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R语言 segmented包 segmented-package()函数中文帮助文档(中英文对照)

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发表于 2012-9-30 00:23:08 | 显示全部楼层 |阅读模式
segmented-package(segmented)
segmented-package()所属R语言包:segmented

                                         Segmented relationships in regression models with breakpoints/changepoints estimation
                                         分段关系回归模型与断点/ changepoints的估计

                                         译者:生物统计家园网 机器人LoveR

描述----------Description----------

Estimation of Generalized Linear Models with piecewise linear relationships having a fixed number of break-points.
估计广义线性模型,分段线性关系,具有固定数量的突破点。


Details

详细信息----------Details----------

Package segmented is aimed to estimate linear and generalized linear models having one or more segmented relationships in the linear predictor. Estimates of the slopes and of the possibly multiple breakpoints are provided. The package includes testing/estimating functions and methods to print, summarize and plot the results. <br>
套件segmented旨在估计线性模型和广义线性模型中的线性预测有一个或多个分割的关系。估计的斜坡,可能有多个断点。该套件包括测试/评估函数和方法,打印,汇总,并画出结果。参考

The algorithm used by segmented is not grid-search. It is an iterative procedure (Muggeo, 2003)  that needs starting values only for the breakpoint parameters and therefore it is quite efficient even with several breakpoints to be estimated. Moreover since version 0.2-9.0, segmented implements  the bootstrap restarting (Wood, 2001) to make the algorithm less sensitive to starting values. <br>
该算法使用segmented是不是网格搜索。这是一个迭代过程(Muggeo,2003),需要开始只为断点参数的值,因此它是相当有效的,即使有几个断点以进行估计。此外,以后的版本0.2-9.0,segmented实现自举启动(木,2001),使算法的初始值不敏感的。参考

A tentative approach to deal with unknown number of breakpoints is also provided, see option stop.if.error in seg.control.
还提供一个试探性的方法来处理未知数量的断点,请参阅选项“stop.if.error seg.control。


(作者)----------Author(s)----------



Vito M.R. Muggeo &lt;vito.muggeo@unipa.it&gt;




参考文献----------References----------

Biometrika 74, 33&ndash;43.

Biometrika 58: 525 &ndash; 534.
Statistics in Medicine 22, 3055&ndash;3071.
models with broken-line relationships. R News 8/1, 20&ndash;25.
continuous measurements. Bioinformatics 27, 161&ndash;166.
by bootstrap restarting. Biometrics 57, 240&ndash;244.
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。


注:
注1:为了方便大家学习,本文档为生物统计家园网机器人LoveR翻译而成,仅供个人R语言学习参考使用,生物统计家园保留版权。
注2:由于是机器人自动翻译,难免有不准确之处,使用时仔细对照中、英文内容进行反复理解,可以帮助R语言的学习。
注3:如遇到不准确之处,请在本贴的后面进行回帖,我们会逐渐进行修订。
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