Network profile

Gottfried Helms

Reputation

1,468

1.5k
1.2k
933

2017
2018
2019
2020

Top tag

pca

Next privilege

2,000 Rep.

Edit questions and answers

Badges

13

21

Newest

Enlightened

Next badge

0/1

Impact

6 posts edited

0 helpful flags

51 votes cast

10 Bookmarks

Votes Activity Newest Views Added

418

votes

3

answers

269k

views

Relationship between SVD and PCA. How to use SVD to perform PCA?

pca dimensionality-reduction matrix svd

Aug 20 '18 at 19:03 Community♦ 1

123

votes

28

answers

39k

views

Free statistical textbooks

teaching references

Apr 13 at 8:10 Community♦ 1

20

votes

1

answer

5k

views

What exactly is called “principal component” in PCA?

pca terminology definition

Jul 22 '16 at 19:43 Community♦ 1

12

votes

2

answers

12k

views

Factor rotation methods (varimax, oblimin, etc.) - what do the names mean and what do the methods do?

factor-analysis terminology factor-rotation

Sep 26 '18 at 0:08 Marco Stamazza 290

11

votes

3

answers

14k

views

What are the assumptions of factor analysis?

correlation factor-analysis assumptions dimensionality-reduction

Aug 5 '17 at 8:59 Chris Kelly 91

9

votes

1

answer

5k

views

What is the relationship between scale reliability measures (Cronbach's alpha etc.) and component/factor loadings?

factor-analysis reliability psychometrics cronbachs-alpha scale-construction

Aug 3 '17 at 19:05 Community♦ 1

8

votes

1

answer

42k

views

Which matrix should be interpreted in factor analysis: pattern matrix or structure matrix?

pca interpretation factor-analysis rotation

Mar 26 '18 at 17:17 Alexey Gusev 1

7

votes

4

answers

8k

views

Very different results of principal component analysis in SPSS and Stata after rotation

pca spss stata factor-analysis factor-rotation

Jul 11 '19 at 22:56 am313 31

6

votes

1

answer

532

views

What is the value of linear dimensionality reduction in the presence of nonlinear alternatives?

pca dimensionality-reduction manifold-learning

Sep 23 '17 at 23:41 user20160 23.9k

3

votes

4

answers

19k

views

“matrix is not positive definite” - even when highly correlated variables are removed

spss factor-analysis matrix

Dec 10 at 4:14 Community♦ 1

Cross Validated works best with JavaScript enabled