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In order to obtain the effective input vector for the prediction of multivariate time series, a generic phase space reconstruction method combining classical reconstruction technology with reduction theory of rough sets was proposed. Firstly, the embedding dimension was determined by minimizing the mean one-step prediction error and the original reconstruction phase space was obtained. Then, the original...
Security issues which exist while sequences produced by Logistic chaotic map used in encryption is analyzed. Moreover, an improved algorithm to the problem is proposed. The algorithm solves the some common problems of Logistic chaotic map such as ldquostable windowsrdquo, blank windows and uneven distribution of sequences etc. by increasing bifurcation parameters. It overcomes the defects of sequences...
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