Theses

Title Ph.D. thesis: User Behavior in Microblogs with a Cultural Emphasis.
Universitat Pompeu Fabra, Barcelona-Spain. Public defense: 02/2015. |pdf|slides|
Finalist Big Data awards (BigDataCoe)

Master thesis: Hybrid Methods for Recommending Connections in Online Social Networks.
Universitat Pompeu Fabra, Barcelona-Spain. Defense: 07/2010. |pdf|slides|

B.S thesis: Desarrollo de un Software Multimedia Educativo para el Área de Matemáticas de Quinto Año de Educación Básica.
Escuela Politécnica del Ejército, Quito-Ecuador. Defense: 07/2007. |pdf|slides|

Invited Talks

Cultural Trails and Collective Memory in Online Data
Oxford Brookes University, March 2016, Oxford UK.

Online Collective Memory
FutureEverything 2016, Manchester-UK, 2016

Publications

The memory remains: Understanding collective memory in the digital age.
In Science Advances, 3(4): e1602368. doi:10.1126/sciadv.1602368. April 05, 2017. |pdf|

Even good bots fight: The case of Wikipedia.
In PLOS ONE, 12(2): e0171774. doi: 10.1371/journal.pone.0171774. February, 2017. |pdf|

Dynamics of Disagreement: Large-Scale Temporal Network Analysis Reveals Negative Interactions in Online Collaboration.
In Scientific Reports 6, Article number: 36333. doi:10.1038/srep36333. November, 2016. |pdf|

Dynamics and Biases of Online Attention: The Case of Aircraft Crashes.
In The Royal Society Open Science. Volume 3. Number 10. Royal Society Publishing. October 2016. [Featured on MIT Technology Review, Science and The Guardian]
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Language, Twitter and Academic Conferences.
The 26th ACM Conference on Hypertext and Social Media, 1-4 September 2015, Cyprus. |pdf|slides|

Who are my Audiences? A Study of the Evolution of Target Audiences in Microblogs.
The 6th International Conference on Social Informatics (SocInfo), 2014 November 10-13, Barcelona, Spain. |pdf|slides|

Follow My Friends This Friday! An Analysis of Human-generated Friendship Recommendations.
The 5th International Conference on Social Informatics (SocInfo), 2013 November 25-27, Kyoto, Japan. [Best paper award] |pdf|slides|

Twitter ain't Without Frontiers: Economic, Social, and Cultural Boundaries in International Communication.
The 17th ACM Conference on Computer Supported Cooperative Work and Social Computing (CSCW), 2014 February 15-19, Baltimore, Maryland, USA. |pdf|

Cultural Dimensions in Twitter: Time, Individualism and Power. [Honored mention] .
The 7th International AAAI Conference on WebLogs and Social Media. Boston, USA
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Using Eye Tracking to Identify Cultural Differences in Information Seeking Behavior .
Workshop Many People, Many Eyes (in CHI 2013). Paris, France
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On the Quest of Discovering Cultural Trails in Social Media .
Sixth ACM International Conference on Web Search and Data Mining 2013, Rome, Italy
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Do All Birds Tweet the Same? Characterizing Twitter Around the World
ACM International Conference on Information and Knowledge Management 2011, Glasgow, Scotland
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Microblogging without Borders: Differences and Similarities. .
Poster session at ACM WebSci, 11. Koblenz, Germany
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Weighted Content Based Methods for Recommending Connections in Online Social Networks
Workshop on Recommender Systems and the Social Web in the 2010 ACM Recsys Conference. Barcelona, Spain.
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