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推荐系统-模型:FNN模型(FM+MLP=FNN)
2022-07-30 19:44:00 【u013250861】
原来是想把FNN和PNN放到一篇博客里一起写了,主要原因有两个:1. 是这两个模型都是交大张伟楠老师及合作者的成果;2. PNN也是对FNN的改进,两者之间存在一定关联。但最终还是决定分开写,因为放到一起会略显杂乱。因此,这篇博客的篇幅应该会相对较短,看起来会很舒服。
言归正传,FNN全称Factorisation Machine supported Neural Network,如果用一句简短的话概括FNN那就是:FM+MLP,如果再用一句稍显复杂的话概括FNN那就是:FNN是一个两阶段训练的模型,阶段一先训练一个FM模型得到每个field的embedding向量,阶段二,基于阶段一的embedding向量初始化MLP的embedding层,然后训练一个MLP(DNN)。
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