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Acceptable-and-attractive Approximate Solution of a Continuous Non-Cooperative Game on a Product of Sinusoidal Strategy Functional Spaces 正弦策略函数空间乘积上连续非合作对策的可接受且有吸引力的近似解
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-06-01 DOI: 10.2478/fcds-2021-0012
V. Romanuke
Abstract A problem of solving a continuous noncooperative game is considered, where the player’s pure strategies are sinusoidal functions of time. In order to reduce issues of practical computability, certainty, and realizability, a method of solving the game approximately is presented. The method is based on mapping the product of the functional spaces into a hyperparallelepiped of the players’ phase lags. The hyperparallelepiped is then substituted with a hypercubic grid due to a uniform sampling. Thus, the initial game is mapped into a finite one, in which the players’ payoff matrices are hypercubic. The approximation is an iterative procedure. The number of intervals along the player’s phase lag is gradually increased, and the respective finite games are solved until an acceptable solution of the finite game becomes sufficiently close to the same-type solutions at the preceding iterations. The sufficient closeness implies that the player’s strategies at the succeeding iterations should be not farther from each other than at the preceding iterations. In a more feasible form, it implies that the respective distance polylines are required to be decreasing on average once they are smoothed with respective polynomials of degree 2, where the parabolas must be having positive coefficients at the squared variable.
摘要考虑了一个求解连续非合作对策的问题,其中玩家的纯策略是时间的正弦函数。为了减少实际可计算性、确定性和可实现性的问题,提出了一种近似求解博弈的方法。该方法基于将函数空间的乘积映射到玩家相位滞后的超平行投影中。然后,由于均匀采样,用超立方体网格代替超平行网格。因此,初始博弈被映射到一个有限的博弈中,其中玩家的支付矩阵是超三次的。近似是一个迭代过程。沿着游戏者的相位滞后的间隔的数量逐渐增加,并且求解相应的有限对策,直到有限对策的可接受解变得足够接近于先前迭代中的相同类型的解。足够接近意味着玩家在后续迭代中的策略彼此之间的距离不应比之前的迭代更远。在一种更可行的形式中,这意味着一旦用相应的2次多项式对相应的距离多段线进行平滑,就要求它们平均递减,其中抛物线在平方变量处必须具有正系数。
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引用次数: 1
A Statistical Evaluation of The Depth of Inheritance Tree Metric for Open-Source Applications Developed in Java 用Java开发的开源应用程序的继承树深度度量的统计评价
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-06-01 DOI: 10.2478/fcds-2021-0011
S. Prykhodko, N. Prykhodko, T. Smykodub
Abstract The Depth of Inheritance Tree (DIT) metric, along with other ones, is used for estimating some quality indicators of software systems, including open-source applications (apps). In cases involving multiple inheritances, at a class level, the DIT metric is the maximum length from the node to the root of the tree. At an application (app) level, this metric defines the corresponding average length per class. It is known, at a class level, a DIT value between 2 and 5 is good. At an app level, similar recommended values for the DIT metric are not known. To find the recommended values for the DIT mean of an app we have proposed to use the confidence and prediction intervals. A DIT mean value of an app from the confidence interval is good since this interval indicates how reliable the estimate is for the DIT mean values of all apps used for estimating the interval. A DIT mean value higher than an upper bound of prediction interval may indicate that some classes have a large number of the inheritance levels from the object hierarchy top. What constitutes greater app design complexity as more classes are involved. We have estimated the confidence and prediction intervals of the DIT mean using normalizing transformations for the data sample from 101 open-source apps developed in Java hosted on GitHub for the 0.05 significance level.
