compute the number of expected interactions between a set of proteins.
Usage
ppie.compLambda(degrees, edgeNum)
Arguments
degrees
vector containing the degrees of the nodes of a set of proteins
edgeNum
total number of edges of the entire graph
Value
number of expected interactions
References
Pradines JR, Farutin V, Rowley S, Dancik V. Analyzing protein lists with large networks: edge-count probabilities in random graphs with given expected degrees. J. Comput. Biol. 2005;12:113-128.
Franceschini, A et al. (2013). STRING v9.1: protein-protein interaction networks, with increased coverage and integration. In:Nucleic Acids Res. 2013 Jan;41(Database issue)