11. A system for rule generation, the system comprising one or more processors and one or more memory devices operably coupled to the one or more processors, the one or more memory devices storing executable and operational data effective to cause the one or more processors to: receive a plurality of classification rules; for a set of documents in a corpus, perform repeatedly for each document in the set: applying a plurality of rules from the plurality of classification rules applicable to the document by a) applying an applicable rule of the plurality of rules to the document to obtain a rule outcome, b) selecting another applicable rule of the plurality of rules according to the rule outcome, c) repeating a) and b) one or more times until a final rule outcome is reached; presenting the final rule outcome and the document to a rater; receiving a rating of the final rule outcome; and updating, for one or more of the applicable rules, quality metrics corresponding to the one or more of the applicable rules in accordance with the received rating, wherein updating the quality metrics of the one or more applicable rules comprises, for each applicable rule, adjusting the quality metric corresponding to the each applicable rule by an amount that decreases with a number of intervening rules from the applicable rule that produced the final rule outcome; compare the quality metrics of the plurality of rules to a rule threshold; determine that a first portion of the plurality of rules have quality metrics above the threshold; determine that a second portion of the plurality of rules have quality metrics above the threshold; add the first portion to a production rule set and discarding the second portion; and perform production document classification in accordance with the production rule set.
12. The system of claim 11 , wherein the executable and operational data are further effective to cause the one or more processors to receive the plurality of classification rules by: selecting an element of the corpus; transmitting a rule request with the selected element to a rule generator; receiving a rule from the rule generator; and adding the received rule to the plurality of classification rules.