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I have a large sequence of numbers c.a 10000 and I want to find a priodic pattern in this sequence of numbers. Could you please point me some references or hints to do this job?
First You should determine the length of the periodic pattern. This can be easily made with a Fourier-transformation. Look for frequences with high amplitude. This are candidates for the length of the periodic pattern.
There is a bunch of possible algorithms. Wikipedia lists some here. Although the field is very wide, I hope that will give you a starting point.
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I have some times series data and I would like to use an algorithm to detect periodic events in this time series.
I read that Fast Folding Algorithm is used to detect pulsars stars, but I didnt find any example code of how it is done. Where can I find it?
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I would like to know when exactly we need to use Linq, Why it is used for and complete knowledge on it.
Please suggest me links/books for it.
Thank you.
Try starting with LINQ 101. You would find lots of examples if you just google with "LINQ".
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I am a visual kind of guy and would like to know if there is somewhere a nice big overview of Ruby. You know, like a reference poster, with object hierarchy, most common methods, etc, all in color, layed out nice and clearly...
To a beginner like me would this would be awesome...
Is there something like that out there that you use or have stumbled upon?
Check these out :
https://github.com/savini/cheatsheets/raw/master/ruby/RubyCheat.pdf
http://wtr.rubyforge.org/s101/doc/Ruby-cheat-sheet.doc
http://refcardz.dzone.com/refcardz/essential-ruby#refcard-download-social-buttons-display
And a... "comparative" approach, with cheat sheets combined for major scripting languages :
http://hyperpolyglot.org/scripting
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I am looking for example uses (or tutorials) of the record library
http://www.cs.fit.edu/~pkc/classes/ai/swi-prolog/Manual/record.html
for SWI-prolog that I can use as a template. Do you have any pointers?
Thanks,
SetJmp
There is one example of usage here in the SWI-Prolog JSON library to hold JSON options
http://www.swi-prolog.org/git/packages/http.git/blob/HEAD:/json.pl
It is pretty straightforward to use. the only pain is that you can't pull arbitrary fields off a record because they need to be accessed by _(X). Also, i do not believe any extra meta-data about the record is stored in case you want to get the field names at run time.
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I'm looking for a boo syntax sheet/reference card. A quick search on google and on boo's site didn't turn up anything, does anyone know where one is?
I'm not aware of an online reference card, but perhaps this might be close enough?
http://docs.codehaus.org/display/BOO/Keywords+with+examples
This summary is concise and has useful links, although it looks like the author got bored half way through.
http://docs.codehaus.org/display/BOO/Language+Summary