In many models for mobile and distributed computations, agents and processes can be nested inside ambients, domains, networks, etc. Thus, the global state is a tree-like structure, which evolves according to some (sub)tree rewriting rules. In order to applying a subtree rewriting rule, we have to find a matching of the rule redex within the global state. In this paper we address this problem, n...

A multigrid method based on cyclic reduction strategy is proposed to solve huge, nonsymmetric singular linear systems arising from Markovian queueing networks. A simple way to construct the matrix-dependent prolongation and restriction operators is presented in this paper. Numerical results for multiple queues are given to illustrate the efficiency and robustness of our methods.

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This paper describes the application of evolution strategies to the design of interacting multiple model (IMM) tracking filters in order to fulfill a large table of performance specifications. These specifications define the desired filter performance in a thorough set of selected test scenarios, for different figures of merit and input conditions, imposing hundreds of performance goals. The de...

As a major concern in designing various data mining applications, privacy preservation has become a critical component seeking a trade-off between mining performances and protecting sensitive information. Data perturbation or distortion is a widely used approach for privacy protection. Many privacy preservation approaches were developed, either by adding noises or by matrix decomposition method...