Enhancing document modeling by means of open topic models Crossing the frontier of classification schemes in digital libraries by example of the DDC

5001 article Waltinger, Ulli; Mehler, Alexander Enhancing document modeling by means of open topic models Crossing the frontier of classification schemes in digital libraries by example of the DDC Library Hi Tech, 27(2009) 4 University of Bielefeld 5151 article Waltinger, Ulli; Mehler, Alexander; Mehler, Alexander; Horstmann, Wolfram; Waltinger, Ulli; L�sch, Mathias Building a DDC Annotated Corpus from OAI Metadata University of Bielefeld