PLS PREDICT RESULT

Frequently asked questions about PLS path modeling.
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norhafiz83
PLS Junior User
Posts: 3
Joined: Sun Nov 25, 2018 9:59 am
Real name and title: Nursaadatun Nisak binti Ahmad

PLS PREDICT RESULT

Post by norhafiz83 » Sat Dec 01, 2018 4:29 am

Hi PLS experts,

I have conducted a PLS Predict analysis test on the final data of my study (there are two dependent variables in my study).
The results of the analysis showed that one of dependent variables is negative in value. Thus, here I would like to ask three questions
with regard to the result:

1. Why do the negative result happen?
2. How do we solve it?
3. What is the best way for me to report it in my thesis?

Thank you in advance for your attention and for your sharing of information.

NISA

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cringle
SmartPLS Developer
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Joined: Tue Sep 20, 2005 9:13 am
Real name and title: Prof. Dr. Christian M. Ringle
Location: Hamburg (Germany)
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Re: PLS PREDICT RESULT

Post by cringle » Mon Dec 03, 2018 10:09 am

Please upload a screenshot of your model (with results) and the PLSpredict results table.

norhafiz83
PLS Junior User
Posts: 3
Joined: Sun Nov 25, 2018 9:59 am
Real name and title: Nursaadatun Nisak binti Ahmad

Re: PLS PREDICT RESULT

Post by norhafiz83 » Mon Dec 03, 2018 3:36 pm

Dear Prof,

I have attached herewith screenshot of my model (with results) and the PLS Predict results table (as below).

LV Prediction Summary

RMSE MAE Q2
CEKP 0.507 0.365 0.008
DPL 0.513 0.372 0.040
EMMT 0.486 0.363 -0.072


Thank you in advance for your attention and for your sharing of information.
Attachments
FRAMEWORK- MODEL.png
FRAMEWORK- MODEL.png (51.48 KiB) Viewed 27 times

jmbecker
SmartPLS Developer
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Real name and title: Dr. Jan-Michael Becker

Re: PLS PREDICT RESULT

Post by jmbecker » Tue Dec 04, 2018 9:39 am

A negative value for Q² means that you have less predictive power than simply using the average value of all observations.

That may have several reasons. Your measurement model might not be good enough or your structural model is weak. Usually, the indicator level predictive results also guide you in a direction.
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

norhafiz83
PLS Junior User
Posts: 3
Joined: Sun Nov 25, 2018 9:59 am
Real name and title: Nursaadatun Nisak binti Ahmad

Re: PLS PREDICT RESULT

Post by norhafiz83 » Wed Dec 05, 2018 11:26 pm

Dear Dr,

Thank you for the feedback. Anyway how should i interprete it in my thesis.

Thank you in advance for your attention and sharing of information.

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