I have a challenge: extracting data from an enormous JSON file. The structure of the file is not ideal: it’s a mapping at the top level, which means that for most standard approaches the entire document needs to be loaded before it can be processed. It would have been ...

I have a challenge: extracting data from an enormous JSON file. The structure of the file is very challenging: it’s a mapping at the top level, which means that for most standard approaches the entire document needs to be loaded before it can be processed. It would have been ...

Define a one-line R function FUN that provides the following output: FUN(seq(from = 0, to = 20, by = 0.1)) FUN(seq(from = 0, to = 100, by = 0.1)) FUN(seq(from = 0, to = 200, by = 0.1)) Answer: click to reveal We can write the function as follo...

Authors: Ivan Svetunkov, Nikolaos Kourentzes, Keith Ord. Journal: Naval Research Logistics Abstract: Exponential smoothing has been one of the most popular forecasting methods used to support various decisions in organisations, in activities such as inventory management, scheduling, revenue management and other areas. Although its relative simplicity and transparency have made ...

It is the day after rstudio::conf(2022), and I’m sitting in the lobby of the ridiculously oversized conference hotel, trying to collect my thoughts and impressions. It was a densely packed two days of presentation and events (plus the earlier two d...

Where it all began Sometimes it takes just a passing comment to inspire a mountain of change. For this effort, it began with a discussion focused around addressing “confusing status differences on the homepage.” A greater collection of issu...