文章基本信息

标题：A theory of pruning
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作者：Giovanni Lombardo ; Harald Uhlig
期刊名称：Euro Area Balance of Payments and International Investment Position Statistics
印刷版ISSN：1830-3420
电子版ISSN：1830-3439
出版年度：2014
出版社：European Central Bank
摘要：Often, numerical simuations for dynamic, stochastic models in eco-nomics are needed. Higher order methods can be attractive, but bearthe danger of generating explosive solutions in originally stationarymodels. Kim-Kim-Schaumburg-Sims (2008) proposed pruning to dealwith this challenge for second order approximations. In this paper, weprovide a theory of pruning and formulas for pruning of any order. Werelate it to results described by Judd (1998) on perturbing dynamicalsystems.
关键词：pruning; numerical simulation; numerical economics; Taylor;expansion; perturbation methods