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Norm with matrices help

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TS
TS 2015-4-20
评论： Star Strider 2015-4-20
When using norm with matrices, is it the average?

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Star Strider
Star Strider 2015-4-20
No, it is not the average.
Assuming you intend the 2-norm, the norm of a matrix is the largest singular value.

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Naqvi
Naqvi 2015-4-20
In Laymen terms, norm is actually the absolute value of a vector or matrix. For example x1 = [2;1] norm (x1)= sqrt (2^2+1^2) = sqrt(4+1) = sqrt (5) = 2.2361
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Star Strider
Star Strider 2015-4-20
That is correct for the 2-norm of vectors, but not matrices.

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