When fitting a curve to a set of points by means of a least-squares powers series, it is frequently desirable to obtain also a measure of the total error of the curve. Such error is most often measured by the size of the residual sum of squares and, while it is not infrequent for computer programs to provide this error sum along with the coefficients of the power series, in every case we have so far found this sum has been obtained by evaluating the series at every data point. This procedure requires that either the data be read through the machine a second time after the determination of the coefficients or that every data point be stored in the memory of the computer.
The Latest from CACM
Shape the Future of Computing
ACM encourages its members to take a direct hand in shaping the future of the association. There are more ways than ever to get involved.
Get InvolvedCommunications of the ACM (CACM) is now a fully Open Access publication.
By opening CACM to the world, we hope to increase engagement among the broader computer science community and encourage non-members to discover the rich resources ACM has to offer.
Learn More
Join the Discussion (0)
Become a Member or Sign In to Post a Comment