Yale University, the University of Michigan, and the University of California, Irvine, are collaborating on a three year research project, supported by a National Leadership Grant from the Institute of Museum and Library Services, to investigate how topic models can improve access to digital library and museum collections. As part of the project, we are conducting a study on the usability of topics from topic models. Your participation in this study will help us develop methods to evaluate topics. To participate in the study, please download the test from: http://topicmodel.research.yale.edu/topicevaluation/invitation.php. The test includes instructions and should take approximately 30 minutes. Once you have completed the test, which is delivered as an Excel file, please return it by e-mail to youn.noh@yale.edu by November 6 to be entered into a draw for an iPod touch. Participation in this study is open to faculty, students, staff, and alumni of Yale and the University of Michigan. One entry is allowed per person. Entries must be submitted using a Yale or University of Michigan e-mail address. Your identity won't be tied to your test. The winner of the drawing for the iPod touch will be posted on the invitation page (http://topicmodel.research.yale.edu/topicevaluation/invitation.php) and contacted by e-mail no later than 5:00 p.m. EST on November 20, 2009. Please feel free to forward this invitation to your friends and colleagues at Yale and the University of Michigan. If you have questions, please contact Youn Noh.