KenLM is inference-only. It cannot create ARPA files. So you'll need to use your favorite toolkit to generate the ARPA.
On 10/22/10 07:52, supp...@precisiontranslationtools.com wrote: > Thanks Ken. Nice work. > > Is there a way to train the ARPA formatted LM with KenLM, or do we need to > train with another tool, like SRILM or convert IRSTLM to full ARPA format? > > Thanks again, > Tom > > > > On Mon, 18 Oct 2010 20:31:38 -0400, Kenneth Heafield <mo...@kheafield.com> > wrote: >> Hi Moses, >> >> Introducing kenlm in Moses trunk. You no longer need to download a >> separate language model to use Moses; it's distributed with Moses and >> compiled in by default on UNIX. This is threadsafe language model >> inference code that returns the same probabilities as SRI (up to >> floating point rounding). It loads APRA files in 2/3 the time SRI takes >> and uses less memory too. Using kenlm is simple: in your [lmodel-file] >> section, change the first digit to 8. For example, >> >> "0 0 2 foo.arpa" changes to "8 0 2 foo.arpa" >> >> For even faster loading, use the binary format: >> >> kenlm/build_binary foo.arpa foo.binary >> >> then simply provide the binary filename in your moses.ini e.g. >> "8 0 2 foo.binary"; it auto detects binary files using magic bytes at >> the beginning. >> >> The code is ready for use and provides correct results. Inference is >> slower than it should be due to inefficiencies in the Moses-side wrapper >> code (it does a vocab lookup for all 5 words every time). I'm working >> on it and once this is done I'll post some benchmarks against SRI and >> IRST. The binary format is subject to change, but contains a version >> number so on very rare occasions after, new versions will tell you to >> rebuild your binary files. Windows is currently not supported (it uses >> mmap) though I welcome contributions using #ifdef and CreateFileMapping. >> >> Have fun and let me know about your experiences with it. >> >> "Ken" >> _______________________________________________ >> Moses-support mailing list >> Moses-support@mit.edu >> http://mailman.mit.edu/mailman/listinfo/moses-support _______________________________________________ Moses-support mailing list Moses-support@mit.edu http://mailman.mit.edu/mailman/listinfo/moses-support
