Reciprocity and Feedback Loops Reciprocal links are just the links pointing from the node i to the node j for which exists a link pointing from node i to the node i bd L a=L/N(N-1) The density of the links Reciprocity qualifies mutual" exchange"between two articles Feedback loops: A loop with directed links that start from and end with the same node 1010 Reciprocity and Feedback Loops • Reciprocal links are just the links pointing from the node i to the node j for which exists a link pointing from node j to the node i. Reciprocity qualifies mutual “exchange” between two articles. • Feedback loops: A loop with directed links that start from and end with the same node. a L N N = − / ( 1) The density of the links