What is GDCC

The competition is for software engineers, researchers, students and enthusiasts in the field of lossless data compression. The contest includes several main categories open to anyone who meets the general requirements, as well as a special category for students. We test compressors under the following scenarios:

Test 1:
Qualitative-data compression

Filtered Chinese Wikipedia DB data

In 3 categories

Test 2:
Quantitative-data compression

16-bit multispectral images, 16-bit integer and 32-bit floating point telemetry data

In 3 categories

Test 3:
Mixed-data compression

Preprocessed ARM64 executable files mixed with scientific data containing 32-bit floating-point numbers and 32-bit integers

In 3 categories

Test 4:
Small-block-data compression

Mixture of Test 1 and Test 3 data to be compressed independently in 64 KiB blocks but allowing random-access decompression in 8 KiB blocks

In 3 categories

Test 5:
Student test

Participants must generate a parameter file for the provided compressor that minimizes compressed-data size for Test 1 data

Optimize a given compressor using parameter file.

dots

Main Rules

CATEGORIES
  • 12 main categories: compress 4 different test data sets, with 3 speed brackets for each test. Participants may compete in one or more categories.
  • Student category: optimize a given compressor using parameter file.
Awards & PRIZES

• 5,000 EUR, 3,000 EUR, and 1,000 EUR awards for first, second, and third places, respectively, in all 12 main categories and the student category. Each category has its own prizes.
• 500 EUR award each for places 4–13 in the student category.
• 20,000 EUR grand prize for the winner in block-test rapid category who meets certain conditions.
• 5,000 EUR “gap” prize in all 12 main categories when the first-place competitor wins by a sufficiently large margin over the second-place competitor.

SCHEDULE

• Submit compressors beginning June 21, 2021 to join the leaderboards.
• Compressor submissions must be executable files for Windows or Linux.
• Leaderboards updated monthly (or more often)
• Deadline for new and updated submissions is November 15, 2021.
• Results to be announced by December 15, 2021.
• Prizes awarded in accordance with the final leaderboards.

COMPRESSORS
  • In all tests, the data we use for scoring is private.
  • We provide sample data, or training data, that is of the same nature and similar to, yet different from, the private test set.
  • We accept binary submissions; source codes are unnecessary unless required by library or software-block licenses on which the submitted compressor is based.
More rules & faq

Schedule

  • June

    Submit compressors beginning
    June 21, 2021 to join the leaderboards.

  • JUl-OCT

    We will be publishing intermediate results at least once a month.

  • NOVEMBER

    Deadline for new and updated submissions is November 15, 2021

  • DECEMBER

    Results to be announced by December 15, 2021.
    Prizes are given according to the final leaderboards.

Category Awards

Qualitative data

Quantitative data

Mixed data

Block

STUDENT

First place
5,000 EUR

+ 5,000 EUR IF YOUR COMPRESSOR BEATS THE SECOND PLACE BY A LARGE GAP

Second place
3,000 EUR
Third place
1,000 EUR
First place
5,000 EUR

+ 5,000 EUR IF YOUR COMPRESSOR BEATS THE SECOND PLACE BY A LARGE GAP

Second place
3,000 EUR
Third place
1,000 EUR
First place
5,000 EUR

+ 5,000 EUR IF YOUR COMPRESSOR BEATS THE SECOND PLACE BY A LARGE GAP

Second place
3,000 EUR
Third place
1,000 EUR
grand prize
20,000 eur
First place
5,000 EUR

+ 5,000 EUR IF YOUR COMPRESSOR BEATS THE SECOND PLACE BY A LARGE GAP

Second place
3,000 EUR
Third place
1,000 EUR
First place
5,000 eur
Second place
3,000 EUR
Third place
1,000 EUR
4-13 place
500 EUR
award certificate for each place

GDCC 2021 is brought to you by

logo

IT Product Line

logo

CS MSU Graphics & Media Lab Video Group

2020 Contest
results

50000 eur

total prize fund

12

competition categories by data type and processing speed

250+

applications

40

universal and image compressors

12-25%

better compression ratio than for popular reference compressors for certain categories
Strong results in all categories

Want to participate?

Fill out the form to take part in the competition

  • Peter Thamm
  • Dmitry Shkarin
  • Andreas Debski
  • Marcio Pais
  • Konstantinos Agiannis
  • Mathieu Chartier
  • Frederic Langlet
  • 1 place in 4th test: block
  • 1 place in 1st test: text
  • 1 place in 2nd test: image
  • 1 place in 3rd test: mixed
  • 2 place in 1st test: text
  • 2 place in 2nd test: image
  • 3 place in 3rd test: mixed

Still have any questions?