sentences:  The SRM principle addresses this problem by balancing the model's complexity against its success at fitting the training data.In practical terms, Structural Risk Minimization is implemented by minimizing formula_1, where formula_2 is the train error, the function formula_3 is called a regularization function, and formula_4 is a constant.formula_3 is chosen such that it takes large values on parameters formula_6 that belong to high-capacity subsets of the parameter space.