tl,dr: If you want to be contacted for freelance R work, edit this list https://github.com/isomorphisms/hire-an-r-programmer/blob/master/README.md.   Background/Problem: I was looking for a list of R-programming freelancers and realised there is no such list. Other than famous people and people I already ... [Read more...]

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I recently encountered some functionality in R which most of you might already know. Nevertheless, I want to share it here, because it might come in handy for those of you who do not know this yet.Suppose you want to read in a large number of very large text ... [Read more...]

In my previous article I have shown how R can be used to analyze PostgreSQL tables in Saiku using dynamically generated OLAP cubes. Today I will show you how you can analyze any R data frame in Saiku. WIth Saiku you can easily create excel-like pivot t... [Read more...]

A guest post by Jeff Hemsley, who has co-authored with Karine Nahon a new book titled Going Viral. ————————- In Going Viral (Polity Press, 2013) we explore the topic of virality, the process of sharing messages that results in a fast, broad …Read more » [Read more...]

[This article was first published on Jeromy Anglim's Blog: Psychology and Statistics, and kindly contributed to R-bloggers]. (You can report issue about the content on this [Read more...]

Coursera – an online education startup – has rapidly expanded its curriculum of statistics and data analysis courses. Today, there are already 33 modules directly linked to the field, excluding the courses where statistics and data science are solely used as a supportive tool (e.g. finance). These courses make use of multiple ... [Read more...]

This is the post where we begin to talk about Michael Caine. There's no strong reason for this. It's not as though I have a great fascination with him. Don't get me wrong, I think he's a fine actor. Michael Caine happened to cross my mind a couple weeks ago ... [Read more...]

In a live webinar today hosted by Alteryx, five industry experts shared 14 analytics predictions for 2014. The panel included Paul Ross (Alteryx), Charles Zedlewski (Cloudera), Rick Schultz (Alteryx), Ellie Fields (Tableau) and Michele Chambers (Revolution Analytics). Their predictions were: Analysts will matter more than data scientists R will replace legacy SAS ... [Read more...]

We have written a bit on sample size for common events. We would like to extend this analysis to rare events. In web marketing and a lot of other applications you are trying to estimate a probability of an event (like conversion) where the probability is fairly low (say 5% to 0.5%). ... [Read more...]

Consumers will not complete long questionnaires, so marketing research must get the most it can from every item.  In this post, we look into the toolbox of R packages and search for statistical models that enable us to learn a great deal about eac... [Read more...]

We’re pleased to announce that the final version of RStudio v0.98 is available for download now. Highlights of the new release include: An interactive debugger for R that is tightly integrated with base R debugging tools (browser, recover, etc.) Numerous improvements to the Workspace pane (which is now called ... [Read more...]

I’ve been doodling some chart in R/ggplot using geom_text() to generate a labelled scatterplot. The chart actually builds up several layers using different datasets, so it’s not obvious how to set the ranges cleanly: I know the lower bound I want for the y-axis (y=0), but ... [Read more...]

digest version 0.6.4 is now on CRAN and in Debian. This is a pure maintenance release which should help with a build issue affecting users on Solaris. CRANberries provides the usual summary of changes to version 0.6.3. Our package is available... [Read more...]

An edited book titled Data Mining Applications with R will be on market soon, which features 15 real-word applications on data mining with R. A preview of the book is available on Google Books. R code, data and color figures … Continue reading → [Read more...]

Following the very positive feedback that Andreas and I have received from delegates of the first R in Insurance conference in July of this year, we are planning to repeat the event next year. We have already reserved a bigger auditorium. The second conference on R in Insurance will be ... [Read more...]

Admitting to stupidity is part of the learning process. So in the interests of public education, here’s something stupid that I did today. You’re working in the R console. Happy with your exploratory code, you decide to save it to a file. Then, you type something else, for ... [Read more...]

Need a Hanukkah or Christmas gift for an R analyst? You could do loads worse than Applied Spatial Data Analysis with R by Bivand, Pebesma and Gomez-Rubio. I don't have my copy yet- I'm still working through all of the other books I've bought this year- but I'll likely pick ... [Read more...]

R can do a lot of really amazing things, but to use just about any of R's many features you need to first import your data and get it into the appropriate shape. For R beginners, this "data wrangling" task can be daunting. Fortunately, ComputerWorld's Sharon Machlis has created an ... [Read more...]

This is a lecture post for my students in the CUNY MS Data Analytics program. In this series of lectures …Continue reading » [Read more...]