32. The computing device of claim 31 wherein the instructions that generate a corpus concept graph include instructions that generate document concept graphs for the documents of the corpus indicating connections between concepts within a document by identifying concepts of the document and indicating strength of the connections between the concepts of the document and wherein the corpus concept graph is created from the document concept graphs.
32. The computing device of claim 31 wherein the instructions that generate a corpus concept graph include instructions that generate document concept graphs for the documents of the corpus indicating connections between concepts within a document by identifying concepts of the document and indicating strength of the connections between the concepts of the document and wherein the corpus concept graph is created from the document concept graphs. 34. The computing device of claim 32 wherein the instructions that add to the corpus documents relating to the concepts that do not have sufficient connectedness include instructions that generate queries based on the concepts, identify documents that satisfy the queries, and add an identified document to the corpus that would improve connectedness of the concepts.