We are looking for a person with good skills and experience in Natural Language Processing for our project on the boundary of history and social network analysis. The project involves analysis of historical documents and written communication (e.g. letters) in Portuguese. Skills/experience: Skills and experience in text mining ... [Read more...]

Proposed solution to Euler Problem 29: Distinct Powers in the R language for statistical computing. Continue reading → The post Euler Problem 29: Distinct Powers appeared first on The Devil is in the Data. [Read more...]

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rOpenSci's mission is to promote a culture of open, transparent, and reproducible research across various research domains. Everything we do, from developing high-quality open-source software for data science and, software review, to building community through events like our community calls and annual unconference are all geared toward lowering barriers to ... [Read more...]

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Data wrangling is a task of great importance in data analysis. Data wrangling, is the process of importing, cleaning and transforming raw data into actionable information for analysis. It is a time-consuming process which is estimated to take about 60-80% of analyst’s time. In this series we will go ... [Read more...]

Excellent summary here. [Read more...]

I’ll often keep non-sensitive data on Dropbox so that I can access it on all my machines without gumming up git. I just wrote a small script to find the Dropbox location on each of my computers automatically. The crucial information is available here, from Dropbox. My small snippet ... [Read more...]

A few years ago, I wrote a post Don’t teach built-in plotting to beginners (teach ggplot2). I argued that ggplot2 was not an advanced approach meant for experts, but rather a suitable introduction to data visualization. Many teachers suggest I’m overestimating their students: “No, see, my students are ... [Read more...]

In the sponsor presentation for Microsoft at the useR!2017 conference in Brussels this morning, I thought I'd share how perceptions of R have changed over the years. Today, R known as is popular, comprehensive, accepted, scalable, production-ready and supported software environment for data analysis, but that wasn't always the case. ... [Read more...]

I’ll often keep non-sensitive data on Dropbox so that I can access it on all my machines without gumming up git. I just wrote a small script to find the Dropbox location on each of my computers automatically. The crucial information is available here, from Dropbox. My small snippet ... [Read more...]

For thise case, we can write Bayes formula as: The two components in the numerator are: The probability of the data given a \( \mu \) and \( \sigma \), also called the likelihood function: \( p(y|\mu,\sigma) \) The probability of a given \( \mu \) and \( \sigma \), before seeing any data; also called the ... [Read more...]

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INTRODUCTION iPlots is a package which provides interactive statistical graphics, written in Java. You can find many interesting plots such as histograms, barcharts, scatterplots, boxplots, fluctuation diagrams, parallel coordinates plots and spineplots. The amazing part is that all of these plots support querying, linked highlighting, color brushing, and interactive changing ... [Read more...]

Here's a quick roundup of some case studies published recently on the Microsoft Customer Stories portal, with examples of companies running R in production environments using the Microsoft stack. eToro, the social trading network, uses Microsoft R Server and Azure Machine Learning so that investors can automatically duplicate market strategies ... [Read more...]

Notice jsonlite has a stream_in() function that works much better and faster. Do not use this I ended up writing this while working on a…Continue ReadingFunction to Read NDJSON (Newline Deliminated JSON) Files [Read more...]