Displaying 3 results from an estimated 3 matches for "eigenstructure".
2004 Sep 11
4
Cancor
Dear R's!
I am strugling with cancor procedure in R. I cannot figure out the
meaning of xcoef and of yxcoef.
Are these:
1. standardized coefficients
2. structural coefficients
3. something else?
I have tried to simulate canonical correlation analysis by checking the
eigenstructure of the expression:
Sigma_xx %*% Sigma_xy %*% Sigma_yy %*% t(Sigma_xy).
The resulting eigenvalues were the same as the squared values of
cancor$cor. I have normalized the resulting eigenvectors, the a's with
sqrt(a'%*%Sigma_xx%*%t(a)), and similarly the b's with
sqrt(b'%*%Sigma_yy...
2011 Jul 08
1
Visualizing a dissimilarity matrix in Euclidean space
Hi,
I have a set of nodes and a dissimilarity matrix for them, as well as a csv
file in which the diss matrix has been converted to [node_1, node_2,
dissimilarity] format. I would like to visualize this as a graph in
Euclidean space (that is, similar nodes clumped together in clusters),
rather than the seriation visualization given by dissplot(). I am using
Network WorkBench for my
2013 Apr 09
1
sem: S is numerically singular: expect problems
Dear Users,
I am a new user of the sem package.
I have a model that is being flagged by sem as "S is numerically singular:
expect problems"
I have checked John Fox's response to a similar problem. Obviously the
variance-covariance matrix is singular, but none of the possible reasons
seems to hold in my case.
Any leads how I could get the model to work?
from Prof. John Fox
That