14. The computer program product of claim 13 wherein performing the biological meaningfulness analysis further comprises actions of: identifying a plurality of the nodes that exhibit one or more similar processes by: selecting a plurality of gene ontology (GO) annotations; setting a GO vector value for one or more nodes where the selected GO annotation occurs to a value based on an inverse document frequency (IDF) value corresponding to a biological category represented by each of the selected GO annotations; and calculating a process similarity value (PSV) corresponding to a plurality of connections between the plurality of nodes based on the GO vector values set for each of the nodes included in each of the connections.
13. A computer program product stored in a computer readable storage medium, comprising computer program code that, when executed by an information handling system, causes the information handling system to perform actions comprising: performing a biological meaningfulness analysis on a biological relationship graph that has a plurality of paths through the graph, wherein each of the plurality of paths includes a plurality of connected nodes, and wherein the biological meaningfulness analysis is based on a process similarity calculation of gene ontologies of the nodes in the paths and a contextual similarity calculation of word occurrences from a plurality of documents in a corpus where a reference to the respective nodes are found; performing a biological interestingness analysis on the biological relationship graph that is based on a path diversity value calculated for each of the paths and a path rarity value calculated for each of the paths, wherein the path diversity value is based on a number of distinct documents in each of the paths and the number of connections in the respective paths, and wherein the path rarity value is based a total degrees of nodes that form each of the paths; and screening the plurality of paths in the biological relationship graph based on the biological meaningfulness analysis and the biological interestingness analysis, wherein the screened plurality of paths are displayed to a user, and wherein the screening further comprises actions of: identifying one or more meaningful paths through the biological relationship graph based on comparing a path meaningfulness value (PMV) with a threshold; and ranking the meaningful paths by a path interestingness value (PIV) corresponding to each of the meaningful paths.