Grading Without the Answers by Daniel Seita '14
Monday, September 16, 2013 at 1:00pm to 1:45pm
Bronfman Science Center, 106 18 Hoxsey St, Williamstown, MA 01267, USA
Mathematics and Statistics Department Colloquium: Grading a Test Without Knowing the Answers
Abstract: Without knowing the answers, how does one grade a test taken by a group of participants? For each question in such a test, how does one determine its correct answer and its relative difficulty? These questions are relevant due to the need to harness the collective intelligence of a group of people to provide a better answer than one person could do alone, especially for problems that involve attacking brand new questions without known answers. One way we can attempt to solve these problems is using techniques based on probabilistic graphical models (PGMs). Thus, the first part of this talk will give an introduction to PGMs and the second part will discuss an application to crowdsourcing.
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