Scala for Machine Learning
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Mathematical notation for the curious

Each chapter contains a small section dedicated to the formulation of the algorithms for those interested in the mathematical concepts behind the science and art of machine learning. These sections are optional and defined within a tip box. For example, the mathematical expression of the mean and the variance of a variable X mentioned in a tip box will be as follows:

Tip

Mean value of a variable X = {x} is defined as:

The variance of a variable X = {x} is defined as: