11. A computer-implemented system for generating an issue network from a document corpus, the computer-implemented system comprising a processor and a non-transitory computer-readable medium storing computer readable instructions that, when executed by the processor, cause the processor to: search the document corpus for a set of documents discussing a starting issue, wherein the starting issue is one of a plurality of normalized issues found within the document corpus and the documents within the document corpus are linked by citations; determine a set of normalized issues discussed by the set of documents discussing the starting issue, wherein the set of normalized issues also includes the starting issue; determine co-occurrences of individual normalized issues of the set of normalized issues within individual cases of the set of documents; and link individual normalized issues of the set of normalized issues based on their co-occurrences within the set of documents, wherein the linked individual normalized issues at least in part define the issue network; and store the linked individual normalized issues in the non-transitory computer-readable medium.
18. The computer-implemented system of claim 11 , wherein the computer readable instructions further cause the processor to create at least one issues-by-case metadata file.