1. multi-class, multi-label, multi-task classfication區別
| 每個標籤有幾個可能取值 | ||
| 幾個標籤 | 2 | >2 |
| 1 | binary classification | multi-class classification |
| >1 | multi-label classification | multi-task classification |
2. 例子
| binary classification: 是不是食物 | 是食物: (1) |
| multi-class classification: 是食物？日用品？書本？ | 是書本: (2) 或 (one hot: 0, 0, 1) |
| multi-label classification: 是食物？塑料包裝？甜的？ | 是無包裝的甜食: (1, 0, 1) |
| multi-task classification: 是食物？塑料包裝？出廠日期？ | 是有包裝的3月出廠的甜食: (1, 1, 2) |
