Inspired by these previous works, we build a multi-stage minimum span- ning tree generation algorithm for stable WG′ prediction. Stage 2 EGCN Stage 3 MST T2 EGCN MST Stage 4 T3 EGCN MST T4 EGCN CNN Outpout Tree-Intersection ⌘ Merge & MST W G0 Merge & MST Figure 5: Illustration...