2. A computer-implemented method comprising: receiving a document and a corresponding request from a user to translate the document from a first language to a second language, the document including at least one tag associated with a first portion of text within the document, the second language being different than the first language; receiving a manual translation of the document, the manual translation being a version of the document that has been translated from the first language into the second language by a human translator and that does not include the at least one tag; generating a plurality of alignments between the document and the manual translation of the document using a statistical alignment model, each of the plurality of alignments associating the first portion of text within the document to a second portion of text within the manual translation of the document; selecting one of the plurality of alignments as a selected alignment based on a likelihood that the first portion of text within the document corresponds to the associated second portion of text within the manual translation of the document according to the selected alignment; mapping a location of the at least one tag in the document to a corresponding location within the manual translation of the document based on the selected alignment; and inserting the at least one tag into the manual translation at the corresponding location to obtain a modified manual translation of the document.
2. A computer-implemented method comprising: receiving a document and a corresponding request from a user to translate the document from a first language to a second language, the document including at least one tag associated with a first portion of text within the document, the second language being different than the first language; receiving a manual translation of the document, the manual translation being a version of the document that has been translated from the first language into the second language by a human translator and that does not include the at least one tag; generating a plurality of alignments between the document and the manual translation of the document using a statistical alignment model, each of the plurality of alignments associating the first portion of text within the document to a second portion of text within the manual translation of the document; selecting one of the plurality of alignments as a selected alignment based on a likelihood that the first portion of text within the document corresponds to the associated second portion of text within the manual translation of the document according to the selected alignment; mapping a location of the at least one tag in the document to a corresponding location within the manual translation of the document based on the selected alignment; and inserting the at least one tag into the manual translation at the corresponding location to obtain a modified manual translation of the document. 5. The computer-implemented method of claim 2 , further comprising generating a probability score for each of the plurality of alignments.