Ordinal methods: Concepts, applications, new developments and challenges

International Workshop
28 February - 4 March 2022

The year 2022 is the 20th anniversary of the seminal paper of C. Bandt and B. Pompe on permutation entropy. During this time, the new “ordinal” methodology has been developed by theoreticians and practitioners in different directions. However, many of the new concepts and approaches are not fully understood and there is also a need for a more systematic application of ordinal methods. In particular, the new developments have to be considered in the light of different and more general frameworks, such as ordinal statistics and ordinal methods in machine learning. The aim of this workshop is to bring together researchers from different disciplines to address those challenges.

Topics include

  • New theoretical results and practical applications;
  • Generalization of concepts and methods from the one-dimensional to the multidimensional case;
  • Appropriate application of ordinal methods to practical problems;
  • Optimal extraction of information from ordinal patterns,
  • General ordinal approaches based on the theories of dynamical systems, complexity systems, stochastic processes, and information;
  • Better theoretical understanding of several new variants of permutation entropy and their relationship to each other and to established measures of complexity;
  • Ordinal networks and applications;
  • Development of reliable ordinal pattern-based statistical estimation and hypothesis testing for the analysis of real-world data;
  • Use of ordinal methods in machine learning, including feature extraction on an ordinal base.

Invited speakers

Christoph Bandt (DE)
Aurelio Bariviera (ES)
Annika Betken (NL)
Laura Carpi (BR)
Debora Correa (AU)
Claudio Delrieux (AR)
Armand Fouda (CM)
Alejandro Frery (NZ)
Hiroshi Gotoda (JP)
Grzegorz Graff (PL)
Beata Graff (PL)
Tim Gutjahr (DE)
Taichi Haruna (JP)
Yoshito Hirata (JP)
Dimitris Kugiumtzis (GR)
Jürgen Kurths (DE)
Holger Lange (NO)
Walter Legnani (AR)
Klaus Lehnertz (DE)
Inmaculada Leyva (ES)
Johann Martínez (ES)
Cristina Masoller (ES)
Diego Mateos (AR)
Mariano Matilla-García (ES)
Marisa Mohr (DE)
Fernando Montani (AR)
María Muñoz-Guillermo (ES)
Milan Palus (CZ)
David Papo (ES)
Ulrich Parlitz (DE)
Evgeniy Petrov (UA)
Manuel Pulido (AR)
Haroldo Ribeiro (BR)
Alexander Schnurr (DE)
Michael Small (AU)
Miguel Cornelles Soriano (ES)
Borko Stošic (BR)
Tatijana Stošic (BR)
Piergiulio Tempesta (ES)
Christian Weiß (DE)
Massimiliano Zanin (ES)
Yong Zou (CN)
Luciano Zunino (AR)

Scientific Coordinators

José M. Amigó
(Universidad Miguel Hernández de Elche, Spain)

Karsten Keller
(Universität zu Lübeck, Germany)

Osvaldo Rosso
(University Federal of Alagoas, Maceió, Brasil)


Maria Voigt
(MPIPKS, Dresden, Germany)


The call for applications is closed.

We plan for a hybrid workshop with a number of participants on-site and the others connected remotely.

For on-site participation the registration fee is 140 Euro; costs for accommodation and meals will be covered by the Max Planck Institute.
Limited funding is available to partially cover travel expenses.

Online attendance will be possible in any case. No fee for remote participation.

Scientific Program Structure

The scientific activities start on Monday, 28th February 2022 at approx. 9 a. m. (GMT+1).
Registration for on-site participants will be possible in the evening of Sunday, 27th February 2022 as well as throughout the event.

The scientific program will close on Friday, 4th March 2022 in the afternoon (GMT+1).

The detailed scientific program of the workshop will be available in the beginning of February 2022.


How to reach us (for on-site participants)


Useful information for your way to the venue.

Contact Institute