Alejandro Figueroa Amenábar

Ph.D. Linguística Computacional de la Universitaet des Saarlandes

Cargo: Profesor Investigador

Líneas de Investigación e intereses:

  • Procesamiento de Lenguaje Natural
  • Algoritmos para procesar colecciones grandes de datos
  • Recuperación de Información
  • Minería de Datos
  • Sistemas de Preguntas y Respuestas

Contacto: alejandro.figueroa@unab.cl


Pregrado:

  • Algoritmos y Estructuras de Datos.
  • Sistemas Inteligentes

Postgrado

  • Big Data: Análisis y Procesamiento de Grandes Volumenes de Datos.
  • Recuperación de Información y Procesamiento de Lenguaje Natural.

Pregrado

  • Nicolás Olivares – “Detección Automática de las dimensiones de las personalidad en comunidades pregunta-respuesta” (Automatically Detecting the Big Five across Community Question-Answering Members), undergraduate thesis at University Diego Portales, Santiago, Chile, January, 2017.
  • Ignacio Herrera – “Aprendizaje Semi-Supervisado de Múltiples Vistas para Detectar Temporalidad de Preguntas” (Multi-view Semi-Supervised Learning for Detecting Temporally Anchored Questions), undergraduate thesis at University Diego Portales, Santiago, Chile, August, 2016.
  • Daniel Palomera – “Aprendizaje semi-supervisado para detección automática de respuestas informacionales a preguntas procedurales en cQA” (Semi-supervised learning for recognizing informational answers to how-to questions across cQA), undergraduate thesis at University Andres Bello, Santiago, Chile, December, 2015.

Publicaciones ISI

  • A. Espina, A. Figueroa “Why was this Asked? Automatically Recognizing Multiples Motivations behind Community Question-Answering Questions”, in Journal of Expert Systems with Applications, Volume 77, pp. 11–19, September 2017.
  • A. Figueroa “Automatically Generating Effective Search Queries Directly from Community Question-Answering Questions for Finding Related Questions”, in Journal of Expert Systems with Applications, Volume 80, pp. 126–135, July 2017.
  • D. Palomera, A. Figueroa “Leveraging Linguistic Traits and Semi-Supervised Learning to Single Out Informational Content across How-to Community Question-Answering Archives”, in Journal of Information Sciences, in press, 2017.
  • A. Figueroa, J. Atkinson “Ensembling Classifiers for Detecting Users’ Intentions behind Web Queries” IEEE Internet Computing, Volume 20, Issue 2, pp. 8–16, March/April, 2016.
  • A. Figueroa, C. Gómez-Pantoja, I. Herrera “Search clicks analysis for discovering temporally anchored questions in community Question Answering”, in Journal of Expert Systems With Applications, Volume 50, 89–99, 2016.
  • A. Figueroa, G. Neumann “Context-Aware Semantic Classification of Search Queries for Browsing Community Question-Answering Archives”, in Journal of Knowledge-Based Systems, Volume 96, pp. 1–13, 2016.
  • J. Atkinson, A. Figueroa, G. Salas, “Improving Opinion Retrieval in Social Media by Combining Features-based Coreferencing and Memory-based Learning”, in Journal of Information Sciences, Volume 299, pp. 20–31, 2015.
  • A. Figueroa “Exploring Effective Linguistic-based Features for Recognizing the User Intent behind Web Queries”, in Journal of Computers in Industry, volume 68, pp. 162–169, 2015.
  • A. Figueroa, G. Neumann “Category-specific Models for Ranking Effective Paraphrases in Community Question Answering”, Journal of Expert Systems with Applications, Volume 41, Issue 10, August 2014, Pages 4730–4742.
  • J. Atkinson, A. Figueroa, C. Andrade “Evolutionary Optimization for Ranking How-to Questions based on User-Generated Contents”, in Journal of Expert Systems With Applications”, vol. 40, number 17, pp. 7060-7068, 2013.
  • J. Atkinson, A. Figueroa, C. Perez “A Semantically-based Lattice Approach for Assessing Patterns in Text Mining Tasks”, in Journal of Computación y Sistemas”, Vol. 17, Number 4, pp. 467–476, 2013.
  • A. Figueroa, J. Atkinson “Contextual Language Models for Ranking Answers to Natural Language Definition Questions”. In Computational Intelligence”, Volume 28, Number 4, pp. 528-548, 2012.
  • A. Figueroa, J. Atkinson “Intelligent answering location questions from the web using molecular alignment”.
    In Journal of Intelligent Information Systems”, vol. 35, number 1, pp. 75-90, 2010.
  • A. Figueroa, J. Atkinson, G. Neumann “Searching for Definitions Answers on the Web using Surface Patterns”. In IEEE Computer”, vol. 42, no. 4, pp. 68-76, Apr. 2009, doi:10.1109/MC.2009.129.
  • A. Figueroa, G. Neumann “Genetic Algorithms for data-driven Web Question Answering”. In Journal of Evolutionary Computation”, Spring 2008, Vol. 16, No. 1, Pages 89-125.

Otras (incluye capítulos de libros)

  • A. Figueroa, “Finding Answers to Definition Questions on the Web: Discovering Biographical Information across the Web”, Ph.D. dissertation, Book: ISBN 978-3639303865, Nov. 2010.

