Seminario CIWS: "Understanding Real-World Events through Social Media"

Bárbara Poblete, académica DCC UChile
31 Julio, 2015 - 10:00
Auditorio DCC, tercer piso.
Centro de Investigación de la Web Semántica (CIWS)




The enormous rise in the generation of content on the Web, has made it increasingly important to automatically organize and understand this information.  With the unprecedented success of on-line social network platforms, such as Facebook, Twitter and Flickr, users have changed their roles from being only information consumers, to also becoming editors and publishers.  In particular, Twitter has become a preferred source for breaking news to an important percentage of Web users.  The streaming nature of this platform, facilitates real-time information dissemination, before its publication in traditional mass media.  Moreover, not only objective facts regarding news are shared through social media, but also multiple opinions and points of view.  Therefore, social media activity surrounding news events provides rich insight into human perception of world events. Nevertheless, the rapid flow of large data volumes in Twitter makes information volatile, producing the loss of potentially important historical data for users and for society in general as well. Following this motivation, in this presentation I will talk about the potential of user-generated content and social media data for modeling, summarizing and retrieving news events. I will present our current work in the direction of understanding events in social media as complex units of information, using sentiment, visualization and geo-temporal context.




Barbara Poblete is an Assistant Professor at the Computer Science Department of the University of Chile. She received her Ph.D. in October 2009, from the University Pompeu Fabra in Barcelona, Spain. She worked for 8 years at Yahoo! Labs, first as a long-term Ph.D. Intern in Barcelona and then as a Researcher in the Lab in Santiago. She is currently head of the PRISMA research group at her university and she is also a Young Researcher at the Center for Semantic Web Research. Her research interests are in the areas of Web Data Mining, Online Social Network Analysis and Information Retrieval on the Web. Her work on time-sensitive credibility in microblogging platforms, published at The World Wide Web Conference and in the Internet Research journal, has been featured in articles in Scientific American Magazine, The Wall Street Journal, Slate Magazine, The Huffington Post, BBC News, NPR, among others. In 2013, she was selected as one of Chile's 100 Young Leaders by El Mercurio, Chile's most influential newspaper. She is one of the organizers and co-founder of the annual Celebration of Women in Computing in Chile and a senior member of Latinas in Computing.



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