In this paper, the extended kernel recursive least squares (Ex-KRLS) algorithm is reviewed and analyzed. We point out that the Theorem 1 in [10] is not always correct for general cases. Furthermore, the Ex-KRLS algorithm for tracking model is just a random walk KRLS algorithm. Finally, this algorithm is explained as a special Kalman filter in the reproducing kernel Hilbert space.
Weifeng LiuIl Memming ParkYiwen WangJosé C. Prı́ncipe
Pingping ZhuBadong ChenJosé C. Prı́ncipe
Hossein MohamadipanahMahdi HeydariGirish Chowdhary
Yaakov EngelShie MannorRon Meir
Badong ChenSonglin ZhaoPingping ZhuJosé C. Prı́ncipe