Yuri,
The English stemmer gives a scheme for including exceptions, which you might
try and adapt to the Russian stemmer if the "Kiev" case was sufficiently
important.
You must of course realise that the stemmers are not 100% accurate, and a
certain rate of error is inevitable. These errors do not necessarily degrade
retrieval performance however (see the Introduction to Snowball).
Are there many other words that mis-stem in a similar way?
Martin
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