We've created a 10% subset of training data. You can find it here: http://tunedit.org/repo/ICDM/2010/publi ... ing_10.zip
(please log in first, and you must be registered to the challenge). By the way, if you use Linux, you may try in similar cases the head
programs, which are standard command-line tools on Linux.
Thanks for good suggestion. Marcin