Results 1 to 8 of 8

Thread: DARK archiver

  1. #1
    The Founder encode's Avatar
    Join Date
    May 2006
    Location
    Moscow, Russia
    Posts
    3,954
    Thanks
    359
    Thanked 332 Times in 131 Posts

    Cool DARK archiver

    Check out some excellent BWT+DC-based archiver:
    http://darchiver.narod.ru/

    The power side of its compression algorithm is very efficient sorting. Additionally, it uses some tricks like fragmentation, reverse order sorting, ...

    Sadly, but the author is gone from the data compression scene. We all had a nice conversation with him at old forum... It would be interesting to talk with him about my BWT-compressor...

  2. #2
    Member elektronika's Avatar
    Join Date
    Mar 2010
    Location
    Indonesia
    Posts
    9
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Sadly, but the author is gone from the data compression scene. We all had a nice conversation with him at old forum... It would be interesting to talk with him about my BWT-compressor...
    What do you mean by gone from the data compression scheme?

  3. #3
    Programmer kvark's Avatar
    Join Date
    Aug 2006
    Location
    Toronto, Canada
    Posts
    74
    Thanks
    1
    Thanked 1 Time in 1 Post

    Wink Author is not gone

    Hi everyone!
    Sorry for being so late...

    I'm not entirely "gone", I just switch between 3-4 research directions from time to time. At that point I had already spend too much time on compression, became almost depleted, so I moved to 3D graphics.

    The official page for my BWT efforts is here:
    http://code.google.com/p/adark/

    Bad news is that no improvement on the compression scheme has been made since the old dark-0.51 times. Just a couple of suffix sorting ideas were developed.
    Good news is ... you can find all the sources there in free access

    Cheers,
    Dzmitry

  4. #4
    Tester
    Black_Fox's Avatar
    Join Date
    May 2008
    Location
    [CZE] Czechia
    Posts
    471
    Thanks
    26
    Thanked 9 Times in 8 Posts
    Hey kvark, welcome back
    I am... Black_Fox... my discontinued benchmark
    "No one involved in computers would ever say that a certain amount of memory is enough for all time? I keep bumping into that silly quotation attributed to me that says 640K of memory is enough. There's never a citation; the quotation just floats like a rumor, repeated again and again." -- Bill Gates

  5. #5
    Programmer kvark's Avatar
    Join Date
    Aug 2006
    Location
    Toronto, Canada
    Posts
    74
    Thanks
    1
    Thanked 1 Time in 1 Post
    Thank you, Black_Fox.

    I'm happy to see this forum is still active and very alive!

  6. #6
    Member biject.bwts's Avatar
    Join Date
    Jun 2008
    Location
    texas
    Posts
    449
    Thanks
    23
    Thanked 14 Times in 10 Posts
    Quote Originally Posted by kvark View Post
    Hi everyone!
    Sorry for being so late...

    I'm not entirely "gone", I just switch between 3-4 research directions from time to time. At that point I had already spend too much time on compression, became almost depleted, so I moved to 3D graphics.

    The official page for my BWT efforts is here:
    http://code.google.com/p/adark/

    Bad news is that no improvement on the compression scheme has been made since the old dark-0.51 times. Just a couple of suffix sorting ideas were developed.
    Good news is ... you can find all the sources there in free access

    Cheers,
    Dzmitry
    Nice to see someone using BWT and DC. My code is slow but I wonder if you ever thought about using BWTS instead of BWT?

    I also think that the version I have where I have a true bijective version for DC however I never took full advantage of what should be done after the BWTS DC stages so I just convereted to to Fibonacci numbers which are easy to make bijective.

    I am sure you stuff compresses better but there may be a few tricks you missed in the DC stage. Since it should be bijective to file of numbers and its usually not represented that way.

    Please look at http://encode.ru/threads/1179-BIJECTIVE-BWTS-DC-FIB and see what you think of it.

  7. #7
    The Founder encode's Avatar
    Join Date
    May 2006
    Location
    Moscow, Russia
    Posts
    3,954
    Thanks
    359
    Thanked 332 Times in 131 Posts
    Yet another post-Soviet programmer crossed the border...

  8. #8
    Member Surfer's Avatar
    Join Date
    Mar 2009
    Location
    oren
    Posts
    203
    Thanks
    18
    Thanked 7 Times in 1 Post
    Quote Originally Posted by encode View Post
    Yet another post-Soviet programmer crossed the border...
    Just because we have most bullshit government in last 90 years(not including Eltsin)..

Similar Threads

  1. Dark Space Random Thoughts
    By Tribune in forum The Off-Topic Lounge
    Replies: 19
    Last Post: 14th March 2009, 15:22
  2. Archon & Dark sources
    By kvark in forum Data Compression
    Replies: 4
    Last Post: 13th March 2009, 03:01
  3. Dark v0.51
    By LovePimple in forum Forum Archive
    Replies: 55
    Last Post: 16th January 2007, 23:42
  4. Dark 0.50 and later:)
    By kvark in forum Forum Archive
    Replies: 28
    Last Post: 2nd November 2006, 15:43
  5. DARK - a new BWT-based command-line archiver
    By encode in forum Forum Archive
    Replies: 138
    Last Post: 23rd September 2006, 21:42

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •