Труды сотрудников ИВМ СО РАН

[Text]. - Electronic text data (125 Кб)
. - Режим доступа: http://icm.krasn.ru/refextra.php?id=1269. - Электрон. версия печ. публикации . - Режим доступа: http://library.krasn.ru/trudy/1999/1269gorban_IJCNN99Know.pdf (Полный текст) : статья / A.N. Gorban, Ye.M. Mirkes, V.G. Tsaregorodtsev. - Electronic text data (125 Кб) // Proceedings of International Joint Conference on Neural Networks. - Washington, 1999. - p. 436-441

ГРНТИ

50.07.03

Аннотация: This paper presents a generalized technology of extraction of explicit knowledge from data. The main ideas are 1) maximal reduction of network complexity (not only removal of neurons or synapses, but removal all the unnecessary elements and signals and reduction of the complexity of elements), 2) using of adjustable and flexible pruning process (the pruning sequence shouldn't be predetermined - the user should have a possibility to prune network on his own way in order to achieve a desired network structure for the purpose of extraction of rules of desired type and form), and 3) extraction of rules not in predetermined but any desired form. Some considerations and notes about network architecture and training process and applicability of currently developed pruning techniques and rule extraction algorithms are discussed. This technology, being developed by us for more than 10 years, allowed us to create dozens of knowledge-based expert systems.

http://icm.krasn.ru/refextra.php?id=1269,
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Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Mirkes, Ye.M.; Миркес Е.М.; Tsaregorodtsev, V.G.; Царегородцев, Виктор Геннадьевич; Горбань, Александр Николаевич

[Text] / B.Harris [et al.] // Ann. Geophys. - 2013. - Vol. 31, Is. 10. - P1779-1789, DOI 10.5194/angeo-31-1779-2013. - Cited References: 26. - Work at UNH is supported by NASA Grants NNX10AQ29G and NNX13AP39G. N. V. Erkaev is supported by grant No. 12-05-00152-a from the Russian Foundation of Basic Research. . - ISSN 0992-7689РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: Acceleration of magnetosheath plasma resulting from the draping of the interplanetary magnetic field (IMF) around the magnetosphere can give rise to flow speeds that exceed that of the solar wind (V-SW) by up to similar to 60%. Three case event studies out of 34 identified events are described. We then present a statistical study of draping-related accelerations in the magnetosheath. Further, we compare the results with the recent theory of Erkaev et al. (2011, 2012). We present a methodology to help distinguish draping-related accelerations from those caused by magnetic reconnection. To rule out magnetopause reconnection at low latitudes, we focus mainly on the positive B-z phase during the passage of interplanetary coronal mass ejections (ICMEs), as tabulated in Richardson and Cane (2010) for 1997-2009, and adding other events from 2010. To avoid effects of high-latitude reconnection poleward of the cusp, we also consider spacecraft observations made at low magnetic latitudes. We study the effect of upstream Alfven Mach number (M-A) and magnetic local time (MLT) on the speed ratio V/V-SW. The comparison with theory is good. Namely, (i) flow speed ratios above unity occur behind the dawn-dusk terminator, (ii) those below unity occur on the dayside magnetosheath, and (iii) there is a good general agreement in the dependence of the V ratio on M-A.


Доп.точки доступа:
Harris, B.; Farrugia, C.J.; Erkaev, N.V.; Еркаев, Николай Васильевич; Torbert, R.B.; NASA [NNX10AQ29G, NNX13AP39G]; Russian Foundation of Basic Research [12-05-00152-a]

/ A.N. Gorban, T.G. Popova, M.G. Sadovsky // Open Systems and Information Dynamics. - 2000. - Vol. 7, Is. 1. - P1-17 . - ISSN 1230-1612
Аннотация: The classifications of bacterial 16S RNA sequences developed over the real and transformed frequency dictionaries have been studied. Two sequences are considered to be close, when their frequency dictionaries are close in Euclidean metrics. A procedure to transform a dictionary is proposed that makes clear some features of the information pattern of a symbol sequence. A comparative study of classifications developed over real frequency dictionaries vs. the transformed ones has been carried out. A correlation between information patterns of nucleotide sequences and taxonomy of the bearer of the sequence was found. The sites with high information value are found to be the main factors of the difference between the classes in a classification. The classification of nucleotide sequences developed over real frequency dictionaries of thickness 3 reveals the best correlation to a gender of bacteria. A set of sequences of the same gender is included entirely into one class, as a rule, and exclusions occur rarely. A hierarchical classification yields one or two taxonomy groups on each level of classification. An unexpectedly often, or unexpectedly rare occurrence of some sites within a sequence makes a basic difference between the structure patterns of the classes yielded; a number of those sites is not to large. Further investigations are necessary in order to campare the sites revealed with those determined due to other methodology.

