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Thread: Optimal Preprocessing/Parsing for LZ?

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  1. #31
    Join Date
    Sep 2010
    Thanked 69 Times in 29 Posts
    I implemented Bulat's idea for parsing with statistics moving forward.

    That is, when you arrive at position "pos" you know the best way to arrive there, so you go back to the source of the best arrival and bring the statistics forward from there.

    My LZA :

    24700820 uncompressed
    9267278 statistics carried forward (Bulat) (LZMA-style parse)
    9315794 statistics updated only on 16k chunk boundaries (LZMA-style parse)

    for reference :
    9290222 old chain-N optimal parse at lowest level
    9431777 7zip high profile
    Last edited by cbloom; 3rd August 2016 at 21:36.

  2. Thanks (3):

    Bulat Ziganshin (13th January 2015),Cyan (26th January 2015),wgarvin (4th February 2015)

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