Parallel text
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A parallel text is a text placed alongside its translation or translations. Parallel text alignment is the identification of the corresponding sentences in both halves of the parallel text. The Loeb Classical Library and the Clay Sanskrit Library are two examples of dual-language series of texts. Reference Bibles may contain the original languages and a translation, or several translations by themselves, for ease of comparison and study; Origen's Hexapla (Gr. for "sixfold") placed six versions of the Old Testament side-by-side. Note also the most famous example, the Rosetta Stone.
Large collections of parallel texts are called parallel corpora (see text corpus). Alignments of parallel corpora at sentence level are prerequisite for many areas of linguistic research. During translation, sentences can be split, merged, deleted, inserted or reordered by the translator. This makes alignment a non-trivial task.
Bitext
In the field of translation studies a bitext is a merged document composed of both source- and target-language versions of a given text.
Bitexts are generated by a piece of software called an alignment tool, or a bitext tool, which automatically aligns the original and translated versions of the same text. The tool generally matches these two texts sentence by sentence. A collection of bitexts is called a bitext database or a bilingual corpus, and can be consulted with a search tool.
Bitexts and translation memories
The concept of the bitext shows certain similarities with that of the translation memory. Generally, the most salient difference between a bitext and a translation memory is that a translation memory is a database in which its segments (matched sentences) are stored in a way that is totally unrelated to their original context; the original sentence order is lost. A bitext retains the original sentence order. However, some implementations of translation memory, such as Translation Memory eXchange (TMX) (a standard XML format for exchanging translation memories between computer-assisted translation (CAT) programs, allow preserving the original order of sentences.
Bitexts are designed to be consulted by a human translator, not by a machine. As such, small alignment errors or minor discrepancies that would cause a translation memory to fail are of no importance.
In his original 1988 article, Harris also posited that bitext represents how translators hold their source and target texts together in their mental working memories as they progress. However, this hypothesis has not been followed up.
See also
- Computer-assisted reviewing
- Machine translation
- Natural language processing
- Polyglot (book)
- Ruby character
