Global convergence of the recursive kernel regression estimates with applications in classification and nonlinear system estimation

An improved exponential bound on the L/sub 1/ error for the recursive kernel regression estimates is derived. It is shown, using the martingale device, that weak, strong and complete L/sub 1/ consistencies are equivalent. Consequently the conditions on a certain smoothing sequence are necessary and sufficient for strong L/sub 1/ consistency of the recursive kernel regression estimate. The rates of global convergence are also given. Obtained results are applied to recursive classification rules and to nonlinear time series estimation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>