Constant term

Frequently asked questions about PLS path modeling.
Post Reply
puck16
PLS Junior User
Posts: 3
Joined: Tue Aug 15, 2006 2:46 pm
Real name and title:

Constant term

Post by puck16 » Tue Jun 03, 2008 9:27 am

Dear all,

Is it possible to include a constant term/intercept for each PLS regression equation in the structural model? If so, can anyone tell me how?

Many thanks,
Sandra

User avatar
Diogenes
PLS Super-Expert
Posts: 905
Joined: Sat Oct 15, 2005 5:13 pm
Real name and title:
Location: São Paulo - BRAZIL
Contact:

Post by Diogenes » Tue Jun 03, 2008 6:51 pm

Hi Sandra,
SmartPLS works with standardized variables,
in this way the constants will be zero.

One idea is to copy/paste the unstandardized LV scores to Excel or SPSS and compute the regression there. The standardized results (betas) will be a little different from SmartPLS.

Best regards.
Bido

puck16
PLS Junior User
Posts: 3
Joined: Tue Aug 15, 2006 2:46 pm
Real name and title:

Post by puck16 » Thu Jun 05, 2008 3:55 pm

Dear Bido,
Thanks for the useful information.
Sandra

randylaw
PLS Junior User
Posts: 2
Joined: Fri Jun 01, 2018 9:15 pm
Real name and title: Randy Law, Co-Founder of Analytics and Insights Matter

Re: Constant term

Post by randylaw » Fri Sep 07, 2018 8:31 pm

Hello,

It is understood that there is no constant in the standardized solution, but I would like to obtain the constant term to use with the raw regression weights that come from the IPMA procedure to create the full regression equation. How would I do that?

Thanks!

Randy

jmbecker
SmartPLS Developer
Posts: 879
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: Constant term

Post by jmbecker » Sat Sep 08, 2018 11:47 am

You should copy the undstandardized latent variable scores from the IPMA (IPMA > Latent Variables > Unstandardized) into SPSS, Excel or some other software that can run normal regression analysis.
You should get the same results for the path coefficients as in (IPMA > Path Coefficients > Unstandardized), but in addition you will also get the intercept.
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Ja ... v=hdr_xprf
GoogleScholar: http://scholar.google.de/citations?user ... AAAJ&hl=de

Post Reply