LFD Book Forum

LFD Book Forum (http://book.caltech.edu/bookforum/index.php)
-   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 11:11 AM

Re: How Many Iterations to Pick Best K-Cluster?
 
How close is the criteria for no change? ||.1||? ||.5||?

yaser 09-18-2012 11:22 AM

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 11:32 AM

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 11:51 AM

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?


All times are GMT -7. The time now is 11:33 AM.

Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
The contents of this forum are to be used ONLY by readers of the Learning From Data book by Yaser S. Abu-Mostafa, Malik Magdon-Ismail, and Hsuan-Tien Lin, and participants in the Learning From Data MOOC by Yaser S. Abu-Mostafa. No part of these contents is to be communicated or made accessible to ANY other person or entity.