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By Steph Locke We polled our consultants for their tips on how to be more effective at writing R code; and here are the top 10! 10. Don’t pre-emptively tidy Spending time on formatting as you go along gives you … Continue reading → [Read more...]

When modeling the frequency measure in the operational risk with regressions, most modelers often prefer Poisson or Negative Binomial regressions as best practices in the industry. However, as an alternative approach, Quasi-Poisson regression provides a more flexible model estimation routine with at least two benefits. First of all, Quasi-Poisson regression ... [Read more...]

In the mathematical statistics course today, we started talking about tests, and decision rules. To illustrate all the concepts introduced today, we considered the case where we have a sample  with . And we want to test   against  In the course, we’ve seen that we could use a test based ... [Read more...]

An easy way to run R code in parallel on a multicore system is with the mclapply() function. Unfortunately, mclapply() does not work on Windows machines because the mclapply() implementation relies on forking and Windows does not support forking. Previously, I published a hackish solution that implemented a fake mclapply() ... [Read more...]

by Andrie de Vries The second week of SQLRelay (#SQLRelay) kicked off in London earlier this week. SQLRelay is a series of conferences, spanning 10 cities in the United Kingdom over two weeks. The London agenda included 4 different streams, with tracks for the DBA, BI and Analytics users, as well as ... [Read more...]

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I’ll keep this post short and sweet. Here’s some code to get a really nice looking plot in R. It has a high pixel count to produce a high resolution output that can be used in a word document. Because of this, the size of everything in the ... [Read more...]

In this post we will introduce the Fourier basis functions in the context of Functional Data Analysis. The Fourier basis function is method to smooth out data varying over a continuum and exhibiting a cyclical trend. Smoothing techniques play an important role in Functional Data Analysis (FDA) as they provide ... [Read more...]

I was delighted by yesterday's announcement that Angus Deaton has been awarded the Nobel Prize in Economic Science this year. His contributions have have been many, fundamental, and varied, and I certainly won't attempt to summarize them here. Suffice to say that the official citation says that the award is "... [Read more...]

I was delighted by yesterday's announcement that Angus Deaton has been awarded the Nobel Prize in Economic Science this year. His contributions have have been many, fundamental, and varied, and I certainly won't attempt to summarize them here. Suffice to say that the official citation says that the award is "... [Read more...]

The nodes have been assigned a color by the author so that the underlying distinctions are more pronounced. Cars that are perceived as Economical (in aquamarine) are not seen as Sporty or Powerful (in cyan). The red edges connecting these attributes indicate negative relationships. Similarly, a Practical car (in light ... [Read more...]

The nodes have been assigned a color by the author so that the underlying distinctions are more pronounced. Cars that are perceived as Economical (in aquamarine) are not seen as Sporty or Powerful (in cyan). The red edges connecting these attributes in... [Read more...]

by Michele Usuelli Microsoft Data Scientist Azure Machine Learning Studio is a drag-and-drop tool to deploy data-driven solutions. It contains pre-built items including data preparation tools and Machine Learning algorithms. In addition, it allows to include R and Python custom scripts. In order to build powerful R tools, you might ... [Read more...]

The eoda R-Academy course “R in Live Systems” teaches key aspects of using R in a productive business environment with many practical examples from 16th to 17th November 2015 in Kassel, Germany. The professional use of R indicates special requirements in terms of reproducibility, compatibility, teamwork, load distribution and rights management. ... [Read more...]

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Pi to 1000 places connectedIdea:In the past i have often observed circular plots (cant find a technical name) in 1) New York times[1] to display human genome data2) Migration patterns among humans[2]3) to display import and export data (Bloomberg ... [Read more...]

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This blog post is a little late; I wanted to get it out sooner. As new students have flooded the halls for the new terms at JHU Biostat, I figured I would give some recommendations to our new students, and biostatistics students in general. Some of these things may be ... [Read more...]