Hi Brian!

I've read a lot of documents about this. The most interesting is:
http://www.dgp.toronto.edu/people/stam/reality/Research/pdf/cc.pdf
http://research.microsoft.com/en-us/um/people/cloop/qteg.pdf
http://www.eecs.berkeley.edu/~sohamum/files/cs284_f12_project_report.pdf