Informatics and Applications scientific journal
Volume 10, Issue 1, 2016
Abstract: The goal of this survey is to analyze the global trends of development of massive data collections and related infrastructures in the world aimed at the evaluation of the opportunities for the shared usage of such collections during research, decision making, and problem solving in various data intensive domains (DIDs) in Russia. The representative set of DIDs selected for the survey includes astronomy, genomics and proteomics, neuroscience (human brain investigation), materials science, and Earth sciences. For each of such DIDs, the strategic initiatives (or large projects) in the USA and Europe aimed at creation of big data collections and the respective infrastructures planned up to 2025 are briefly overviewed. The information technology projects aimed at the development of the infrastructures supporting access to and analysis of such data collections are also briefly overviewed. The set of large data collections included into the survey and expected to be created soon is planned to be used as a reference point for the design and development of the research infrastructures for data management and analysis making them compatible with the foreign open research infrastructures. In particular, the data collections considered in the survey, the goals of their creation and the researches planned to be accomplished based on them make it possible to proceed to the design and implementation of the advanced components of the research infrastructures, such as, for example, conceptualization facilities of the application domains to be investigated in data intensive research, respective metamodels, components intended for data reuse and reproducing of programs and workflows, etc.
Keywords: fourth paradigm; data intensive domains; research infrastructures; data collections; big data
Abstract: The paper considers an approach to solving the problem of co-lending systemic risk analysis over heterogeneous data collections in a combined virtual and materialized integration environment. The problem belongs to the data-intensive domain of financial macromodeling. Virtual integration is implemented using the subject mediation technology. Materialized integration is implemented using the Hadoop open-source software framework for distributed storage and processing of large datasets accompanied by the Hive system intended for relational warehousing over Hadoop.
Keywords: co-lending systemic risk; problem solving; data integration; heterogeneous data collections
Abstract: The authors developed the synthesis theory of suboptimal filers (SOF) based on normal approximation method (NAM), statistical linearization method (SLM), orthogonal expansions method (OEM), and quasi-moment method (QMM) for nonlinear differential stochastic systems on manifolds (MStS) with Wiener and Poisson noises.
Keywords: a posteriori one-dimensional distribution; coefficient of orthogonal expansion; first sensitivity function; normal approximation method; normal suboptimal filter; orthogonal expansion method; orthogonal suboptimal filter; quasi-moment method; quasi-moment; statistical linearization method; stochastic system on manifolds; suboptimal filter; Wiener white noise
ANALYTICAL MODELING OF DISTRIBUTIONS IN STOCHASTIC SYSTEMS ON MANIFOLDS BASED ON ELLIPSOIDAL APPROXIMATION.
Abstract: Accuracy and sensitivity problems for algorithms of structural analytical modeling of one- and multidimensional distributions based on the method of ellipsoidal approximation (MEA) and the method of ellipsoidal linearization (MEL) are considered. General algorithms of ellipsoidal stochastic analysis in nonlinear stochastic systems on manifolds (MStS) with Wiener and Poisson noises are developed. Special attention is paid to MStS with additive noises. Accuracy and sensitivity equations are presented. For two-dimensional nonlinear circular MStS, accuracy and sensitivity equations are derived. Equations make it possible to calculate probability moments up to the fourth order. Algorithms based on orthogonal expansion of one-dimensional density are compared with algorithms based on MEA (MEL). Some generalizations are given.
Keywords: accuracy equations; analytical modeling; method of ellipsoidal linearization (MEL); method of ellipsoidal approximation (MEA); sensitivity equations; stochastic system on manifold (MStS)
Abstract: An approach to reduce costs of large-scale software-intensive systems design due to applying modern metaprogramming technologies is proposed. Model-driven engineering and aspect-oriented software development are considered to be the most advanced among such technologies. The methods to scale these technologies are presented in order to apply them efficiently under growth of the target system size via closure with regard to basic structural relations. Design of mathematical software for smart electric grids is considered as a case study for practical applications of the approach. Principles of mathematical device for constructing, analysis, and optimization of design technological procedures based on the category theory are described. The process to design the generator of computational software components of large-scale systems applying category-theoretical methods is drawn.
Keywords: large-scale software-intensive systems; metaprogramming; megamodel; category theory; colimit; model driven engineering; aspect-oriented software development; smart grid
Abstract: This work is the latest in a series of articles devoted to the study of Bayesian queueing and reliability models.
