Articles by Derek Jones

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. 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...]

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...]

Converting lines in an svg image to csv

August 15, 2019 | Derek Jones

During a search for data on programming language usage I discovered Stack Overflow Trends, showing an interesting plot of language tags appearing on Stack Overflow questions (see below). Where was the csv file for these numbers? Somebody had asked this question last year, but there were no answers. The graphic ... [Read more...]

My book’s pdf generation workflow

August 11, 2019 | Derek Jones

The process used to generate the pdf of my evidence-based software engineering book has been on my list of things to blog about, for ever. An email arrived this afternoon, asking how I produced various effects using Asciidoc; this post probably contains rather more than N. Psaris wanted to know. ... [Read more...]

Cognitive capitalism chapter reworked

May 29, 2019 | Derek Jones

The Cognitive capitalism chapter of my evidence-based software engineering book took longer than expected to polish; in fact it got reworked, rather than polished (which still needs to happen, and there might be more text moving from other chapters). Changing the chapter title, from Economics to Cognitive capitalism, helped clarify ... [Read more...]

Polished human cognitive characteristics chapter

March 3, 2019 | Derek Jones

It has been just over two years since I release the first draft of the Human cognitive characteristics chapter of my evidence-based software engineering book. As new material was discovered, it got added where it seemed to belong (at the time), no effort was invested in maintaining any degree of ... [Read more...]

Practical statistics books for software engineers

November 7, 2018 | Derek Jones

So you have read my (draft) book on evidence-based software engineering and want to learn more about the statistical techniques used, but are not interested lots of detailed mathematics. What books do I suggest? All the following books are sitting on the shelf next to where I write (not that ... [Read more...]

StatsModels: the first nail in R’s coffin

August 5, 2018 | Derek Jones

In 2012, when I decided to write a book on evidence-based software engineering, R was the obvious system to use for data analysis. At the time, lots of new books had “using R” or “with R” added at the end of their titles; I chose “using R”. When developers tell me ... [Read more...]
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