CURRICULUM VITAE

Contact Information

Full Name:	Pablo Enrique Román Asenjo
Affiliation:	Center for Mathematical Modeling
	University of Chile
	Institute of Complex Engineering Systems
	University of Chile
Address:	Almirante Latorre 498 Dpto 818
	Santiago Centro
	Chile
Telephone:	(56)-2-698-1976
E-mail:	proman@ing.uchile.cl
URL:	http://wi.dii.uchile.cl/
	http://www.dii.uchile.cl/$\sim$paroman

Personal Data

Nationality:	Chilean
Passport:	11479623-9
Visa Status:	B1/B2 Business valid: 24/09/2019
Marital Status:	Married
Children:	Two

Education

1994	BS	Physics	University of Chile
1999	BS	Computer	University of Chile
1999	Eng.	Computer	University of Chile
2011	Ph.D	Engineering Systems	University of Chile

Dissertation Adviser (Ph.D):	Juan D. Velásquez (jvelasquez@dii.uchile.cl)
Dissertation Title:	``Web User Behavior Analysis.''
Engineering Degree Adviser:	Eric Goles
Engineering Dissertation Title:	``Granular system simulation using cellular automata.''

Major research interest
Research keywords (Alphabetic): Astro-informatics, Data mining, Discrete choice analysis, Discrete optimization, High performance computing, Human behavior models, Machine learning, Massive data, Natural language processing, Neurocomputing, Numerical analysis of partial differential equation, Numerical algorithm, Physics: Quantum and diffusion system, Stochastic models, Stochastic optimization, Web usage mining.

In order to clarify my research directions, I first describe my area of expertise. I have a broad-spectrum background that ranges from fundamental physics science (B.S.Phy.), computer science (B.C.S, C. Eng.), complex system engineering (Ph.D.), and industrial engineering. I strongly believe that fruitful results emerge from multidisciplinary research interaction. With such a premise my research interests include various subjects, as follows. Modeling human behavior has been a concern for several disciplines (e.g. economics). My thesis develops a description of dynamic decision making for web users using basic first principles of neuroscience. I consider as a future research goal to adapt such a model to other human activities. Data preprocessing has always been an issue in science. For my thesis work it was necessary to ensure the processing of massive amounts of data from web logs. The most computationally complex part of this process is the reconstruction of individual activities. The proposed solution was an integer programming model, which solves in polynomial time (network flow problem) with much better accuracy than previous processing models. For my thesis work, I also had to analyze numerically higher dimensional partial differential diffusion equations. The method proposed was based on symbolic processing for the particular boundary condition. Further generalization of this numerical method has interest and applications in others areas.

Employment History (Research postdoc, Lectures, Assistantship, Engineering project, Internship)

