Tonight at the F#unctional Londoners meetup:, 6:30pm, SkillsMatter, London: In this regular meetup we'll take on one or more programming challenges in F#. All levels of experience welcome, from beginner to expert. This month we'll go hands on with a Machine Learning introduction in F# using sample data from Kaggle to predict who lives and who dies on the Titanic! To get the most from the session please try and bring a laptop along with F# installed. Installing F#: * Use F# on Windows * Use F# on Mac OSX * [...]

Problem The primes 3, 7, 109, and 673, are quite remarkable. By taking any two primes and concatenating them in any order the result will always be prime. For example, taking 7 and 109, both 7109 and 1097 are prime. The sum of these four primes, 792, represents the lowest sum for a set of [...]

Besides having one of the coolest names around, Random Forest is an interesting machine learning algorithm, for a few reasons. It is applicable to a large range of classification problems, isn’t prone to over-fitting, can produce good quality metrics as a side-effect of the training process itself, and is very suitable for parallelization. For all these reasons, I thought it would be interesting to try it out in F#. The current implementation I will be discussing below works, but isn’t production ready (y[...]

We recently found out about an interesting, undocumented behaviour of Amazon’s Elastic Load Balancing (ELB) service – that health check pings are performed by each and every instance running your ELB service at every health check interval. Intro to ELB But first, let me fill in some background information for readers who are not familiar [...]