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The influence of the feature vector (FV) content on the CBIR (content-based image retrieval) system efficiency was considered. By using two different FVs and applying three different learning methods, it was shown that the efficiency of retrieving depends on both the FV content and the learning method, independently.
Optimal selection of decomposition levels in wavelet transform used for both HF and LF filtering of ECG signal is described. By analyzing different types of wavelets and selected decomposition levels, the best parameters are determined and their statistical performances are derived. Three Physionet's ECG databases were used as a test-bed.
The simulation model of statistical multiplexer for possible use in video multicoder is considered. The scheduling control is realized by neural network, using modified Kohonen learning law. The modifications are derived in order to avoid the packet loss of the overall input streams even in case of bursty traffic. Scheduling mechanism includes the priority of input streams and the rate control mechanism...
The use of Hopfield-like neural network in solving routing and wavelength assignment (RWA) in all-optical networks is considered. Routing assignment was performed under the constraints of minimal wavelength conversions and minimal congestion. The wavelength assignment assumes four basic methods: first-fit, least-used, most-used, and maximal sum with relative capacity loss algorithm. Different RWA...
The routing in packet switching network is considered as a shortest-path (SP) problem. The new routing algorithm, initially inspired by the Hopfield neural network, is designed to find the optimal link between source and destination node taking into account not only the shortest path but also several in-node constraints, including link bandwidth, incoming flow and flow statistics, addressed to avoiding...
At microwave frequencies lumped element modeling of circuits is not adequate because elements' dimensions are comparable to the signal wavelength. To characterize devices, the most suitable, and from the generator measurement viewpoint the only possible, are scattering S-parameters. S-parameters of time-invariant, linear, networks, containing transmission lines and waveguides, are numerically determined...
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