Previously in this series: Understanding the beta distribution Understanding empirical Bayes estimation Understanding credible intervals Understanding the Bayesian approach to false discovery rates Understanding Bayesian A/B testing Understanding beta binomial regression Understanding empirical Bayesian hierarchical modeling In this series on empirical Bayesian methods on baseball data, we’ve been ... [Read more...]

I’ve been playing with Django for a while now and I’m loving it. Don’t get me wrong, I still love Shiny, but Django is pretty tough to beat for data-heavy projects and managing user sessions. For deployment, I’ve been using Heroku and am very h... [Read more...]

In my last post, I went over how weighting and sampling methods can help to improve predictive performance in the case of imbalanced classes. I also included an applied example with a simulated dataset that used the area under the ROC curve (AUC) as th... [Read more...]

If you cache code chunks when using knitr to generate reproducible documents then you’ve likely had the issue arrise of needing to load the results of cached chunks into an active interactive R session. The functions lazyload_cache_dir and lazyload_... [Read more...]

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With my Telegram account connected to @TeleR, the force of R can always be with me, where I have data. The following is a screenshot of my mobile: If you want to have R where you are too, you will only need a Telegram account, then search for the pu... [Read more...]

You can use R's Shiny to create an interactive dashboard with this application, make your database explorable without knowing SQL or R! [Read more...]

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Like last year, lets have some fun with the Plotly package. We’ll try out Plotly’s new animation capabilities. [crayon-586941b022674144350101/] You should now have something like this: For mode details visit: Plotly for R by Carson Seivert. [Read more...]

The R code for this tutorial on Methods of Distributional Semantics in R is found in the respective GitHub repository. You will find .R, .Rmd, and .html files corresponding to each part of this tutorial (e.g. DistSemanticsBelgradeR-Part2.R, DistSemant... [Read more...]

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Using package BatchGetSymbols - One of the great things of working in finance is that financial datasets are freely available from sources such as Google and Yahoo Finance. This is an excelent feature for building up to date conte... [Read more...]

At some point I found the need to manipulate and analyze each digit of a series of integer values, perform statistics with each of them and in some occasions add zeros at the beginning of each number. So I gave myself the task of performing the following script where data ... [Read more...]

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You can use R's Shiny to create an interactive dashboard with this application, make your database explorable without knowing SQL or R! [Read more...]

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Summary In this blog post I will show you how to make your own personal assistant (think Siri, Cortana, Alexa) in R, very quickly. This will be done in three steps: Get R to recognise your voice and convert it to text Set up a system which us... [Read more...]

APPLICATION LAYOUT & REACTIVITY The fourth part of our series is “separated” into two “sub-parts”. In the first one we will start building the skeleton of our application by using tabsetPanel. This is how we will separate the sections of our app and also organize its structure better. In the second ... [Read more...]