Yesterday we organised a special session on #recurrence_plot Analysis at the 45th Benelux Meeting on Systems and Control (BMSC 2026) in Lommel, Belgium.

Using the same code for the energy-efficent RQA (from the paper doi.org/10.1140/epjs...) I found that the new Julia version 1.12.2 allocates more memory and is perfmoring slower than the previous version. 🤔

Updated speed comparison on #recurrence_plot calculations:
github.com/pucicu/RP_Sp...
(the winner is AccRQA by Karel Adamek! pypi.org/project/accr...)

Leveraging temporal features of the divergence quantifier of recurrence plot to detect chaos in conservative systems - The European Physical Journal Special Topics The recurrence-based divergence quantifier (DIV), traditionally applied to dissipative systems, is shown here to be an effective finite-time chaos indicator for conservative dynamics. We benchmark its...

Second paper in the special issue "Recurrence-Based Methods Across Disciplines: From Theory to Practice" published:
"Leveraging temporal features of the divergence quantifier of #recurrence_plot to detect chaos in conservative systems"
doi.org/10.1140/epjs...

"Quantitative correlation of Lower Silurian carbonate facies in Lithuania: insights from carbon isotopes and cross #recurrence_plots"
Ireviken and Mulde excursions showed spatial-temporal coherence across Lithuania
www.geology.cz/bulletin/con...

"Carbonate facies evolution, bio- and carbon isotope stratigraphy through the Ludfordian (Silurian) on the shelf of Baltica (Lithuania)" Silurian shelf deposits analyzed via cross #recurrence_plot; carbon isotope excursion identified with microbial carbonates
www.geology.cz/bulletin/con...

Chromatic recurrences applied to joint walking time series of a blind mother–child dyad - The European Physical Journal Special Topics The navigation of urban environments by blind adults and children is a complex activity. While research on blind people’s navigation has often focused on assistive technologies, less attention has bee...

First paper of the special issue "Recurrence-Based Methods Across Disciplines: From Theory to Practice" published: "Chromatic recurrences applied to joint walking time series of a blind mother–child dyad" using a special color-encoded #recurrence_plot

doi.org/10.1140/epjs...

Finding Repeated Structures in Time Series: Algorithms and Applications: A Unifying View of Time Series Motifs/Shapelets/Chains and Similar Primitives | Proceedings of the 31st ACM SIGKDD Conference on Knowledge Discovery and Data Mining V.2 You will be notified whenever a record that you have chosen has been cited.

Interesting summary (or even review) of methods to find recurring patterns in data: "Finding Repeated Structures in Time Series: Algorithms and Applications: A Unifying View of Time Series Motifs/Shapelets/Chains and Similar Primitives" – related to #recurrence_plot analysis
doi.org/10.1145/3711...

MRN-based connectedness: A nonlinear approach for capturing systemic risk dynamics in financial systems:

Financial systemic risk measured via multiplex #recurrence_networks; nonlinear dependencies captured without strong assumptions, outperforming VAR methods doi.org/10.1016/j.na...

We have used #recurrence_plot based methods to study the "High predictability potential of highly synchronized widespread floods in monsoon regions" – useful approach for forecasting future widespread flood events.
doi.org/10.1016/j.jh...

Recurrence dynamics and nonlinear system analysis of choral singing - Nonlinear Dynamics This study investigates the interplay of cardiac, respiratory, and vocal activity during choral singing using recurrence quantification analysis (RQA) to capture underlying nonlinear dynamics. It was ...

Recurrence dynamics and nonlinear system analysis of choral singing: Choral singing dynamics analyzed via #recurrence_plot RQA; respiration led vocal-cardiac coupling with increased synchronization, varying by unison vs. part singing conditions
link.springer.com/article/10.1...

Qualitative characteristics, sparse identification of nonlinear dynamics, and new analytical results of the coupled nonlinear Helmholtz equations - Nonlinear Dynamics The Helmholtz equation (HE) is comprised of two partial differential equations that illustrated wave propagation in a medium, especially for situations where the wavelength is much smaller than the sp...

Coupled nonlinear Helmholtz equations analyzed via bifurcation, chaos, and #recurrence_plots: Qualitative characteristics, sparse identification of nonlinear dynamics, and new analytical results of the coupled nonlinear Helmholtz equations link.springer.com/article/10.1...

Amazing experiment: Lemon billiard chaos validated experimentally via Arduino robot and #recurrence_plot analysis.
"Mixed-phase space of an active particle in experimental lemon billiards"
journals.aps.org/pre/abstract...

When using recurrence microstates from a #recurrence_plot we might wonder which kind of relationships they represent. We did a closer look in our recent study "Recurrence patterns correlation" journals.aps.org/pre/abstract...

Should medical teachers spend more time modelling or coaching students? A dual eye‐tracking and randomised controlled study on peer instruction in sonography When first introducing new procedural skills, direct sensorimotor experience with guided support appears more beneficial than extended observation.

Procedural learning differences between modelling and coaching were noted in medical education, with JVA linked to success. Teacher-student visual synchronisation was quantified via cross #recurrence_plot analysis.
asmepublications.onlinelibrary.wiley.com/doi/10.1111/...

