MSR develop an agent to answer questions posted on twitter. The agent uses crowdsourcing – very much a HAC!

http://research.microsoft.com/en-us/um/people/merrie/papers/crowdsourced_qna_icwsm2013.pdf

Dr. Sarvapali D. Ramchurn

Lecturer (Roberts Fellow),

Agents, Interaction, and Complexity Group,

School of Electronics and Computer Science,

University of Southampton, SO17 1BJ

t: +44 (0) 2380599309

w: http://users.ecs.soton.ac.uk/sdr