jasperzhong / read-papers-and-code

My paper/code reading notes in Chinese
43 stars 3 forks source link

TKDE '20 | Dynamic Heterogeneous Information Network Embedding With Meta-Path Based Proximity #334

Closed jasperzhong closed 1 year ago

jasperzhong commented 1 year ago

https://ieeexplore.ieee.org/abstract/document/9091208

jasperzhong commented 1 year ago

我看不懂,一堆公式. 看上去只考虑了graph structure,没有考虑temporal信息.

jasperzhong commented 1 year ago

这篇paper考虑的也是DTDG. 终于算看明白了一些这篇paper的意思. 首先有一个重要概念: metapath augmented adjacency matrix. 意思就是给定一个metapath,w_{i, j} = node v_i和node v_i之间的path instances数量.

image

然后有多条metapath,可以得到多个这也的metapath augmented adjacency matrix,加权求和一下得到了一个fused matrix W^(t). 每个snapshot可以得到一个这样的fused matrix. 这个fused matrix可以用矩阵的方法生成一个node embedding,后面也是用matrix pertubation方法更新node embedding. 强.

DyHNE和之前几个静态方法和 DHNE #343 (名字太像了...)更好. image

所以这里还是依赖metapath来找所有邻居,而不是HAN #328 只需要找其中几个邻居,感觉不是非常straighforward解决.