## Volume 2, No. 4, 2007

- Gordeev R.N.

**«Possibilistic mathematical programming tasks stability»**

Problems of sensitivity to perturbations in possibilistic programming problems were considered. For the solution set mapping and for the optimal value function, stability results are derived in general case [Yazenin, 1987, 1996]. Example shows the necessity of the formulated conditions and illustrates sharpness of the results in the respective settings.Resources: elibrary.ru.

- Grebenshikova M.A., Sorokin S.V.

**«Feasibility of fuzzy constraints systems with fuzzy binary relations»**

Fuzzy linear programming problems with fuzzy relations are analysed to uncover infeasible constraints. Method for defining maximal possibility of constraint feasibility is developed.Resources: elibrary.ru.

- Soldatenko I.S.

**«On solution method for the maximization of fuzzy goal achievement possibility task in case of mutually Tw-related parameters»**

Task of maximization of fuzzy goal achievement possibility in case of mutually Tw-related parametes is investigated. Indirect solution method based on construction of equivalent deterministic analogue is proposed.Resources: elibrary.ru.

- Averkin A.N., Kostuchenko O.V., Titova N.V.

**«Multicriterial analysis of fuzzy objects with experts' fuzzy estimations clustering»**

The article represents a multicriterial alternatives' ranging method involving a set of the experts' fuzzy estimations. The experts' fuzzy estimations clustering method based upon the fuzzy criteria weights is also given in the article.Resources: elibrary.ru.

- Batyrshin I.Z.., Koshulski A., Sheremetov L.B., Klimova A.S., Panova A.M.

**«Oil wells interaction analysis based on hybrid clustering of wells productivity time series»**

In the article hybrid clustering is used in order to analyze interaction between different oil wells. Hybrid clustering helps to solve two problems: detect oil wells that belong to the same collector and detect wells that probably belong to different collectors but are interconnected by means of ground water.Resources: elibrary.ru.