matrix norms/determinant

[kshedden]

I believe that the OneNorm and InfinityNorm functions are implemented incorrectly.

The OneNorm should be the sum of absolute values of the elements of the matrix.

The InfinityNorm should be the maximum absolute value of the elements of the matrix.

Also, it would be helpful to have a function that provides the log determinant, since the determinant will blow up for moderate or large matrix sizes.

[skelterjohn]

Oops, you're right, I switched those!

Feel free to make a pull request for LogDet()

On Mon, Jan 21, 2013 at 12:31 AM, kshedden [email protected] wrote:

I believe that the OneNorm and InfinityNorm functions are implemented
incorrectly.

The OneNorm should be the sum of absolute values of the elements of the
matrix.

The InfinityNorm should be the maximum absolute value of the elements of
the matrix.

Also, it would be helpful to have a function that provides the log
determinant, since the determinant will blow up for moderate or large
matrix sizes.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/5.

[kshedden]

John,

Thanks, and thanks for your work on this project.

Best,

Kerby

On Mon, Jan 21, 2013 at 6:58 AM, John Asmuth [email protected]:

Oops, you're right, I switched those!

Feel free to make a pull request for LogDet()

On Mon, Jan 21, 2013 at 12:31 AM, kshedden [email protected]
wrote:

I believe that the OneNorm and InfinityNorm functions are implemented
incorrectly.

The OneNorm should be the sum of absolute values of the elements of the
matrix.

The InfinityNorm should be the maximum absolute value of the elements of
the matrix.

Also, it would be helpful to have a function that provides the log
determinant, since the determinant will blow up for moderate or large
matrix sizes.

—
Reply to this email directly or view it on GitHub<
https://github.com/skelterjohn/go.matrix/issues/5>.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/5#issuecomment-12494800.

[taylorchu]

btw, the norm in this package uses vector norm not matrix norm.

[taylorchu]

fixed in #15