I'm an Assistant Professor at the Department of CS of the University of Chile, head of the PRISMA research group (along with Prof. Benjamín Bustos), and Young Researcher of the CIWS (Center for Semantic Web Research). Previously I was a Researcher at Yahoo! Labs Santiago.

I'm interested in everything that is Web research: IR, data mining, social media analysis, query log analysis, multimedia, and privacy preservation in data mining. 

I'm incredibly lucky to be working with an excellent group of graduate students: Jorge Bahamonde, Teresa Bracamonte, Jheser Guzmán, José Miguel Herrera, Jazmine Maldonado, Omar Miranda, Vanessa Peña-Araya, Mauricio Quezada, Hernán Sarmiento, Ignacio Valderrama.

Conference Program Committees & Editorship

  • TKDE (Associate Editor)
  • WSDM
  • SIGIR (Senior PC Member)
  • CIKM
  • ECIR

Media Mentions

Earthquake Detection using Twitter Research
Credibility Research
Other mentions:


 Creative Commons License Articles published by ACM/IEEE/Springer/Elsevier/Chapman and Hall are posted here following the standard policy of these publishers, this is, the papers can be downloaded from this page for personal use, but not posted in other web sites or mailing lists. Unless otherwise stated, this work is under a Creative Commons License.

Journal Papers

Book Chapters

Conference & Workshop Papers

  • Gutierrez, F., Poblete, B.: Sentiment-Based User Profiles in Microblogging Platforms. In proceedings of the 26th ACM Conference on Hypertext and Social Media, 1-4 September 2015.
  • Quezada, M. Peña-Araya, V., Poblete, B.: Location-Aware Model for News Events in Social Media. In proceedings of the 38th Annual ACM SIGIR Conference, Santiago, Chile.
  • Guzman, J., Poblete, B.: On-line relevant anomaly detection in the Twitter stream: An Efficient Bursty Keyword Detection Model. In proceedings of KDD 2013 Workshop on Outlier Detection and Description, ODD, Chicago, USA.
  • Bravo-Marquez, F., Mendoza, M., Poblete, B.: Combining Strengths  Emotions and Polarities for Boosting Twitter Sentiment Analysis. In proceedings of KDD 2013 Workshop on Issues of Sentiment Discovery and Opinion Mining, WISDOM-KDD, Chicago, USA.
  • Bravo-Márquez, F.; Gayo-Avello, D.; Mendoza, M.; Poblete, B. Opinion dynamics of elections in Twitter, 8th Latin American Web Congress, LA_WEB, Cartagena de Indias, Colombia, p.32--39, (2012)
  • I. Bordino, D. Donato, B. Poblete: Extracting interesting association rules from toolbar data. In Proceedings of the 21st ACM international conference on Information and knowledge management 2012, Maui, HI, USA.
  • Bracamonte, T., Poblete, B.: Automatic Image Tagging Through Information Propagation in a Query Log Graph Based Structure. In proceedings of ACM Multimedia 2011, Arizona, USA.
  • B. Poblete, R. Garcia, M. Mendoza and A. Jaimes. Do All Birds Tweet the Same? Characterizing Twitter Around the World. In proceedings of CIKM'11. Glasgow,UK.
  • Garcia, R., Poblete, P., Mendoza, M., Jaimes, A.: Microblogging without Borders: Differences and Similarities. In ACM WebSci, 11. Koblenz, Germany.
  • Castillo, C., Mendoza, M., Poblete, B.: "Information Credibility on Twitter". In The World Wide Web Conference (WWW), Hyderabad, India. 2011.
  • Poblete, B., Bustos, B., Mendoza, M., Barrios, J.M.: Visual-Semantic Graphs: Using Queries to Reduce the Semantic Gap in Web Image Retrieval. In CIKM 2010 (Toronto, Canada). ACM Press, New York, NY.
  • Mendoza, M., Poblete, B., Castillo, C.: Twitter Under Crisis: Can we trust what we RT?. In SOMA 2010: KDD Workshop on Social Media Analytics, Washington, DC. July 2010. [bib]
  • Mendoza, M., Marin, M., Ferrarotti, F., Poblete, B: Learning to Distribute Queries onto Web Search Nodes. In proceedings of the 32nd European Conference on Information Retrieval (Milton Keynes, UK). Springer LNCS.
  • Poblete, B., Castillo, C., Gionis, A. 2008. Dr. Searcher and Mr. Browser: A Unified Hyperlink-Click Graph. In Proceedings of the  ACM 17th Conference on Information and Knowledge Management (Napa Valley, California, October 26-30, 2008). CIKM'08. ACM Press, New York, NY.
  • Poblete, B., Baeza-Yates, R. 2008. Query-Sets: Using Implicit Feedback and Query Patterns to Organize Web Documents. In Proceedings of the 17th international Conference on World Wide Web (Beijing, China, April 21 - 25, 2008). WWW '08. ACM Press, New York, NY.
  • Poblete, B., Spiliopoulou, M., Baeza-Yates, R.: Website Privacy Preservation for Query Log Publishing. First International Workshop on Privacy, Security, and Trust in KDD (PINKDD'07), San Jose, CA, USA. August 2007. Best Paper Award [watch the video]
  • Poblete, B., Baeza-Yates, R. 2006. A Content and Structure Website Mining Model. Poster. In Proceedings of the 15th international Conference on World Wide Web (Edinburgh, Scotland, May 23 - 26, 2006). WWW '06. ACM Press, New York, NY, 957-958.
  • Baeza-Yates, R., Poblete, B.: A Website Mining Model Centered on User Queries. European Web Mining Forum (EWMF 2005), pp. 3-15. Oporto, Portugal.
  • Baeza-Yates, R., Poblete, B.: Dynamics of the Chilean Web Structure, New York, USA, May 2004.
  • Baeza-Yates, R., Poblete, B.: Evolution of the Chilean Web Structure Composition. In Proceedings of the First Latin American Web Congress (LA-WEB 2003). 2003. IEEE CS Press.
  • Baeza-Yates, R., Poblete, B.: Evolution of the Web Structure. In Proceedings of The Twelfth International World Wide Web Conference. Budapest, Hungary, 2003. Poster.


  • PhD in Computer Science, U. Pompeu Fabra, Barcelona, Spain (Oct. 2009)
  • MSc, CS Engineer and Bachelor in Computer Science, U. of Chile, Santiago, Chile (2005, 2004, 2001)

Ph.D. Thesis

Articles in Spanish and Catalan

Journal Papers 

Conference & Workshop Papers

  • D. Nettleton, B. Poblete. Técnicas Difusas y No-Difusas para el Clustering del Contenido de Páginas de un Sitio Web. XIII Congreso Español sobre Tecnologías y Lógica Fuzzy, Ciudad Real. 2006. (In Spanish).
  • R. Baeza-Yates, B. Poblete: Una herramienta de minería de consultas para el diseño del contenido y la estructura de un sitio Web. III Taller de Minería de Datos y Aprendizaje (TAMIDA), pp. 39-48. September 2005 (In Spanish).
  • G. Boleda, S. Bott, B. Poblete, C. Castillo, M.E. Fuenmayor, T. Badia, V. López. CuCWeb, un corpus del català construït a partir de la web. Congrés Societat del Coneixement. Barcelona, España, 2004. (In Catalan).
  • Ricardo A. Baeza-Yates, Barbara Poblete, Felipe Saint-Jean: Evolución de la Web Chilena 2002-2003. JCC2003, Chillan. Chile. (In Spanish).

MSc. Thesis

Technical Reports

Last update: September 19, 2016.