12. The data processing system of claim 11 , wherein the program code that, when executed in the memory of the host computer, builds a respective normalized dominance threshold associated with each of the cognitive motivation orientations comprises program code that, when executed in the memory of the host computer: receives a tuning corpus of tuning documents, wherein: each tuning document comprises a plurality of meaningfully arranged words; each tuning document being annotated with a respective document-level annotation, wherein the respective document-level annotation identifies a dominant cognitive motivation orientation set assigned to the particular tuning document annotated by that particular document-level annotation; obtains, for each tuning document, document raw confidence weight scores associated with every cognitive motivation orientation expressed in that particular tuning document by, for each tuning document: for each indicator n-gram: identifying each instance of a matching n-gram appearing in that particular tuning document, wherein the matching n-gram matches the particular indicator n-gram; and for each instance of a matching n-gram, incrementing a document raw confidence weight score associated with the cognitive motivation orientation that is associated with that particular indicator n-gram matched by the matching n-gram, wherein the incrementing is according to the confidence weight assigned to that particular n-gram; for each tuning document, normalizes the document raw confidence weight scores for each cognitive motivation orientation expressed in that particular tuning document by: dividing the raw confidence weight scores associated with each cognitive motivation orientation expressed in that particular tuning document by a number of tokens contained in that particular tuning document to assign, normalized document confidence weight scores to each cognitive motivation orientation expressed in that particular tuning document; and selects, for each cognitive motivation orientation, a normalized dominance threshold, wherein the normalized dominance threshold minimizes a number of incorrectly classified tuning documents, wherein: incorrect classification of a given tuning document with respect to a particular cognitive motivation orientation is a condition selected from the group consisting of: (a) the normalized document confidence weight score associated with that cognitive motivation orientation, with respect to that particular tuning document, exceeds the normalized dominance threshold but that cognitive motivation orientation is absent from the document-level annotation annotating that particular tuning document; and (b) the normalized document confidence weight score associated with that cognitive motivation orientation, with respect to that particular tuning document, is less than or equal to the normalized dominance threshold but that cognitive motivation orientation is present in the document-level annotation annotating that particular tuning document.
11. The data processing system of claim 9 , wherein the database-building module further comprises program code that, when executed in the memory of the host computer, builds a respective normalized dominance threshold associated with each of the cognitive motivation orientations.