FIMIX-PLS

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cringle
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FIMIX-PLS

Post by cringle » Tue Oct 04, 2005 7:14 pm

When applying FIMIX-PLS, Hahn et al. (2002) suggest using only positive values – if theoretically reasonable – for the relationships in the structural model. Is it possible to implement such restrictions into SmartPLS 2 in order to restrict the weights in the inner model as well as the variance of the latent endogenous variables for the FIMIX-PLS procedure?

Reference:
Hahn, C., Johnson, M. D., Herrmann, A. and Huber, F. (2002) Schmalenbach Business Review, 54, 243-269.

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Post by awill » Thu Oct 06, 2005 2:13 pm

Such restrictions of the segment specific relationships in the structural model might help to receive an appropriate FIMIX-PLS segmentation. I think it's possible to implement this capability in the next SmartPLS version.

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t-values in FIMIX-PLS

Post by thorsten.giesa » Fri Nov 18, 2005 8:35 am

Hello,
great work on the FIMIX-PLS program! However, I have one suggestion for a future release of smartPLS. Would it be possible to add the t-values for the path coefficients of the respective segment solutions, so one can make statements about their significance? This feature is implemented in the standard PLS routine in smartPLS and would be of great in help in interpreting the FIMIX-PLS solutions!
Thank you and keep up the good work!

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t-values in FIMIX-PLS

Post by thorsten.giesa » Tue Dec 20, 2005 7:58 am

Concerning the t-values in the FIMIX-PLS option again: Is it planned to implement this feature in the next release of smartPLS? In the meantime, I have seen that in your article: FIMIX-PLS: Methodology and Application (http://www.ibl-unihh.de/PLS05-FimixPLS.pdf) on page 5 first paragraph that you have calculated t-values for the FIMIX-PLS solution: "...analysis of FIMIX-PLS results does not give evidence for the relevance of this variable (t-statistic=0,690)". I haven't found standard deviations for the FIMIX-PLS Path Coefficients in the output, is there any other way that I can calculate them myself with the given information in the smartPLS output? Any help would be greatly appreciated!

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cringle
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Post by cringle » Tue Dec 20, 2005 10:44 am

Hi,

these t-statistics refer to the posthoc analysis by Ramaswamy et al. as proposed by Hahn et al. (viewtopic.php?t=21), pp. 262-263, and not to the FIMIX-PLS procedure. This posthoc analysis in not implemented into SmartPLS (and probably will not be because concerns exist that this method does not reliably identify explanatory variables for segmentation).

Best
Christian

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Post by thorsten.giesa » Tue Dec 20, 2005 10:59 am

Thank you for clarifying this point! As the pages prior to the one mentioned in my post before are missing from the downloadable pdf, I just assumed the t-values mentioned were regarding the FIMIX-PLS path coefficients. Nonetheless, while the posthoc analysis will not be implemented, what about the t-values concerning the path coefficients in the FIMIX-PLS Procedure? Hahn et. al (2002) clearly used those in their article on page 261, Table 5. Thanks again for clarifying!

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