http://qs1969.pair.com?node_id=389546


in reply to Data Regression Utility

Just a suggestion -- you might consider writing your OLS in matrix notation, and then using PDL to sling the matrices, rather than handling all the messy algebra scalar-wise. The matrix approach would also give you multivariate OLS for free, vs. just the single dimensional y=mx+b.

water

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Re^2: Data Regression Utility
by ~~David~~ (Hermit) on Sep 09, 2004 at 13:04 UTC
    I was looking for a way to do the work in matrix notation, but was not aware of a method to go about writing it. I will investigate PDL. Thanks,
    ~~David~~