It is a common knowledge that Bollinger Bands (price standard deviation added to a moving average of the price) are an indicator for volatility. Expanding bands – higher volatility, squeezing bands – lower volatility. A bit of googling and you get the idea. In my opinion – that’s wrong, unless, one uses ... [Read more...]

[Read more...]

One of my family members gave me an idea to perhaps try scraping data from a job site, and arranging the data in a way that can then easily be filtered and checked using a spreadsheet. I’m actually a little … Continue reading → [Read more...]

One of my family members gave me an idea to perhaps try scraping data from a job site, and arranging the data in a way that can then easily be filtered and checked using a spreadsheet. I’m actually a little … Continue reading → [Read more...]

Read about the exciting new features of the latest data.tree release. generate tree plots! The post R data.tree 0.3 “Apple Tree” on CRAN: Now with tree plot! appeared first on ipub. [Read more...]

I would like to thank Feiwen, Neil  and all other technical reviewers and readers for their informative comments and suggestions in this post. Backgrounds Deep Neural Network (DNN) has made a great progress in recent years in image recognition, natural language processing and automatic driving fields, such as Picture.1 shown ... [Read more...]

[social4i size=”large” align=”float-right”] Guest post by Stefan Feuerriegel – originally published here. Software testing describes several [Read more...]

[Read more...]

The Gravitational Waves paper that was in the news yesterday has almost a thousand authors. (Actually there’s more than one paper—there’s the “discovery” paper and the “implications” paper.) Out of interest, I ... [Read more...]

The R logo has been revised in to be more compatible with the principles of flat design followed by some recent user interfaces such as Microsoft Windows >= 8 and Mac OS X >= [Read more...]

If you’ve read my blog, taken one of my classes, or sat next to me on an airplane, you probably know I’m a big fan of Hadley Wickham’s ggplot2 package, especially compared to base R plotting. Not everyone agrees. Among the anti-ggplot2 crowd is JHU Professor Jeff ... [Read more...]

The latest update to RStudio, the cross-platform open-source integrated development environment for the R language from the team at RStudio, adds many new features for R developers. But perhaps the most significant update is one which allows R developers to add their own new features to RStudio: add-ins. RStudio Add-ins ... [Read more...]

[This article was first published on Reimagined Invention, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share [Read more...]

In January the material in my book on Empirical software engineering using R had its first exposure to professional software developers at a one day workshop (there was a rerun last week; slides here). The sessions were both fully booked, but as often happens on half turned up, around 15 at ... [Read more...]

Version 1.1 of our R library abcrf version 1.1  is now available on CRAN.  Improvements against the earlier version are numerous and substantial. In particular,  calculations of the random forests have been parallelised and, for machines with multiple cores, the computing gain can be enormous.Filed under: R, Statistics, University life Tagged: ... [Read more...]

Some members of the Ugandan media have claimed that counts of registered voters for the 2016 General Election, contain almost 20,000 “ghost voters”.  This is according to their analyses (using excel) of data released by the Uganda Electoral Commission (EC), the body charged with conducting a free and fair election. With voting ... [Read more...]

[Read more...]

R-Fiddle is a great tool to develop and test  code segments or complete R programs.   By accessing the R-Fiddle web site users have a fully functioning R console,  code editor and discussion board all in one place.  If a user has code uploaded that has been designated to share,  other ... [Read more...]

The Brazilian Carnival just ended this week, but for some people it is time to starting worry about crazy things that may have happened over the days of the flesh festival. Watching the news, the spokesperson of the Test and Prevention Center (CTA) in Brasilia estimated that the number of ... [Read more...]

[Read more...]