• (2011) Postdoctoral assistant research, Center for Mathematical Modeling (CMM), Mathematical Engineering Department, University of Chile. Work in progress: Processing of interferometric new data (UVFITS) from ALMA radio observatory for image synthesis.
• (2006-2011) Research assistantship, Complex Engineering Systems Milenium Institute, Department of Industrial Engineering, University of Chile. Work in progress: Analysis of the web user.
• (2004-2011) Part-time Lecturer University of Chile, Department of Industrial Engineering. Academic Category: ``Instructor Professor'' Academic Evaluation (2005,2008,2011): Level 3 (GOOD). Courses:
  • IN4523-1 ``Data Warehousing''. 1 semester, 2011.
  • IN55A ``DISEÑO DE SISTEMAS DE INFORMACION ADMINISTRATIVOS'' (Administration Information System Design). 1 semester, 2006.
  • IN77J ``Orientación al Objeto Para un E-Business'' (Object Orientation For an E-business). 7 semesters, 2004-2007.
  • IN72J ``Arquitectura Tecnológica Para un E-Business'' (Technological Architecture for an e-business). 6 semesters, 2004-2006.
  • IN72K ``TECNOLOGIAS DE INFORMACION Y REDISEÑO DE PROCESOS'' (Information Technology and process redesign). 1 semester, 2006.
• Research assistanship, Gouvernement funding FONDEF project ``DOCODE'' (DOcument COpy DEtector). Professor Juan D. Velásquez.
• (2008) Engineering project, METRO S.A. (www.metro.cl): Development and implementation of an optimizing system for the management of sales service, second project phase.
• (2007) Engineering project, ENTEL Chile (www.entel.cl): Web Mining application for online customer service.
• (2006-2007) Engineering project, METRO S.A. (www.metro.cl): Development and implementation of an optimizing system for the management of sales service, first project phase.
• (2001-2006) Engineering project. Software Development and Chief Technology. ADI, University of Chile, Faculty of Physics and Mathematical Science. Projects: Online academic system development from scratch (U-Cursos, Encuesta Docente, Evaluacion Docente, Inscripcion Academica, Workflow.)
• (1999-2000) Engineering project. Software Development Engineer ISC Technology.
• (1998-1999) Research Assistanship. Gouvernement funding FONDAP project ``Simulation and Mathematical Modeling with sand pile.'' Prof. Eric Goles and Pablo Dartnell.
• (1997-1998) Internship for Computer Engineering: Banefe, Santander Bank, Santiago. Intranet implementation and design.
• (1996-1997) Internship for Computer Engineering: Banefe, Santander Bank, Santiago. Automatic code generator for Cobol.
• (1995) Teaching Assistantship for course "Classical Electrodynamics." Prof. Romualdo Tabensky Physics Department. University of Chile.
• (1994) Teaching Assistantship for course "Classical Mechanics." Prof. Romualdo Tabensky, Physics Department. University of Chile.
• (1992) Research Assistanship, ``Laboratory of Condensed Matter and Surfaces''. Physics Department, University of Chile. Prof. V. Fuenzalida
• (1991) Teaching Assistantship for course "Mechanic I". Prof. Jorge Zanelli Physics Department. University of Chile.

