Together with Clara Bicalho (UC Berkeley) and Sisi Huang (WZB), I recently developed a web application that acts as a … Read More →
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Together with Clara Bicalho (UC Berkeley) and Sisi Huang (WZB), I recently developed a web application that acts as a … Read More →
The video recording of my RStudio::conf talk, MLOPS for R with Azure Machine Learning, is now available for streaming thanks to the fine folks at RStudio. The talk begins...
A paper (and an introduction to the paper) in Nature this week seems to have made progress on the existence of indefinite predator-prey cyles. As in the lynx/hare dataset...
I wanted to work through a few examples of more polished graphics done mostly but perhaps not entirely in R. So, I revisited the Baby Boom visualizations I made...
Newman and Postman form a great team to test your REST API. I will give you a quick roundtrip through both tools and their interplay: define requests and tests,...
New business and financial analysts are finding R every day. Most of these new userRs (R users) are coming from a non-programming background. They have ample domain experience in...
Introduction This week I was working on a package which included a function factory. A function factory is a function which returns a function. The problem I faced was that...
The Bayesian framework is powerful and allows for an incredible amount of flexibility and control over your analysis. That being said, newcomers often struggle with a lot of new...
xgboost is the most famous R package for gradient boosting and it is since long time on the market. In one of my publications, I created a framework for...
I sometimes get asked how I got started learning R. I thought I would use this post to go through a few books I read along the way which...
I built robustreg in 2006 and at the time the major stat packages did not have a robust regression available. Below are graphs of weekly and cumulative downloads from...
The slides for my newly released book Analyzing Financial and Economic Data with R are finally ready! I apologize for keep you guys waiting. The slides are available as independent...
This blog post is part of a series on new features in RStudio 1.3, currently available as a preview release. We’re excited to announce that RStudio v1.3 will gain a...
With services like Google Maps, finding the fastest route from A to B has become quick, cheap, and easy. Not just for driving but walking, cycling and public transport...
The latest Riddler makes the remark that the expression |-1|-2|-3| has no unique meaning (and hence value) since it could be | -1x|-2|-3 | = 5 or |-1| –...
One hundred forty-seven new packages made it to CRAN in January. Here are my “Top 40” picks in nine categories: Computational Methods, Genomics, Machine Learning, Mathematics, Medicine, Statistics, Time...
![Le Monde puzzle [#1132]](https://xianblog.files.wordpress.com/2015/10/lemondapari.jpeg?w=450&h=299&%23038;zoom=2)
A vaguely arithmetic challenge as Le weekly Monde current mathematical puzzle: Given two boxes containing x and 2N+1-x balls respectively. If one proceeds by repeatedly transferring half the balls...
Intro: the need for microdata, and the risk of disclosure Survey and administrative data are essential for scientific research, however accessing such datasets can be very tricky, or even impossible. In...
In my last post, I examined the significance of the sector on the salary for different occupational groups using statistics from different regions. In previous posts I have shown...
And a new version of digest is getting onto CRAN now, and to Debian shortly. digest creates hash digests of arbitrary R objects (using the md5, sha-1, sha-256, sha-512,...
We have some really nifty upcoming enhancements to wrapr unpack/to. One of the new notations is the use of := as an alternate assignment operator for unpack/to. This lets...
BMI has an expectations management problem Body Mass Index (BMI) is an attempt to give a quick back-of-envelope answer to the question “if someone weighs W kg, is that a...
Following up on the initial RcppSimdJson release, a first updated arrived on CRAN yesterday. RcppSimdJson wraps the fantastic simdjson library by Daniel Lemire which truly impressive. Via some very...
Introduction It is almost the 29th of February 2020! A day that is very interesting for R, because it marks 20 years from the release of R v1.0.0, the first...
I’m proud to announce that my latest research project, reluctant generalized additive modeling (RGAM), is complete (for now)! In this post, I give a brief overview of the method:...
RBloggers|RBloggers-feedburner RAthena 1.7.1 and noctua 1.5.1 package versions have now been released to the CRAN. They both bring along several improvements with the connection to AWS Athena, noticeably the performance...
Introduction Correlation matrix Correlogram Correlation test Code Photo by Pritesh Sudra Introduction Correlation, often computed as part of descriptive statistics, is a statistical tool used to study the relationship between two variables, ...
TL;DRJust answer 4 questions about best degree for Data Science here: https://www.surveymonkey.com/r/7FGGWS7 No doubt asking the question "What's the best degree for Data Science?" one won't expect unified or...
It seems that the need for MX, DKIM, SPF, and DMARC records for modern email setups were just not enough acronyms (and setup tasks) for some folks, resulting in...
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