Re: [eigen] Re: LU precision tuning |

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*To*: eigen@xxxxxxxxxxxxxxxxxxx*Subject*: Re: [eigen] Re: LU precision tuning*From*: Jitse Niesen <jitse@xxxxxxxxxxxxxxxxx>*Date*: Wed, 13 May 2009 13:53:02 +0100 (BST)

On Mon, 11 May 2009, Benoit Jacob wrote:

I have no experience with QR so I don't realize how much pivoting is essential or not for QR. So I can't answer right away the following important questions: - what is the domain of application of a no-pivoting QR? Is it restricted to only invertible matrices or something like that? (the fact that our unittest passes doesn't say much on precision, as our tests use a very low precision) - how would the domain of application be expanded if we added partial (column) pivoting?

Cheers, Jitse

**References**:**[eigen] LU precision tuning***From:*Benoit Jacob

**Re: [eigen] Re: LU precision tuning***From:*Benoit Jacob

**Re: [eigen] Re: LU precision tuning***From:*Hauke Heibel

**Re: [eigen] Re: LU precision tuning***From:*Benoit Jacob

**Re: [eigen] Re: LU precision tuning***From:*Benoit Jacob

**Re: [eigen] Re: LU precision tuning***From:*Benoit Jacob

**Re: [eigen] Re: LU precision tuning***From:*Hauke Heibel

**Re: [eigen] Re: LU precision tuning***From:*Hauke Heibel

**Re: [eigen] Re: LU precision tuning***From:*Benoit Jacob

**Re: [eigen] Re: LU precision tuning***From:*Hauke Heibel

**Re: [eigen] Re: LU precision tuning***From:*Benoit Jacob

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