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## First N eigenvectors

**From**: |
Keith Goodman |

**Subject**: |
First N eigenvectors |

**Date**: |
Tue, 21 Sep 2004 09:36:40 -0700 |

I need to find the first few eigenvectors (the ones with the largest
eigenvalues) of a large matrix.
The function eig works but it is slow because the matrix is large and
because I need to repeat the process hundreds of times.
Does anyone have a function that finds the first N eigenvectors of a
real symmetric matrix--sort of like Matlab's eigs function?
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**First N eigenvectors**,
*Keith Goodman* **<=**