andrew_gelman_stats andrew_gelman_stats-2013 andrew_gelman_stats-2013-1714 knowledge-graph by maker-knowledge-mining

1714 andrew gelman stats-2013-02-09-Partial least squares path analysis


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Introduction: Wayne Folta writes: I [Folta] was looking for R packages to address a project I’m working on and stumbled onto a package called ‘plspm’. It seems to be a nice package, but the thing I wanted to pass on is the PDF that Gaston Sanchez, its author, wrote that describes PLS Path Analysis in general and shows how to use plspm in particular. It’s like a 200-page R vignette that’s really informative and fun to read. I’d recommend it to you and your readers: even if you don’t want to delve into PLS and plspm deeply, the first seven pages and the Appendix A provide a great read about a grad student, PLS Path Analysis, and the history of the field. It’s written at a more popular level than you might like. For example, he says at one point: “A moderating effect is the fancy term that some authors use to say that there is a nosy variable M influencing the effect between an independent variable X and a dependent variable Y.” You would obviously never write anything like that [yup --- AG]


Summary: the most important sentenses genereted by tfidf model

sentIndex sentText sentNum sentScore

1 Wayne Folta writes: I [Folta] was looking for R packages to address a project I’m working on and stumbled onto a package called ‘plspm’. [sent-1, score-0.402]

2 It seems to be a nice package, but the thing I wanted to pass on is the PDF that Gaston Sanchez, its author, wrote that describes PLS Path Analysis in general and shows how to use plspm in particular. [sent-2, score-0.715]

3 It’s like a 200-page R vignette that’s really informative and fun to read. [sent-3, score-0.199]

4 I’d recommend it to you and your readers: even if you don’t want to delve into PLS and plspm deeply, the first seven pages and the Appendix A provide a great read about a grad student, PLS Path Analysis, and the history of the field. [sent-4, score-0.819]

5 For example, he says at one point: “A moderating effect is the fancy term that some authors use to say that there is a nosy variable M influencing the effect between an independent variable X and a dependent variable Y. [sent-6, score-0.91]

6 ” You would obviously never write anything like that [yup --- AG], and most of your blog readers are pretty sophisticated. [sent-7, score-0.26]

7 It appears to me the PLS Path Analysis is an interesting alternative to SEM, based on partial-least-squares rather then ML. [sent-8, score-0.156]

8 Same diagrams, similar results, similar procedures, different underlying mechanism/philosophy. [sent-9, score-0.198]

9 And Gaston gives an interesting history of things and obviously put a lot of work into a 200+ page document and R package. [sent-10, score-0.344]

10 I don’t know anything about PLS path analysis but I thought I’d pass this on for the benefit of those of you who use these methods. [sent-11, score-0.663]


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