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Полный текст


Доп.точки доступа:
Gorban, A.N.; Горбань, Александр Николаевич; Popova, T.G.; Попова Т.Г.; Sadovsky, M.G.; Садовский, Михаил Георгиевич

[Текст] : статья / M. G. Sadovsky, M. Yu. Senashova // Journal of Siberian Federal University. Mathematics & Physics = Журнал Сибирского федерального университета. Математика и физика. - 2013. - Т. 6, № 1. - С. 105-113
   Перевод заглавия: Локальная информированность может приводить к хаотической миграции
Аннотация: A novel model of the targeted migration of a population separated into two subpopulations is proposed. The model is implemented for the local information access. Migration is not random and yields the maximization of a net reproduction, in general; specific version of this general rule is proposed. The local information access means the total lack of knowledge on the environmental conditions and transfer cost at the immigration station, for beings occupying the given station. Various regimes for the models are studied. A reciprocal chaotic-like migrations may take place, for some reasonable parameters figures.

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Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Senashova, M.Yu.; Сенашова, Мария Юрьевна; Садовский, Михаил Георгиевич

/ A. V. Lapko, V. A. Lapko // 2015 International Siberian Conference on Control and Communications, SIBCON 2015 - Proceedings. - 2015. - 2015 International Siberian Conference on Control and Communications, SIBCON 2015 (21 May 2015 through 23 May 2015, ) Conference code: 113590, DOI 10.1109/SIBCON.2015.7147119 . -
Аннотация: A technique for the construction of confidence limits for the multi-dimensional probability density function is proposed and its efficiency as a function of the probabilistic characteristics of the procedure of decomposition of the domain of variation of the random variable is investigated. © 2015 IEEE.

Scopus

Держатели документа:
Siberian Branch of the Russian Academy of Sciences, Institute of Computer Modelling, Krasnoyarsk, Russian Federation
Ministry of Education and Science of the Russian Federation, Siberian State Aerospace University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Lapko, V.A.; Лапко, Василий Александрович; Лапко, Александр Васильевич

/ A. V. Lapko, V. A. Lapko // Measurement Techniques. - 2015, DOI 10.1007/s11018-015-0741-z . - ISSN 0543-1972
Аннотация: A method is proposed for comparing the efficiencies of procedures for sampling the range of values of a random quantity when estimating the probability density. The criterion of efficiency is taken to be an asymptotic expression for the mean square deviation of a regression fit for the probability density. © 2015 Springer Science+Business Media New York

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WOS

Держатели документа:
Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Lapko, V. A.; Лапко, Василий Александрович; Лапко, Александр Васильевич

/ A. V. Lapko, V. A. Lapko // Optoelectron. Instrum. Data Proces. - 2015. - Vol. 51, Is. 4. - P372-377, DOI 10.3103/S875669901504007X . - ISSN 8756-6990
Аннотация: A nonparametric estimate of the decision function in a two-alternative problem of pattern recognition is considered. The principle of expansion of the learning sample and the analysis of the probabilistic characteristics of the obtained sets of random variables are used to synthesize this estimate. On this basis, a technique of construction of confidence boundaries for the Bayesian equation of the separating surface is derived. The efficiency of this technique is proved by results of computational experiments. © 2015, Allerton Press, Inc.

