9. Experiments - 數字分類
Source
Methode Target
Source only 下界 0.5749 0.8665 0.5919 0.74
Sa (fernando et al., 2013) 比較 0.6078 (7.9%) 0.8672 (1.3%) 0.6157 (5.9%) 0.7635 (9.1%)
Proposed approach 本篇 0.8149 (57.9%) 0.9048 (66.1%) 0.7107 (29.3%) 0.8866 (56.7%)
Train on target 上界 0.9891 0.9244 0.9951 0.9987
Brackets: much of the gap between the lower and the upper bounds was covered
9
11. Experiments - Train 時額外提供少量標記的 test set
11
• Semi-supervised domain adaptation
- When one is additionally provided with a small amount of labeled target data
• GTSRB data only
• Synthetic data only
• Both
Synthetic
+
1280 筆 GTSRB (隨機, 提供標註)
12. Recall
• Paper
- (2014) Unsupervised Domain Adaptation by Backpropagation
• Abstract
- 改善 train, test 相似但有些差異時預測效果不好
- 使用 Domain adaptation 概念結合 Adversarial neural network 架構執行
• 可適用任何 neural network
12
train test
13. Other
• GAN vs. Domain Adaptation
- GAN: generative adversarial network
13
1. 把 Classify 任務
改成影像生成
2. 把 Domain Classify 任務
改成是否為生成區分
Note. 生成的影像只能走下面那條
GAN 對 DA 做什麼