(a) Use cross-validation to choose the side lengths of rectangular partitioning such that the resulting estimate approaches the rate of convergence in Problem 4.7. (b) Use cross-validation to choose...

(a) Use cross-validation to choose the side lengths of rectangular partitioning such that the resulting estimate approaches the rate of convergence in Problem 4.7.

(b) Use cross-validation to choose the scaling for product kernel estimates such that the resulting estimate approaches the rate of convergence in Problem 5.7. Hint: Proceed as in Problem 7.7.