Previous approaches (Spagnola and Lagoze, 2011;Guo et al., 2011) consider the distance between two nodes and the influence of each node modeled by its weighted frequency to measure the strength of links in networks.
similarly, in our setting we can regard c ij as the distance between v i and v j and use the relative importance score to measure the influence of each node in G. we obtain Equation 5 to compute the relation strength F (i, j) between nodes v i and v j .