Regression measure defined as $$ \mathop{\mathrm{median}}_i \left[ \left( t_i - r_i \right)^2 \right]. $$

Note

The score function calls mlr3measures::medse() from package mlr3measures.

If the measure is undefined for the input, NaN is returned. This can be customized by setting the field na_value.

Dictionary

This Measure can be instantiated via the dictionary mlr_measures or with the associated sugar function msr():

mlr_measures$get("medse")
msr("medse")

Meta Information

  • Type: "regr"

  • Range: \([0, \infty)\)

  • Minimize: TRUE

  • Required prediction: response

See also