What are the numbers on the “edges” of the network?
Bio Networks have numbers on the “edges” between nodes (that is, the lines connecting genes to each other or genes to keywords). These numbers indicate the “strength” of the association between the nodes. Under default settings they correspond to the number of MEDLINE records in which the connected genes are co-cited. Using Advanced Options you can change graph drawing to Probabilistic. Values shown on network edges will then be decimals that can be read as p-values. Another option is to draw networks of sequence similarity. Sequence network edges are labeled with e-values.
