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Yes, feedforward neural networks can be trained using adaptive, global, and extended Kalman filters. Kalman filters are recursive mathematical algorithms used to estimate the state of a dynamic system over time. They are widely used in various applications, including signal processing, control systems, and machine learning.

In neural network training, Kalman filters can be used to estimate the weights of the network based on the output error and the input data. Adaptive Kalman filters can adjust the parameters of the filter over time to improve the estimation accuracy. Global Kalman filters can be used to estimate the weights of the entire network simultaneously, while extended Kalman filters can handle nonlinearities in the system equations.

Overall, Kalman filters can be a useful tool in training feedforward neural networks, particularly in situations where there is uncertainty or noise in the input data. However, the choice of the specific filter and its parameters should depend on the specific problem at hand and the performance requirements of the neural network.