Re: RowMatrix: tallSkinnyQR

[Yanbo Liang]

Since this function is used to compute QR decomposition for RowMatrix of a
tall and skinny shape, the output R is always with small rank.
[image: Inline image 1]

On Fri, Jun 9, 2017 at 10:33 PM, Arun  wrote:

> hi
>
> *def  tallSkinnyQR(computeQ: Boolean = false): QRDecomposition[RowMatrix,
> Matrix]*
>
> *In output of this method Q is distributed matrix*
> *and R is local Matrix*
>
> *Whats  the reason R is Local Matrix?*
>
>
> -Arun
>

RowMatrix: tallSkinnyQR

[Arun]

hi

*def  tallSkinnyQR(computeQ: Boolean = false): QRDecomposition[RowMatrix,
Matrix]*

*In output of this method Q is distributed matrix*
*and R is local Matrix*

*Whats  the reason R is Local Matrix?*


-Arun