. SPAM .(spam)
. SPAM .()所属R语言包：spam
SPArse Matrix Package
稀疏矩阵封装
译者：生物统计家园网 机器人LoveR
描述----------Description----------
spam is a collection of functions for sparse matrix algebra.
spam是一家集稀疏矩阵代数的功能。
Gereral概述----------Gereral overview----------
What is spam and what is it not:<br>
什么是垃圾邮件，什么是它不参考
While Matrix seems an overshoot of classes and SparseM focuses mainly on regression type problem, we provide a minimal set of sparse matrix functions fully functional for everyday spatial statistics life. There is however some emphasize on Markov chain Monte Carlo type calculations within the framework of (Gaussian) Markov random fields. <br>
而Matrix似乎是一个过冲的类和SparseM主要集中在回归类型的问题，我们提供了一个最小的一组稀疏矩阵功能，功能齐全的日常空间统计的生活。然而，有一些强调马尔可夫链蒙特卡罗类型计算（高斯）马尔可夫随机场的框架内。参考
Emphasis is given on a comprehensive, simple, tutorial structure of the code. The code is S4 based but (in a tutorial spirit) the functions are in a S3 structure visible to the user (exported via NAMESPACE).<br>
强调的是全面，简单，教程的代码结构。代码是S4的基础，但教程精神的功能是在S3结构，可见的用户（通过NAMESPACE“）。<BR>出口的
There exist many methods for sparse matrices that work identically as in the case of ordinary matrices. All the methods are discussed in the help and can be accessed directly via a *.spam concatenation to the function. For example, help{chol.spam} calls the help directly, whereas with help{chol} the user has to choose first between the basis help and the help provided by spam.<br>
存在许多工作相同的情况下，一般矩阵为稀疏矩阵的方法。所有的帮助和方法进行了探讨，通过一个的*.spam串联的功能，可以直接访问。例如，help{chol.spam}调用直接的帮助，而与help{chol}用户首先选择基础之间的帮助和提供的帮助spam。<BR>
Sparseness is used when handling large matrices. Hence, care has been used to provide efficient and fast routines. Essentially, the functions do not transform the sparse structure into full matrices to use standard (available) functionality, followed by a back transform. We agree, more operators, functions, etc. should eventually be implemented.
稀疏处理大型矩阵时使用。因此，已被用来提供高效，快捷的例程。从本质上讲，功能不充分使用标准的（可用的）功能，然后通过一回变换矩阵变换的稀疏结构。我们同意，最终将实现更多的运算符，函数等。
The packages fields and spam are closely linked. <br>
包fields和spam有着密切的联系。参考
（作者）----------Author(s)----------
Reinhard Furrer
参考文献----------References----------
"spam: A Sparse Matrix R Package with Emphasis on MCMC Methods for Gaussian Markov Random Fields.", Journal of Statistical Software, 36(10), 1-25, http://www.jstatsoft.org/v36/i10/.
参见----------See Also----------
See spam.class for a detailed class description, spam and spam.ops for creation, coercion and algebraic operations.<br> demo(package='spam') lists available demos.<br> Related packages are fields, Matrix and SparseM.ontology.
spam.class类的详细描述，spam和spam.ops的创作，胁迫和代数运算。<BR>demo(package='spam')列出提供演示。<BR>的相关的软件包 fields，Matrix和SparseM.ontology。
实例----------Examples----------
## Not run: [＃不运行：]
## History of changes[＃历史记录]
file.show(system.file("NEWS", package = "spam"))
## End(Not run)[＃（不执行）]
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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发表于 2012-9-30 12:19:16
