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By combining the autoassociative model with the heteroassociative model, we propose a second-order semi-complex IPA neural network. In this neural network, the real part or the imaginary part of a complete or partial complex vector not only addresses the corresponding part of the complex vector prestored in the neural network by autoassociation, but also addresses the corresponding imaginary or real...
A simplified two-step quaternary signed-digit addition algorithm is presented. In contrast to the previously reported techniques using a large number of six-variable or four-variable minterms, the proposed algorithm requires only 10 minterms in the first step and 6 minterms in the second step. Furthermore, our scheme uses only two variables for each minterm. Therefore, the information to be stored...