[R] Updating a linear model

Thomas Lumley tlumley at u.washington.edu
Mon Sep 22 20:20:18 CEST 2003

On Mon, 22 Sep 2003, Paul Meagher wrote:

> Say I have collected data and used it to construct a linear model.
> I now have a new observation and want to use it to update my linear model.
> Is there a more efficient way to update the model than recomputing the
> linear model from the complete data set?

Not implemented.  While in principle there are much more efficient things
to do, in practice there is enough overhead in lm() that it probably isn't
worth doing them.


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