Author: Alvaro Jose Povoa Cardoso
Date: 12:34:58 05/11/02
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On May 10, 2002 at 18:48:20, martin fierz wrote: >On May 10, 2002 at 17:25:49, Alvaro Jose Povoa Cardoso wrote: > >>Hi Martin, >>I would like to know your opinion on LZSS for EGTB. >>LZSS is extremely fast on decompression. >>I tested a 104Mb pgn file with LZSS and it compressed to 35Mb. >>I know pgn files is not the intended purpose but do you think it has good >>aplicability for EGTB? >> >>Best regards, >>Alvaro Cardoso > >hi alvaro, > >i don't even know what LZSS is :-) >i'm currently very busy working on my program for the las vegas tournament, so >i'm not trying for better database compression at the moment. i have compressed >my database from about 37GB to 4.3GB; but it is a lossy compression scheme, >removing all positions where a capture can occurr from the database. this makes >a lot of sense because these are typically positions with "random" values. the >chinook db is compressed to 5.6GB, both mine and the chinook db use run-length >encoding. How do you remove those positions? By just storing a zero for example? Best regards, Alvaro Cardoso
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