HCOMP is aimed at promoting the scientific exchange of advances in human computation and crowdsourcing among researchers, engineers, and practitioners across a spectrum of disciplines. The conference was created by researchers from diverse fields to serve as a key focal point and scholarly venue for the review and presentation of the highest quality work on principles, studies, and applications of human computation. The meeting seeks and embraces work on human computation and crowdsourcing in multiple fields, including human-computer interaction, cognitive psychology, economics, information retrieval, databases, systems, optimization, and multiple subdisciplines of artificial intelligence, such as vision, speech, robotics, machine learning, and planning. 3