Re: Radixor-Lucene: external stemming adapter for Lucene 10

Hi,

in general we are open to include external stemmers into the Lucene code 
base (maybe only the adaptor), but the external depenencies should be 
kept minimal (not including a ton of utility libraries like Apache 
commons-foobar added as transitive dependencies). As far as I 
understand, the stemmer classes are not "ready-to use", so to actually 
include the filter into your analysis chain you need to add those data 
files possible created with the Radixor framework, correct? If we need 
to shit with many data files for all those languages, we may need to 
think about a way to regenerate them in our code and ship them to have 
ready-to-use stemmers for supported languages.

Small comment about the Lucene code: It has a services file for the 
factory, but no module-info.java class file yet. It would be great to 
add a module descriptor - also for the Radixor framework, too, because 
Lucene is module conformant. This will be mandatory when it needs to be 
included into Lucene.

Uwe

Am 19.04.2026 um 23:30 schrieb Leo Galambos:
>
> Hello Lucene developers,
>
> I would like to share a new external project that may be relevant to 
> the Lucene analysis community: Radixor-Lucene.
>
> Radixor-Lucene is an adapter for using the Radixor stemmer in Apache 
> Lucene 10. Radixor builds on ideas from the historical Egothor 
> stemming line, with a focused implementation aimed at compact compiled 
> runtime data, deterministic lookup, and practical extension with 
> domain-specific vocabulary.
>
> It may be relevant in cases where one would otherwise consider 
> Stempel-style stemming or Porter-family stemmers. It is a stemming 
> toolkit, not a full morphological analyzer.
>
> Project links:
>
>  *
>
>     Radixor: https://leogalambos.github.io/Radixor/
>
>  *
>
>     Radixor-Lucene: https://github.com/leogalambos/Radixor-Lucene
>
> I would be interested in feedback on whether this is best kept purely 
> as an external adapter, or whether the Lucene community would see 
> value in it as part of a broader modernization path for the 
> Stempel-style stemming space.
>
> Best regards,
> Leo Galambos
>
>
-- 
Uwe Schindler
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