Temporal Action Detection with Structured Segment Networks Supplementary Materials

3. Per-Class Detection Performance Although we obtain superior overall detection performance, it may also be of interest for audience to see the per-class performance. Due to space limit in the text, we present the per-class average of AP values using SSN on ActivityNet v1.2 validation set in Table 1. The average AP values are measured by varying the IOU thresholds from 0.5 to 0.95 in the step of 0.05. For comparison, detection results produced by SSN with proposals generated from a sliding window (486 proposals per video, AR = 71%) and TAG (100 proposals per video, AR = 67%) method are listed in parallel, showing that TAG-SSN achieves a higher AP on most of the classes. The results are also visualized in Fig. 3.