Scopus

Держатели документа:
Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, building 44, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, pr. im. Gazety “Krasnoyarskii rabochii” 31, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Lapko, V. A.; Лапко, Василий Александрович; Лапко, Александр Васильевич

[Текст] : статья / А. В. Лапко, В. А. Лапко // Автометрия. - 2015. - Т. 51, № 4. - С. 62-67 . - ISSN 0320-7102
   Перевод заглавия: CONSTRUCTION OF CONFIDENCE BOUNDARIES FOR THE DECISION FUNCTION IN A TWO-ALTERNATIVE PROBLEM OF PATTERN RECOGNITION

УДК

519.7

Аннотация: Рассматривается непараметрическая оценка решающей функции в двуальтернативной задаче распознавания образов. При её синтезе используются принцип декомпозиции обучающей выборки и анализ вероятностных характеристик получаемых множеств случайных величин. На этой основе разработана методика построения доверительных границ для байесовского уравнения разделяющей поверхности. Эффективность методики подтверждается результатами вычислительных экспериментов.
A nonparametric estimate of the decision function in a two-alternative problem of pattern recognition is considered. The principle of expansion of the learning sample and the analysis of the probabilistic characteristics of the obtained sets of random variables are used to synthesize this estimate. On this basis, a technique of construction of confidence boundaries for the Bayesian equation of the separating surface is derived. The efficiency of this technique is proved by results of computational experiments.

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН
Сибирский государственный аэрокосмический университет им. академика М. Ф. Решетнёва

Доп.точки доступа:
Лапко, Василий Александрович; Lapko V.A.; Lapko A.V.

[Текст] : статья / А. В. Лапко, В. А. Лапко // Измерительная техника. - 2015. - № 5. - С. 10-14 . - ISSN 0368-1025

УДК

519.24

Аннотация: Предложена методика сравнения эффективности процедур дискретизации интервала значений случайной величины при оценивании плотности вероятности. В качестве критерия эффективности использовано асимптотическое выражение среднеквадратического отклонения регрессионной оценки плотности вероятности.
The comparison procedure for the effectiveness of methods for discretization of the interval of values of a random variable at probability density estimation has been saggested. As an efficiency criterion the asymptotic expression of standard deviation of regression model of probability density has been used.

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН
Сибирский государственный аэрокосмический университет им. акад. М. Ф. Решетнева

Доп.точки доступа:
Лапко, Василий Александрович; Lapko V.A.; Lapko A.V.

[Text] : доклад, тезисы доклада / A. V. Lapko, V. A. Lapko // International Siberian Conference on Control and Communications (SIBCON) (MAY 21-23, 2015, Omsk, RUSSIA) : IEEE, 2015. - Cited References:9 . - ISBN 978-1-4799-7103-9
Аннотация: A technique for the construction of confidence limits for the multi-dimensional probability density function is proposed and its efficiency as a function of the probabilistic characteristics of the procedure of decomposition of the domain of variation of the random variable is investigated.

WOS

Держатели документа:
Russian Acad Sci, Inst Comp Modelling, Siberian Branch, Krasnoyarsk, Russia.
Siberian State Aerosp Univ, Minist Educ & Sci Russian Federat, Krasnoyarsk, Russia.

Доп.точки доступа:
Lapko, Alexandr V.; Lapko, Vasily A.

[Text] / A. V. Lapko, V. A. Lapko // Meas. Tech. - 2016. - Vol. 59, Is. 6. - P571-576, DOI 10.1007/s11018-016-1010-5. - Cited References:8. - This work was carried out within the framework of the project part of State Assignment of Ministry of Education and Science of Russia (No. 2.914.2014/K). . - ISSN 0543-1972. - ISSN 1573-8906РУБ Engineering, Multidisciplinary + Instruments & Instrumentation

Аннотация: A nonparametric estimate for the probability density is proposed with better approximation properties than the traditional Rosenblatt-Parzen statistics. The dependences of its properties on the form of the kernel function and on the formulas for the sampling interval for the random quantity are discussed.

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Держатели документа:
Russian Acad Sci, Inst Computat Modelling, Siberian Branch, Krasnoyarsk, Russia.
Siberian State Aerosp Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Lapko, A. V.; Lapko, V. A.; State Assignment of Ministry of Education and Science of Russia [2.914.2014/K]

[Текст] : статья / А. Н. Рогалев // Вестник Сибирского государственного аэрокосмического университета им. академика М.Ф. Решетнева. - 2016. - Т. 17, № 2. - С. 350-358 . - ISSN 1816-9724
   Перевод заглавия: APPLICATION OF SENSITIVE FUNCTIONS, WHICH USED TO COMPUTE TUBES INCLUDING THE TRAJECTORIES OF CONTROL SYSTEMS

