adam greenberg edited results.tex  about 10 years ago

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\section{Results}  Figure blah.blah shows comparisons of SPF vs SRIF attempting to fit simulated data to a given model.  Note that for certain starting conditions, SPF outperforms SRIF for a large fraction of the total fitting time. SRIF pays an initial overhead cost due to the need to generate a new derivative matrix per iteration, as well as to perform the Householder operations. These overheads mean that each SRIF iteration is substantially longer than each SPF iteration. However, if the fit takes long enough, SRIF tends to converge before SPF (if SPF converges at all).