[libvoikko] Sámi/HFST , anything new?

Krister Lindén krister.linden at helsinki.fi
Wed Jun 2 08:29:18 EEST 2010

The HFST library can very well continue to be released under GPL2 as a 

There is one part of the HFST library, i.e. the runtime or optimized 
lookup library, which we in Helsinki have created ourselves from scratch 
and for which we can issue additional license options, e.g. the Apache 
license. The intention was to have the optimized lookup code as GPL2 
when it is part of the HFST library and as an Apache license if it is 
used as stand-alone code.

The idea is that someone with proprietary lexicon content can use the 
HFST tools to create lexical transducers which they compile into the 
optimized lookup format. They can then use the stand-alone 
optimized-lookup code to access their proprietary lexicons as part of a 
proprietary application due to the Apache license.


Harri Pitkänen skrev den 1.6.2010 23:26:
> Are there any news on using Sámi/HFST with libvoikko? I have been following
> changes in victorio.uit.no SVN repository and saw some testing stuff but could
> not figure out whether it works or not. There were comments about --version
> switch missing from voikkospell. I have added it today (in libvoikko SVN
> trunk).
> I also noticed that HFST trunk has switched to HFST 3. It has unfortunate
> combination of some parts of the library being GPLv2, some Apache 2, some
> files without explicit license header and toplevel COPYING containing GPLv3.
> At least GPLv2 and Apache license appear to be incompatible so there seems to
> be no valid license that allows distributing HFST 3 at all. This seems a bit
> worrying. Are there any plans to relicense some parts of the library to fix
> this? Or is it possible to continue using HFST 2 to compile the Sámi
> morphology?
> The reason I'm asking this is that I was wondering if I should continue with
> the internationalization efforts for libvoikko 3.1 or leave them for 3.2.
> There are some Finnish grammar checker improvements waiting that are not
> urgent but would be nice to have. I personally consider internationalization
> having higher priority but if HFST needs more time it will be easier for me to
> work on Finnish issues first.
> Harri
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