Hello, Is there an R function that given a linear regression solution for a data set will answer in the most efficient way whether a new data point shifts the solution or not? or whether the new solution would differ by less than some error.
I need this in the context of an iterative method and such a function would spare a lot of time. The closest answer I can find to this, involves keeping track of the QR and updating it with a row append. I would like to only get a boolean answer because a 'no' answer would spare tons of flops. Many thanks in advance, Best regards, Giovanni ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
