Suzanne Little Ovidio Salvetti Petra Perner Semi-Automatic Semantic Annotation of Images. 45-50 2007 ICDM Workshops http://doi.ieeecomputersociety.org/10.1109/ICDMW.2007.86 conf/icdm/2007w db/conf/icdm/icdmw2007.html#LittleSP07