Evaluation in the Crowd. Crowdsourcing and Human-Centered Experiments : Dagstuhl Seminar 15481, Dagstuhl Castle, Germany, November 22 - 27, 2015, Revised Contributions - Archambault, Daniel.; Purchase, Helen.; Hoßfeld, Tobias. (Information Systems and Applications, incl. Internet/Web, and HCI ;, 2017)