code: public static Distribution guessLambda1(DataSet d)
      {
          int N = d.size();
          return new LogUniform(1e-7/N, 1e-3/N);
      }
docs: Guess the distribution to use for the regularization term
  {@link #setLambda0(double) &lambda;<sub>1</sub>} .
  
  @param d the data set to get the guess for
  @return the guess for the &lambda;<sub>1</sub> parameter