Monthly Archives:September 2014

Complex Domain Coloring

9月30日,2014
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Complex Domain Coloring

Why don't you stop doodling and start writing serious posts in your blog?(Cecilia,my beautiful wife) Choose a function,把它应用到一组复数上,使用hsv技术绘制结果,并准备好留下深刻印象,因为图像绝对令人惊叹。You only need ggplot2 package and your imagination.This is what happens

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回归模型的结构化模拟–SimReg软件包。

9月30日,2014
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我想介绍一个模拟回归模型的包。This includes both single level and multilevel (i.e.hierarchical or linear mixed) models up to two levels of nesting.The package produces a unified framework to simulate all types of c...

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概率回归的EM算法实现

9月30日,2014
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概率回归的EM算法实现

Users new to the Rcppfamily of functionality are often impressed with theperformance gains that can be realized,但要想知道如何接近他们自己的计算问题还是很困难的。Many of the most impressive performance gainsare demonstrated with seemingly advanced statistical methods,advancedC++–related constructs,或者两者兼而有之。Even when users are able to understand howvarious demonstrated features operate in isolation,例子可能…

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Install R in Android,via GNURoot -no root required!

9月30日,2014
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Install R in Android,via GNURoot -no root required!

以前玩过我的平板电脑,I wondered if installing R could be possible.你知道的,a small android device "to the power of R"… After searching on Google from time to time,I came across some interesting possibilities: … Sigue leyendo →

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交互式可视化非法处理的可盈利废物量

9月30日,2014
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交互式可视化非法处理的可盈利废物量

"Wow!" - I said to myself after reading R Helps With Employee Churn post - "I can create interactive plots in R?!!!I have to try it out!"I quickly came up with an idea of creating interactive plot for my simple model for assessment of the profitable ratio between the volume waste that could be illegally disposed and costs...

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Generating Hurricanes with a Markov Spatial Process

9月30日,2014
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Generating Hurricanes with a Markov Spatial Process

The National Hurricane Center (NHC) collects datasets with all  storms in North Atlantic,the North Atlantic Hurricane Database (HURDAT).为了所有的悲伤,we have the location of the storm,每六焦耳(午夜,six a.m.,中午和下午六点)。注意我们还有日期,the maximal wind speed – on a 6 hour window – and...

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Meet us at R Day and at the Strata+Hadoop World NYC Oct 15-17,2014

9月30日,2014
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Meet us at R Day and at the Strata+Hadoop World NYC Oct 15-17,2014

Are you headed to Strata?就在拐角处!我们特别希望在10月15日的R日见到你,where we will cover a raft of current topics that analysts and R users need to pay attention to.The R Day tutorials come from Hadley Wickham,Winston Chang,加勒特·格罗蒙德,J.J.Allaire,and

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Additional tips for structuring an individual-based model in R

9月30日,2014
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Additional tips for structuring an individual-based model in R

I had a reader ask me recently to help understand how to modify the code of an individual-based model (IBM) that I posted a while back.It was my first attempt at an IBM in R,我意识到我已经对这种方式做了一些重大的改变。

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Why are we still teaching T-tests?

9月30日,2014
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The following post by Norm Matloff originally appeared on his blog,MAD(数据)科学家,on September 15th.我们很少再版出现在其他博客上的文章,然而,the questions that Norm raises both with respect to the teaching of statistics,他认为“R的统计程序过于集中于显著性检验”值得再看一看。此外,…

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Building a DGA Classifier: Part 1,Data Preparation

9月30日,2014
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This will be a three-part blog series on building a DGA classifier andwill be split into three logical phases of building a classifier: 1)Data preparation (this) 2) Feature engineering and 3) Model selection.And before I get too far into this,I want to give a huge thank you toClick Security for releasing a DGAclassifierin python as part of their...

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