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Deep Temporal Linear Encoding Networks

CVPR 2017 · Video › Action recognition · approach: Spatiotemporal CNNs for action recognition · 254 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
aggregate temporal feature maps by element-wise multiplication rather than averaging or maximum (ablation)BN-Inception two-stream TLE · UCF101 and HMDB51 (split1)accuracy: 91.3/67.4; 92.6/68.1 -> 94.8/70.4Helped
aggregate C3D clip features by element-wise multiplication rather than averaging or maximum (ablation)C3D TLE · UCF101 (split1)accuracy: 84.2; 84.6 -> 86.1Helped
use BN-Inception instead of VGG-16 or AlexNet (ablation)two-stream TLE · UCF101 and HMDB51 (split1), spatial and temporal streamsaccuracy: AlexNet 74.4/50.8, 82.7/52.4; VGG-16 81.5/60.9, 86.8/61.5; BN-Inception 86.9/63.2, 89.1/66.4Helped
use bilinear encoding rather than fully connected pooling (ablation)BN-Inception two-stream TLE · UCF101 and HMDB51accuracy: 92.2/68.8 -> 95.6/71.1Helped
use full bilinear encoding rather than Tensor Sketch bilinear encoding (ablation)BN-Inception two-stream TLE · UCF101 and HMDB51accuracy: 95.1/70.6 -> 95.6/71.1Helped
use bilinear encoding rather than fully connected pooling (ablation)C3D TLE · UCF101 and HMDB51accuracy: 83.1/58.6 -> 86.3/60.3Helped
use full bilinear encoding rather than Tensor Sketch bilinear encoding (ablation)C3D TLE · UCF101 and HMDB51accuracy: 85.6/59.7 -> 86.3/60.3Helped
add a Places365-pretrained scene-context stream (ablation)VGG-16 spatial TLE · UCF101 and HMDB51 (split1)accuracy: 81.5 / 60.9 -> 83.8 / 63.6Helped
encode entire videos with TLE bilinear features rather than the Two Stream baselineBN-Inception two-stream · UCF101 and HMDB51accuracy: 88.0/59.4 -> 95.6/71.1Helped
add TLE bilinear encoding to the C3D modelC3D · UCF101 and HMDB51accuracy: 82.3/56.8 -> 86.3/60.3Helped

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