ACT-DL logo

ACT-DL is being maintained at Bielefeld University Library as one of the outcomes of the project Automatic Enhancement of OAI Metadata, which is being funded by the German Research Foundation (DFG).

Project Partners

How does the Automatic Categorization Work?

The categorization is based on support vector machines (SVMs). This is a machine learning model that has been trained using OAI-DC metadata harvested by Bielefeld Academic Search Engine (BASE).


For technical questions regarding this site, please contact:

Bielefeld University Library — LibTec (Library Technology and Knowledge Management department)

Original implementation: Mathias Loesch
Current maintainer: Christian Pietsch

Project Heads

Bielefeld University Library

Barbara Knorn
Acting Director Bielefeld University Library


Text Technology Lab, Goethe University Frankfurt am Main

Prof. Dr. Alexander Mehler


Department for NLP, University of Leipzig

Prof. Dr. Gerhard Heyer


DDC Copyright notice

Logo of Bielefeld University Library
Logo of BASE search engine
Logo of
Logo of NLP department of Leipzig University
Logo of the German Research Foundation