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The 2012 SESAME Multimedia Event Detection (MED) System

The SESAME team submitted four MED-11 runs which combined video content extraction results consisting of visual features, video OCR results, and motion features. The primary run and one of the secondary runs used two different methods of fusing visual features and OCR results; a third run combined visual features and motion features; and a fourth run combined visual features, OCR results, and motion features. Results were combined using rank-based fusion and weighted averages. We found that rank-based fusion of visual feature results and video OCR results (the primary run) had the best performance of the four runs. The initial performance of the runs with motion features, which were computed around keyframes, was poor, but a subsequent experiment showed that motion features can indeed contribute to improved performance.