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Welcome

MULTIFRACS is the French ANR grant ANR-16-CE33-0020.
January 2017 - June 2020

Consortium

ENS de Lyon, Laboratoire de Physique, CNRS UMR5672
Patrice Abry (PI)   


Université Paris Est Créteil, LAMA, CNRS UMR8050
Stéphane Jaffard   


Université de Toulouse, INPT-IRIT, CNRS UMR5505
Herwig Wendt   


CEA, NeuroSpin
Philippe Ciuciu   


News

  • [09/2018]       The paper [J14] on Self-similarity and multifractality in human brain activity has been accepted for publication in the Journal of Neuroscience Methods.

    It shows that that scale-free temporal dynamics in brain activity (recorded by MEG) are modulated from rest to task as a significant and global decrease of selfsimilarity with a reinforcement of a fronto-occipital gradient, accompanied by a significant increase of multifractality localized in regions engaged in the task.

  • [06/2018]       The new release of the Multifractal Analysis Toolbox

    has been made available on the Multifractal Website.

  • [06/2018]       The paper [J9] on Wavelet eigenvalue regression for n-variate operator fractional Brownian motion has been accepted for publication in the Journal of Multivariate Analysis.

    It proposes a the first procedure to estimate self-similarity parameters in M-components multivariate time series and studies theoretically and practically its statistical performance.

  • [04/2018]       The paper [J6] on Multifractal analysis of multivariate images using gamma Markov random field priors has been accepted for publication in the SIAM Journal on Imaging Sciences.

    It proposes a Bayesian model for the joint estimation for multifractal parameters for multivariate time series and images.

  • [01/2018]       The paper [J11] on Multivariate multifractal analysis has been accepted for publication in the Journal Applied Harmonic and Computational Analysis.

    It investigates the interest, difficulties and (counter)-intuitions in defining multivariate multifractal analysis

  • [09/2017]       Early Career Award

    Herwig Wendt of the Toulouse team received the Early Career Award of the European Association for Signal Processing (EURASIP) for ''Significant Contributions to Statistical Inference in Multivariate Multidimensional Multifractal Analysis''.

  • [05/2017]       Interview with Stéphane Jaffard on the MultiFracs project.
  • [04/2017]       The MULTIFRACS website has been launched.

Meetings

  • [10-12/09/2018] Lyon Meeting : OFBM, Multivariate MF, Neuroscience (SJ, HW, PA)
  • [09-12/07/2018] Lyon Meeting : OFBM, Multivariate MF (GD, HW, PA, RL)
  • [18-21/06/2018] Lyon Meeting : OFBM, Multivariate MF (GD, HW, PA, RL)
  • [03-04/04/2018] Lyon Meeting : HRV and MF (HW, PA, RL, R. Barbieri, G. Valenza)
  • [19-20/02/2018] Lyon Meeting : Multivariate MF, Discrete MF (SJ, HW, PA, RL)
  • [25-26/01/2018] Plenary Meeting (Toulouse) : Multivariate MF, Discrete MF, Nonconcave MF, Experiment design, Functional connectivity analysis (SJ, HW, PA, RL, VvW, DLR, PhC, PA, JML, ND, TO)
  • [08-09/01/2018] Lyon Meeting : Multivariate MF, Discrete MF (SJ, HW, PA, RL)
  • [12-15/12/2017] Toulouse Meeting : MF and fMRI, MF and MEG, heart rate variability (HW, PA, PhC, DLR)
  • [14-15/11/2017] Lyon Meeting : MF and fMRI, MF and MEG (HW, PA, PhC, DLR)
  • [12-13/10/2017] Toulouse Meeting : MF and fMRI, MF and MEG (HW, PA, PhC, DLR)
  • [13-14/09/2017] Lyon Meeting : MF and fMRI, MF and MEG (HW, PA, PhC, DLR)
  • [29-31/05/2017] Lyon Meeting : Multivariate MF, Discrete MF (SJ, HW, PA)
  • [22-23/05/2017] Toulouse Meeting : Multivariate MF (HW, PA)
  • [10-11/05/2017] NeuroSpin Meeting : Experiment design, Functional connectivity analysis (VvW, DLR, PhC, PA)
  • [25-07/04/2017] Paris Meeting : Multivariate MF, Analysis of Texts, Discrete MF (SJ, SS, HW, RL, PA)
  • [05-07/04/2017] Lyon Meeting : Project Website, Analysis of Texts (SJ, HW, RL, PA)
  • [28-30/03/2017] Toulouse Meeting: Regularized c2 in fMRI (PhC, HW, PA)
  • [25-27/01/2017]       Kick-Off

    The ANR project MULTIFRACS has been officially launched 25-27 January 2017 at IRIT laboratory, CNRS UMR 5505, Toulouse.