7KH %LR&UHDWLYH 9 HYDOXDWLRQ ZRUNVKRS WDVNV RUJDQL]DWLRQ VHVVLRQV DQG WRSLFV Martin Krallinger* 1, Martin Pérez-Pérez 2,3 , Gael Pérez-Rodríguez 2,3 , Aitor Blanco-Míguez 2,3 , Florentino Fdez-Riverola 2,3 , Salvador Capella- Gutierrez 4 , Anália Lourenço* 2,3,5 , Alfonso Valencia 6,7,8,9 1 Biological Text Mining Unit, Structural Biology and BioComputing Programme, Spanish National Cancer Research Centre, C/Melchor Fernández Almagro 3, E-28029 Madrid, Spain 2 ESEI - Department of Computer Science, University of Vigo, Ourense, Spain 3 CINBIO - Centro de Investigaciones Biomédicas, University of Vigo, Campus Universitario Lagoas-Marcosende, 36310, Vigo, Spain 4 Spanish National Bioinformatics Institute Unit, Structural Biology and BioComputing Programme, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain 5 CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal 6 Life Science Department, Barcelona Supercomputing Centre (BSC-CNS). C/Jordi Girona, 29- 31, E-08034 Barcelona, Spain 7 Joint BSC-IRB-CRG Program in Computational Biology. Parc Científic de Barcelona. C/ Baldiri Reixac 10, E-08028 Barcelona, Spain 8 Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig de Lluís Companys 23, E- 08010 Barcelona, Spain 9 Spanish Bioinformatics Institute INB-ISCIII ES-ELIXIR, Madrid 28029, Spain {martiperez, gaeperez, aiblanco,riverola,analia}@.uvigo.es; alfonso.valencia@bsc.es; {scapella,mkrallinger}@cnio.es The BioCreative (Critical Assessment of Information Extraction in Biol- ogy) is a community-wide effort with the aim of evaluating biomedical text mining and information extraction tools. It is organized in the form of shared tasks or challenges. The evaluation workshop linked to each BioCreative event serves to analyze the results obtained for each track, and to present the used Gold Standard datasets/evaluation settings. For each track, top scoring teams were invited to present a system’s descrip- tion talk to uncover the used methodology and system’s implementation. Building on the achievements of previous BioCreative evaluations and workshops (BioCreative I, II, II.5, III, 2012 workshop, IV and V [1–5]) we have organized the BioCreative V.5 challenge evaluation workshop in Barcelona, Spain on April 26th-27th, 2017. To promote synergies, this workshop was co-located with the ELIXIR-EXCELERATE workshop on text mining infrastructure requirements, with a particular emphasis on Proceedings of the BioCreative V.5 Challenge Evaluation Workshop 8