- 8 main compression task: 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 search string algorithm.
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 tasks and categories:
Challenge tasks:
Open to all, industry challenges for leading experts (Task 1 & 2)
In a single category
Student tasks:
Open to students, proof of student status required (Task 3 & 4)
In a single category
Professional tasks:
Open to all, close to business value scenarios (Task 5, 6, 7 & 8)
In 3 categories
2021 prize winners of the second edition (2021)
Qualitative data
Quantitative data
Mixed data
Small-block-data
Student
1 place
2 place
3 place
Rapid
Peter Thamm, SummerLOD
Konstantinos Agiannis, fasolada
Reznov, Ijen
Balanced
Peter Thamm, BoganMoth
Xuxiali, fc
Ilya Muravyov, BCM2
high compression ratio
Zoltán Gotthardt, paq8px-lite-t1
Marcio Pais, theta
Konstantin Zaborskikh, unicodeCM_T1
1 place
2 place
3 place
Rapid
Andreas Debski, hlx21
James Bonfield, dr4j
Maksym Kovalchuk, STC
Balanced
Marcio Pais, gamma
Konstantin Zaborskikh, imgrcm_T2_B_v0
Frederic Langlet, rex22
high compression ratio
Marcio Pais, delta
Kostiantyn Lutsenko, mnk
Konstantin Zaborskikh, tarcmi_T2_H_v0
1 place
2 place
3 place
Rapid
Peter Thamm, Sweet_dreams_
are_made_of_bees
are_made_of_bees
Marcio Pais, eta
Konstantin Zaborskikh, snail_T3_R
Balanced
Marcio Pais, alpha
Konstantin Zaborskikh, T3cm_B
Xuxiali, flz
high compression ratio
Marcio Pais, beta
Marcio Pais, alpha
Peter Thamm, sao
Peter Thamm, sao
Zoltán Gotthardt, paq8px-lite-t3
1 place
2 place
3 place
Rapid
Peter Thamm, GGGB
Konstantinos Agiannis, sblock
Christian Schneider, RanzTape
Balanced
Marcio Pais, epsilon
Peter Thamm, FAW
Konstantinos Agiannis, sblock_balanced
high compression ratio
Marcio Pais, zeta
Peter Thamm, FAW
Frederic Langlet, librex43
1 place
2 place
3 place
Kostiantyn Lutsenko
Maksym Kovalchuk
Zoltán Gotthardt
Christian Schneider
Christian Schneider
Main Rules
CATEGORIES
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 May 01, 2023 to join the leaderboards.
• Compressor submissions must be executable files working on a provided virtual machine.
• Leaderboards updated every 2 days (at least).
• Deadline for new and updated submissions is September 30, 2023.
• Results to be announced by October 30, 2023.
• 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.
Schedule
-
May
Submit compressors beginning
May, 2023 to join the leaderboards. -
May - September
We will be publishing intermediate results at least every 2 days.
-
September
Deadline for new and updated submissions is September 30th, 23:59 (CEST), 2023
-
October
Final results to be announced by October 30th, 2023.
Prizes are given according to the final leaderboards.
Take a first step
Submit compressors beginning May 2023 to join the leaderboards
Participate
Please read the rules before participating
BOARD OF EXPERTS OF 3RD EDITION OF THE GLOBAL DATA COMPRESSION COMPETITION
Professor Wen Gao, Peking University, China.
Boya Chair Professor and Director of Faculty of Information and Engineering Sciences at Peking University (China). Served as Vice president of National Natural Science Foundation China (NSFC) and president of China Computer Federation (CCF). Deputy Director of China National Standardization Technical Committees. He works in the areas of multimedia and computer vision, including video coding, video analysis, multimedia retrieval, face recognition, and multimodal interface.
Professor Shmuel Tomi Klein, Bar Ilan University, Israel.
Professor at Bar Ilan University (Israel). His research interests are Lossless Data Compression, Information Storage and Retrieval, Text Algorithms, and Computational Linguistics.
Professor Michael W. Marcellin, University of Arizona, USA.
Regents Professor, Faculty Fellow, and Honors Professor at University of Arizona (United States of America). His research interests are Digital Communication and Data Storage Systems, Data Compression, and Signal Processing.
