6. An article of manufacture comprising a non-transitory computer-readable storage medium containing instructions that if executed enable a system to: access an electronic document; obtain a pixel representation of a first version of an electronic document; perform one or more optical character recognition (OCR) tasks on the pixel representation of the electronic document; correct errors in the first version of the electronic document discovered by the OCR tasks; search for a second version of the electronic document; and create a customized error corrected version of the electronic document based on a comparison of a differential error rate between the first version of the electronic document and the second version of the electronic document.
6. An article of manufacture comprising a non-transitory computer-readable storage medium containing instructions that if executed enable a system to: access an electronic document; obtain a pixel representation of a first version of an electronic document; perform one or more optical character recognition (OCR) tasks on the pixel representation of the electronic document; correct errors in the first version of the electronic document discovered by the OCR tasks; search for a second version of the electronic document; and create a customized error corrected version of the electronic document based on a comparison of a differential error rate between the first version of the electronic document and the second version of the electronic document. 8. The article of claim 6 , further comprising instructions that if executed enable the system to compare the pixel representation of the electronic document to an OCR error dictionary to determine known OCR errors.