推荐模型-上下文感知-2019：Fi-GNN

推荐模型-上下文感知-2019：Fi-GNN

Reference:
	Li, Zekun, et al. "Fi-GNN: Modeling Feature Interactions via Graph Neural Networks for CTR Prediction"
	in CIKM 2019.
	Reference code:
	- https://github.com/CRIPAC-DIG/GraphCTR
	- https://github.com/xue-pai/FuxiCTR