8. The computer-implemented method of claim 1 , further comprising: randomizing an order of the plurality of documents; dividing the plurality of documents into training documents and test documents; analyzing the textual data of the training documents, including determining the plurality of topic vectors for the training documents; identifying and removing from one or more of the plurality of topic vectors textual data that is included in a number of topic vectors below a threshold number; and empirically verifying the threshold number against the test documents.
1. A computer-implemented method, comprising: identifying a plurality of documents associated with a predetermined subject, where: each of the plurality of documents contains textual data, and the predetermined subject includes one or more terms identifying common subject matter shared by each of the plurality of documents; analyzing the textual data of each of the plurality of documents to identify one or more categories within the plurality of the documents, the analyzing including: refining the textual data by removing one or more words from the textual data that have a predetermined frequency and a predetermined significance, to create refined textual data, transforming the refined textual data into an array, and determining the one or more categories from the array, where each of the one or more categories includes a plurality of topic vectors that each include one or more identified keywords and a frequency of the one or more keywords within the refined textual data; linking each of the one or more categories to the predetermined subject; returning the one or more categories identified within the plurality of the documents as categories indicative of the predetermined subject; and classifying additional textual data, utilizing the one or more categories, including comparing the additional textual data to the one or more categories to determine a probability that the additional textual data is associated with the predetermined subject linked to the one or more categories.