[Wikipedia-l] Categories indexed for largest wikipedias

Mon Jan 3 22:43:38 UTC 2005

I created category trees from the Dec 30 2004 dumps for the largest
wikipedias (en/de/ja/fr/pl/nl)

You'll find them at http://eza.gemm.nl/index.html#Categories
Beware. Some of the files are huge!

Each category is listed along its shortest path to the top of the hierarchy.
Other branches that contain this category link back to there.

Circular references are detected and listed at the bottom of the page.
E.g. 'Travel > Tourism > Travel'

Separate trees exist because some categories are not categorized themselves
(or were not at Dec 30).

I might generate these trees for all wikipedias as part of the weekly stats
job, after the database changes are over (Mediawiki 1.5), which will involve
major maintenance on the stats scripts anyway.

Erik Zachte