УДК

517.977.1

Аннотация: Рассматриваются вопросы применения функций чувствительности для вычисления границ включений множеств достижимости управляемых систем в задачах оценки предельных отклонений летательных аппаратов: самолета, ракеты, космического корабля. Как правило, в рамках теории чувствительности проводится численное исследование параметрической модели управляемой системы во всем диапазоне изменения определяющей совокупности параметров. Практическое применение такого подхода очень часто оказывалось нецелесообразным или невозможным из-за огромного количества требуемых вычислений и необозримости получаемых результатов. Предложенное и реализованное в статье совместное применение функций чувствительности и символьных формул решений позволяет эффективно вычислять включения множеств достижимости - совокупностей концов всех траекторий управляемой системы, начинающихся в начальный момент времени в точках начального множества. Эти множества применяются в задачах гарантированного оценивания совокупностей отклонений летательных аппаратов и задачах контроля предельных отклонений, при этом действующие на систему внешние возмущения и ошибки наблюдения заключены в определенных пределах (стеснены ограничениями). Под функциями чувствительности понимаются производные различных переменных состояния и показателей качества по параметрам соответствующей и определяющей группы. Эти функции являются решениями уравнений чувствительности, которые могут быть непосредственно получены из известной параметрической модели системы. Описанный в статье метод, использующий символьные формулы решения и функции чувствительности, позволяет получить надежную оценку множеств достижимости управляемых систем в условиях неопределенности, если в правые части этих систем управляющие воздействия входят произвольным образом, не только как аддитивный член. Область применения этого метода включает задачи оценки предельных отклонений при движении самолета на этапе автоматического захода на посадку, задачи определения возможности потери устойчивости движения летательного аппарата на заданном интервале времени, т. е. задачи траекторной безопасности летательного аппарата, задачи посадки вертолета. Упрощенным критерием потери устойчивости в подобных задачах служит вычисление некоторого порогового или критического значения одного из параметров движения и оценки границ областей всех возможных траекторий. Представлены результаты применения численных методов, основанных на символьных формулах решений и функциях чувствительности и оценивании всех возможных ее значений.
This article presented the use of sensitivity functions to compute the boundaries of inclusions of control systems reachability sets and their application to problems of estimation tolerances of aircraft motion, or missiles motion, or spacecraft motion. As a rule, the model of the control system is carried out throughout the range of the defining set of parameters in the framework of the sensitivity of numerical investigation of the parametric. The practical application of this approach is very often impractical or impossible because of the huge number of required computations and countless of the results. The combined use of the sensitivity functions and the analytical formulas of solutions proposed and implemented in the article, can effectively compute the inclusion of reachable sets. These sets include all trajectories of the control system, starting at the initial time point in the initial set. The inclusion of reachable sets are used in problems of guaranteed estimation of variance sets aircraft and in problems of control tolerances, considering that the current external disturbances of system and errors of observation are enclosed within certain limits (constrained by limitations). Defined sensitivity functions are derivatives of various state variables with respect the parameters of the appropriate group. Obtained these functions are solutions of the sensitivity equations constructed directly from a known parametric model of the system. Using the method, based on symbolical formulas for the solution and based on sensitivity function, allows getting a reliable estimate of reachable sets of control systems in conditions of uncertainty. Control actions are included on the right side of these systems arbitrarily, not only as an additive term. Application of this method involves the problem of estimating the maximum deviations of the aircraft motion at the stage of the automatic approach, the problem of determining the possibility of loss of stability of the aircraft motion at a given time, that is the problem of safety of the aircraft trajectory, the problem of the helicopter landing. Simplified criteria for buckling in such problems are the computation of a threshold or critical value of one of the motion parameters, and evaluation of the boundaries of all possible trajectories. The article presents the results of numerical methods based on the use of analytical formulas and sensitivity functions and evaluating all its possible values (reachable sets of control systems).

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Rogalev A.N.

[Текст] : статья / А. В. ЛАПКО, В. А. ЛАПКО // Измерительная техника. - 2016. - № 6. - С. 14-17 . - ISSN 0368-1025

УДК

519.7

Аннотация: Предложена непараметрическая оценка плотности вероятности, имеющая повышенные аппроксимационные свойства по сравнению с традиционной статистикой типа Розенблатта-Парзена. Исследована зависимость её свойств от вида ядерных функций и формул дискретизации интервала значений случайной величины.
Proposed nonparametric probability density estimate having improved approximation properties compared to the traditional statistics such as Rosenblatt - Parzen. The dependence of its properties on the type of kernel functions and formulas sampling interval of values of the random variable.

