Loss function

This property uses the loss function set when the regression trainer was initialized. In the case of our linear regression example application, we used the default constructor, which for SDCA is defaulted to the SquaredLoss class. 

Other regression loss functions offered by ML.NET are the following:

• TweedieLoss (used for Tweedie regression models)
• PoissonLoss (used for Poisson regression models)

The idea behind this property is to allow some flexibility when it comes to evaluating your model compared to the other four properties that use fixed algorithms for evaluation.