­­­­We started healthcare.ai in late 2016 to bring machine learning (ML) to the healthcare masses. As we release version 2.0 of the software (on April 20th), it’s worth stepping back to fully understand why we invest in this open-source project, which is freely available to all. Why would a for-profit ... [Read more...]

First semester teaching is nearly finished, and that means conference season for me. Here are some talks I’m giving in the next two months. Click the links for more details. Melbourne, Australia. 28 May: Panel discussion: Forecasting models, the uncertainties and associated risk Boulder, Colorado, USA. 17-20 June: International Symposium ... [Read more...]

In late June, I will be in New York to teach my 3-day workshop on Forecasting using R. Tickets are available at Eventbrite. This is the first time I’ve taught this workshop in the US, having previously run it in the Netherlands and Australia. It will be based on ... [Read more...]

Moveme! I recently worked with a dataset that had over 100 columns and had to keep moving the order of the columns such that I could easier conduct my analysis. For example, whenever you try and conduct a multiple-factor analysis (FactoMineR::MFA), the function requires specific grouping of your variables to ... [Read more...]

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Semantic dashboard is on! Are you fed up with ordinary shinydashboard look? Give your app a new life with Semantic UI support. It cannot be any easier! Install semantic.dashboard and load it instead to your app. It’s compatible with classical shinydashboard! You don’t have to start from ... [Read more...]

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- My paper about the penetration of predatory journals in Brazil, Is predatory publishing a real threat? Evidence from a large database study, just got published in Scientometrics!. The working paper version is available in SSRN. This is a nice example of a data-intensive scientific work cycle, from gathering data to ... [Read more...]

My paper about the penetration of predatory journals in Brazil, Is predatory publishing a real threat? Evidence from a large database study, just got published in Scientometrics!. The working paper version is available in SSRN. This is a nice example o... [Read more...]

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Motivation You may have an R setup that is not using hardware resources in an efficient way. Linear algebra libraries such as OpenBLAS and Intel MKL can compute matrix/vector operations with all available processing power to significantly reduce co... [Read more...]

Contents Introduction How to use this article Selecting (subsetting) relevant data from a data.frame Constructing meaningful subsets simply and safely More ways to provide subset indices Alternatives to base R TL;DR - Just want the code Exercises References Exercise answers Introduction In the previous article we discussed and ... [Read more...]

Contents Introduction How to use this article Selecting (subsetting) relevant data from a data.frame Constructing meaningful subsets simply and safely More ways to provide subset indices Sorting data Sorting by multiple vectors with different order Alternatives to base R TL;DR - Just want the code Exercises References Exercise ... [Read more...]