РИНЦ

Держатели документа:
Сибирский государственный аэрокосмический университет им. акад. М. Ф. Решетнева

Доп.точки доступа:
Лапко, Василий Александрович; Lapko V.A.; Lapko A.V.

[Текст] : статья / А. В. Лапко, В. А. Лапко // Информатика и системы управления. - 2016. - № 3. - С. 78-85, DOI 10.22250/isu.2016.49.78-85 . - ISSN 1814-2400
   Перевод заглавия: PERFORMANCE ANALYSIS OF DISCRETIZATION TECHNIQUES OF TWO-DIMENSIONAL FIELD OF VALUES OF A RANDOM VARIABLE IN THE SYNTHESIS OF A NONPARAMETRIC ESTIMATE OF PROBABILITY DENSITY

УДК

519.7

Аннотация: Проводится сравнение оптимального и эвристических методов дискретизации области значений двумерной случайной величины. Определяются условиях их компетенции при восстановлении нормального закона распределения двух независимых случайных величин. Эффективность методики подтверждается результатами вычислительных экспериментов.
The paper gives wide coverage to comparison of optimal and heuristic discretization techniques of two-dimensional field of values of a random variable. It defines the terms of their competency under restoration of normal law of distribution of two independent random variables. The efficiency of the method is confirmed by the results of computational experiments.

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН
Сибирский государственный аэрокосмический университет им. академика М.Ф. Решетнева

Доп.точки доступа:
Лапко, Василий Александрович; Lapko V.A.; Lapko A.V.

/ V. Shaydurov, A. Vyatkin, E. Kuchunova // (15 June 2016 through 22 June 2016 : Springer Verlag, 2017. - Vol. 10187 LNCS. - P599-607, DOI 10.1007/978-3-319-57099-0_68 . -
Аннотация: We develop a semi-Lagrangian algorithm for solving the three-dimensional advection problem. A numerical solution is determined on a uniform cubic grid as a piecewise trilinear function. The method is based on the integral balance equation between two neighboring time levels. The domain of integration at the previous time level is a curved cuboid. To compute an integral over this domain numerically, we approximate this cuboid by another one with the same 8 vertices. The latter cuboid is obtained by a trilinear (isoparametric) transformation of the unit cube. This leads to the integration over the unit cube with the help of the composite midpoint rule. Such a technique provides the validity of the local balance equation and does not involve computational and algorithmic complexity for solving the three-dimensional problem. The numerical experiments confirm the first-order convergence. © Springer International Publishing AG 2017.

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Держатели документа:
Institute of Computational Modelling of SB RAS, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny pr, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vyatkin, A.V.; Вяткин, Александр Владимирович; Kuchunova, E.; Шайдуров, Владимир Викторович

[Text] / A. V. Lapko, V. A. Lapko // Meas. Tech. - 2017. - Vol. 60, Is. 4. - P325-330, DOI 10.1007/s11018-017-1196-1. - Cited References:9. - This work was conducted within the design section of State Assignment of the Ministry of Education and Science of Russia No. 2.914.2014/K and the Program of the Siberian Branch of the Russian Academy of Sciences IV.35.1. . - ISSN 0543-1972. - ISSN 1573-8906РУБ Engineering, Multidisciplinary + Instruments & Instrumentation

Аннотация: Optimal and heuristic methods of digitizing the range of values of a two-dimensional random variable are compared. Conditions of the scope of these methods are defined in re-establishing the normal law of distribution of two dependent random variables. Results of computational tests are examined.

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Держатели документа:
RAS, SB, ICM, Krasnoyarsk, Russia.
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Lapko, A. V.; Lapko, V. A.; Program of the Siberian Branch of the Russian Academy of Sciences [IV.35.1]

/ A. V. Lapko, V. A. Lapko, E. A. Yuronen // 2017 International Siberian Conference on Control and Communications, SIBCON 2017 - Proceedings. - 2017. - 2017 International Siberian Conference on Control and Communications, SIBCON 2017 (29 June 2017 through 30 June 2017, ) Conference code: 129746, DOI 10.1109/SIBCON.2017.7998533 . -
Аннотация: Optimum and heuristic sampling methods of a range of values of a two-dimensional random value are investigated. Conditions of their competence at recovery of the normal distribution law of two independent random values are defined. © 2017 IEEE.