Infrastructure-Free Indoor Localization for Cultural Heritage Sites Indoor positioning systems are crucial for preserving and promoting cultural heritage sites by providing visitors with accurate location information and real-time exhibit details. These systems also o...

Infrastructure-free indoor localization achieved! Accurate positioning is enabled by using #recurrence_plot to extract complex patterns from magnetic field data, allowing reliable landmark classification via deep learning.
ieeexplore.ieee.org/document/109...

Comprehensive analysis of singing bowl vibrations: nonlinear time series, network, and spectral approaches - Indian Journal of Physics The present work investigates the vibrations of the traditional singing bowl (SB), analyzing its damped and undamped beat sounds through spectral, nonlinear time series, recurrence, and complex networ...

Singing bowl vibrations were analyzed with #recurrence_plot revealing chaotic damped dynamics vs. regular undamped patterns; beat frequencies identified for potential therapeutic applications. link.springer.com/article/10.1...

These are the icy mountains of Pluto. It took 9 years to get these magnificent images… and 4.8 billion kilometers.

A novel geographic origin identification method based on multi-segment recurrence plot coding and residual attention mechanism In this study, a novel geographic origin identification method is proposed, combine with multi-segment Recurrence plot coding and residual attention mechanism to enhance the performance of apple ge...

Apple geographic origin was identified with 96.9% accuracy using multi-segment near-infrared spectra converted to images via #recurrence_plot coding with CNN. www.tandfonline.com/doi/full/10....

Investigating Complex Dynamics in Eye-Aspect-Ratio of Expert Tetris Players Using Recurrence Quantification Analysis Expert video game players exhibit unique behaviors compared to their less experienced counterparts. Such behaviours may also influence physiological aspects such as blinks and eyelid movements. In thi...

Complex eyelid dynamics in Tetris players analyzed with #recurrence_plot: expert Tetris players display more complex patterns in their eyelid behaviour.
ieeexplore.ieee.org/document/111...

Line graph comparing computation time (in seconds, log scale) versus data length N (log scale) for five Recurrence Quantification Analysis (RQA) methods: RQA_RP, RQA_woRP, RQA_samp, RQA_samp², and RQA microstates. The graph shows that RQA_samp and RQA microstates consistently require the least computation time, while RQA_RP requires the most, with all methods increasing in time as data length grows.

Inspired by recurrence microstates, I developed an efficient, sampling-based approach for recurrence quantification analysis, significantly reducing computation time – and, consequently, energy consumption. Published today open access. #recurrence_plot
doi.org/10.1140/epjs...

Another efficient approach proposed: RQA measures were computed directly from time series using random sampling, reducing runtime, memory usage, and energy consumption while maintaining accuracy. #recurrence_plot
link.springer.com/article/10.1...

Dynamical systems were classified using #recurrence_plot microstate probabilities as ML features, reducing dimensions while improving accuracy and computational efficiency. link.springer.com/article/10.1...

CALL FOR PAPERS – special Issue of the European Physical Journal – Special Topics:

Quantum Computing and Musical Creativity: Exploring new Intersections

Deadline: 1 February 2026

Details: isqcmc.org/epj-st

Maria Mannone, OCH, Paulo Vitor Itaboraí

Recurrence-based characterization of model shadowability in the presence of unstable dimension variability Recurrence-based characterization of model shadowability in the presence of unstable dimension variability, Fávaro, Vitor H. A., Marwan, Norbert, Kurths, Jürgen, Grebogi, Celso, Viana, Ricardo L.

New study out: We studied unstable dimension variability in kicked double rotor; recurrence properties shown robust for statistical analysis despite trajectory unpredictability #recurrence_plot Joint work with our friends from UFPR in Curitiba
doi.org/10.1209/0295...

Künstliche Intelligenz in der Begutachtung

DFG erlaubt Einsatz von KI in der Begutachtung.

Wenn wir jetzt noch die AI dazu kriegen, die komplette Forschung zu machen, haben wir den Menschen komplett von der Last des Forschungsprozzeses befreit und er kann sich komplett auf wichtige Dinge wie Reisekostenerstattungsanträge konzentrieren.

Small sample learning classifies Parkinson’s disease patients based on their walking behavior Parkinson’s disease (PD) is a progressive neurodegenerative disorder characterized by motor and non-motor symptoms that impair gait and daily activities. In thi

Parkinson's disease was classified with ~100% accuracy using #recurrence_plot triangle patterns; specific patterns distinguished healthy from pathological gait dynamics.
doi.org/10.1063/5.02...

Advanced Lipreading by combining raw lip landmark trajectories with the #recurrence_plot approach. By fusing temporal and structural dynamics, this approach improved generalization and speaker-independent recognition, outperforming baselines using various datasets. www.mdpi.com/1099-4300/27...

pypi.org/project/pyna...

pynamicalsys: A Python toolkit for the analysis of dynamical systems Since Lorenz’s seminal work on a simplified weather model, the numerical analysis of nonlinear dynamical systems has become one of the main subjects o…

New Python package allowing #recurrence_plot analysis:
"pynamicalsys: A Python toolkit for the analysis of dynamical systems"
Paper: www.sciencedirect.com/science/arti...