00431nas a2200133   4500000000100000000000100001008004100002260005400043100002100097700001600118700002200134245012900156300001200285       2017                            d  cApril 20-21 2017a Cambridge, Massachusetts, USA 1 aRobert Sottilare1 aRodney Long1 aBenjamin Goldberg00aEnhancing the Experience Application Program Interface (xAPI) to Improve Domain Competency Modeling for Adaptive Instruction  a265-268