIO ALBERTO FERNANDEZ FERNANDEZ; VALESKA FABIOLA GATICA ROJAS; NATALIA AUDORIZA IBARRA CORTES; DARIAN ROBINSON MARTINEZ DIAZ; Astudillo, CÉsar Alejandro; MARCO ANTONIO GONZALEZ NÚÑEZ Patent A61B5/00, A61B5/103, A61B5/11 (2022)


Transferencia Reducción de emisiones atmosféricas de MiPymes en zonas Saturadas Astudillo, C.A. Proyecto (2020)
Desarrollo de una Plataforma de Fenotipeo que permita bajar costos y acelerar la liberación de cultivares en los programas de mejoramiento genético FONDEF (14I20106) Proyecto 2018-2019 Investigador(a)
Desarrollo de una Plataforma de Fenotipeo que permita bajar costos y acelerar la liberación de cultivares en los programas de mejoramiento genético A. Lobos, Gustavo; Astudillo, César A. Proyecto (2018)
Tree-Based Pattern Recognition FONDECYT (11121350) Proyecto 2012-2015 Inv. Principal
Tree-Based Pattern Recognition Astudillo, César Proyecto (2012)
Becas Chile Astudillo, César A. Proyecto (0)


Traffic Sign Detection and Recognition Using YOLO Object Detection Algorithm: A Systematic Review Flores-Calero, Marco; Astudillo, Cesar A.; Guevara, Diego; Maza, Jessica; Lita, Bryan S.; Defaz, Bryan; Ante, Juan S.; Zabala-Blanco, David; Armingol Moreno, Jose Maria Review ISI MATHEMATICS (2024)