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김동희
Fundamental Team
김창연, 송헌, 이재윤
CVPR 2020
Knowledge Distillation
Teacher Model의 soft label을 Student Model의 정답 label로 사용!
Hinton, Geoffrey, Oriol Vinyals, and Jeff Dean. "Distilling the knowledge in a neural network." arXiv preprint arXiv:1503.02531 (2015).
2
Knowledge Distillation
https://github.com/HobbitLong/RepDistiller
3
Why Knowledge Distillation is Successful?
4
Hypothesis:
1. 배경(background)보다 전경(foreground)를 학습함
2. 각 사물의 특징(visual concepts)들을 동시에
(simultaneously) 학습하는 경향이 있음
3. 처음에는 불필요한(unreliable) 특징(visual concepts)
도 학습하지만 나중에는 해당 특징을 제거
위의 세 가지 가설을 검증하기 위한 세 가지 Metric을 제안함
Quantification of Information Discarding
5
Hypothesis 1
6
Where,
배경(background)보다 전경(foreground)를 학습함
Hypothesis 1
7
배경(background)보다 전경(foreground)를 학습함
Hypothesis 2
8
각 사물의 특징(visual concepts)들을 동시에(simultaneously) 학습하는 경향이 있음
=> 특징을 얼마나 빨리 배우나
=> 얼마나 다양한 특징을 배우나
𝐷 𝑚𝑒𝑎𝑛과 𝐷𝑠𝑡𝑑 모두 작을수록 좋음
Hypothesis 2
9
각 사물의 특징(visual concepts)들을 동시에(simultaneously) 학습하는 경향이 있음
Hypothesis 3
10
처음에는 불필요한(unreliable) 특징(visual concepts)도 학습하지만 나중에는 해당 특징을 제거
11
Q & A
12
Result – Monocular Depth
13

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Explaining knowledge distillation