Same task, but third classification algorithm – naive Bayes. I was looking forward, because a MATLAB script was already written and I naively thought my only work is to replace one function name (fitcknn to fitcnb). My good mood lasted until I realized that optimization of hyperparameters did not have Read more…
The aim of this project is still the same, only a classification algorithm will be different. No more trees anymore. They will be replaced by nearest neighbors, but the method is the same as previously. K-nearest neighbors (k-NN) is a simple classification algorithm, which assign a class to an item Read more…
Warning: this story has no happy ending. In the previous post I promised that we will grow better trees. For these kinds of problems optimization is used. In MATLAB, function fitctree which returns fitted classification tree can have an additional argument ‘OptimizeHyperparameters’ with value ‘auto’ or ‘all’ (and also ‘none’, Read more…
In the introductory post, I explained why artificial intelligence and machine learning matters. Leave out sci-fi machines aside, we have to start somewhere – for example with trees. Goals have been set: we want to predict a class of wine based on its properties. We will solve this task using Read more…
Artificial intelligence (AI) – you probably have heard something about it as it recently gains more popularity. Movies tend to portray artificial intelligence as robots in sci-fi and media are trying to attract attention by fancy headlines such as: “Artificial Intelligence: The end of the human race?”, “Machines Are Getting Read more…