Introducing the goalmodel R package

October 30, 2018
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I have written a lot about different models for forecasting football results, and provided a lot of R code along the way. Especially popular are my posts about the Dixon-Coles model, where people still post comments, four years since I first wrote them. Because of the interest in them, and the interest in some of the other models I have written about, I decided to tidy up my code and functions a bit, and make an R package out of it. The result is the goalmodel R package. The package let you fit the ordinary Poisson model, which was one of the first models I wrote about, the Dixon-Coles model, The Negative-Binomial model, and you can also use the adjustment I wrote about in my previous update.

The package contains a function to fit the different models, and you can even combine different aspects of the different models into the same model. You can for instance use the Dixon-Coles adjustment together with a negative binomial model. There is also a range of different methods for making prediction of different kinds, such as expected goals and over/under.

The package can be downloaded from github. It is still just the initial version, so there are probably some bugs and stuff to be sorted out, but go and try it out and let me know what you think!

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