This is a joint work with my student Su-Yang, he is actually in the audience just over there, and his research is sponsored by Microsoft Research here in Cambridge.
So what is human computation about? Basically it is about getting voluntary human efforts to solve some difficult computational problems where no known algorithms exist to solve those kind of problems efficiently. And human computation systems are typically designed as computer games, because games offer independence, this can actually use, these can be used as incentives to attract volunteers. And in turn, the volunteers’ game play collectively solves a computationally hard problem. That is the basic idea.