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{{Short description|Experiment used to study
A '''computer experiment''' or '''simulation experiment''' is an experiment used to study a computer simulation, also referred to as an [[in silico]] system. This area includes [[computational physics]], [[computational chemistry]], [[computational biology]] and other similar disciplines.
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===Problems with massive sample sizes===
Unlike physical experiments, it is common for computer experiments to have thousands of different input combinations. Because the standard inference requires [[Invertible matrix|matrix inversion]] of a square matrix of the size of the number of samples (<math>n</math>), the cost grows on the <math> \mathcal{O} (n^3) </math>. Matrix inversion of large, dense matrices can also cause numerical inaccuracies. Currently, this problem is solved by greedy decision tree techniques, allowing effective computations for unlimited dimensionality and sample size [
==See also==
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