Tagged Questions
5
votes
3answers
198 views
PCA, ICA and Laplacian eigenmaps
I am very interested in the Laplacian eigenmaps method. Currently, I am using it to do dimension reduction for my medical data sets.
However, I have run into a problem using the method.
For ...
2
votes
1answer
141 views
When will PCA be equivalent to ICA?
$X = AS$ where $A$ is my mixing matrix and each column of $S$ represents my sources. $X$ is the data I observe.
If the columns of $S$ are independent and Gaussian, will the components of PCA be ...
4
votes
0answers
106 views
Using kurtosis to assess significance of components from independent component analysis
In PCA eigenvalues determine the order of components. In ICA I am using kurtosis to obtain the ordering. What are some accepted methods to assess the number, (given I have the order) of components ...
