R is primarily a language for working with numbers, but we often need to work with text as well. Whether it's formatting text for reports, or analyzing natural language data, R provides a number of facilities for working with character data. Handling Strings with R, a free (CC-BY-NC-SA) e-book by UC Berkeley's Gaston Sanchez, provides an overview of the...
Immediate and personalized feedback has been central to the learning experience on DataCamp since we launched the first courses. If students submit code that contains a mistake, they are...
Datasets often arrive to us in a form that is different from what we need for our modelling or visualisations functions who in turn don’t necessary require the...
Presenting data results in the most informative and compelling manner is part of the role of the data scientist. It's all well and good to master the arcana of...
My previous post was explaining how mathematically it was possible to parallelize computation to estimate the parameters of a linear regression. More speficially, we have a matrix which is...
Part of rOpenSci’s mission is to create technical infrastructure in the form of carefully vetted R software tools that lower barriers to working with data sources on the web....
“Some R functions have an awful lot of arguments”, you think to yourself. “I wonder which has the most?” It’s not an original thought: the same question as applied...
Introduction BlueSky Statistics’ desktop version is a free and open source graphical user interface for the R software that focuses on beginners looking to point-and-click their way through analyses. A...
A mechanistic model for the relationship between x and y sometimes needs parameter estimation. When model linearisation does not work,we need to use non-linear modelling. There are three main...
Last week I published a blog post about how easy it is to train image classification models with Keras. What I did not show in that post was how to...
I recently wrote a blog post here comparing the number of CRAN downloads an R package gets relative to its number of stars on GitHub. What I didn’t...
![Le Monde puzzle [#1053]](https://xianblog.files.wordpress.com/2018/03/sieglemond.jpg?w=450&h=192)
An easy arithmetic Le Monde mathematical puzzle again: If coins come in units of 1, x, and y, what is the optimal value of (x,y) that minimises the number...
Tap into Twitter data and create custom word clouds that will visualize the conversation in an impactful way. Analysis performed with R.
The new PYPL Popularity of Programming Languages (June 2018) index ranks Python at #1 and R at #7. Like the similar TIOBE language index, the PYPL index uses Google...
We here at Win-Vector LLC have some really big news we would please like the R-community’s help sharing. vtreat version 1.2.0 is now available on CRAN, and this version...
You may be interested in my new arXiv paper, joint work with Xi Cheng, an undergraduate at UC Davis (now heading to Cornell for grad school); Bohdan Khomtchouk, a...
In the exercises below, we will explore more in Time Series analysis.The previous exercise is here,Please follow this in sequence Answers to these exercises are available here. Exercise 1...
I have frequent conversations with R champions and Systems Administrators responsible for R, in which they ask how they can measure and analyze the usage of their servers. ...
A quick riddler resolution during a committee meeting (!) of a short riddle: 36 houses stand in a row and collapse at times t=1,2,..,36. In addition, once a house...
A visual exploration of the 2017-2018 NBA landscape The modern NBA landscape is rapidly changing. Steph Curry has redefined the lead guard prototype with jaw-dropping shooting range coupled with...
You have got the best job of the 21st century. Like a treasure hunter, looking for a data treasure chest while sailing through data lakes. In many companies you...
To post your R job on the next post Just visit this link and post a new R job to the R community. You can post a job for free (and there are...
RStudio Connect version 1.6.4 is now available! There are a few breaking changes and a handful of new features that are highlighted below. We encourage you to upgrade as soon as...
You can find members of the rOpenSci team at various meetings and workshops around the world. Come say ‘hi’, learn about how our software packages can enable your research,...
Do a t-test APA formatted output Flexibility Dataframe of Values Contribute Credits Previous blogposts One of the most time-consuming part of data analysis in...
Even though the libraries for R from Python, or Python from R code execution existed since years and despite of a recent announcement of Ursa Labs foundation by Wes...
Sometimes, with big data, matrices are too big to handle, and it is possible to use tricks to numerically still do the map. Map-Reduce is one of those. With...
I haven't had a lot of time to play with this but yesterday, I discovered the tuber R package, which allows you to interact with the YouTube API.To use...
