Monthly Archives: June 2018

Debug Java in Bio7

June 27, 2018
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27.06.2018 In Bio7 R and Java code can be easily combined in the Bio7 platform. For instance to create Graphical User Interfaces in Java (with SWT or JavaFX), transfer image pixel/selection data from ImageJ and finally doing the analysis parts in R code/scripts which can be called from within Java (an easy to use API

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Game of Friendship Paradox

June 27, 2018
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Game of Friendship Paradox

In the introduction of my course next week, I will (briefly) mention networks, and I wanted to provide some illustration of the Friendship Paradox. On network of thrones (discussed in Beveridge and Shan (2016)), there is a dataset with the network of characters in Game of Thrones. The word “friend” might be abusive here, but let’s continue to call...

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One R Package a Day

June 27, 2018
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One R Package a Day

Discover one R package a day by following the @RLangPackage account on Twitter! Inspired by One R Tip Day (@RLangTip) I created a Twitter bot that will feature one package with its description and GitHub URL each day. The R programming language (referred to as #rstats on Twitter) now has over 12,600 packages. Tweeting one each day would take...

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Time after time: calculating the autocorrelation function for uneven or grouped time series

Time after time: calculating the autocorrelation function for uneven or grouped time series

I first learned how to check for autocorrelation via autocorrelation function (ACF) plots in R in a class on time series However, the examples we worked on were all single, long term time series with no missing values and no groups. I figured out later...

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Joining Betting Data

June 26, 2018
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This example will be using Betfair which we hope to add to fitzRoy in the future. Making it easier to compare Squiggle and maybe your own models vs the market! Step One Read in the Betfair Data The first step is just go to the betfair site and download the AFL file with the data we need. I will only be joining...

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Data wrangling operations with quantities

June 26, 2018
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Compatibility with different workflows R base Tidyverse A note on data.table Future directions of units and errors Next steps This is the third blog post on quantities, an R-Consortium funded pro...

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Text-to-speech with R

June 26, 2018
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Computers started talking to us! They do this with so called Text-to-Speech (TTS) systems. With neural nets, deep learning and lots of training data, these systems have gotten a whole lot better in recent years. In some cases, they are so good that you can’t distinguish between human and machine voice. In one of our recent codecentric.AI videos, we compared...

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Bayesian GANs [#2]

June 26, 2018
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Bayesian GANs [#2]

As an illustration of the lack of convergence of the Gibbs sampler applied to the two “conditionals” defined in the Bayesian GANs paper discussed yesterday, I took the simplest possible example of a Normal mean generative model (one parameter) with a logistic discriminator (one parameter) and implemented the scheme (during an ISBA 2018 session). With

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New R package flatxml: working with XML files as R dataframes

June 26, 2018
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The world is flat The new R package flatxml provides functions to easily deal with XML files. When parsing an XML document fxml_importXMLFlat produces a special dataframe that is 'flat' by its very nature but contains all necessary informatio...

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R in Finance highlights

June 26, 2018
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R in Finance highlights

The yearly R in Finance conference is one of my favorites: 1. Titans of the R community are there every year. This year the founder of Rstudio (but much more really), JJ Allaire was a keynote speaker. He gave a talk about Machine Learning with TensorFlow and R. 2. Single track. I like everything, don’t... Related posts: Forecast combinations in R...

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