Text Alignment: Aligning Sentences and Paragraphs
Text alignment is useful for bilingual lexicography, MT, but also as a first step to using bilingual corpora for other tasks.
Text alignment is not trivial because translators do not always translate one sentence in the input into one sentence in the output, although they do so in 90% of the cases.
Another problem is that of crossing dependencies, where the order of sentences are changed in the translation.