Knowledge Base Video Retrieval at TRECVID 2012
David Etter · TRECVID · 2012
This paper describes Knowledge Base Video Retrieval's (KBVR) participation in TREC Video 2012. We submitted 3 runs in the automatic Known-Item Search Task (KIS). Run KBVR_1 uses a probabilistic information retrieval model based on the BM25 ranking function. Runs KBVR_2 and KBVR_3 enhance the initial model using a re-ranking approach based on concept expansion.