Published:
2011-09-01
Articles
-
The problem of interrelation between changes of currency and stock markets is considered. The purpose of researches is to establish basic possibility of restoration and forecasting of one market state evolution on quotations trajectories of another market. Features of correlation characteristics changes depending on the size of an observations window used for their estimation are established
-
Nowadays more and more different bio-inspired approaches (based on a biological metaphor) for the computer and networks security systems are mentioned and advertised. Traditional computer-based systems and their functionality are often limited by different conditions. Due to frequent minor errors, these systems are subject of failure. They lack scalability, have low adaptation ability to changeable conditions of functioning and its goals. As opposed to traditional computer-based systems, biological systems are often quite reliable. They have great self-protection mechanisms, highly scalable, adaptable and able to self regeneration. These properties of biological systems can be used to construct technical systems (including information security systems). The paper considers different approaches to the protection of computer systems and networks, which are based on a biological metaphor.
-
The prototype of the program complex, used for demonstration of basic possibility for estimation the protection of personnel of information system from socioengineering attacks on the base of generalized approach, focused on analysis of trees of attacks, is described. The representation of information system and its personnel in the specified program complex is based on hierarchy of information models, which consist of information model of the user, information model of the users group, information model of control area, information model of hardware and software complex, information model of critical information objects (system of documents), information model of information system itself and links between corresponding objects. The list of technologies, used during the development of this product, the reasons for using this technologies and brief substantiation of some technical solutions are worked out. The example of proceeding of program complex prototype during editing the information about socioengineering attack, as well as during the imitation of socioengineering attack on the recompensation type on the personnel of this system is considered.
-
In the article new approaches to an estimation of hearing quality with the use of mobile computers are considered. New classification of hearing research methods allowing to allocate possibilities of working out of elements of control systems as a part of computers are suggested. Models of research of the acoustic analyzer of the person allowing to use classical techniques of research of hearing in existing control systems of mobile computers are considered. The modified technique of audiologic researches, namely the basic tonometer experiences (experiments of Rinne, Weber, Zhelle and Federichi) varying in time and qualifying characteristics (to 50 %) is presented.
-
In the theory of algebraic Bayesian networks, there are four operations classified as a kind of local synthesis of consistent truth estimates: knowledge pattern consistency verification, knowledge pattern reconciliation, a posteriori inference, and knowledge pattern enclosing reconciliation. The paper presents a knowledge pattern model formalization based on the matrix-vector terms. The model itself is a conjuncts ideal with scalar or interval truth probabilistic estimates. A specification of all four operations of the local synthesis has been introduced in the matrix-vector terms.
-
Methods for measuring music similarity allow for implementations of completely automated content-based music recommendation systems (similar to Pandora, but without the manual work of expert musicologists). This paper presents a novel method of measuring music harmony similarity based on an original probabilistic graphical model. The model includes information about the current chord and mode; we introduce a hidden parameter, style, which governs the probability of using of a certain chord within the context of a certain mode, and propose to measure the similarity as a distance between parameter vectors of the probability distribution function for style. Similar to some methods for extracting chord progressions, our model includes neither the rhythmic information nor the dependencies between neighboring chords. We describe the implementation of our model done with the Infer.NET system and show experimental results on generated data. The results of experiments with real-world data are negative, which indicates that simple bag-of-chords models are not suitable for the music similarity task
-
Algebraic Bayesian network (ABN) tertiary structure is required to both a random minimal join graph and the minimal join graph set. In addition, it is required to find the best or an optimal secondary structure over the given ABN primary structure. The goal of the work is to create a clear definition of the ABN tertiary structure and associated objects on the basis of analysis of existing approaches and study of their properties. All existing approaches to the definition of "clique", "clique set" and "clique graph", and classification of the maximal join graph cliques are overviewed. A unified vocabulary for describing the associated objects satisfying the criteria of non-redundancy and systematization completeness is suggested. Tertiary polystructure is defined as a family of graphs constructed on subsets of the maximum join graph narrowings set whose edges are matched to specific relationships defined in the article. Tertiary structure is defined as a directed graph whose edges lead from the parent vertices to their sons, and whose vertices are the maximum join graph narrowing on weights of the edges and the vertices, as well as on the empty weight (parent graph over extended set of useful cliques).
