Score using a cost-benefit matrix. Scores quantify the benefits of a given value, so greater numeric
scores represents a better score. Costs and scores can be negative, indicating that a value is not beneficial.
For example, in the case of monetary profit, a negative cost and/or score represents loss of cash flow.
Create instance of CostBenefitMatrix.
Calculate the percent difference between scores.
Apply a learned threshold to predicted probabilities to get predicted classes.
Calculates cost-benefit of the using the predicted and true values.
Learn a binary classification threshold which optimizes the current objective.
Returns a numerical score indicating performance based on the differences between the predicted and actual values.
Validates the input based on a few simple checks.