Effective use of RevoScaleR Transformations

As mentioned previously, several important RevoScaleR functions include provisions for transforming data within the function itself, rather than require separate steps in addition to the function call. This is advantageous, since it means that large datasets can be read once instead of having to be read repeatedly by several functions. rxImport, rxDataStep, and rxSplit support […]
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Power BI: Creating and Sharing Power BI Templates

Templates are great for word processors and spreadsheets; they save time and enforce consistency. Templates are great for Power BI, too, but Power BI templates must solve a minor complication not faced by its sister Office applications. The measures, columns, and visualizations that collectively constitute a Power BI report are based on a specific data […]
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Using Tensorflow with R

When examining the available selection of machine learning environments, even the most ardent R user may suffer some pangs of Python envy. Most machine learning environments, such as Google’s Tensorflow, are programmed in C++ for maximum performance and maximum utilization of hardware resources such as GPUs (graphics processing units). The Tensorflow API, however, is designed […]
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Loading New R Packages into AzureML

Microsoft Azure ML provides over 500 individual R packages for use in R scripts. It is almost certain, however, that at some point you will wish to use an R package not available by default. Several years ago, before Revolution Analytics was acquired by Microsoft, Andrie deVries created a very useful package called miniCRAN. This […]
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How to Interpret a Q-Q Plot

Statisticians have developed a remarkably powerful set of tools for analyzing normally distributed data. Too bad real data is never normally distributed. Fortunately for us, most of the time “close enough” is all we really need. But how are we to know? One quick and effective method is a look at a Q-Q plot. The […]
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