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# | ||
# 选用的原因? | ||
- 类似deepfm和FNN等模型的高阶的特征交互来自于dnn部分,但是这样的特征交互是不可控且隐式的,难以描述的 | ||
- 向量级别的特征交互而不是元素级交互 | ||
- 经验上,vector-wise的方式构建的特征交叉关系比bit-wise的方式更容易学习 | ||
- 我也不知道具体好在哪,如果有大佬会可以指导一下,感恩 | ||
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# 什么叫显示隐式?什么叫元素级/向量级?什么叫做高阶/低阶特征交互? | ||
- 显示是可以写出feature交互的公式,隐式相反 | ||
- 元素级是以feature值交互,向量级是feature向量级点乘处理 | ||
- 高阶特征是类似DNN这种多层特征交互,低阶特征交互是FM这种特征单层处理方式 |