[Snowball-discuss] Re: russian stemmer

[Martin Porter]

Oleg,

I've had a look at -n-ogo, -n-yi etc endings through the Russian vocabulary,
and feel that I would need to take linguistic advice before I could make any
progress with -n- removal.  

As you may recall, I did the Russian stemmer with a linguist, Pat Miles, who
lives some 60 miles away, and is not really a computer user. Also, Pat
charges for his work, which is a further inconvenience to me! I'd rather try
to get free linguistic help now through the open source community. Is there
anyone you know in Russia who might experiment a bit further with the
Snowball stemmer to see if they could make improvements here?

Martin

>current russian stemmer seems doesn't treat adjective endings like:
>'nogo', 'nomu', 'nyi' ...., so
>veslopidnogo (bicycle) -> velosipedn~ogo
>velosipednyi -> velosipedn~yi
> while better to have
>velosipednogo -> velosiped~nogo
>velosipednyi ->  velosiped~nyi
>
>I'm not a linguist, so  I don't know how properly distinguish
>'nogo' from 'ogo' etc. Probably there is some grammar rules.