singular matrix problem

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jayjan
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singular matrix problem

Post by jayjan » Thu Sep 04, 2014 9:00 am

i wonder why when i try to calculate PLS Algorithm the system appear singular matrix problem. could u please help me..

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Hengkov
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Re: singular matrix problem

Post by Hengkov » Thu Sep 04, 2014 11:54 pm

Hi,

Singularity Matrix Problem indicate you have HIGH COLLINEARITY PROBLEM or you have same case observation value.
For solve this problem, I recommend you add sample size.

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lmrogers
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Re: singular matrix problem

Post by lmrogers » Fri Dec 04, 2015 8:56 pm

A relevant link for this discussion: http://www.talkstats.com/showthread.php ... e-function

I just resolved this issue. I encountered the singular matrix problem when attempting to bootstrap with a data set that I'd split by gender to test moderation. In my male data set, the data on 2 indicators were perfectly correlated. This is possible issue #2 on the reasons for singular matrix problems provided within PLS. To identify this issue, I ran a correlation matrix for all indicators in the model. When I identified those that were perfectly correlated, I dropped the one that had a slightly lower factor loading. I was then able to test my model.

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