Department of Computer Science and Engineering, University of Colorado at Denver, USA. Allison.Gehrke@email.cudenver.edu|Department of Computer Science and Engineering, University of Colorado at Denver, USA. Allison.Gehrke@email.cudenver.edu|Department of Computer Science and Engineering, University of Colorado at Denver, USA. Allison.Gehrke@email.cudenver.edu|Department of Computer Science and Engineering, University of Colorado at Denver, USA. Allison.Gehrke@email.cudenver.edu|Department of Computer Science and Engineering, University of Colorado at Denver, USA. Allison.Gehrke@email.cudenver.edu|Department of Computer Science and Engineering, University of Colorado at Denver, USA. Allison.Gehrke@email.cudenver.edu|Department of Computer Science and Engineering, University of Colorado at Denver, USA. Allison.Gehrke@email.cudenver.edu