继承树深度(Depth of Inheritance Tree, DIT)度量与其他度量一起,用于评估软件系统(包括开源应用程序)的一些质量指标。在涉及多个继承的情况下,在类级别上,DIT度量是从节点到树的根的最大长度。在应用程序级别,这个指标定义了每个类相应的平均长度。众所周知,在类级别上,DIT值在2到5之间是好的。在应用程序级别,不知道DIT度量的类似推荐值。为了找到应用程序的DIT平均值的推荐值,我们建议使用置信区间和预测区间。来自置信区间的应用程序的DIT平均值是好的,因为这个区间表明用于估计区间的所有应用程序的DIT平均值的估计有多可靠。如果DIT平均值高于预测区间的上限,则可能表明某些类具有大量来自对象层次结构顶部的继承级别。当涉及到更多的类时,是什么构成了更大的应用设计复杂性。我们对101个开源应用程序的数据样本使用归一化转换,估计了DIT平均值的置信度和预测区间,这些应用程序是用Java开发的,托管在GitHub上,显著性水平为0.05。
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引用次数: 2
Applying Data Envelopment Analysis Principle in Ordinal Multi Criteria Decision Analysis 数据包络分析原理在有序多准则决策分析中的应用
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-06-01 DOI: 10.2478/fcds-2021-0010
M. Kress
Abstract We consider a multicriteria decision analysis (MCDA) problem where importance of criteria, and evaluations of alternatives with respect to the criteria, are expressed on a qualitative ordinal scale. Using the extreme-point principle of Data Envelopment Analysis (DEA), we develop a two-parameter method for obtaining overall ratings of the alternatives when preferences and evaluations are made on an ordinal scale. We assume no parametric setup other than the two parameters that reflect minimum intensities of discriminating among rank positions: one parameter for the alternatives’ ranking and one for the criteria ranking. These parameters are bounded by the ordinal input data, and they imply a universal tie among the alternatives when both parameters are selected to be zero. We describe the model, discuss its theoretical underpinning, and demonstrate its application.
摘要我们考虑一个多准则决策分析(MCDA)问题,其中准则的重要性以及对备选方案相对于准则的评估以定性有序量表表示。利用数据包络分析(DEA)的极值原理,我们开发了一种双参数方法,用于在有序量表上进行偏好和评估时获得备选方案的总体评级。我们假设除了两个参数之外没有其他参数设置,这两个参数反映了等级位置之间的最小区分强度:一个参数用于备选方案的等级,另一个用于标准等级。这些参数受有序输入数据的约束,并且当两个参数都选择为零时,它们意味着备选方案之间的普遍联系。我们描述了该模型,讨论了它的理论基础,并展示了它的应用。
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引用次数: 1
Using TeX Markup Language for 3D and 2D Geological Plotting TeX标记语言在三维和二维地质制图中的应用
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-03-01 DOI: 10.2478/fcds-2021-0004
V. Lemenkov, Polina Lemenkova
Abstract The paper presents technical application of TeX high-level, descriptive markup language for processing geological dataset from soil laboratory. Geotechnical measurements included equivalent soil cohesion, absolute and absolute deformation index, soil compressibility coefficient by time of immersion depth, exposure time to compressive strength to samples and physical and mechanical properties (humidity, density). Dataset was received from laboratory based experimental tests of the physical and mechanical properties of soils. Data were converted to csv table and processed by LaTeX. Methodology is based on LaTeX packages: {tikz}, {tikz-3dplot}, {tikzpicture}, {pgfplot}, {filecontetns}, {spy} for 3D plotting showing correlation in variables and descriptive statistical analysis based on the data array processing. Results demonstrated LaTeX scripts and graphics: 2D and 3D scatterplots, ternaries, bar charts, boxplots, zooming techniques detailing fragment of the plot, flowchart. Research novelty consists in technical approach of TeX language application for geo- logical data processing and graphical visualization. Engineering graphics by TeX was demonstrated with screenshots of the codes used for plotting.
