"Graph" "Nodes" "Edges" "Edge Density" brock400_1 400 59723 0.75 brock400_2 400 59786 0.75 brock400_3 400 59681 0.75 brock400_4 400 59765 0.75 brock800_1 800 207505 0.65 brock800_2 800 208166 0.65 brock800_3 800 207333 0.65 brock800_4 800 207543 0.65 p_hat500-3 500 93800 0.752 p_hat700-3 700 121728 0.748 p_hat1000-2 1000 244799 0.49 sanr200_0.9 200 17863 0.9 sanr400_0.7 400 55869 0.7