Conferences organisation:
Title: Year: Type:
Conference and Labs of the Evaluation Forum (CLEF) 2013 Int. Conf.
Spanish Conference on Information Retrieval (CERI) 2012 Spanish Conf.

Workshops & sessions organisation:

Title: Year: Type:
Uncovering Plagiarism, Authorship, and social software misuse (PAN) 2012 lab @ CLEF
Corpora for Research on Emotion Sentiment & Social Signals (ESł) 2012 workshop @ LREC
Uncovering Plagiarism, Authorship, and social software misuse (PAN) 2011 lab @ CLEF
Search and Mining User-generated Contents (SMUC) 2011 workshop @ CIKM
Iberian Cross-Language NLP tasks (ICL) 2011 workshop @ SEPLN
Uncovering Plagiarism, Authorship, and social software misuse (PAN) 2010 lab @ CLEF
Search and Mining User-generated Contents (SMUC) 2010 workshop @ CIKM
Natural Language Processing and Web-based Technologies 2010 workshop @ IBERAMIA
Uncovering Plagiarism, Authorship, and social software misuse (PAN) 2009 workshop @ SEPLN
Web 2.0 and Natural Language Engineering tasks 2009 session @ IICAI
Computational Approaches to Semitic Languages 2009 workshop @ E-ACL
HLT & NLP within the Arabic world:Arabic Language and local languages processing. Status, updates and prospects 2008 workshop @ LREC
Natural Language-Independent Engineering 2007 session @ IICAI
Arabic Natural Language Processing 2007 workshop @ iCtiS
Cross-Language Information Processing (CLIP).
Beyond document processing: from computational linguistics to computational humour 		2007 workshop @ WILF
Cross-Language Information Processing (CLIP): From document analysis to document understanding 2006 workshop
Natural Language Processing for Information Retrieval 2005 session @ IICAI
Cross-Language Information Processing (CLIP): Clustering techniques for document organisation and retrieval 2005 workshop
Lexical resources and the web for word sense disambiguation 2004 workshop @ IBERAMIA
Conceptual Information Retrieval 2003 session @ IICAI
Conceptual Information Retrieval and Clustering of Documents 2003 session @ ISICT