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A novel application to the optimization of artificial neural networks (ANNs) is presented in this paper. Here, the weight and architecture optimization of ANNs can be formulated as a mixed-integer optimization problem. And then a mixed-integer evolutionary algorithm (Mixed-Integer Hybrid Differential Evolution, MIHDE) is used to optimize the ANN. Finally, the optimized ANN is applied to the prediction...
A novel chaotic immune algorithm (CImmune) is proposed to implement for parameter selection of Support Vector Regression (SVR). After adding chaotic local searching to the artificial immune procedure for parameter optimization of SVR, this method takes the advantages of both Chaos Optimization Algorithm (COA) and Artificial Immune Algorithm (AIA) to improve the effect of SVR efficiently. From experiments...
This paper presents a design procedure to synchronize between unidirectionally coupled MCK hyperchaotic systems based on a sliding mode control. In contrast to the previous works, this approach needs two controllers to realize synchronization even when uncertainties are present in the coupled system. Then, a comparative example is given to emphasize the simplicity and robustness of the proposed method.
In this paper, we combined chaotic search into standard particle swarm search into one and proposed a new algorithm named as chaos particle swarm optimization algorithm(CPSO). The CPSO algorithm may speed the search process, and improve the ability of seeking the global optimal solution and convergence. And the CPSO algorithm was applied to analysis of one-dimensional tracing test date of river stream...
Based on analyzing the influential factors and the characters of flatness forecasting, a hybrid optimized algorithm for RBF neural network based on modified particle swarm optimization (MPSO) is introduced in the paper to forecast the flatness. The chaotic optimization algorithm is introduced to decide the parameters of PSO. The number of units in RBF hidden layer is determined by using the rival...
Motivated by a recently proposed hyper chaos based image encryption algorithm and some successful attacks on it, an improved image algorithm is proposed in this paper. In the proposed algorithm, key-stream depends on the plaintext and the ciphered text; this makes it different in every encryption process, so it is more like a One Time Pad, which is in formation theoretically secure. Some simulations...
In this paper, we analyze fatigue of subjects based on photoplethysmogram (PPG) signal using dimensionality reduction techniques. Various kinds of features can be extracted from PPG, they, however, often represent different meanings. It means that some relationships between PPG signals can be defined based on different measures. Using these characteristics, the set of PPG signal measured in several...
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