Search found 186 matches

by Norbert
Thu Nov 25, 2021 08:19
Forum: Available Software
Topic: New functions in CRP Toolbox regarding corrections
Replies: 0
Views: 17

New functions in CRP Toolbox regarding corrections

After long time some new functions (embed, skel_crp, dl) have been included into the Cross Recurrence Plot Toolbox for MATLAB , mainly providing the corrections proposed in Kraemer & Marwan, Phys. Lett. A 383 (2019). DOI:10.1016/j.physleta.2019.125977 . skel_crp is a new function and allows to c...
by Norbert
Thu Nov 25, 2021 08:02
Forum: Applications
Topic: pss function and other methods to find proper radius for CRQA
Replies: 3
Views: 102

Re: pss function and other methods to find proper radius for CRQA

Yes, for radius I meant recurrence threshold ε. As for the research question i'm interested in analyzing the dynamics between two people performing the same movements at the same time. To this regard if I were interested to just the line of synchronization, inputting in the crqad function a lag = 0...
by Norbert
Wed Oct 27, 2021 21:47
Forum: Quantification
Topic: RR calculation using CRQAD and phasesynchro
Replies: 1
Views: 2680

Re: RR calculation using CRQAD and phasesynchro

Should be the same. I have to check. Perhaps there is another norm selected or the time series was normalised by default. Do you have a short example? I could use it to check the code.
by Norbert
Mon Oct 4, 2021 09:30
Forum: Recurrence Plot Symposium
Topic: 10th Recurrence Plot Symposium in Japan
Replies: 0
Views: 81

10th Recurrence Plot Symposium in Japan

The 10th international recurrence plot symposium will most likely by organized by the National Institute of Advanced Industrial Science and Technology in Tsukuba, Japan, in August 28-30, 2023. The venue will be in Tsukuba.

More information coming soon at http://symposium.recurrence-plot.tk/
by Norbert
Mon Oct 4, 2021 09:26
Forum: Applications
Topic: pss function and other methods to find proper radius for CRQA
Replies: 3
Views: 102

Re: pss function and other methods to find proper radius for CRQA

Hi, I guess with "radius" you mean the recurrence threshold ε? There are really many ideas out now to identify the "optimal" recurrence threshold ε. However, it really depends on the research question. If you like to compare two time series with CRP, it might be best to use simpl...
by Norbert
Wed Aug 4, 2021 21:04
Forum: Multivariate Extensions and Spatial Data
Topic: Multivariate RP
Replies: 5
Views: 15166

Re: Multivariate RP

The multivariate RP is nothing else than using the different time series as the different components of the phase space vector. Therefore, there is no difference to the standard approach, as far as I see it.
by Norbert
Wed May 5, 2021 16:22
Forum: Quantification
Topic: Dear sir! help me !About the threshold!!!
Replies: 1
Views: 1092

Re: Dear sir! help me !About the threshold!!!

The threshold selection depends on the research question and the data. If your data has many outliers or behaves like from a non-stationary process, a normalisation and using a threshold in units of the standard deviation might not be the best choice. Then consider the slecetion that preserves a pre...
by Norbert
Wed May 5, 2021 16:15
Forum: Quantification
Topic: recurrence threshold
Replies: 5
Views: 1795

Re: recurrence threshold

Dir sir: I use CRP toolbox ,i have some puzzle about the function ‘crp(x,m,t,e)’ and ‘pss’; e represent the threshold,but when i choose the norm ‘euclidean’,and set the e =2,like 'crp(x,3,1,2,'euclidean')',I noticed that there is a title on the picture ‘Dimention:3 Delay:1 threshold: 2σ’ ,i dont ko...
by Norbert
Wed Mar 3, 2021 15:24
Forum: Quantification
Topic: recurrence threshold
Replies: 5
Views: 1795

Re: recurrence threshold

Dear all, For a noisy time series, it is mentioned in the literature that the threshold should be around 5*sigma. I wanted to ask if this sigma is the standard deviation of the time series? No, it is the standard deviation of the observation noise. This threshold value (5σ) is actually much too hig...
by Norbert
Wed Jan 27, 2021 08:02
Forum: Recurrence Plot Symposium
Topic: Next RQA Workshop?
Replies: 3
Views: 3032

Re: Next RQA Workshop?

Thanks for your reply. :mrgreen: I am looking forward to this. Will I be able to submit an abstract for a poster presentation in the registration portal when it opens? ~ Aaron Yes, sure! You are warmly welcome! Send me an email with your email address to get included in the list for announcements.
by Norbert
Wed Dec 9, 2020 16:09
Forum: General Discussion
Topic: Sir, Please clarify my doubt
Replies: 1
Views: 1459

Re: Sir, Please clarify my doubt

Sir my topic of research is the nonlinear analysis of solar wind. My doubt is, “is it possible to use cross recurrence plot to study similarity in the dynamics of solar wind speed and the interplanetary magnetic field. Hi, before answering this question, we should be clear about the research questi...
by Norbert
Mon Sep 7, 2020 07:08
Forum: Recurrence Plot Symposium
Topic: 9th Recurrence Plot Symposium in Poland
Replies: 0
Views: 2594

9th Recurrence Plot Symposium in Poland

The ninth international recurrence plot symposium will be organized by the Lublin University of Technology, Poland, in September 22-24, 2021. The venue will be in Lublin.

More information:
http://symposium.recurrence-plot.tk/
by Norbert
Mon Sep 7, 2020 07:05
Forum: Recurrence Plot Symposium
Topic: Next RQA Workshop?
Replies: 3
Views: 3032

Re: Next RQA Workshop?

Hi,
yes, we plan a mixture of physical and virtual conference.
You are warmly welcome to join!
Best
Norbert
by Norbert
Mon Jan 14, 2019 19:43
Forum: Recurrence Plot Symposium
Topic: 8th Recurrence Plot Symposium in China
Replies: 1
Views: 5913

Re: 8th Recurrence Plot Symposium in China

For the next symposium in 2019, we offer a scholarship for PhD students! More info: http://symposium.recurrence-plot.tk/?a=scholarship
by Norbert
Fri Aug 31, 2018 09:47
Forum: Quantification
Topic: Theiler window for vertical structures
Replies: 1
Views: 3106

Re: Theiler window for vertical structures

This is completely right. For the measures based on vertical structures, I suggest to include the LOI and not to apply the Theiler window. This should also be noted in the explanation of the method when a publication is prepared.