Keywords: Bayesian approach; mass service theory; reliability theory; mixed distributions; distributions with compact support
Abstract: Information flows analysis based on various probabilistic models is widely used in various applied fields.
Keywords: probability mixtures; moving separation of mixtures; data mining; online software; matrix computing
DEVELOPMENT OF THE ALGORITHM OF NUMERICAL SOLUTION OF THE OPTIMAL INVESTMENT CONTROL PROBLEM IN THE CLOSED DYNAMICAL MODEL OF THREE-SECTOR ECONOMY.
Abstract: The paper develops the numerical method of solution of the optimal investment control problem in the closed dynamical model of three-sector economy. The preceding papers described an analytical research of this problem by the method based on the Pontryagin maximum principle. In the present paper, the authors obtained analytical representations for state functions. Conjugate variables are used as the foundation of the numerical algorithm. The developed algorithm makes it possible to analyze the class of admissible control functions, having not more than the given finite number of points of switch, and to find among them those that satisfy the necessary optimality conditions and restrictions of the original task. The general scheme of the proposed algorithm can be used to investigate another optimal control tasks, connected with different subject areas. The developed algorithm is realized in a system of applied programs.
Keywords: model of three-sector economy; Pontryagin maximum principle; numerical method of solution of the optimal control problem
Abstract: The problematic of interdisciplinary tools is considered and the conclusion about the relevance of research of the "grain" property of hybrids in informatics is made. Properties of functional and instrumental heterogeneity of complex tasks are investigated and the results of fine-grained hybrids modeling within the theory of the schemes of role conceptual models are presented. The results are presented within the linguistic approach, the core of which is in transformation of the verbalized information about objects-originals (complex subjects) and objects-prototypes (modeling approaches) to objects-results (functional hybrid intelligent systems). It exists in poly-languages of professional activity. The transformation is directed by heuristics which are the schemes of the conceptual role models in the informal axiomatic theory. The categorical core of the theory is "resource- property-operation-relation." The notion of bidirectional hybridization, its benefits, and the first results are represented.
Keywords: logical-mathematical intelligence; hybrid intelligent systems; linguistic approach; theory of role conceptual models; fine-grained hybrids; bidirectional hybridization
Abstract: The article considers "supracorpora databases," which are used in contrastive linguistic studies. Such databases result from processing of parallel texts from bilingual parallel subcorpora within the Russian National Corpus. Each of these parallel texts contains either one original Russian text with one or more translations into a foreign language, or one original text in a foreign language with one translation into Russian. Every source text is aligned with its translation(s) at the level of sentences. Supracorpora databases are a new type of linguistic resources designed for goal-oriented discovery of new knowledge about various linguistic units. This knowledge is needed to improve the quality of machine translation, to update monolingual and bilingual grammars, and to modernize a wide range of academic courses in such fields as linguistics and translation studies. The article describes the underlying conceptual foundations of the database and gives an example of how it can be implemented to represent knowledge about Russian connectors and their French translation correspondences.
Keywords: cross-lingual studies; Russian connectors; representation of knowledge about connectors; supracorpora databases
Abstract: BioNLP is an emerging area of NLP that brings new challenging objects for language processing and new valuable resources for bioinformatics and medicine. One notable task in BioNLP is creating de-novo ontologies.
Keywords: BioNLP; ontology creation; context-free grammar
Abstract: The word 'information' has been used in many senses and its related concepts have been defined in different ways. One of the senses in which the word is used relates to a concept which is considered one of the main properties of matter. The definition of this conception of information supports the expression of concepts such as Complexity and Self-Organization. In this paper, Complexity and Self-Organization concepts are applied to systems at the macro- and microlevels. Their similarities and differences are analyzed and information content is considered. The regularities of Complexity and Self-Organization are applied to petroleum as a complex natural thermodynamic system. Petroleum reflects all of the main and widely understood features of Complexity and Self-Organization but demonstrates additional properties which were not considered earlier. Complexity and Self-Organization can help to deepen our understanding of the origin of hydrocarbon molecules, their age, and behavior in the process of petroleum generation in general.
Keywords: complexity; complexity properties; complex system; self-organization; artificial complexity; natural complexity; petroleum origin; hydrocarbon molecule complexity; petroleum information content
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