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From Ted Dunning <>
Subject Re: tf-idf + svd + cosine similarity
Date Wed, 15 Jun 2011 08:17:04 GMT
The normal terminology is to name U and V in SVD as "singular vectors" as
opposed to eigenvectors.  The term eigenvectors is normally reserved for the
symmetric case of U S U'  (more generally, the Hermitian case, but we only
support real values).

On Wed, Jun 15, 2011 at 12:35 AM, Dmitriy Lyubimov <>wrote:

> I beg to differ... U and V are left and right eigenvectors, and
> singular values is denoted as Sigma (which is a square root of eigen
> values of the AA' as you correctly pointed out) .

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