?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Nadeau%2C+David&rft.aulast=Nadeau&rft.aufirst=David&rft.date=28+November+2007&rft.title=Semi-Supervised+Named+Entity+Recognition%3A+Learning+to+Recognize+100+Entity+Types+with+Little+Supervision+&rft.inst=University+of+Ottawa