recognition cluster in array

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Please how do I recognize few groups Have the array?
the example is ordered but the listing would be in disorder

In the example

X....      Y
45  50    
67  49
86  49     Group 1
113 50
135 51
155 51

323 216
339 216
354 216    Group 2
375 216
291 215
406 216


501 67
520 69 
537 69     Group 3
561 71
580 71
 

544 284
560 285
584 284    Group 4
616 283

As I do for each group to show me which item belongs
Thanks for your attention and valuable time

Posted 3-May-12 20:02pm

caoc7

Updated 3-May-12 20:15pm

Sandeep Mewara

v2

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Sandeep Mewara 4-May-12 2:16am

Not clear. Can you elaborate on what are you trying to do and where are you stuck? What do you mean by 'recognize few groups that has array', what array?

Sergey Alexandrovich Kryukov 4-May-12 17:05pm

This is clear enough, but this topic is big, with no one single definitive answer. There are different approaches. Please see my answer.
--SA

Shahin Khorshidnia 4-May-12 17:25pm

Yes, SA, I didn't see your comment firstly.

caoc7 4-May-12 2:28am

I have a list of data X and Y but I have to tell the system how many groups exist according to the distance of the items of group Y.

X....Y
354 216
520 69
45 50
560 285
67 49
323 216
86 49
113 50
339 216
135 51
291 215
561 71
155 51
406 216
375 216
584 284
501 67
544 284
537 69
580 71
616 283

2 solutions

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Mohammad A Rahman · Accepted Answer · 2012-05-04T16:09:00

Data Clustering is one of the excellent method for discovering and visualizing groups of stuff in the Data mining field. It is one of the Unsupervised learning method. Though it is a vast topics I would recommend you to read Chapter 3 of Programming Collective Intelligence[^] book(if possible). This book would help you a lot in regards to this topics. Note: The example this book used based on Python language.

Anyway, beside that book please have a look few example of Data Clustering using C#,

Hope it help you a bit to get to the point :)

Sergey Alexandrovich Kryukov · Accepted Answer · 2012-05-04T11:03:00

Solution 1

This is called cluster analysis, pretty sophisticated field. You can start learning from here:
http://en.wikipedia.org/wiki/Cluster_analysis[^].

—SA

Posted 4-May-12 11:03am

Sergey Alexandrovich Kryukov

Comments

Shahin Khorshidnia 4-May-12 17:24pm

+5Good Link.

Sergey Alexandrovich Kryukov 4-May-12 17:32pm

Thank you, Shahin.
--SA

VJ Reddy 4-May-12 20:56pm

Good reference. 5!

Sergey Alexandrovich Kryukov 4-May-12 22:00pm

Thank you, VJ.
--SA

Mohammad A Rahman 8-May-12 19:36pm

Good Ref.

Sergey Alexandrovich Kryukov 8-May-12 19:46pm

Thank you, Mohammad.
--SA