Publications

• (2011) (JOURNAL PAPER) Tomas Arce, Pablo E. Román, Víctor Parada, and Juan D. Velásquez, ``An approach to the web sessionization problem with simulated annealing,'' SUBMITTED TO Journal of Information Processing and Management.
• (2011) (CHAPTER BOOK SERIES) Pablo E. Román, and Juan D. Velásquez, ``Cognitive science in the study of web usage,'' TO APPEARS as Chapter 4 in ``Advances Techniques in Web Intelligence - 2,'' V. Palade, J.D. Velásquez, and L. Jain Eds.; Springer Verlag, 42 pages.
• (2011) (PROCEEDINGS PAPER) Pablo Loyola, Pablo E. Román, and Juan D. Velásquez, ``Clustering-Based Learning Approach for Ant Colony Optimization Model to Simulate Web User Behavior,'' 2011 IEEE / WIC / ACM Web Intelligence International Conference; 8 pages.
• (2011) (JOURNAL PAPER) Pablo E. Román, and Juan D. Velásquez, ``A neurology-inspired model of web usage,'' 40 pages, SUBMITTED TO Journal of Neurocomputing.
• (2011) (JOURNAL PAPER) Pablo Loyola, Pablo E. Román, and Juan D. Velásquez, ``Predicting Web User Behavior Using Learning-Based Ant Colony Optimization,'' 21 pages; Accepted TO APPEARS in Journal of Engineering Applications of Artificial Intelligence, 2012.
• (2011) (THESIS) Pablo E. Román, ``Web User Behavior Analysis,'' Thesis submitted in partial fulfillment for the degree of Doctor of Philosophy in Engineering Systems. University of Chile.
• (2011) (JOURNAL PAPER) Robert F. Dell, Pablo E. Román and Juan D. Velásquez, ``Optimization models for construction of web user sessions,'' 21 pages, 2012, SUBMITED TO Journal Intelligent Data Analysis (IDA), IOS Press.
• (2010) (CHAPTER BOOK SERIES) Pablo E. Román, Robert F. Dell and Juan D. Velásquez, ``Advanced Technique in Web Data Pre-Processing and Cleaning,'' Chapter in the book ``Advances Techniques in Web Intelligence-1,'' J.D. Velásquez and L. Jain Ed., Springer Verlag, 32 pages.
• (2010) (CHAPTER BOOK SERIES) Pablo E. Román, G. L’Huillier and Juan D. Velásquez; ``Web Usage Mining”; Chapter in book ``Advances in Techniques in Web Intelligence-1,'' J.D. Velásquez and L. Jain Ed., Springer Verlag, 24 pages.
• (2010) (PROCEEDINGS PAPER) Pablo E. Román and Juan D. Velásquez, ``Stochastic Simulation of Web Users,'' 2010 IEEE / WIC / ACM Web Intelligence International Conference. 4 pages. With oral presentation by Pablo E. Román.
• (2010) (WORKSHOP PRESENTATION PAPER) Pablo E. Román and Juan D. Velásquez, ``The Time Course of the Web User,'' Procs. Of the Second Workshop on Time Use Observatory (TUO2), Chillan, Chile. With oral presentation by Pablo E. Román.
• (2010) (WORKSHOP PRESENTATION PAPER) Pablo E. Román and Juan D. Velásquez, ``Artificial Web User Simulation and Web Usage Mining,'' 2010, Procs. Of the First Workshop in Business Analytics and Optimization (BAO 2010), Santiago, Chile. With oral presentation by Pablo E. Román.
• (2010) (WORKSHOP PRESENTATION PAPER) E. Andaur, S. Rios, Pablo E. Román and Juan D. Velásquez, ``Best Web Site Structure for Users Based on a Genetic Algorithm Approach,'' 2010, Procs. Of the First Workshop in Business Analytics and Optimization (BAO), Santiago, Chile. Eng. Degree of E. Andaur with Co-Guidance by Pablo E. Román.
• (2010) (WORKSHOP PRESENTATION PAPER) Pablo Loyola, Pablo E. Román and Juan D. Velásquez, ``Ant Colony Surfer: Discovering the Distribution of Text Preferences from Web Usage,'' In Procs. Of the First Workshop in Business Analytics and Optimization (BAO), Santiago, Chile. Eng. Degree of P. Loyola with Co-Guidance by Pablo E. Román.
• (2009) (AAAI TECHNICAL PAPER) Pablo E. Román and Juan D. Velásquez, ``Analysis of Web User Behavior with a Psychologically-Based Diffusion Model,'' Procs. Of the AAAI 2009 Fall Symposium on Biologically Inspired Cognitive Architectures (BICA), Arlington, USA. With oral presentation by Pablo E. Román.
• (2009) (PROCEEDINGS PAPER LNAI 5711) Robert F. Dell, Pablo E. Román and Juan D. Velásquez, ``Web User Session Reconstruction with Back Button Browsing,'' Lecture Note in Computer Science, LNAI 5711. Procs. Of the 13th International Conference on Knowledge-Based and Intelligent Information & Engineering Systems, KES 2009, Santiago, Chile. Page 326-332. With oral presentation by Pablo E. Román.
• (2009) (PROCEEDING-BOOK SERIE-PAPER-INVITED LECTURE) Pablo E. Román and Juan D. Velásquez, ``A Dynamic Stochastic Model Applied to the Analysis of the Web User Behaviour,'' Invited Lecture. Advances intelligent And Soft Computing Vol. 67 Of the 6th Atlantic Web Intelligence Conference, AWIC 2009, Springer Verlag, Prague, Czech Republic. With oral presentation by Pablo E. Román. Page 31-39.
• (2009) (NATIONAL MAGAZINE) Robert F. Dell, Pablo E. Román and Juan D. Velásquez; ``Un método de optimización lineal entera para el análisis de sesiones de usuarios web,'' p. 22; CHILE; 2009; Revista de Ingenieria de Sistemas; Vol. 23.
• (2009) (SYMPOSIUM PAPER) Robert F. Dell, Pablo E. Román and Juan D. Velásquez, ``Fast Combinatorial Algorithm for Web User Session Reconstruction,'' p. 2; 2009; Procs. Of the 24th IFIP TC7 Conference, Buenos Aires, Argentina. Page 91-92. With oral presentation by Pablo E. Román.
• (2009) (SYMPOSIUM PAPER) Robert F. Dell, Pablo E. Román and Juan D. Velásquez, ``Optimization Models for Construction and Analysis of Web User Sessions,'' p. 1; 2009; Procs. 11th Informs Computing Society Conference, Charleston, South Carolina, USA.
• (2008) (PROCEEDINGS PAPER) Robert F. Dell, Pablo E. Román and Juan D. Velásquez, ``Web User Session Reconstruction Using Integer Programming,'' p. 4; 2008; Procs. of The 2008 IEEE/WIC/ACM International Conference on Web Intelligence, Sydney, Australia, with oral presentation by Pablo E. Román.
• (2008) (SYMPOSIUM PAPER) Robert F. Dell, Pablo E. Román and Juan D. Velásquez, ``Identifying Web User Session using an Integer programming Approach,'' p. 3, Procs. Of The XIV Latin Ibero-American Congress on Operations Research (CLAIO 2008), Cartagena, Colombia. With oral presentation by Pablo E. Román.
• (2008) (SYMPOSIUM PAPER) Pablo E. Román and Juan D. Velásquez, ``Markov Chain for modelling the Web User Behaviour,'' p. 3; Procs. Of The XIV Latin Ibero-American Congress on Operations Research (CLAIO 2008), Cartagena, Colombia. With oral presentation by Pablo E. Román.
• (2006) (SYMPOSIUM PAPER) Pablo E. Román and Juan D. Velásquez, ``Improving a Web Site using Keywords,'' p. 6, Procs. XIII Congreso Latino-Iberoamericano de Investigacion Operativa CLAIO 2006, Montevideo, Uruguay. With oral presentation by Pablo E. Román.
• (1999) (THESIS) Pablo E. Román, ``Granular system simulation using cellular automata,'' document submitted in partial fulfillment for the degree of Computer Engineer and Bachelor in Computer Science, Advisor Eric Goles, Pablo Dartnel, and José M. Piquer.
• (1992) (SYMPOSIUM PAPER) Pablo E. Román, Ivan Piñeiro and Víctor Fuenzalida, ``Barium thin film incorporation at titanium substrate,'' p. 11, Proceedings of VIII Chilean Physics workshop, Num.127, Vol. 1, SOCHIFI-Scientia, Valparaiso, Chile. With oral presentation by Pablo E. Román.

