Video retrieval compares multimedia queries to a video collection in multiple dimensions and combines all the retrieval scores into a final ranking. Although text are the most reliable feature for video retrieval, features from other modalities can provide complementary information. This paper presents a reranking framework for video retrieval to augment retrieval based on text features with other evidence. We also propose a boosted reranking algorithm called Co-Retrieval, which combines a boosting type algorithm and a noisy label prediction scheme to automatically select the most useful weak hypotheses for different queries. The proposed approach is evaluated with queries and video from the 65-hour test collection of the 2003 NIST TRECVID evaluation.
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