- Alexander Hauptmann, Rong Yan. 2006. Probabilistic models for combining diverse knowledge sources in multimedia retrieval. Abstract: In recent years, the multimedia retrieval community is gradually shifting its emphasis from analyzing one media source at a time to exploring the opportunities of combining diverse knowledge sources from correlated media types and context. In order to combine multimedia knowledge sources, two basic issues must be addressed: what to combine and how to combine. While considerable effort has been expended to generate a wide range of ranking features from knowledge sources, relatively less attention has been given to the problem of finding a suitable strategy to combine them. It has always been a significant challenge to develop principled combination approaches and capture useful factors such as query information and context information in the retrieval process. 
