Last October I gave a 3-day masterclass on “Forecasting with R” in Eindhoven, Netherlands. There is a follow-up event planned for Tuesday 18 April 2017. It is particularly designed for people who attended the 3-day class, but if anyone else wants to attend they would be welcome. Please register here if you ... [Read more...]

Last October I gave a 3-day masterclass on “Forecasting with R” in Eindhoven, Netherlands. There is a follow-up event planned for Tuesday 18 April 2017. It is particularly designed for people who attended the 3-day class, but if anyone else wants to attend they would be welcome. Please register here if you ... [Read more...]

Last October I gave a 3-day masterclass on “Forecasting with R” in Eindhoven, Netherlands. There is a follow-up event planned for Tuesday 18 April 2017. It is particularly designed for people who attended the 3-day class, but if anyone else wants to attend they would be welcome. Please register here if you ... [Read more...]

On Thursday, March 23rd, I will give the third lecture of the PhD course on advanced tools for econometrics, on model selection and variable selection, where we will focus on ridge and lasso regressions . Slides are available online. The first part w... [Read more...]

In database theory, a view is a table that actively depend on a data frame and on a query on it, so that if you change something in the data frame, the view will change accordingly. To have something similar to a view in R here we propose the ‘%____%’ operator, ... [Read more...]

In case you missed them, here are some articles from February of particular interest to R users. Public policy researchers use R to predict neighbourhoods in US cities subject to gentrification. The ggraph package provides a grammar-of-graphics framework for visualizing directed and undirected graphs. Facebook has open-sourced the "prophet" package ... [Read more...]

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  The starting point of this post is a simple question: can we use R to analyze punk bands ? And, as a result: what can we learn from applying data analytics methods to punk music ?   Whether we like it or not “punk rock is arguably the most Read More ... [Read more...]

“The best thing to do with missing values is not to have any” (Gertrude Mary Cox) Unfortunately, missing values are ubiquitous and occur for plenty of reasons. One solution is single imputation which consists in replacing missing entries with plausible values. It leads to a complete dataset that can be ... [Read more...]

This weekend I released version 0.3.0 of the Icarus package to CRAN. Icarus provides tools to help perform calibration on margins, which is a very important method in sampling. One of these days I’ll write a blog post explaining calibration on margins! In the meantime if you want to learn ... [Read more...]

A few days ago, I was inspired by a set of photographs of Earth from space, at night. The images are amazing, so I decided to try to replicate them using R. The post Mapping “France at night” with the new sf package appeared first on SHARP SIGHT LABS. [Read more...]

Previous research in data mining has devised numerous different algorithms for learning tasks. While an individual algorithm might already work decently, one can usually obtain a better predictive by combining several. This approach is referred to as ensemble learning. Common examples include random forests, boosting and AdaBost in particular. Our ... [Read more...]

I've worked for over 12 years in hydrology and natural hazard modelling and one of the things that still fascinates me is the variety of factors that come into play in trying to predict phenomena such as river floods. From local observations of meteorological and hydrological variables and their spatio-temporal patterns ... [Read more...]

MariaDB is currently the fastest growing open source database solution. It is mainly developed by the MariaDB corporation and is a fork of MySQL. The DBMS MariaDB with its various free features offers much, which MySQL does not provide or... [Read more...]

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RProtoBuf provides R bindings for the Google Protocol Buffers ("Protobuf") data encoding and serialization library used and released by Google, and deployed as a language and operating-system agnostic protocol by numerous projects. The RProtoBuf 0.4.9 release is the fourth and final update this weekend following the request by CRAN to not ... [Read more...]

The RVowpalWabbit package update is the third of four upgrades requested by CRAN, following RcppSMC 0.1.5 and RcppGSL 0.3.2. This package being somewhat raw, the change was simple and just meant converting the single entry point to using Rcpp Attribu... [Read more...]

So it started… again. This is not my first attempt to create a blog for data science and R, but previously I was trying with Jekyll pages. It looked very nice after the long struggle of setups, I was very happy with it. I used to post my R class ... [Read more...]

I am working in a relatively big molecular biology laboratory where sometimes the common stocks and orders documentation can be a hassle. Recently I ran into one of this problem and decided to change the way to maintain a documentation of our oligonucleotide storage. If you are not familiar with ... [Read more...]