Yahoo Labs is proud to be a silver sponsor of the 37th annual European Conference on Information Retrieval (ECIR). ECIR is the main European forum for the presentation of new research results in the field of Information Retrieval. ECIR encourages the submission of high quality research papers on a variety of topics reporting original, previously unpublished results. More information about the conference can be found on their website, http://ecir2015.ifs.tuwien.ac.at/wp/.