 


  Data-related inputs:

    x is a vector or matrix of the independent (or predictor) variables.
      Rows of x represent subjects, columns represent variables.
      Generally, local regression would be used with 1-4 independent
      variables. In higher dimensions, the curse-of-dimensionality,
      as well as the difficulty of visualizing higher dimensional
      surfaces, may limit usefulness.

    y is the column vector of the dependent (or response) variable.
      For density famil