Search found 183 matches

by Norbert
Mon Oct 4, 2021 09:30
Forum: Recurrence Plot Symposium
Topic: 10th Recurrence Plot Symposium in Japan
Replies: 0
Views: 34

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: 2
Views: 54

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: 15087

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: 1074

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: 1750

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: 1750

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: 2991

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: 1433

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: 2561

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: 2991

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: 5881

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: 3080

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.
by Norbert
Fri Aug 31, 2018 09:45
Forum: Quantification
Topic: Denominator for Recurrence Rate
Replies: 1
Views: 2778

Re: Denominator for Recurrence Rate

This is really a good point. When the LOI is not excluded, the denominator is N × N . There are some special cases where this definition of RR is helpful. In other applications, it can be required to exclude the LOI, then the denominator is N ( N –1). Further, a Theiler window can be required, which...
by Norbert
Fri Aug 31, 2018 09:34
Forum: Multivariate Extensions and Spatial Data
Topic: Spatial data analysis
Replies: 2
Views: 5154

Re: Spatial data analysis

As far as I know, there is no public software for it. I myself have developed a C++ code but it is only for a pilot study and I need to check again whether it is maturated enough to be used for general purpose or other data. Moreover, the code is more than 10 years old …
by Norbert
Tue Mar 6, 2018 13:42
Forum: Recurrence Plot Symposium
Topic: 8th Recurrence Plot Symposium in China
Replies: 1
Views: 5881

8th Recurrence Plot Symposium in China

The eigth international recurrence plot symposium will be organized by the Jiangsu University in Nanjing, China, in August 21-23, 2019. The venue will be in Zhenjiang.

More information:
http://symposium.recurrence-plot.tk/