https://zhuanlan.zhihu.com/p/46313756 Attention机制核心公式 https://www.bilibili.com/video/BV1Tt411V7WE?from=search&seid=17942757023213297484 attention机制原理+代码 一句话重点 https://blog.youkuaiyun.com/sun_xiao_kai/article/details/95873046