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-   The Final (http://book.caltech.edu/bookforum/forumdisplay.php?f=138)
-   -   How Many Iterations to Pick Best K-Cluster? (http://book.caltech.edu/bookforum/showthread.php?t=1582)

DavidNJ 09-18-2012 12:11 PM
Re: How Many Iterations to Pick Best K-Cluster?
 
How close is the criteria for no change? ||.1||? ||.5||?

yaser 09-18-2012 12:22 PM
Re: How Many Iterations to Pick Best K-Cluster?
 
Quote:
Originally Posted by DavidNJ (Post 5511)
How close is the criteria for no change? ||.1||? ||.5||?
No change at all. Same clusters from iteration to iteration.

AdrienL 09-18-2012 12:32 PM
Re: How Many Iterations to Pick Best K-Cluster?
 
You don't need a lot of runs or a lot of test points to get good results :)
My tests took ~3 minutes per test (you only need 3) and gave me the good answers for that part of the final.

DavidNJ 09-18-2012 12:51 PM
Re: How Many Iterations to Pick Best K-Cluster?
 
Each data set has 100 entries. I run the test 500 times, each creating a new training and test data set. I compute a new set of centroids for each new new training set. Then evaluate the result.

What is the tolerance between two Eins or 2 Eout whether they are the same?


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