Nitzan Peleg Bilha Mendelson Detecting Change in Program Behavior for Adaptive Optimization. 150-162 2007 PACT http://doi.ieeecomputersociety.org/10.1109/PACT.2007.25 conf/IEEEpact/2007 db/conf/IEEEpact/IEEEpact2007.html#PelegM07