摘要本文介绍了TeX高级描述性标记语言在处理土壤实验室地质数据集方面的技术应用。岩土工程测量包括等效土壤内聚力、绝对和绝对变形指数、随浸泡深度变化的土壤压缩系数、暴露于样品抗压强度的时间以及物理和机械特性(湿度、密度)。数据集来自土壤物理和力学性质的实验室实验测试。数据被转换为csv表,并由LaTeX进行处理。方法论基于LaTeX软件包:{tikz}、{tikz-3dplot}、{tikzpicture}、{pgfplot}、{filecontetns}、{spy},用于显示变量相关性的3D绘图和基于数据阵列处理的描述性统计分析。结果展示了LaTeX脚本和图形:2D和3D散点图、三角图、条形图、箱线图、缩放技术详细说明了图的片段、流程图。研究的新颖性在于TeX语言应用于地质数据处理和图形可视化的技术方法。TeX的工程制图通过用于绘图的代码的屏幕截图进行了演示。
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引用次数: 32
An Integration of Neural Network and Shuffled Frog-Leaping Algorithm for CNC Machining Monitoring 神经网络与Shuffled Frog跳跃算法在数控加工监控中的集成
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-03-01 DOI: 10.2478/fcds-2021-0003
A. Goli, E. B. Tirkolaee, G. Weber
Abstract This paper addresses Acoustic Emission (AE) from Computer Numerical Control (CNC) machining operations. Experimental measurements are performed on the CNC lathe sensors to provide the power consumption data. To this end, a hybrid methodology based on the integration of an Artificial Neural Network (ANN) and a Shuffled Frog-Leaping Algorithm (SFLA) is applied to the data resulting from these measurements for data fusion from the sensors which is called SFLA-ANN. The initial weights of ANN are selected using SFLA. The goal is to assess the potency of the signal periodic component among these sensors. The efficiency of the proposed SFLA-ANN method is analyzed compared to hybrid methodologies of Simulated Annealing (SA) algorithm and ANN (SA-ANN) and Genetic Algorithm (GA) and ANN (GA-ANN).
摘要本文研究了计算机数控(CNC)加工过程中的声发射问题。对数控车床传感器进行了实验测量,提供了功耗数据。为此,将基于人工神经网络(ANN)和洗漱蛙跳算法(SFLA)的混合方法应用于这些测量数据的融合,称为SFLA-ANN。使用SFLA选择人工神经网络的初始权值。目标是评估这些传感器之间的信号周期分量的效力。与模拟退火(SA)算法和人工神经网络(SA-ANN)、遗传算法(GA)和人工神经网络(GA-ANN)混合方法的效率进行了对比分析。
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引用次数: 9
An Algorithm for Choosing, Ordering a New Criteria of a Bi-Objective Flow Problem 双目标流问题新准则的选择、排序算法
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-03-01 DOI: 10.2478/fcds-2021-0002
Salima Nait Belkacem
Abstract In this paper, we propose an algorithm which is based on many things: the notions well-known of the simplex network method, Ford Fulkerson’s algorithm and our new idea, which is << the gain cycles >>, applied on a bi-objective minimum cost flow problem. This algorithm permits us to have a good order of many criteria in a rapid and an efficient way; because this classification permits us to structure the optimal area, in which we can choose the best action among the others which exist in the objective space. From this one, we distinguish, that the resolution of this problem comes to find an under set of good actions, among which the decider can select an action of best compromise, or make a decision, in the case where reference indications of the deciders may change. A didactic example is done to illustrate our algorithm.
摘要:本文提出了一种基于单纯形网络方法、Ford Fulkerson算法和>算法的新算法,并将其应用于双目标最小代价流问题。该算法允许我们以一种快速有效的方式对许多标准进行排序;因为这种分类允许我们构建最优区域,我们可以在客观空间中存在的其他行动中选择最佳行动。从这个例子中,我们可以看出,这个问题的解决是要找到一组良好的行动,在这些行动中,决策者可以选择一个最佳妥协的行动,或者在决策者的参考指示可能发生变化的情况下做出决定。通过一个说明性的例子来说明我们的算法。
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引用次数: 2
Morgan-Voyce Polynomial Approach for Quaternionic Space Curves of Constant Width 常宽四元数空间曲线的Morgan—Voyce多项式解法
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-03-01 DOI: 10.2478/fcds-2021-0005
Tuba Ağirman Aydin, R. Ayazoğlu, H. Kocayiğit
Abstract The curves of constant width are special curves used in engineering, architecture and technology. In the literature, these curves are considered according to different roofs in different spaces and some integral characterizations of these curves are obtained. However, in order to examine the geometric properties of curves of constant width, more than characterization is required. In this study, firstly differential equations characterizing quaternionic space curves of constant width are obtained. Then, the approximate solutions of the differential equations obtained are calculated by the Morgan-Voyce polynomial approach.The geometric properties of this curve type are examined with the help of these solutions.
