The RuleFit algorithm from Friedman and Propescu is an interesting regression and classification approach that uses decision rules in a linear model.RuleFit is not a completely new idea, but it combines a bunch of algorithms in a clever way. RuleFit consists of two components: The first component produces "rules" ... [Read more...]

On a day to day basis, I use the R programing language more than any other language (e.g Python, Java, Fortran, Matlab…), and there is a good reason for it: R excels at the sort of work I do. It has been extremely well suited to my modeling work, ... [Read more...]

The jobs Within the New Zealand Ministry of Business, Innovation and Employment, the Sector Trends team has recently secured resourcing for additional analysts on a range of statistical programmes. That’s the team that I usually manage, although for the next few months I’m doing a stint on a ... [Read more...]

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During one of our Department's weekly biostatistics "clinics", a visitor was interested in creating confidence bands for a Gaussian density estimate (or a Gaussian mixture density estimate). The mean, variance, and two "nuisance" parameters, were simultaneously estimated using least-squares. Thus, the approximate sampling variance-covariance matrix (4x4) was readily available. The ... [Read more...]

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Hadley Wickham, RStudio's Chief Scientist and prolific author of R books and packages, conducted an AMA (Ask Me Anything) session on Reddit this past Monday. The session was tremendously popular, generating more than 500 questions/comments and promoting the AMA to the front page of Reddit. If you're not familiar with ... [Read more...]

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By Paulin Shek Following the great success of the EARL conference in London earlier this month, our attention now turns to EARL Boston which will take place between 2-4th November just across the pond; the competition is already on to … Continue reading → [Read more...]

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Jug stands for Just Unified Galloping. Okay, okay, it’s just a play on words coming from a Flask (Python) background. Jug is my attempt to create a simple small web framework that allows you to turn your (existing) R functions into an API. Having the wonderful httpuv package at ... [Read more...]

Here are some examples with code where I use the R packages DT and sparkline to produce interactive data tables and inline graphs as well as inline graphs within data table cells. Both packages utilize the htmlwidgets package to interface with javascript libraries. With htmlwidgets you can create custom widgets ... [Read more...]

by Joseph Rickert I have been a big fan of R user groups since I attended my first meeting. There is just something about the vibe of being around people excited about what they are doing that feels good. From a speaker's perspective, presenting at an R user Group meeting ... [Read more...]

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This is the second « big » feature coming with branch 0.2 of rleafmap (now on CRAN!). With this new version you can write popups content in R Markdown which will be processed when you generate the map. This can be useful … Lire la suite → [Read more...]