Calgary Challenge Update
Posted by Sachin Garg on 31st October 2005 | Permanent Link
Matt Mahoney posted this at comp.compression
I didn’t see it mentioned here but Alexander Ratushnyak won some prize money on the Calgary challenge, http://mailcom.com/challenge/ with an entry of 596,314 bytes on Oct. 25. It consists of a solid archive of 588,183 bytes, plus the decompressor (as C++ source) packed into a RAR
archive. The source is uncommented to save space but appears to be a variant of a previous entry by Przemyslaw Skibinski, which is itself a variant of PAsQDa with a tiny, built in dictionary. The latest version is an improvement of 7KB, consisting of a 4KB improvement in the
archive size and 3KB in the compressed size of the decompressor.– Matt Mahoney
October 31st, 2005 at 11:42 am
Someone looking for something more challanging can probably try hands on Mark Nelson’s Million Random Digits
http://groups.google.com/group/comp.compression/browse_thread/thread/6b112e6cc87fd19/814f265760609ee7
http://groups.google.com/group/comp.compression/browse_thread/thread/7cb284374eb99eb5/1779b046ad540e45
or the $5000 challange
http://www.geocities.com/patchnpuki/other/compression.htm#Challenge
Best wishes :-)
November 2nd, 2005 at 8:18 pm
Well I have made a bit of progress here. The million random digits aren’t quite random.
http://groups.google.com/group/comp.compression/browse_frm/thread/987e4ef26de2d7e8/5f6e78cd626577a6?q=million+random+digits+&rnum=1&hl=en#5f6e78cd626577a6
November 3rd, 2005 at 3:31 pm
Yaa, I remember that thread. :-)
November 4th, 2005 at 9:41 am
Those digits aren’t random at all. Every time I look that file … the numbers are the same as the last time I looked at them! (^: