M5 Online Compression Utility (README) ver 1.0.1

 Updated : 04/24/2001
Time : 11:59 AM (EST)
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Recent Comparision of LIPT with YBS, DC, RK, PPMd and PPMonstr on Calgary Corpus book1 bpc 2.18 (Excel File)
Integration of LIPT in Network Concious Text Compression System (NCTCSys)
Program to Compute Inversion Frequency Vector to exploit locality of reference generated by BWT.
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 About Online Compression
M5 Online compression utility ver 1.0.1 provides online-mechanism to compare different compression algorithms with our pre-processing steps. You have two options available in current version:
  • 1. Performs selective compression on input file. You can choose the type of compression and type of pre-processing required to be performed on the file. Standard compression algorithms are currently available on the server and we are looking forward to add some more like YBS, PPMOSTR and PPMd.

  • 2. Generates statistics and bar chart for all the compression (algorithms)methods present on the server. The statistics is on the file selected by the user. This option is mainly used for the comparision of different compression algorithms present on the server.This option is used to compare the performance of different compression algorithm with pre-processing steps on input files.
The compression process involves pre-processing input file to improve "context" information in the file. Improved context will help in achieving better compression by back-end algorithms. To learn more about how this is done check out paper LIPT : A Lossless Text Transform to Improve Compression. - Fauzia S. Awan and Amar Mukherjee.

Internet Privacy Policy

Thank you for using M5 Online Compression Utility ver 1.0.1. Your privacy is very important to us. Our policy is to collect no personal information about you when you visit our web site unless you affirmatively choose to make such information available to us.

When you visit our web site, our server automatically recoginses only the internet doman and IP address from which you accessed our site. This process does not identify your email address or other personal infromation.

We strongly recommened "not to" upload confidential files to the server while using M5 online utility.

The files uploaded for compression will not be maintained on the server for more than 12 hrs. The files generated during option 2 are deleted immediately.

If the members of the general public choose to share personal information with us by sending us a message, or filling out an electronice form, we will use the information only for the purposes authorised. Some of the information for a designated period of time to comply with the state of Florida's archiving policies, but we will not disclose information about public visitors to this site with third parties or other government agencies, unless required to do so by Florida or federal law. And if we are required to disclose information by law, we will make every effort to notify any affect paries in advance.

Only LIPT and STAR Encoding are copyrights (c) 2001-2002 of M5 Research Group, EECS, UCF.All rights reserved.
We like to thank all authors for providing us with code and manuals for different compression algorithms used on this server.