Blog Archives

An AI pitches startup ideas

October 13, 2017
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Take a look at this list of 13 hot startups, from a list compiled by Alex Bresler. Perhaps one of them is the next Juicero? FAR ATHERA: A CLINICAL AI PLATFORM THAT CAN BE ACCESSED ON DEMAND. ZAPSY: TRY-AT-HOME SERVICE FOR CONSUMER ELECTRONICS. MADESS: ON-DEMAND ACCESS TO CLEAN WATER. DEERG: AI RADIOLOGIST IN A HOME SPER: THE FASTEST, EASIEST...

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A cRyptic crossword with an R twist

October 12, 2017
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A cRyptic crossword with an R twist

Last week's R-themed crossword from R-Ladies DC was popular, so here's another R-related crossword, this time by Barry Rowlingson and published on page 39 of the June 2003 issue of R-news (now known as the R Journal). Unlike the last crossword, this one follows the conventions of a British cryptic crossword: the grid is symmetrical, and eschews 4x4 blocks...

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Tutorial: Azure Data Lake analytics with R

October 11, 2017
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The Azure Data Lake store is an Apache Hadoop file system compatible with HDFS, hosted and managed in the Azure Cloud. You can store and access the data within directly via the API, by connecting the filesystem directly to Azure HDInsight services, or via HDFS-compatible open-source applications. And for data science applications, you can also access the data directly...

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R’s remarkable growth

October 10, 2017
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R’s remarkable growth

Python has been getting some attention recently for its impressive growth in usage. Since both R and Python are used for data science, I sometimes get asked if R is falling by the wayside, or if R developers should switch course and learn Python. My answer to both questions is no. First, while Python is an excellent general-purpose data...

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A cRossword about R

October 6, 2017
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A cRossword about R

The members of the R Ladies DC user group put together an R-themed crossword for a recent networking event. It's a fun way to test out your R knowledge. (Click to enlarge, or download a printable version here.) If you get stuck, you can find the answers here or at the link below. And if you'd like to join...

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In case you missed it: September 2017 roundup

October 5, 2017
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In case you missed them, here are some articles from September of particular interest to R users. The mathpix package converts images of hand-drawn equations to their LaTeX equivalent. R 3.4.2 is released. Applying image featurization to the problem of classifying wood knots in lumber. Microsoft ML Server 9.2, which provides operationalization for R, is released. A roundup of...

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Introducing the Deep Learning Virtual Machine on Azure

October 4, 2017
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Introducing the Deep Learning Virtual Machine on Azure

A new member has just joined the family of Data Science Virtual Machines on Azure: The Deep Learning Virtual Machine. Like other DSVMs in the family, the Deep Learning VM is a pre-configured environment with all the tools you need for data science and AI development pre-installed. The Deep Learning VM is designed specifically for GPU-enabled instances, and comes...

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Create Powerpoint presentations from R with the OfficeR package

October 3, 2017
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Create Powerpoint presentations from R with the OfficeR package

For many of us data scientists, whatever the tools we use to conduct research or perform an analysis, our superiors are going to want the results as a Microsoft Office document. Most likely it's a Word document or a PowerPoint presentation, it probably has to follow the corporate branding guidelines to boot. The OfficeR package, by David Gohel, addresses...

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Comparing assault death rates in the US to other advanced democracies

October 2, 2017
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Comparing assault death rates in the US to other advanced democracies

In an effort to provide context to the frequent mass shootings in the United States, Kieran Healy (Associate Professor of Sociology at Duke University) created this updated chart comparing assault death rates in the US to that of 23 other advanced democracies. The chart shows the rate (per 100,000 citizens) of death caused by assaults (stabbings, gunshots, etc. by...

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Convert hand-drawn equations to LaTeX with the mathpix package

September 29, 2017
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Statistics involves a lot of mathematics, so one of the nice things about report-generation systems for R like Rmarkdown is that it makes it easy to include nicely-formatted equations by using the LaTeX syntax. So, if we want to include the density function of the Guassian Normal distribution: $$ \frac{1}{{\sigma \sqrt {2\pi } }} e^ { - \frac{ -...

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