14. The medium of claim 11 , further comprising: program code for identifying a plurality of document image fragments based on a plurality of documents; program code for generating a plurality of sets of sequential features associated with the plurality of document image fragments; program code for generating a plurality of sets of classification scores for the plurality of document image fragments responsive at least in part to the sets of sequential features; program code for generating a set of combined classification scores wherein each combined classification score is based on a set of classification scores indicating the likelihood that the plurality of document image fragments are written in a writing system of the set of writing systems; and program code for identifying a first writing system associated with the plurality of document images based on the set of combined classification scores.
14. The medium of claim 11 , further comprising: program code for identifying a plurality of document image fragments based on a plurality of documents; program code for generating a plurality of sets of sequential features associated with the plurality of document image fragments; program code for generating a plurality of sets of classification scores for the plurality of document image fragments responsive at least in part to the sets of sequential features; program code for generating a set of combined classification scores wherein each combined classification score is based on a set of classification scores indicating the likelihood that the plurality of document image fragments are written in a writing system of the set of writing systems; and program code for identifying a first writing system associated with the plurality of document images based on the set of combined classification scores. 16. The medium of claim 14 , further comprising: program code for generating a plurality of pair-wise penalty values based on the set of writing systems, wherein each pair-wise value indicates a penalty for misclassifying a second writing system of the set of writing systems as a third writing system of the set of writing systems; and program code for weighting the plurality of combined classification scores for each document image fragment based on the plurality of pair-wise penalty values.