Hi all,

From this week on, I will take the responsibility to order food for our HCI meeting. This week we're going to have Christina presenting. Please see the introduction and bio below. Since some of you are at CHI and we don't want to waste food, please SIGN UP through this doodle if you're coming: http://doodle.com/poll/3iwwe37kz3hq2dek. Thank you and looking forward to seeing you.

Presenters: Christina Chung, Asako Matsuoka, and Elsie Yang.
Bio: Christina, Asako and Elsie and 4th year Computer Science undergraduates at the University of Toronto. Under the supervision of Professor Marsha Chechik (UofT) and Doctor Julia Rubin (MIT), they are working in a team of five undergraduates to develop a game used to solve an NP-hard software engineering problem.

Presentation title: Serious Games for NP-hard Problems: Match Aliens
Abstract: Match Aliens is a serious game that employs crowdsourcing to solve an NP-hard problem known as n-way model merging. N-way model merging is the process of combining several input models into one. It has important uses in software engineering as it is used in combining product lines and views of stakeholders. The preliminary evaluation of the game showed promising results: motivated players were able to obtain the optimal score to an n-way merge and players showed consistent improvement. However, players reported that the game was difficult and not enjoyable. In this talk, we discuss the design challenges and the steps that were taken to overcome them.