Posts Tagged ‘ other ’

用plyr包扩展apply族函数的功能

April 21, 2012
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用plyr包扩展apply族函数的功能

apply族函数是R语言中很有特色的一类函数,包括了apply、sapply、lapply、tapply、aggregate等等。在这篇博文里对它们进行了简略的说明。这一类函数本质上是将数据进行分割、计算和整合。它们在

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一个简单的狼兔追逐问题

April 9, 2012
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一个简单的狼兔追逐问题

四月八日,也就是春分月圆之后的首个星期日即是复活节(Easter)。而复活节兔是复活节象征之一。作为多产动物的兔子,象征了春天的复苏和新生命的诞生。此外,兔子是爱神阿弗洛狄特的宠

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什么样的人能逃离泰坦尼克号?

April 7, 2012
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什么样的人能逃离泰坦尼克号?

1912年4月15日,英国皇家邮轮泰坦尼克号(RMS Titanic)在北大西洋撞上冰山沉没,1500多名乘客遇难,成为和平时期死亡人数最多的海难之一。这个沉船故事不断地为作家、电影制作人和歌曲作

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Understanding Products Of Article Building

April 6, 2012
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Article marketing can be a great way to build site traffic. Article marketing is the process of submitting articles to directories so that others can post them to their websites...

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Losing 10 Pounds – What’s Needed

April 5, 2012
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Nowadays the need for effective weight loss is on the rise. The demand for products and exercise equipment leads to some very innovative training remedies and die...

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An Analysis Of Rudimentary Aspects For Stress Treatments

April 4, 2012
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Did you know there is a direct link to stress and health? It can be mental health or even physical health. There are many common ailments that can be pr...

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Painless Advice In Quitting Smoking Benefits In The UK

April 3, 2012
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Don’t let yourself get fooled into believing that it is just too hard to quit smoking. Many people finally give up and decide that there is just no hop&#101...

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Methods For Mobile Marketing Tutorials – A Background

March 30, 2012
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Imagine that you own a shop that has quite a few regular customers, but you discover that one random day you have had little to no business come your way. You sen...

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