fast_align is a simple, fast, unsupervised word aligner.
If you use this software, please cite:
- Chris Dyer, Victor Chahuneau, and Noah A. Smith. (2013). A Simple, Fast, and Effective Reparameterization of IBM Model 2. In Proc. of NAACL.
The source code in this repository is provided under the terms of the Apache License, Version 2.0.
Input to fast_align must be tokenized and aligned into parallel sentences. Each line is a source language sentence and its target language translation, separated by a triple pipe symbol (|||). An example is as follows.
doch jetzt ist der Held gefallen . ||| but now the hero has fallen .
neue Modelle werden erprobt . ||| new models are being tested .
doch fehlen uns neue Ressourcen . ||| but we lack new resources .
fast_align requires only a C++ compiler; it can be compiled by typing make at the command line prompt.
Run fast_align to see a list of command line options. Here is an example invocation:
./fast_align -i text.fr-en -d -o -v > forward.align