1. multi-class, multi-label, multi-task classfication区别
| 每个标签有几个可能取值 | ||
| 几个标签 | 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？书本？ | 是书本: (2) 或 (one hot: 0, 0, 1) |
| multi-label classification: 是食物？塑料包装？甜的？ | 是无包装的甜食: (1, 0, 1) |
| multi-task classification: 是食物？塑料包装？出厂日期？ | 是有包装的3月出厂的甜食: (1, 1, 2) |