Another puzzle in memoriam of John Conway in The Guardian: Find the ten digit number, abcdefghij. Each of the digits is different, and a is divisible by 1 ab is divisible by 2 abc is divisible by 3 abcd is divisible by 4 abcde is divisible by 5 abcdef is divisible by 6 abcdefg is […] [Read more...]

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COVID-19 or Coronavirus pandemic has a great and unpredictable effect on our lives. I wanted to see the speed and spreading of the virus across countries. And the following is what and how I’ve seen: COVID-19 or Coronavirus pandemic has a great and unpredictable effect on our lives. I ... [Read more...]

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Previously in this series The “lost boarding pass” puzzle The “deadly board game” puzzle The “knight on an infinite chessboard” puzzle The “largest stock profit or loss” puzzle The “birthday paradox” puzzle The “Spelling Bee honeycomb” puzzle Feller’s “coin-tossing” puzzle The “spam comments” puzzle I love 538’s Riddler column, ... [Read more...]

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Andrea has just released a major update for missingHE (this is my own fork of the main project — but now available on CRAN too), the package we (well, mostly he!) have (has) developed to handle missing data in Bayesian models for cost-effectivene... [Read more...]

In my last post, I analysed the feature importance for the per cent of engineers in Sweden who are women. I found that the size of the region is a feature that is significant for the per cent of engineers in Sweden who are women. The size of the region ... [Read more...]

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Recently, the Association for Computing Machinery’s (ACM’s) Special Interest Group on Software Engineering (SIGSOFT) recognized Greg Wilson as the 2020 recipient of its prestigious Influential Educator Award which is awarded annually to individuals or groups who have made significant contributions to software engineering through education, mentoring or policy. JBR: ... [Read more...]

Andrea has just released a major update for missingHE (this is my own fork of the main project — but now available on CRAN too), the package we (well, mostly he!) have (has) developed to handle missing data in Bayesian models for cost-effectiveness analysis. Additions to the basic structure of the ... [Read more...]

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For way too long now something I had meant to start was a little series about tips, tricks, tools, and toys. I had mentioned the idea a few times to a friend or two, and generally received a thumbs up or a ‘go for it’. But it takes a little ... [Read more...]

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There is nothing so useless as doing efficiently that which should not be done at all. Peter Drucker The most important thing in communication is to hear what isn’t being said. Peter Drucker “Work expands to fill the time available for its completion.” Corollary: “Expenditure rises to meet income.” ... [Read more...]

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This is just a small note (mainly for myself but hopefully may be of some use to a few others!) to remind of how to update a package on a drat repo. Create the source file for the package you want to host on the drat repo using devtools::build(). ... [Read more...]