A lightweight package that adds progress bar to vectorized R functions (*apply). The implementation can easily be added to functions where showing the progress is useful (e.g. bootstrap). The type and ...

Some algorithms are more efficient than others. We would prefer to chose an efficient algorithm, so it would be nice to have metrics for comparing algorithm efficiency. The complexity of an algorithm ...

This jingle has helped generations of algebra students recall the quadratic formula that solves every equation of the form $latex ax^2+bx+c=0$. The formula is as ...

Jason Fernando is a professional investor and writer who enjoys tackling and communicating complex business and financial problems. Khadija Khartit is a strategy, investment, and funding expert, and ...

ROI is an important measure of an investment's performance but it has some drawbacks. Andrew Beattie was part of the original editorial team at Investopedia and has spent twenty years writing on a ...

Microsoft Power BI does a lot of calculating internally, but when you need more, turn to Power BI quick measures—you need no knowledge of DAX. Want to Understand Machine Learning? Here's a ...

Joyal’s proof was published here: André Joyal, Une théorie combinatoire des séries formelles. Advances in Mathematics 42 (1981), 1–82. (I try not to link to Elsevier, as I’m permanently furious with ...