-
The paper presents algorithmical complexity estimates for local posteriori inference in algebraic Bayesian networks. We consider the ways of implementing the inference for three types of evidence (deterministic, stochastic, and imprecise). If we need to solve linear programming tasks for inference, the comlexity estimations are given in numbers of such tasks and numbers of variables and constraints in each task. In other cases, complexity estimates are given in numbers of arithmetic operations.
-
The aim of the paper is construction of calibration relations in the case of class of coordinate non-polynomial splines connected with refinement of grids. An embed\-ding of spline spaces is established for arbitrary refinement of grids. The reconstruction matrixes in the case of a grid on an open interval and a grid on a segment are constructed. The system of biorthogonal linear functionals to splines is constructed. The decomposition matrixes in the case of a grid on an open interval and a grid on a segment are constructed.
-
The role of algebraic Bayesian network (ABN) polystructure has increased significantly. It had been originally introduced as an auxiliary object for the secondary structure synthesis, but then the tertiary polystructure has found its use in the analysis of secondary structure cyclicity without its direct synthesis. Now the tertiary polystructure is expected to be used for global inference in ABN. The goal of the work is the selection (and subsequent systematization and complicity estimation) the existing algorithms for tertiary polystructure elements synthesis. The existing algorithms for tertiary polystructure elements synthesis are overviewed and the algorithm complicity is estimated in the paper. Four algorithms for synthesizing the empty graph over useful cliques subsets and two algorithms for synthesizing the parent graph over a stereoclique set are presented.
-
In this paper, we present theoretical and practical suggestions for the formation of industrial enterprises on intellectual property management systems, application of which will enhance the creation and use of intellectual property and commercial information. The results of research and development can also help to identify and formulate the primary event for automation and management of intellectual property to justify a preliminary image of automated control systems of intellectual property.
-
The approach is based on using of the known situation-event formalism of an interacting hybrid processes specification. A short description of the formalism is set out. Some advantages of its using for dynamic systems computer implementation are pointed out and its abilities for processes coordination are discussed. Hybrid processes coordination methods based on it and peculiarities of their usage are reviewed. Instances of automatic coordination systems which illustrate some methods usage are given.
-
The problem of innovation activity planning is considered which can result in manufacture modernization. Definitions of a novelty, an innovation, innovative activity are suggested. Indicators for innovation activity quality assessment are justified. The plan of innovation activity, concept of system innovation capability are defined; statement of the problem of innovation activity planning is realized. It is offered to solve this problem, as a mathematical optimization problem. System of models is developed. It allows to obtain recurrent formulas for calculation of objective function values, as well as to recalculate these values once the plan of innovation activity has been changed. The method of fragmentary controlled stochastic search is offered on the base of features of developed models. Algorithms of effects characteristics recalculation for the problem decision are described. The procedure of data acquisition, data preparation and problem solving results interpretation is considered.
-
In this work modern mechanisms defining complexity of management in modern social systems (in the private and state enterprises, hi-tech Programs, structures of the state management-regulation of economic processes) are analyzed. It is shown that the principal difficulty of modern complexity of management consists in management of not completely formalized technologies of activity of social systems of a great number. Modern feature of management in difficult social systems is an essential influence of technologies of the market which aren't regulated by norms and institutes, and also essential influence of natural restrictions of cogitative possibilities of the person to operate-manage. Influence of poorly regulated technologies in the market can be reduced by use of network, organizational, collective, informational and other developed technologies of maintenance of management and by use of methods integrating science. And reduction of influence of mental restrictions demands creation of new cognitive technologies of management which allow to divide functions at the mental level.
