1. A computer-implemented method of generating an issue library from a document corpus defining a citation network, the method comprising: semantically linking, by a computing device, documents within the document corpus by pairing reasons-for-citing in citing documents with cited-text-areas in cited documents, wherein a cited-text-area in a cited document is a text area that has a highest similarity value of text present within the cited document; creating a group of semantically-similar reasons-for-citing and cited-text-areas that are semantically similar to at least one issue; and storing information regarding groups of semantically-similar reasons-for-citing and cited-text-areas in an issue library metadata entity, wherein each issue library metadata entity is associated with an individual issue, and each issue library metadata entity comprises: an issue identifier corresponding to the at least one issue; at least one taxonomy topic under which the issue identifier is located; and a plurality of issue instances under the at least one taxonomy topic, wherein each issue instance comprises a reason-for-citing or a cited-text-area in a document, each reason-for-citing or cited-text-area being semantically similar to one another and associated with the issue identifier.