Penalized Splines for Smooth Representation of High-dimensional Monte Carlo Datasets
arXiv:1301.2184 · doi:10.1016/j.cpc.2013.04.008
Abstract
Detector response to a high-energy physics process is often estimated by Monte Carlo simulation. For purposes of data analysis, the results of this simulation are typically stored in large multi-dimensional histograms, which can quickly become both too large to easily store and manipulate and numerically problematic due to unfilled bins or interpolation artifacts. We describe here an application of the penalized spline technique to efficiently compute B-spline representations of such tables and discuss aspects of the resulting B-spline fits that simplify many common tasks in handling tabulated Monte Carlo data in high-energy physics analysis, in particular their use in maximum-likelihood fitting.
8 pages, 6 figures, submitted to Computer Physics Communications, program source code included in photospline.tgz
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