Amir E. Aharoni, 17/03/2014 16:21:
Is there any known easy way to classify Wikipedia articles into a relatively small number of types?
By "relatively small" I mean no more than twenty, and by "types" I mean things that are intuitively clear to readers [...]
Your examples don't really seem "topics" to me, but as far as I remember there were some/several papers on how to classify articles by topics purely with statistical analysis of the words contained in it. Things like http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4624691; but also http://dl.acm.org/citation.cfm?id=1620887 (only read abstracts).
Nemo