Posts Tagged ‘ Uncategorized ’

Create a cascade chart in SAS

April 27, 2015
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Create a cascade chart in SAS

Sometimes different communities use the same name for different objects. To a soldier, "boots" are rugged, heavy, high-top foot coverings. To a soccer (football) player, "boots" are lightweight cleats. So it is with the term "waterfall plot." To researchers in the medical field, a "waterfall plot" is a sorted bar […] The post Create a cascade chart in SAS appeared first on The DO Loop.

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Random Data Sets Quickly

April 25, 2015
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Random Data Sets Quickly

This post will discuss a recent GitHub package I’m working on, wakefield to generate random data sets. The post is broken into the following sections: Demo 1.1 Random Variable Functions 1.2 Random Data Frames 1.3 Missing Values 1.4 Default Data … Continue reading →

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Thinking big at Yahoo

April 22, 2015
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Thinking big at Yahoo

I’m speaking in the “Yahoo Labs Big Thinkers” series on Friday 26 June. I hope I can live up to the title! My talk is on “Exploring the boundaries of predictability: what can we forecast, and when should we give up?”  Essentially I will start with some of the ideas in this post, and then discuss the […]

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Sum a series in SAS

April 22, 2015
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Sum a series in SAS

A customer asked: How do we go about summing a finite series in SAS? For example, I want to compute for various integers n ≥ 3. I want to output two columns, one for the natural numbers and one for the summation of the series. Summations arise often in statistical […] The post Sum a series in SAS appeared first on The DO Loop.

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Travelling Thilaksha

April 22, 2015
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Travelling Thilaksha

One of my PhD students, Thilaksha Tharanganie, has been very successful in getting travel funding to attend conferences. She was the subject of a write-up in today’s Monash News. We encourage students to attend conferences, and provide funding for them to attend one international conference and one local conference during their PhD candidature. Thilaksha was […]

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Create a waterfall plot in SAS

April 20, 2015
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Create a waterfall plot in SAS

In clinical trials, a waterfall plot is often used to indicate how patients in the study responded to treatment. In oncology trials, the response variable might be the percent change in the size of a tumor from the individual's baseline value at the start of the trial. The percent change […] The post Create a waterfall plot in SAS appeared first on The DO Loop.

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The distribution of Pythagorean triples by angle

April 15, 2015
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The distribution of Pythagorean triples by angle

Last week I was chatting with some mathematicians and I mentioned the blog post that I wrote last year on the distribution of Pythagorean triples. In my previous article, I showed that there is an algorithm that uses matrix multiplication to generate every primitive Pythagorean triple by starting with the […]

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Why is there so much university administration? We kind of asked for it.

April 13, 2015
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The latest commentary on the rising cost of college tuition is by Paul F. Campos and is titled The Real Reason College Tuition Costs So Much. There has been much debate about this article and whether Campos is right or wrong...and I don't plan to add to that. However, I wanted to pick up on

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Genomics Case Studies Online Courses Start in Two Weeks (4/27)

April 13, 2015
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The last month of the HarvardX Data Analysis for Genomics series start on 4/27. We will cover case studies on RNAseq, Variant calling, ChipSeq and DNA methylation. Faculty includes Shirley Liu, Mike Love, Oliver Hoffman and the HSPH Bioinformatics Core. Although taking the previous courses on the series will help, the four case study courses

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DO loop = 1 TO 600;

April 13, 2015
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DO loop = 1 TO 600;

Today is my 600th blog post for The DO Loop. I have written about many topics that are related to statistical programming, math, statistics, simulation, numerical analysis, matrix computations, and more. The right sidebar of my blog contains a tag cloud that links to many topics. What topics do you, […]

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