Grants and Awards

(2010) Doctoral full support scholarship from the Institute of Complex Engineering System.
(http://www.sistemasdeingenieria.cl), Chile. March-Dec.

(2008-2009) Doctoral full support scholarship from the Chilean government. Conicyt
(www.conicyt.cl), Chile.

(2007) Doctoral support scholarship, Millenium Institute Engineering Complex Systems.

(2006) Faculty full support doctoral scholarship. University of Chile.

Thesis and Engineering Guidance

(2011) ``Supporting member,'' Tomas Arce, Informatic Engineering disertation. ``Estudio del problema de sesionización, utilizando simulated annealing y algoritmos genéticos,'' University of Santiago Chile.

(2011) ``Profesor Co-Guia,'' (co-advisor) Pablo S. Loyola, Industrial Engineering disertation. ``Análisis del comportamiento del usuario web a partir de la simulación de su navegación usando optimización de colonias de hormigas,'' University of Chile.

(2010) ``Profesor Integrante,'' (member of the comission) Pablo Acuña, Thesis Master MGO. ``Adaptación de una Herramienta Crm Open Source para Mypymes del Sector Financiero,'' University of Chile.

(2010) ``Profesor Integrante,'' (member of the comission) Rodrigo Zarate Rodrígez, Thesis Master MGO. ``Diseño y desarrollo de un algoritmo de detección de patrones de copia en documentos digitales,'' University of Chile.

(2010) ``Profesor Integrante,'' (member of the comission) Victor Rebolledo, Thesis Master MGO. ``Plataforma para la Extracción y Almacenamiento del Conocimiento Extraído de los Web Data,'' University of Chile.

(2009) ``Profesor Integrante,'' (member of the comission) Robert Cercos, Industrial Engineering dissertation. ``Diseño y Construcción de un Web Warehouse para Almacenar Información Extraída a Partir de Datos Originados en la Web'', University of Chile.

(2008) ``Profesor Integrante,'' (member of the comission) Lucía Hernandez, Thesis Master MGO. ``Diseño y Construccion de un Data Mart para la Mantención de Indicadores de Sostenibilidad de la Industria del Salmón,'' University of Chile.

Journal and Committee Reviews

(2011) Member of the Program Committee of BICA AAAI conference 2011
(http://bicasociety.org/2011/).

(2011) Reviewer for Revista del Instituto Chileno de Investigación Operativa (ICHIO) 2010-2011.

(2010-2011) Reviewer for Journal of Engineering Applications of Artificial Intelligence, Elsevier.

(2010-2011) Reviewer for Journal of Mathematical and Computer Modeling, Elsevier.