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Держатели документа:
Institute of Computer Modelling SB RAS, Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Lapko, A. V.; Lapko, V. A.; Yuronen, E. A.

/ Y. Grebnev, M. Sadovskiy ; ed. O. G. Berestneva [et al.] // PROCEEDINGS OF THE IV INTERNATIONAL RESEARCH CONFERENCE INFORMATION : ATLANTIS PRESS, 2017. - Vol. 72: 4th International Scientific Research Conference on Information (DEC 05-08, 2017, Tomsk, RUSSIA). - P368-370. - (ACSR-Advances in Comptuer Science Research), DOI 10.2991/itsmssm-17.2017.76. - Cited References:4 . -
Аннотация: Some preliminary results are provided towards the study of the violation of genomic super-symmetry; that latter is the so called Second Chargaff's rule. The rule stipulates that oligonucleotides that could be read equally in opposite directions with respect to the symbol change according to the complimentary law (complimentary palindromes) should exhibit pretty close frequency. We have checked the genomes of organisms of various taxa ranging from viruses via bacteria, yeasts, animals, plants, etc.; more than 1500 genetic sequences had been studied, totally. The measure for the second rule violation was calculated for a single strand. Both intragenomic, and intergenomic studies have been carried out. It was found that intragenomic variability decays, as the length of string grows up. The intergenomic variability is comparable to the intragenomic one, for considerably short strings.

WOS

Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Krasnoyarsk, Russia.

Доп.точки доступа:
Grebnev, Yaroslav; Sadovskiy, Michail; Berestneva, O.G. \ed.\; Tikhomirov, A.A. \ed.\; Trufanov, A.I. \ed.\; Kataev, M.Y. \ed.\

[Текст] : доклад, тезисы доклада / Я. В. Гребнев, М. Г. Садовский // Информационные технологии в науке, управлении, социальной сфере и медицине : сборник научных трудов IV Международной конференции: в 2 частях. - Томск : Национальный исследовательский Томский политехнический университет, 2017. - Часть 1. - С. 60-62
Аннотация: Some preliminary results are provided towards the study of the violation of genomic super-symmetry; that latter is the so called Second Chargaff's rule. The rule stipulates that oligonucleotides that could be read equally in opposite directions with respect to the symbol change according to the complimentary law (complimentary palindromes) should exhibit pretty close frequency. We have checked the genomes of organisms of various taxa ranging from viruses via bacteria, yeasts, animals, plants, etc.; more than 1500 genetic sequences had been studied, totally. The measure for the second rule violation was calculated for a single strand. Both intragenomic, and intergenomic studies have been carried out. It was found that intragenomic variability decays, as the length of string grows up. The intergenomic variability is comparable to the intragenomic one, for considerably short strings.

РИНЦ,
Источник статьи

Держатели документа:
Институт вычислительного моделирования Сибирского отделения Российской академии наук
Сибирский федеральный университет

Доп.точки доступа:
Гребнев, Я.В.; Садовский, М.Г.; ИНФОРМАЦИОННЫЕ ТЕХНОЛОГИИ В НАУКЕ, УПРАВЛЕНИИ, СОЦИАЛЬНОЙ СФЕРЕ И МЕДИЦИНЕ(2017 ; 05.12 - 08.12 ; Томск)
Нет сведений об экземплярах (Источник в БД не найден)

: статья / А. В. Лапко, В. А. Лапко // Измерительная техника. - 2018. - № 5. - С. 9-13 . - ISSN 0368-1025

УДК

519.24

Аннотация: Рассмотрены методы оценивания параметров формулы оптимальной дискретизации области определения плотности вероятности двумерной случайной величины. Исследованы свойства свойства предложенных методов и определены условия их компетентности.
Methods for estimating the parameters of the formula for the optimal discretization of the range of variation in the probability density of a two-dimensional random variable are considered. The properties of the proposed methods are investigated and the conditions for their competence are defined.

РИНЦ

Держатели документа:
Институт вычислительного моделирования Сибирского отделения РАН
Сибирский государственный университет науки и технологий им. акад. М.Ф. Решетнева

Доп.точки доступа:
Лапко, А.В.; Лапко, В.А.