Articles by Derek Jones

Testing rounded data for a circular uniform distribution

September 5, 2021 | Derek Jones

Circular statistics deals with analysis of measurements made using a circular scale, e.g., minutes past the hour, days of the week. Wikipedia uses the term directional statistics, the traditional use being measurements of angles, e.g., wind direction. Package support for circular statistics is rather thin on the ground. ... [Read more...]

Testing rounded data for a circular uniform distribution

September 5, 2021 | Derek Jones

Circular statistics deals with analysis of measurements made using a circular scale, e.g., minutes past the hour, days of the week. Wikipedia uses the term directional statistics, the traditional use being measurements of angles, e.g., wind direction. Package support for circular statistics is rather thin on the ground. ...
[Read more...]

Where are the industrial strength R compilers?

May 23, 2021 | Derek Jones

Why don’t compiler projects for the R language make it into production use? The few that have been written have remained individual experimental products, e.g., RLLVMCompile. Most popular languages attract many compiler implementations. I’m not saying that any of these implementations have more than a handful of ... [Read more...]

Where are the industrial strength R compilers?

May 23, 2021 | Derek Jones

Why don’t compiler projects for the R language make it into production use? The few that have been written have remained individual experimental products, e.g., RLLVMCompile. Most popular languages attract many compiler implementations. I’m not saying that any of these implementations have more than a handful of ... [Read more...]

Evidence-based software engineering: book released

November 8, 2020 | Derek Jones

My book, Evidence-based software engineering, is now available; the pdf can be downloaded here, here and here, plus all the code+data. Report any issues here. I’m investigating the possibility of a printed version. Mobile friendly pdf (layout shaky in places). The original goals of the book, from 10-years ... [Read more...]

Evidence-based software engineering: book released

November 8, 2020 | Derek Jones

My book, Evidence-based software engineering, is now available; the pdf can be downloaded here, here and here, plus all the code+data. Report any issues here. I’m investigating the possibility of a printed version. The original goals of the book, from 10-years ago, have been met, i.e., discuss ... [Read more...]

beta: Evidence-based Software Engineering – book

June 30, 2020 | Derek Jones

My book, Evidence-based software engineering: based on the publicly available data is now out on beta release (pdf, and code+data). The plan is for a three-month review, with the final version available in the shops in time for Christmas (I plan to get a few hundred printed, and made ... [Read more...]

beta: Evidence-based Software Engineering – book

June 30, 2020 | Derek Jones

My book, Evidence-based software engineering: based on the publicly available data is now out on beta release (pdf, and code+data). The plan is for a three-month review, with the final version available in the shops in time for Christmas (I plan to get a few hundred printed, and made ... [Read more...]

Comments on the COVID-19 model source code from Imperial

April 5, 2020 | Derek Jones

At the end of March a paper modelling the impact of various scenarios on the spread of COVID-19 infections, by the MRC Centre for Global Infectious Disease Analysis at Imperial College, appears to have influenced the policy of the powers that be. This group recently started publishing their modelling code ... [Read more...]

Comments on the COVID-19 model source code from Imperial

April 5, 2020 | Derek Jones

At the end of March a paper modelling the impact of various scenarios on the spread of COVID-19 infections, by the MRC Centre for Global Infectious Disease Analysis at Imperial College, appears to have influenced the policy of the powers that be. This group recently started publishing their modelling code ... [Read more...]

The Renzo Pomodoro dataset

December 15, 2019 | Derek Jones

Estimating how long it will take to complete a task is hard work, and the most common motivation for this work comes from external factors, e.g., the boss, or a potential client asks for an estimate to do a job. People also make estimates for their own use, e.... [Read more...]

The Renzo Pomodoro dataset

December 15, 2019 | Derek Jones

Estimating how long it will take to complete a task is hard work, and the most common motivation for this work comes from external factors, e.g., the boss, or a potential client asks for an estimate to do a job. People also make estimates for their own use, e.... [Read more...]
1 2 3 4

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)