檢索結果 - "objective function"

Introduction. Random deviations of the antenna phase centre of a synthetic aperture radar (SAR) are a source of phase errors for the received signal. These phase errors frequently cause blurring of the radar image. The image quality can be improved using various autofocus algorithms. Such algorithms...

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The article discusses the dynamic programming algorithm developed by R. Bellman, based on the search for the optimal trajectory connecting the nodes of a predefined regular grid of states. Possibilities are analyzed for a sharp increase in the effectiveness of using dynamic programming in solving ap...

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Economic-mathematical models of forming enterprise production program with single-product taking into account free store capacity, average labor of product, market demand and other basic resources realized at the expense of own means were elaborated, which differ in forming of set tasks solutions by...

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Objectives. The aim of the work is to develop the theory of spline-approximation of a sequence of points on a plane for using compound splines with a complex structure. In contrast to a simple spline (e.g., polynomial), a compound spline contains repeating bundles of several elements. Such problems...

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The article is devoted to the study of ways to optimize the mathematical model of the structure of the educational process. Formalization of the structure of the educational process was carried out in the form of setting an objective function, including the sum of the number of hours provided by the...

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Parallel algorithm searching the maximum of the objective function using CUDA technology based on the modified method of dynamic programming is presented. Describes the features of parallel software implementations of the algorithm, which allows to reduce by several orders of magnitude the number of...

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In the proposed work, the engineering method of modeling and optimization will be described using the example of tire development and rubber products. A new kind of objective function is proposed that allows to determine almost completely optimal technological process parameters (including propertie...

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In the article, computer design of routes of linear structures is considered as a spline approximation problem. A fundamental feature of the corresponding design tasks is that the plan and longitudinal profile of the route consist of elements of a given type. Depending on the type of linear structur...

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Under study are two approaches to creating computer programs for computer-aided design of linear structures trails. The first approach, which realised in the existing CAD of linear structures, is not focused on the optimization of the design decisions, as the computer in these systems is used only f...

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The article continues studying the problem of the calculus of variations that occurs in line structures routing, in particular, roads. The task is to find a line that satisfies all technical constraints and gives a minimum of a given functional, for example, construction costs. The unknown extremal...

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Introduction. As part of solving the urgent problem of forecasting technical impacts and residual life depending on operating time, a method for determining the effect of the starting mode on a change in the structural parameter determining reliability is presented. The essence of this technique and...

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Background. The paper presented a method for estimating the Doppler factor of a received broadband pulse signal distorted by multiplicative interference with an a priori uncertain probability distribution. This paper was considered a case where the multiplicative interference in the observation has...

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Objectives. Methods for spline approximation of a sequence of points in a plane are increasingly used in various disciplines. A spline is defined as a single-valued function consisting of a known number of repeating elements, of which the most widely used are polynomials. When designing the routes o...

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Objectives. The theory and methods of spline approximation of plane curves given by a sequence of points are currently undergoing rapid development. Despite fundamental differences between used splines and those considered in the theory and its applications, results published earlier demonstrate the...

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Outlier mining constitutes an essential aspect of modern data analytics, focusing on the identification and interpretation of anomalous observations. Conventional density-based local outlier detection methodologies frequently exhibit limitations due to their inherent lack of data preprocessing capab...

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Accurate and predictive models of lithium-ion batteries are essential for optimizing performance, extending lifespan, and ensuring safety. The reliability of these models depends on the accurate estimation of internal electrochemical and mechanical parameters, many of which are not directly measurab...

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In the context of modernization of the Russian system of higher education, it is necessary to analyze the working time of the university lecturers, taking into account both basic job functions as the university lecturer, and others.The mathematical problem is presented for the optimal working time p...

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A new human-based heuristic optimization method, named the Snooker-Based Optimization Algorithm (SBOA), is introduced in this study. The inspiration for this method is drawn from the traits of sales elites—those qualities every salesperson aspires to possess. Typically, salespersons strive to enhan...

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To minimize the objective function in neural networks, first-order methods are usually used, which involve the repeated calculation of the gradient. The number of variables in modern neural networks can be many thousands and even millions. Numerous experiments show that the analytical calculation ti...

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Objectives. The work set out to develop a method for estimating the objective function (OF) landscape convexity in the extremum neighborhood. The proposed method, which requires no additional OF calculations or complicated mathematical processing, relies on the data accumulated during extremum searc...

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