Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

get_factor_variance() returns ndarray which is not ordered by variance. #132

Open
schreibfheler opened this issue Nov 21, 2023 · 0 comments

Comments

@schreibfheler
Copy link

When i print the variance of the factors with get_factor_variance(), the variance is not monotonically decreasing. In my understanding each additional factor should explain less and less variance. The variance of my 15 factors looks like this (notice the values marked in bold):
[12.69, 5.32, 2.7, 2.6, 2.26, 2.08, 1.76, 2.54, 2.4, 1.69, 1.49, 2.06, 1.16, 1.15, 1.45]

n_factors = 15
fa = FactorAnalyzer(n_factors, rotation="varimax", method='principal', use_smc=True)
fa.fit(X)
print(pd.DataFrame(fa.get_factor_variance(),index=['Variance (sum of squared loadings)','Proportional Var','Cumulative Var']))

I cannot provide you with the data X

Expected behavior: the output should be sorted by decreasing variance

  • OS: macOS
  • Python: 3.11
  • Versions for factor_analyzer / numpy / scipy / pandas: newest
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

1 participant