If anyone is interested, the write ups for eswiki, itwiki, and dewiki are
done and available on the same page:
On Mon, Apr 18, 2016 at 6:50 PM, Trey Jones <tjones(a)wikimedia.org> wrote:
I've just finished my write-up for optimizing the languages that could
eventually be used for language detection on French Wikipedia. (Spanish,
Italian, and German are still to come.)
The full write-up
on corpus creation and clean up, performance stats, and more.
Briefly, about 15% of "low performing" queries (those with < 3 results)
are easily filtered junk, and 65% of the remainder are not in an
identifiable language (e.g., names, acronyms, more junk, etc.).
Based on a sample of 682 poor-performing queries on frwiki that are in
some language, about 70% are in French, 10-15% are in English, about 7-12%
are in Arabic, fewer than 3% are in Portuguese, German, and Spanish, and
there are a handful of other languages present.
Because of the relatively low percentage of low-performing queries that
are relevant, we will still need to do an A/B test before discussing
deploying this to frwiki. An A/B test on enwiki
<https://phabricator.wikimedia.org/T121542> in in the works at the moment.
The optimal settings for frwiki, based on these experiments, would be to
use the TextCat query-based models for French, English, Arabic, Russian,
Chinese, Armenian, Thai, Greek, Hebrew, Korean (fr, en, ar, ru, zh, th, el,
hy, he, ko), using the default 3000-ngram models.
Software Engineer, Discovery