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Thread: YZX new LZKS compression!

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    YZX new LZKS compression!

    New YZX v. 0.01 archiver-compressor
    - is based on my LZKS method (LZ77 family)!
    - very good compression!
    - good decompression speed!
    please test it! Hi!

    System requirements
    option -b1 comp. (106MB) - dec. (13 MB)
    option -b5 comp. (750MB) - dec. (133 MB)
    Attached Files Attached Files
    Last edited by Nania Francesco; 4th May 2010 at 03:34.

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    Nice, thanks.

    btw, I see there's a shout-out to Flashzip on the help screen!

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    http://mattmahoney.net/dc/text.html

    Added yzx, plzip, fp8_v1 (enwik8 only), and bsc 2.00. I noticed that yzx displays options for flashzip but the -c and -m options have no effect.

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    Member Fu Siyuan's Avatar
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    Hi Nania , can you make some explanation about your LZKS method?

    It seems use LZ and a little heavy statistic model.

    Performance on text is good -- both ratio and speed.


    But LZ has bug.

    Try to compress a file which contains only one kind char. Like 64*MB 'a' , then it takes long time in both compression and decompression. I infer the LZ layer doesn't work in such case.

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    LZKS young engine!

    The algorithm LZKS, that belongs sure to the family LZ, naturally uses for the search of the "best match" of the Hash as naturally the your fantastic CSC, (nevertheless I don't understand how come your last version doesn't have great performances in the text files) and as perhaps Nanozip. Unlike packet, CSC etc. with YZX I am trying to adapt the search of the "best Match" to the type of file. The algorithm is still very sour and he can be improved I hope a lot. I hope that you can open the source of your CSC. As I have done with everybody, I will do with you.. I don't have commercial finality (at least as I begin).. but especially of search.. if you want can contact me for help and collaboration! Thanks for Bug detection!

    for Matt... I don't understand because doesn't activate yourself all the options, can make to know me if him ago with all the files! Thanks so much!

    p.s. Excuse me for descriptions error's in YZX !
    Last edited by Nania Francesco; 4th May 2010 at 11:36.

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    Corrected bug in compression!

    New YZX v. 0.02 archiver-compressor
    - Corrected bug in compression!

    please test it! Hi!
    Attached Files Attached Files

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    Can you tell me best options for enwik9?

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    What are the valid switches for YZX ?
    The program displays :
    Code:
    YZX v.0.02 copyright (C) 2010 By Nania Francesco Antonio
    Usage: YZX <command> -<switch ..> <archive> <files...> <in path> <out path>
    .....
    <Switches>
     r                Recurse subdirectories
     s                Solid Mode ON
     v                Verbose Mode
     m                [default -m1] Compression Method (-m1 ... -m2)
     c                [default -c3] Max match keys     (-c1 ... -c8)
     b                [default -b3] Buffer Read/Write  (-b1 ... -b5)
    
    < Examples of compression >
    YZX a c:\archive c:\infile
    YZX a -m0 -b1 -c2 c:\archive c:\infile
    ......
    
    It seems that -m0 is invalid.
    Are the other 3 switches -m.. , -c.. and -b.. ?
    Thanks in advance !
    Keep up making good compressors/archivers !

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    Excuse me Matt for delay!

    The best option is:

    -m2 -c8 -b5
    example:
    YZX a -m2 -c8 -b5 test.flz c:\enwik9
    Hi Matt ! Thanks!

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    Those options work better (but slower). http://mattmahoney.net/dc/text.html#2300

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    Thanks for test!

    Hi Matt ..
    thanks for test of YZX! Excuse me for delay .. problems of my job!

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    New release is online

    New YZX v. 0.03 archiver-compressor

    - Low Memory for compression MAX 390 MB!
    - extended MAX BUFFER to 256 Mb
    - Fast and optimal match search method !
    Attached Files Attached Files

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    Member Fu Siyuan's Avatar
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    The "AAAAAAAA..." repeated string compression bug finally fixed in this version.

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    YZX v.0.04 released

    YZX v.0.04 is online

    - Good improvements in compression!
    - More faster in compression !

    only from:
    http://heartofcomp.altervista.org/

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    There is no link to yzx on http://heartofcomp.altervista.org/ that I can find but it is http://heartofcomp.altervista.org/YZX.zip which I linked from my test results at http://mattmahoney.net/dc/text.html#2300
    v0.02 still uses the most memory and gets the best compression.

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    1. Congratulations Nania

    Your new Compressor YZX version 0.04
    works faster and compresses better than version 0.03
    ---
    2. But for me it seems your wonderful programs RINGS v.1.3 and RINGS v.1.5c
    and the new bsc 2.1.0 from Ilya.Grebnov@libbsc.com
    (i use the mode "-m2 = Sort Transform of order 5")
    works faster and compresses better than your current YXZ - archiver
    ---
    3. Would it be possible to integrate into your new YXZ - archiver
    the algorithm from your RINGS v.1.3 / RINGS v.1.5c
    or the fast algorithm from bsc "mode -m2" ?
    ---
    4. best regards
    ===
    === ===
    ===
    1. Congratulazioni Nania

    Il vostro nuovo compressore YZX versione 0,04
    opere pi? rapido e comprime meglio di versione 0.03
    ---
    2. Ma per me sembra che i vostri
    programmi meraviglioso RINGS v.1.3 e RINGS v.1.5c
    e la nuova 2.1.0 BSC da Ilya.Grebnov @ libbsc.com
    ("-m2 = Sort Transform of order 5")
    opere pi? veloce e comprime meglio il tuo yxz - archiver
    ---
    3. Sarebbe possibile integrare nel vostro nuovo yxz - archiver
    l'algoritmo dal tuo v.1.3 ANELLI / RINGS v.1.5c
    o l'algoritmo pi? veloce dalla BSC "mode-m2"?
    ---
    4. Con i migliori saluti

  17. #17
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    Hi joerg!

    Thanks for congratulations!
    Rings method in YZX is possible in the future? Yes but not sure !
    Is possible to integrate Flashzip and YZX in one archiver with BWT compression method included !
    All is possible !


    They are to job in order to create very more powerful YZX! I do not know its limits well! Special thanks for Fu syuan for its councils!
    P.S. Thanks for all test Matt and Sami Runsas
    Last edited by Nania Francesco; 27th May 2010 at 21:33.

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    New version 0.11 released

    YZX v.011 released
    - 10 method's of compression (0 fast - 9 slow)
    - more faster in compression/decompression!
    - better compression !

    only from :
    http://heartofcomp.altervista.org/YZX/home.htm

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    can't compress files without extension like "book1"

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    @Matt
    Thanks for all test !
    .... Please if possible test ZCM v.0.03 (the link is verified)!
    @Sebastian
    The core (archiver) of YZX is derived from free archiver of Sami Runsas ! Is case sensitive ! enwik8 is not with extension!
    Best Regards for all!

  22. #22
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    OK, zcm is the right version now. http://mattmahoney.net/dc/text.html#1693

  23. #23
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    Excuse me for delay!

    Thanks Matt for test of ZCM v.0.03!
    Excuse me for delay! my Job!
    Best Regards!

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