Search found 194 matches

by Norbert
Tue Jan 22, 2008 16:40
Forum: Bibliography
Topic: New publications
Replies: 5
Views: 89583

Re: New publications

Hello Rajesh, thanks for pointing to some problems. However, it is still unclear, where you have found the error, because the link you mentioned is just a web site using frames. Could you please send us the URL on which the "error" occurred? You can find it by opening the frame in a separa...
by Norbert
Fri Nov 9, 2007 10:45
Forum: Available Software
Topic: joint recurrence plot software
Replies: 6
Views: 23479

Re: joint recurrence plot software

First, I forgot to mention that you can also use the "commandline recurrence plot" tool, which allows to calculate RQA from bivariate JRPs. However, for your purpose it could be more interesting to compare the diagonal-wise computed RR of the two data series, as it is performed to study ph...
by Norbert
Mon Nov 5, 2007 16:00
Forum: Available Software
Topic: joint recurrence plot software
Replies: 6
Views: 23479

Re: joint recurrence plot software

Can you use Matlab? Then you could use the CRP toolbox. Using this toolbox and with few lines of code you can compute RQA of JRPs. But may I ask why you need to compute the RQA measures from JRPs? What is your goal?

Norbert
by Norbert
Fri Oct 26, 2007 14:42
Forum: Recurrence Plot Symposium
Topic: 3rd RP Workshop - Locations
Replies: 6
Views: 22657

Re: 3rd RP Workshop - Locations

I would suggest to have it every two years. Thus your suggestion fits well.
by Norbert
Wed Oct 10, 2007 15:19
Forum: Recurrence Plot Symposium
Topic: 3rd RP Workshop - Locations
Replies: 6
Views: 22657

Re: 3rd RP Workshop - Locations

Hi Raphael,

I love the idea to move the workshop to a more focused view, i.e. that the next workshops are more dedicated to special topics.

Thanks for your suggestion of Montreal. This would also be a great location.
I hope that we have also some further comments on that issue.

Best regards
Norbert
by Norbert
Fri Oct 5, 2007 23:05
Forum: General Discussion
Topic: Complex data
Replies: 2
Views: 7712

Re: Complex data

Dear Adrian,

you can try the command crp2, which allows to compute a recurrence plot from a multicolumn vector, representing the phase space vectors, or, as in your case, the two components real and imaginary part.

Best regards
Norbert
by Norbert
Tue Oct 2, 2007 16:25
Forum: Recurrence Plot Symposium
Topic: 3rd RP Workshop - Locations
Replies: 6
Views: 22657

3rd RP Workshop - Locations

During the 2nd Workshop we had a lot of suggestions for the place of the next RP workshop. Here I list these suggestions:
  • Krakow (Poland)
    Peking (China)
    Volos (Greece)
    Aberdeen (UK)
    Sao Jose dos Campos (Brazil)
Perhaps I missed some place or mixed it up. Let's discuss.

Norbert
by Norbert
Wed May 9, 2007 08:46
Forum: General Discussion
Topic: Patents for RP software
Replies: 0
Views: 15764

Patents for RP software

I have just found out that some wit has submitted a patent for a software, representing a kind of a recurrence plot or distance matrix: US Patent 6,195,103, by Stewart, Hugh Bruce Volatility plot and volatility alert for display of time series data A computer software system for displaying time seri...
by Norbert
Mon Feb 12, 2007 11:11
Forum: Recurrence Plot Symposium
Topic: 2nd Recurrence Plot Workshop in Siena
Replies: 0
Views: 24209

2nd Recurrence Plot Workshop in Siena

2nd International Recurrence Plot Workshop Siena 20th anniversary of recurrence plots University of Siena, Center for the Study of Complex Systems September 10-12, 2007 Twenty years after the introduction of recurrence plots by Eckmann et al., the 2nd recurrence plot workshop will be held in the be...
by Norbert
Fri Dec 8, 2006 14:58
Forum: Recurrence Plot Symposium
Topic: Next RP workshop
Replies: 9
Views: 30485

The 2nd RP workshop will be held in Siena a September, 10-12, 2007. Please visit the workshop website for further information:
http://www.recurrence-plot.tk/ws.php
by Norbert
Mon Jul 17, 2006 08:36
Forum: Recurrence Plot Symposium
Topic: Next RP workshop
Replies: 9
Views: 30485

After visiting Angelo in the very beautiful Siena, I also suggest to organise the next RP workshop there. We intend that the meeting would be in September 2007. Note that it would be an anniversary, because of 20 years of JP Eckmann's paper in Europhysics Letters. We look forward to meet all of you ...
by Norbert
Tue May 30, 2006 07:29
Forum: Multivariate Extensions and Spatial Data
Topic: Multivariate RP
Replies: 5
Views: 27744

You could utilise joint recurrence plots (JRP), which are real multi-variate tools. Although in publications the JRPs are used as bi-variate tools, do not hesitate to apply them as multi-variate tools. Have also a look at the comments and suggested literature at http://forum.recurrence-plot.tk/viewt...
by Norbert
Mon Apr 3, 2006 11:59
Forum: Applications
Topic: EEG
Replies: 11
Views: 46726

I could bge that the signals will be modelled in diferent embedding dimensions. I recon that it would be best to measure this first before continuing these speculative questions (:=))) but anyhow even if the embedding dimension for the model should differ could chose the one of the most direct sign...
by Norbert
Mon Apr 3, 2006 11:56
Forum: Quantification
Topic: How to find out which system leads the other by using CRPs
Replies: 3
Views: 19295

How to find out which system leads the other by using CRPs

In order to find out which system drives the other, from the CRP you could compute a RQA measure defined diagonal-wise (i.e. not for the entire RP but only for the k th diagonal parallel to the LOI), e.g. RR( k ). The measure RR( k ) or RR( -k ) means the recurrence density in the diagonal above or ...
by Norbert
Thu Mar 30, 2006 07:44
Forum: Applications
Topic: EEG
Replies: 11
Views: 46726

But what about the problem if both signals do not have the same embedding dimension ? Can You still use CRP ? This is exactly the problem. The purpose of CRPs is to compare the states of two processes, what means that the states represent the same physical process, i.e. the data should have the sam...