10. A system for grouping documents, the system comprising: one or more computing devices comprising one or more hardware processors, programmed, via executable code instructions, to implement: a matching unit for comparing a plurality of documents, the matching unit configured to receive as input a first document and a second document, wherein each document of the plurality of documents comprises distinct character types, and wherein the matching unit is further configured to generate: a first indicator of a common character count between the first document and the second document, wherein the common character count corresponds to a number of distinct character type occurrences in both the first document and the second document; a second indicator of a character variance count between the first document and the second document, wherein the character variance count corresponds to differences in a number of occurrences of distinct character types in both the first document and the second document; a single indicator by combining at least the first indicator and the second indicator, wherein the matching unit is configured to compare the single indicator to a threshold indicator to determine whether there is a match between the first document and the second document; and a grouping based at least in part on the single indicator; and a matching reporting unit adapted to report the grouping generated by the matching unit.
10. A system for grouping documents, the system comprising: one or more computing devices comprising one or more hardware processors, programmed, via executable code instructions, to implement: a matching unit for comparing a plurality of documents, the matching unit configured to receive as input a first document and a second document, wherein each document of the plurality of documents comprises distinct character types, and wherein the matching unit is further configured to generate: a first indicator of a common character count between the first document and the second document, wherein the common character count corresponds to a number of distinct character type occurrences in both the first document and the second document; a second indicator of a character variance count between the first document and the second document, wherein the character variance count corresponds to differences in a number of occurrences of distinct character types in both the first document and the second document; a single indicator by combining at least the first indicator and the second indicator, wherein the matching unit is configured to compare the single indicator to a threshold indicator to determine whether there is a match between the first document and the second document; and a grouping based at least in part on the single indicator; and a matching reporting unit adapted to report the grouping generated by the matching unit. 12. The system of claim 10 , further comprising: a user interface unit configured to generate one or more user interfaces configured to display one or more clusters of documents based on the single indicator.