If you want details on the tech. go read some of John Langford's publications (http://research.yahoo.com/John_Langford http://research.yahoo.com/John_Langford)

If you want details on the tech. go read some of John Langford's publications (http://research.yahoo.com/John_Langford http://research.yahoo.com/John_Langford) and the rest of the Machine Learning group at Yahoo (http://research.yahoo.com/Machine_Learning http://research.yahoo.com/Machine_Learning). I sometimes joke that Myna (http://www.mynaweb.com http://www.mynaweb.com -- ob plug for my startup!) should be renamed the John Langford Appreciation Society.