articles

In this paper an implementation of neural network trained by algorithm based on Levenberg-Marquardt method is presented. With NVIDIA CUDA technology neural network training is accelerated from 8 to 100 times. Implemented neural network is applied for recognition of noisy images.

Takagi-Sugeno fuzzy models have recently become a quite powerful engineering tool for complex systems modeling and control. However many tasks including the neurofuzzy identification and control stability problem are so far unsolved. The paper suggests the recurrent relaxation algorithm for identification of parameter consequents of Takagi-Sugeno fuzzy rules. Using «input-to-state» approach the stability of this algorithm is proving.

Despite the existing software systems which allow making the financial calculations while providing assessment services, most practicing appraisers use mostly the MS Excel tools when determining market or other values. The reason for this is convenience and availability of formula editor. The paper considers an example of calculating the market value using the comparative approach to the assessment — a method of correlation-regression dependence in MS Excel environment.

The article concerns various ways of information systems acquisition. The authors investigate opportunities of using the service oriented approach for IT-architecture constructing. They apply fuzzy sets to account for the uncertainty arising when selecting IT-services within a service oriented architecture.

The main graphic notations describing business processes are discussed. Advantages and disadvantages of these notations are indicated and recommendations on the efficient use of the notations and supporting tools under certain conditions are given.

There is considered algorithms and methods of evaluation of best order of requirements implementation in software development from point of maximization of profit from the project. Software where are used the methods is considered. Algorithms and methods for calculating the best order of implementation of the requirements for software development in terms of maximizing the profits from the project are considered and the software тthat implements these methods is described.