Pub. online:1 Jan 1998Type:Research ArticleOpen Access
Volume 9, Issue 2 (1998), pp. 235–252
In the present paper, the method of structure analysis for multivariate functions was applied to examine the global sensitivity of three complex models: the HIV/AIDS infection spread, radar search, and the multiple criteria decisions.
The investigation of global sensitivity exposed the most influential parameters or their groups. This knowledge makes it possible to concentrate efforts to obtain more exact values of these main parameters.
As a rule, only a small part of model parameters has a significant influence.
Pub. online:1 Jan 1997Type:Research ArticleOpen Access
Volume 8, Issue 4 (1997), pp. 583–598
In the present paper, a method of global optimisation (structure adapted search) is proposed. It uses the grid of trial points which are more uniformly distributed for the projections on variables or their groups that make more influence.
The paper uses a set of test models to demonstrate the merit of the approaches. The efficiency of structure adapted search as compared to the random search is investigated. The results of using the new approach may be treated as a success.
Pub. online:1 Jan 1993Type:Research ArticleOpen Access
Volume 4, Issues 3-4 (1993), pp. 399–405
The existing decomposition technology of cooperative developments of multidiscipline technical complexes (MTC) don't provide global optimality die to the imposiolity of solving the problem of developing principles of local project solutions made by a dreat number of specialists of different branches of science. This problem is supposed to be solved by means of controlling of real-time of MTC space structural-parametric synthesis in terms of hierarchically organized variety of assumed scheme-structural and technological solutions. The basis algorithm: 1) realization method for a variety of possible structural organizations of a complex technical system in the form of a network analyzer; 2) method combining synthesis combinatorial operations and parametric operations in search for short routes of the developed network analyzer.
The algorithm eliminates the necessity for parametric optimization in macroparameters of all possible structural realizations of a complex systemleaving the best variant optimization.