等宽曲线是工程、建筑和工艺中使用的特殊曲线。在文献中,这些曲线是根据不同空间中不同的屋顶来考虑的,并得到了这些曲线的一些积分特征。然而,为了检查恒定宽度曲线的几何特性,需要的不仅仅是表征。在本研究中,首先得到了表征常宽四元数空间曲线的微分方程。然后,用Morgan-Voyce多项式方法计算得到的微分方程的近似解。借助于这些解来检验这种曲线类型的几何性质。
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引用次数: 1
Editorial – Preface to the Special Issue on Numerical Techniques Meet with OR 社论-《与OR相遇的数值技术》特刊序言
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-03-01 DOI: 10.2478/fcds-2021-0001
Burcu Gürbüz, G. Weber
Abstract This special issue of the Foundations of Computing and Decision Sciences, titled ”Numerical Techniques Meet with OR”, is devoted to the numerical techniques and their applications in real-world phenomena. The special issue and its editorial present numerical algorithms as they meet with different research topics such as, e.g., from operational research, supply chain management, geometrical structures and Covid-19 effects on financial applications. Besides, the special issue covers instructional information about numerical techniques which are useful for OR research problems and real-world applications on such issues.
这期《计算与决策科学基础》的特刊题为“数值技术与OR相遇”,致力于数值技术及其在现实世界现象中的应用。这期特刊及其社论介绍了数值算法与不同研究主题的结合,例如运筹学、供应链管理、几何结构和Covid-19对金融应用的影响。此外,特刊还涵盖了数值技术的教学信息,这些信息对OR研究问题和此类问题的实际应用非常有用。
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引用次数: 1
Investigation of E-Cigarette Smoking Model with Mittag-Leffler Kernel 带有Mittag-Leffler核的电子烟吸烟模型研究
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-03-01 DOI: 10.2478/fcds-2021-0007
Esmehan Uçar, Sümeyra Uçar, F. Evirgen, N. Özdemir
Abstract Smoking is the most lethal social poisoning event. The World Health Organization defines smoking as the most important preventable cause of disease. Around 4.9 million people worldwide die from smoking every year. In order to analysis this matter, we aim to investigate an e-cigarette smoking model with Atangana-Baleanu fractional derivative. We obtain the existence conditions of the solution for this fractional model utilizing fixed-point theory. After giving existence conditions, the uniqueness of the solution is proved. Finally, to show the effect of the Atangana-Baleanu fractional derivative on the model, we give some numerical results supported by illustrative graphics.
摘要吸烟是最致命的社会中毒事件。世界卫生组织将吸烟定义为最重要的可预防疾病原因。全世界每年约有490万人死于吸烟。为了分析这一问题,我们旨在研究一个具有Atangana Baleanu分数导数的电子烟吸烟模型。利用不动点理论,得到了该分数模型解的存在条件。在给出存在条件后,证明了解的唯一性。最后,为了说明Atangana-Baleanu分数导数对模型的影响,我们给出了一些由图解支持的数值结果。
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引用次数: 9
Understanding the Impact of COVID–19 on Global Financial Network Using Graph Based Algorithm: Minimum Spanning Tree Approach 使用基于图的算法理解COVID-19对全球金融网络的影响:最小生成树方法
IF 1.1 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2021-03-01 DOI: 10.2478/fcds-2021-0008
Veysel Fuat Hatipoğlu
Abstract In this paper effects of COVID–19 pandemic on stock market network are analyzed by an application of operational research with a mathematical approach. For this purpose two minimum spanning trees for each time period namely before and during COVID–19 pandemic are constructed. Dynamic time warping algorithm is used to measure the similarity between each time series of the investigated stock markets. Then, clusters of investigated stock markets are constructed. Numerical values of the topology evaluation for each cluster and time period is computed.
摘要本文运用运筹学的数学方法分析了新冠肺炎疫情对股市网络的影响。为此,为每个时间段,即2019冠状病毒病大流行之前和期间,构建了两个最小生成树。动态时间扭曲算法用于测量所调查股票市场的每个时间序列之间的相似性。然后,构建了被调查的股票市场集群。计算每个集群和时间段的拓扑评估的数值。
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引用次数: 3
期刊
Foundations of Computing and Decision Sciences
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