R is an incredibly active software project. Since the first code was checked into Subversion back on 18 September 1997, there have been more than 100,000 updates to the R sources by the 20-some members of the R Core Team. As you can see from the activity graphs from the GitHub mirror of ... [Read more...]

I’m announcing the alpha launch of EcoPy: Ecological Data Analysis in Python. EcoPy is a Python module that contains a number of  techniques (PCA, CA, CCorA, nMDS, MDS, RDA, etc.) for exploring complex multivariate data. For those of you familiar … Continue reading → [Read more...]

"Sensemaking is a motivated, continuous effort to understand connections (which can be among people, places, and events) in order to anticipate their trajectories and act effectively." - Gary Klein, Brian Moon & Robert Hoffman Making Sense of Sensemaking 1 (2006) Story #1: A Tale of Causal Links A causal model can serve as a ... [Read more...]

"Sensemaking is a motivated, continuous effort to understand connections (which can be among people, places, and events) in order to anticipate their trajectories and act effectively."- Gary Klein, Brian Moon & Robert HoffmanMaking Sense of Sensema... [Read more...]

[Read more...]

"Feature engineering" is a fancy term for making sure that your predictors are encoded in the model in a manner that makes it as easy as possible for the model to achieve good performance. For example, if your have a date field as a predictor and there are larger differences ... [Read more...]

[Read more...]

For a long time, people have been sending me requests for a suitable smoothing / contouring / interpolation geometry be made available via ggtern, over and above the Kernel Density function. I am very pleased to say, that the recent version 1.0.6 has this feature added. Let me demonstrate how it works. This ... [Read more...]

[Read more...]

Originally posted on Models are illuminating and wrong:I recently interviewed Hadley Wickham the creator of Ggplot2 and a famous R Stats person. He works for RStudio and his job is to work on Open Source software aimed at Data Geeks. Hadley is famous for his contributions to Data Science ... [Read more...]

I recently was looking for methods to apply to time-to-event data and started exploring Survival Analysis Models. In this post, I'm exploring basic KM estimator. It is a nonparametric estimator of the survival function. There are couple of instances when the KM estimator comes in handy - When the survival ... [Read more...]

I recently was looking for methods to apply to time-to-event data and started exploring Survival Analysis Models. In this post, I'm exploring basic KM estimator which is a nonparametric estimator of the survival function using a real dataset (on time t... [Read more...]

[Read more...]

Coming back from a bicycle ride in Tarn, I wanted to have a look at the trip. This gave me the opportunity to learn how to use the R package leafletR to obtain an HTML map using leaflet and the great projects OpenStreetMap or Thunderforest (among others). Introduction To use ... [Read more...]

Open R shiny App from a new window here! Play with the App here: In this project I set out to build an interactive app to […] [Read more...]

[Read more...]

[Read more...]

[Read more...]

A quick example of bootstraping a logistic regression. Nothing special here, example could be extended to any other type of model that has a coef() method. library(boot) logit_test [Read more...]

[Read more...]