Explored ideas in statistical machine translation. He shifted to a linguistics dissertation in syntax, did postdocs at Yale and Cornell, and from fall 2013 will be an assistant professor at the University of Minnesota.
Stephan was a Senior Software Engineer in the NLP group at Art Technology Group (ATG), Inc., went on to work in clinical NLP and machine translation at 3M, and now leads NLP at .His 2007 linguistics dissertation, () focused on the way that the choice of underlying semantic properties of an event description, reflected in syntactic structures, sheds light on the speaker's attitudes about the event. The underlying connection between semantic components and perceived attitude was established via psycholinguistic experimentation, and the ideas were then operationalized using an automatic parser and applied in sentiment classification experiments that demonstrated significant improvement over the prior state of the art.
Linguistics Dissertations and Theses - University of Kansas