Fig. 4
From: Grasping frequent subgraph mining for bioinformatics applications
Subgraph candidate generation. a Node-based candidate generation, where the join operation will result in a subgraph that is one node larger. b Edge-based candidate generation, where the join operation will result in a subgraph that is one edge larger. c Right-most path extension, where only edges/nodes that end up in the right-most branch can be added