Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 414–422
Abstract
A possible interpretation, in terms of fuzzy classification models (fuzzy classifiers), of one of the general principles of choosing a scientific theory – a consistency principle – is considered. A concept of a stability measure of unsupervised fuzzy classifiers is introduced. A general scheme of computing the above measure is proposed. A concrete algorithm for implementing the general scheme and examples of its application are given.
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 406–413
Abstract
A possible interpretation, in terms of fuzzy classification models (fuzzy classifiers), of one of the general principles of choosing a scientific theory – a consistency principle – is considered. Supervised self-guessing fuzzy classifiers are determined. A theorem on character of restrictions induced on a set of supervised fuzzy classifiers by a self-guessing requirement is proved. Feasible alternatives of using the self-guessing property while constructing supervised fuzzy classifiers are analyzed.
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 399–405
Abstract
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.
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 384–398
Abstract
The configuration and essential features of the Computer-Aided Test Program Design System (CATPDS) which generates test programs in an adapted ATLAS subset for analogue units under test are discussed. The requirements for that class of systems are formulated and how to meet these requirements is proposed. The formal model to describe the process of an interactive test program generation and incremental translation is presented.
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 360–383
Abstract
An analytical equation for a generalization error of minimum empirical error classifier is derived for a case when true classes are spherically Gaussian. It is compared with the generalization error of a mean squared error classifier – a standard Fisher linear discriminant function. In a case of spherically distributed classes the generalization error depends on a distance between the classes and a number of training samples. It depends on an intrinsic dimensionality of a data only via initialization of a weight vector. If initialization is successful the dimensionality does not effect the generalization error. It is concluded advantageous conditions to use artificial neural nets are to classify patterns in a changing environment, when intrinsic dimensionality of the data is low or when the number of training sample vectors is really large.
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 351–359
Abstract
The universal structural type of information units-entities is presented the paper. This approach can be recommended for data base modelling at the conceptual and relational levels.
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 335–350
Abstract
This paper is devoted to research aspects of the convergence rate of conservative difference schemes (d.s.) with time-adaptive grids in cases, where a space grid is irregular and the third boundary-value problem is considered for one-dimensional linear parabolic equations. The unconditional convergence of created d.s. is proved in a C-metric at the rate O(h2+τ01/2).
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 322–334
Abstract
An attempt to explain a basic nature of the information processing hierarchy in Organizational Systems is made. A framework for intelligent information processing at managing is presented. Organizational System (Enterprise) as the framework of so called elementary management cycles is decomposed. The structure of elementary management cycle (EMC) is presented and its properties discussed. A taxonomy of information processing hierarchies is based and presented. Such considerations seems to be important for the design of intelligent management information systems.
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 312–321
Abstract
The hierarchy of information units and interactions in managing of Organizational Systems is ruther complicated. Interactions between departments of different levels of hierarchy are named “co-ordination” (Mesarovic, Mako, Takahara, 1970). This paper deals with the coordination as the “vertical” informational interfaces between the units called “elementary management cycles” which compose the structure of managing process.
The taxonomy of co-ordination processes presented in this paper is based on the decomposition of information processing at managing in so called the Space of Processes (Gudas, 1991).
Journal:Informatica
Volume 4, Issues 3-4 (1993), pp. 303–311
Abstract
A classification of teaching forms is introduced. One-to-many (group) distance teaching forms are discussed with respect to the means, which are used in the programming teaching process. The role and the possibilities of electronic mail in this process is discussed. The experience of Lithuanian Young Programmers' School by Correspondence is referred to.