Abstracts en conferencias

  • F. Ramírez, H. Contreras, A. Figueroa, M. Palma “Gestión de Contactabilidad en Email para Mejorar la Experiencia de Usuario en la Industria Financiera”, in 11vo Seminario Internacional Big Data, Santiago, Chile, 2015.
  • A. Figueroa, G. Neumann “Learning to Rank Effective Paraphrases from QueryLogs for Community Question Answering”. In AAAI 2013, 14 – 18 July, 2013, Bellevue, Washington, USA.
  • A. Figueroa, G. Neumann “Exploiting User Search Sessions for Categorizing Questions”, in IJCNLP 2013, pp. 902–906, October, Nagoya, Japan, 2013.
  • A. Eiselt, A. Figueroa “A Two-Step Named Entity Recognizer for Search Queries”, in IJCNLP 2013, pp. 829–833, October, Nagoya, Japan, 2013.
  • A. Figueroa “Can Click Patterns across User’s Query Logs Predict Answers to Definition Questions?”. In EACL, pp. 99–108, 23 – 27 April, 2012, Avignon, France.
  • A. Figueroa, J. Atkinson “Maximum Entropy Context Models for Ranking Biographical Answers to Open-Domain Definition Questions”. In AAAI, pp. 1173-1179, 7 – 11 August, 2011, San Francisco, California, USA.
  • A. Figueroa “Surface Language Models for DiscoveringTemporally Anchored Definitions on The Web: Producing Chronologies as Answers to Definition Questions”. In WEBIST 2010: 6th International Conference on Web Information Systems and Technologies, pp. 269-275, 7 – 10 April, 2010, Valencia, Spain.
  • A. Figueroa, J. Atkinson “Answering Definition Questions: Dealing with Data Sparseness in Lexicalised Dependency Trees-based Language Models”. In Lecture Notes in Business Information Processing, vol. 45, pp. 297-310, 2010.
  • A. Figueroa, J. Atkinson “Using Dependency Paths For Answering Definition Questions on The Web”. In WEBIST 2009: 5th International Conference on Web Information Systems and Technologies, pp. 643-650, 23 – 26 March, 2009, Lisbon, Portugal.
  • A. Figueroa “Are Wikipedia Resources Useful for Discovering Answers to List Questions within Web Snippets?”. In Lecture Notes in Business Information Processing, Volume 18, p. 174-185, 2009. ISBN: 978-3-642-01343-0.
  • A. Figueroa “Finding Answers to Definition Questions across the Spanish Web”. In 18th International World Wide Web Conference, 20-24 April 2009, Madrid. Track: WWW in Ibero-America Alternative track.
  • A. Figueroa, G. Neumann “Finding Distinct Answers in Web Snippets”. In WEBIST 2008: 4th International Conference on Web Information Systems and Technologies, pp. 26-33, 4 – 7 May, 2008, Funchal, Madeira – Portugal.
  • A. Figueroa “Retrieving Answers to Definition Questions”. In QAWEB 2008, 22th April, 2008, Beijing, China.
  • A. Figueroa “Boosting the Recall of descriptive Phrases in Web Snippets”. In LangTech 2008, 28th – 29th February, 2008, San Michele a Ripa, Rome – Italy.
  • A. Figueroa “Mining Wikipedia for Discovering Multilingual Definitions on the Web”. In 4th International Conference on Semantics, Knowledge and Grid, Pages 125-132, Pekin, China, December, 2008.
  • A. Figueroa “Mining Wikipedia Resources for Discovering Answers to List Questions in Web Snippets”. In 4th International Conference on Semantics, Knowledge and Grid, Pages 133-140, Pekin, China, December, 2008.
  • A. Figueroa, G. Neumann “Mining Web Snippets to Answer List Questions”.
    In AIDM 2007: the 2nd International Workshop on Integrating AI and Data Mining, pp. 61-71, 2nd-6th December 2007, Gold Coast, Queensland, Australia. ISBN 978-1-920682-65-1. ISSN 1445-1336.
  • A. Figueroa, G. Neumann “A Multilingual Framework for Searching Definitions in Web Snippets”.
    In KI 2007: Advances in Artificial Intelligence, LNCS, Volume 4667/2007, ISBN978-3-540-74564-8, p. 144-159, Osnabr”{u”ck, Germany,
  • A. Figueroa, G. Neumann “Identifying Protein-Protein interactions in Biomedical publications”.
    In Proceedings of the Second BioCreAtIvE Challenge Evaluation Workshop – Critical Assessment of Information Extraction in Molecular Biology, Fundacion CNIO Carlos III, 2007, ISBN 84-933255-6-2, p. 217-225.
  • A. Figueroa, J. Atkinson “Using Syntactic Distributional Patterns for data-driven Answer Extraction from the Web”. In 5th Mexican International Conference on Artificial Intelligence, MICAI’2006, pp. 985-995, Apizaco, Mexico, November 13-17, 2006.
  • A. Figueroa, G. Neumann “Language Independent Answer Prediction on the Web”, In FinTAL 2006, Lecture Notes in Computer Science, Volume 4139, pages 423–434, Turku, Finland, 2006.
  • A. Figueroa, J. Atkinson “Molecular Sequence Alignment for Extracting Answers for Where-typed Questions from Google Snippets”. In 10th International Conference on Knowledge-Based & Intelligent Information & Engineering Systems, pp. 1190-1197, Bournemouth, UK, October 9-11, 2006.
  • Investigador Responsable, “Bridging the Gap between Askers and Answers in Community Question Answering Services.”, FONDECYT
  • Director Alterno, “iText Routing: Intelligent recognition of users’ intentions for the routing of calls in call centers, using semantic analysis and machine learning techniques.”, FONDEF-IdeA (CA12i10081), Feb. 2013– June 2015.
  • Consultor, “The design of patent retrieval system that aims at comparing ideas not just words.”, 01/2013–07/2013, CORFO, Start-Up.
  • Director Alterno, “A prototype for the automatic generation of answers in call centers utilizing artificial intelligence approaches” INNOVA (12IDL1-12964), 10/2012–03-/2013.
  • PostDoc, “Observatorios Escalables de la Web en Tiempo Real” FONDEF (D09I1185), 03/2011–03/2012.

 

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