10. The method of claim 1 wherein the parameter set for the impostor profile for the most likely language includes a respective mean and standard deviation characterizing the score distribution for each of the impostor languages in the impostor set for the most likely language.
10. The method of claim 1 wherein the parameter set for the impostor profile for the most likely language includes a respective mean and standard deviation characterizing the score distribution for each of the impostor languages in the impostor set for the most likely language. 12. The method of claim 10 wherein comparing the document scores for the one or more impostor languages in the impostor set associated with the most likely language to the impostor profile for the most likely language includes: applying a similarity test to the document score and each impostor language in the impostor set for the most likely language, wherein the similarity test is applied separately for each impostor language.