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Week 9

Week 9. Fatemeh Yazdiananari. Accomplished Tasks. Fixed the issues with classifiers We retrained SVMs with the new UCF101 histograms On temporally untrimmed videos: Three test scenarios: Temporal trimming of validation videos (baseline) Whole-video histogram

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Week 9

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  1. Week 9 FatemehYazdiananari

  2. Accomplished Tasks • Fixed the issues with classifiers • We retrained SVMs with the new UCF101 histograms • On temporally untrimmed videos: • Three test scenarios: • Temporal trimming of validation videos (baseline) • Whole-video histogram • Sliding window: uniform windows, regardless of the content • Sliding window: uniform windows, aligned with the content • Max pooling on sliding windows

  3. Accomplished Tasks • Fixed the issues with classifiers • We retrained SVMs with the new UCF101 histograms • On temporally untrimmed videos: • Three test scenarios: • Temporal trimming of validation videos (baseline) • Whole-video histogram • Sliding window: uniform windows, regardless of the content • Sliding window: uniform windows, aligned with the content • Max pooling on sliding windows ✔ ✔ ✔ ✔

  4. Sliding Window (Overlapping)

  5. RESULTS

  6. RESULTS

  7. RESULTS

  8. RESULTS

  9. RESULTS

  10. Comments on Overlapping Window and Weighted Classification • Video #18 (rope climbing) have 1.45% accuracy in overlapping sliding window • These correctly identified windows did not have high probability values for this reason weighted classification wasn’t able to predict the correct class of the video. • Same goes for Video #31 (playing violin)

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