Professor. Dmitry Vatolin, Lomonosov Moscow State University, Russia.
Head of ML/DL video processing, compression, and quality research lab at Lomonosov Moscow State University (Russia). His research interests are video and image processing and compression, and multimedia data processing.
Professor Gonzalo Navarro, Universidad de Chile, Chile.
Professor at University of Chile (Chile). His research interests are Design and analysis of algorithms and data structures, Compressed data structures, Text databases, Information retrieval, and Metric databases.
ORGANIZERS OF 3RD EDITION OF THE GLOBAL DATA COMPRESSION COMPETITION
Professor Serra Sagristà, Universitat Autònoma de Barcelona, Spain.
Joan Serra-Sagristà received the Ph.D. degree in computer science from Universitat Autònoma Barcelona (UAB), Spain, in 1999. He is currently a Full Professor at Department of Information and Communications Engineering, UAB. He is the Head of the Group on Interactive Coding of Images (GICI) since 2003 and the Head of the Department since 2018. From September 1997 to December 1998, he was at University of Bonn, Germany, funded by German Academic Exchange Service (DAAD) and by Catalan Savings Bank "La Caixa". His current research interests focus on source coding / data compression, with special attention to data coding for remote sensing applications. He serves or has served as Senior Area Editor for IEEE Trans. on Image Processing, as Associate Editor for IEEE Trans. on Geoscience and Remote Sensing, IEEE Trans. on Image Processing, SPIE Journal of Electronic Imaging, among others, and as Program Committee co-chair for IEEE Data Compression Conference, among others. He has co-authored over 150 publications. He was the recipient of the Spanish Intensification Young Investigator Award in 2006.
Doctor Hernández Cabronero, Universitat Autònoma de Barcelona, Spain.
Miguel Hernández-Cabronero received the B.Sc. degrees in computer science and in mathematics from the Universidad Autónoma de Madrid, Madrid, Spain, in 2010, and the M.Sc. and Ph.D. degrees in computer science from the Universitat Autònoma de Barcelona, Spain, in 2011 and 2015, respectively. He has held postdoctoral research positions at the University of Warwick, Coventry, U.K., and the University of Arizona, Tucson, AZ, USA. Since April 2019, he is with the Universitat Autònoma de Barcelona. His research interests include data compression and signal processing. He has co-authored multiple papers in these areas and has also served as a Reviewer for several journals and conferences in the field.
Associate Professor Bartrina Rapesta, Universitat Autònoma de Barcelona, Spain
Joan Bartrina-Rapesta received the B.Sc., B.E., M.S., and Ph.D. degrees in computer science from the Universitat Autònoma de Barcelona (UAB), Spain, in 2002, 2004, 2006, and 2009, respectively. He obtains his M.S. and Ph.D. degree with highest honors from UAB. He was awarded with a doctoral fellowship from UAB. He participates as a reviewer for magazines and symposiums, has (co)authored numerous papers in journals and conferences, and has guided Ph.D. students. From 2012 to present, he holds an associate professor position with the Department of Information and Communications Engineering in the UAB. His research interests include a wide range of image coding topics, computing, and transmission.
Category Awards
JPEG Recompression
LPAQ8 Improvement
String Search
Move-To-Front
Qualitative Data
Quantitative Data
Mixed Data
Block Data
Single place
20,000 EUR
Single place
20,000 EUR
First place
5,000 EUR
Second place
3,000 EUR
Third place
1,000 EUR
4-8 place
500 EUR
First place
5,000 EUR
Second place
3,000 EUR
Third place
1,000 EUR
4-8 place
500 EUR
First place
6,000 - 4,000 EUR
Second place
4,000 - 2,000 EUR
Third place
1,000 EUR
First place
6,000 - 4,000 EUR
Second place
4,000 - 2,000 EUR
Third place
1,000 EUR
First place
6,000 - 4,000 EUR
Second place
4,000 - 2,000 EUR
Third place
1,000 EUR
First place
6,000 - 4,000 EUR
Second place
4,000 - 2,000 EUR
Third place
1,000 EUR
The 3rd Edition of GDCC is brought to you by
Universitat Autònoma de Barcelona
DATA STORAGE Product Line
2021 Contest
results
202,000 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
See more about previous contests
Still have any questions?
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