Top "Eigenvalue" questions

The eigenvalue is the factor by which the eigenvector is scaled when multiplied by the matrix.

whats the fastest way to find eigenvalues/vectors in python?

Currently im using numpy which does the job. But, as i'm dealing with matrices with several thousands of rows/columns …

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Python Numpy TypeError: ufunc 'isfinite' not supported for the input types

Here's my code: def topK(dataMat,sensitivity): meanVals = np.mean(dataMat, axis=0) meanRemoved = dataMat - meanVals covMat = np.cov(meanRemoved, …

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Numpy transpose multiplication problem

I tried to find the eigenvalues of a matrix multiplied by its transpose but I couldn't do it using numpy. …

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Does Matlab eig always returns sorted values?

I use a function at Matlab: [V,D] = eig(C); I see that V and D are always sorted ascending …

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How expensive is it to compute the eigenvalues of a matrix?

How expensive is it to compute the eigenvalues of a matrix? What is the complexity of the best algorithms? How …

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Python numpy compute first eigenvalue and eigenvector

I was wondering if there is a Python package, numpy or otherwise, that has a function that computes the first …

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Eigenvalues in octave with eig()

Consider the real, symmetric matrix S = (2, 1; 1, 2) From the characteristic equation |S - λ I|, we have the quadratic (2-λ)^2 - 1 = 0, whose …

octave eigenvector eigenvalue
Eigenvalues in MATLAB

In MATLAB, when I run the command [V,D] = eig(a) for a symmetric matrix, the largest eigenvalue (and its …

matlab linear-algebra eigenvector eigenvalue
Mapping array back to an existing Eigen matrix

I want to map an array of double to an existing MatrixXd structure. So far I've managed to map the …

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How do I find out eigenvectors corresponding to a particular eigenvalue of a matrix?

How do I find out eigenvectors corresponding to a particular eigenvalue? I have a stochastic matrix(P), one of the …

python numpy scipy eigenvector eigenvalue