Author: Heinz van Kempen
Date: 11:44:09 09/28/05
Go up one level in this thread
On September 28, 2005 at 14:30:31, Günther Simon wrote: >On September 28, 2005 at 14:03:03, Heinz van Kempen wrote: > >>On September 28, 2005 at 13:41:41, Uri Blass wrote: >> >>>On September 28, 2005 at 13:23:31, Heinz van Kempen wrote: >>> >>>>On September 28, 2005 at 13:15:37, Günther Simon wrote: >>>> >>>>>On September 28, 2005 at 09:30:36, Heinz van Kempen wrote: >>>>> >>>>>><<And where exactly are the games WITH comments in that page? >>>>>>I mean there are 3 thousant links there, so i'm confused.....:-) >>>>>> >>>>>>Does the: |||CEGT 40/40 (2Ghz) all games so far (> 12 Mb)||| include the >>>>>>depth,search...,etc......... or is in another file?>> >>>>>> >>>>>> >>>>>>Hi George, >>>>>> >>>>>>the games with Fritz 9 are with comments, second file from above. >>>>>> >>>>>>The 12 Mb file contains all +37000 CEGT 40/40 games up to now and is unstripped >>>>>>from comments. Otherwise the file would be 100 Mb. >>>>>> >>>>>>http://www.husvankempen.de/nunn/downloads.htm >>>>>> >>>>>... >>>>> >>>>>Hi Heinz, >>>>> >>>>>Is it possible that a lot of 'commented' games _don't_ include >>>>>the depth? >>>>> >>>>>Best regards, >>>>>Guenther >>>> >>>>Hi Guenther, >>>> >>>>as already posted that 12 Mb file with more than 37000 games does not include >>>>comments. Guess how big such a file would be with comments. >>> >>>Let see one comment >>>[%eval 7,16] [%emt 0:01:15] >>> >>>it can be compressed to 7,16,75 >>>depth is usually 10-17 and I guess that it can be compressed to average of >>>something near 3 bits. >>> >>>evaluation probably can be compressed to something near 8 bits as average(there >>>are big numbers but they are minority) and time can be compressed to 7 bits. >>> >>>total number of bits is near 18 bits per comment. >>> >>>I claim that >>>24 bits that are 3 bytes are needed for both comment and move. >>> >>>explanation: >>>If we talk about a single move then it can be compressed to 6 bits because we >>>need only move generator that generate the moves in specific order and usually >>>there are less than 64 moves so it is 6 bits per ply(if the number of moves is >>>not more than 32 then it is even only 5 bits. >>> >>>37000 games probably include something near 4,000,000 plies >>> >>>4,000,000 plies*3 byte=something near 12 Mbytes. >>> >>>My conclusion is that 12 Mbytes are enough to compress all the games with >>>comments and 3 mbytes are enough to compress all the games without comments. >>> >>>If you need more than it then the compression tools that you use are not good >>>enough(for example they probably do not translate moves in the pgn to numbers). >>> >>>Uri >> >>Hi Uri, >> >>Winzip is not good in compressing CB and Arena pgn files including comments. >>WinRAR is only a bit better here. An alternative would be .cbv files with a high >>compression rate, but not all people use the ChessBase 8 or 9. >> >>Best Regards >>Heinz > >There is a much better one especially for PGNs, so if you have lots >of big PGN files for CEGT now, you could try the free compressor by >George Lyapko. (3 times better compression than e.g. WinRar for PGN) >http://www.geocities.com/lyapko/winboard.htm > >Guenther
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