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2018 International Conference on Unconventional Modelling, Simulation and Optimization - Soft Computing and Meta Heuristics - UMSO最新文献

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引用次数: 0
Study of Knowledge Acquisition Using Rough Set Merging Rule from Time Series Data 基于粗糙集归并规则的时间序列数据知识获取研究
Yoshiyuki Matsumoto, J. Watada
Rough Set Theory proposed in 1982 by Zdzislaw Pawlak. This theory can be data mining based on decision rules from a database, a web page, a big data, and so on. The decision rule is employed for data analysis as well as calculating an unknown object. We used rough set to analyze time-series data. We obtained prediction knowledge from time series data using decision rules. Economic time-series data was predicted using decision rules. However, when acquiring a decision rule from time series data, there are cases where the number of decision rules is very large. If the number of decision rules is very large, it is difficult to acquire knowledge. We proposed a method of merging them to reduce the number of decision rules. Similar to how it is difficult to acquire knowledge from multiple rules, it is also difficult to acquire knowledge from rules with a large number of condition attributes. Our method reduces the number of conditions attributes and thereby reduces the number of rules. However, it is not always possible to reduce rules. There are cases where the number of rules increases. In this thesis, we examine under what conditions rule reduction is possible. Change the condition attribute and verify the effect on rule reduction. We acquire knowledge using the Nikkei Stock Average. We acquire decision rule by rough set method and consider the influence on rule reduction.
粗糙集理论由Zdzislaw Pawlak于1982年提出。这个理论可以是基于数据库、网页、大数据等决策规则的数据挖掘。该决策规则用于数据分析和计算未知对象。我们使用粗糙集对时间序列数据进行分析。我们利用决策规则从时间序列数据中获得预测知识。利用决策规则对经济时序数据进行预测。然而,当从时间序列数据中获取决策规则时,存在决策规则数量非常大的情况。如果决策规则的数量非常大,则很难获得知识。我们提出了一种合并决策规则的方法,以减少决策规则的数量。与从多个规则中获取知识的困难类似,从具有大量条件属性的规则中获取知识也很困难。我们的方法减少了条件属性的数量,从而减少了规则的数量。然而,减少规则并不总是可能的。在某些情况下,规则的数量会增加。在本文中,我们研究了在什么条件下规则约简是可能的。更改条件属性并验证对规则约简的影响。我们通过日经平均指数获取知识。采用粗糙集方法获取决策规则,并考虑对规则约简的影响。
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引用次数: 0
Evaluation of an Interval-Type Model on Fuzzy Regression 区间型模糊回归模型的评价
Y. Yabuuchi
A fuzzy regression model is classified into two types: non-interval-type and interval-type fuzzy regressions. A non-interval-type fuzzy regression model can analyze errors similar to the manner in which a statistical least squares model can. In contrast, because an interval-type fuzzy regression model illustrates the possibility of an analyzed system by including data, the obtained regression does not analyze prediction accuracies such as in error analysis. In other words, it is important to illustrate the amount of possibilities of an analyzed system by regression outputs. The appropriate evaluation functions, which can be easily interpreted, are used for this purpose. This paper proposes a new evaluation function, which is validated using a numerical example. The evaluation function is explained and discussed herein using the numerical example.
模糊回归模型分为非区间型和区间型两种。非区间型模糊回归模型可以像统计最小二乘模型那样分析误差。相反,由于区间型模糊回归模型通过包含数据来说明被分析系统的可能性,因此获得的回归不分析预测精度,例如误差分析。换句话说,通过回归输出来说明被分析系统的可能性是很重要的。为此目的使用了易于解释的适当的求值函数。本文提出了一种新的评价函数,并通过数值算例进行了验证。文中用数值算例对评价函数进行了说明和讨论。
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引用次数: 0
Numerical modeling of CO2 sequestration into basalt at high pressure and temperature with variable brine solutions 高压温度下不同盐水溶液下玄武岩中CO2固存的数值模拟
M. Kashim, H. Tsegab, S. A. Ayub, Zainol Affendi B Abu Bakar
Mineral carbonation is a process whereby CO2 is chemically reacted with calcium and/or magnesium containing minerals to form stable carbonate minerals which needs minimal long-term monitoring. The in situ transformation mechanism involves injection of CO2 into geological formations where the temperature, pressure, and pH parameters for mineral-carbonation prevails. However, the dissolution of CO2 into formation waters depend on temperature, pressure, salinity, and buffering of pH through fluid-rock reaction, which needs numerical modeling to see the combined effect of certain variables through time. This paper presents findings from combined effect of salinity, temperature and pressure in a local geological formation, Kuantan Basalt. The models show that the amount of trapped CO2 in the selected geological formation with pure water condition and at temperature ranges from 60-150 °C is much lower than that of CO2 trapped at higher salinity geological conditions. The models also show a general decreasing amount of trapped CO2 with increasing pressure for salinity range from freshwater to 20000mg/l of NaCl. However, an increased amount of trapped CO2 with higher salinity such as the gas field of Malaysian scenario is observed. These findings may provide clues as what could happen if CO2 is sequestered into geological formations with similar mineralogical composition, similar temperature, salinity and pressure conditions.
矿物碳酸化是二氧化碳与含钙和/或镁的矿物发生化学反应,形成稳定的碳酸盐矿物的过程,这种矿物需要最少的长期监测。就地转化机制包括将二氧化碳注入地质构造中,其中温度、压力和pH参数对矿物碳酸化起主导作用。然而,CO2在地层水中的溶解取决于温度、压力、盐度和流体-岩石反应对pH的缓冲作用,需要通过数值模拟来观察某些变量随时间的综合影响。本文介绍了关丹玄武岩局部地质构造中盐度、温度和压力的综合效应。模型表明,在60 ~ 150℃的纯水条件下,所选地质地层的CO2捕获量远低于高盐度地质条件下的CO2捕获量。模型还显示,从淡水到20000mg/l NaCl的盐度范围内,随着压力的增加,捕获的CO2量普遍减少。然而,观察到较高盐度下捕获的二氧化碳量增加,例如马来西亚情景的气田。如果二氧化碳被封存在具有相似矿物组成、相似温度、盐度和压力条件的地质构造中,这些发现可能会提供线索。
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引用次数: 1
Toll Optimization Problems with Quadratic Costs 具有二次代价的收费优化问题
Viacheslav Kalashnikov, N. Kalashnykova, J. G. Flores-Muñiz
We study a bilevel programming problem molding the optimal toll assignment related to a network of toll and free highways. A public operator or a private company running the toll roads make decisions at the upper level by alloting the tolls in order to maximize their profits. The lower level decision makers (highway users), instead, look for the equilibrium among them while attempting to arrange their transportation flows along the routes aiming at minimization of their total travel costs subject to the satisfied demand for their goods/passengers. Our model extends the previous ones by adding quadratic terms to the lower level costs thus reflecting the mutual traffic congestion on the roads. Moreover, as a new feature, the lower level quadratic costs aren’t separable anymore, i.e., they are functions of the total flow along the arc (highway). In order to solve this bilevel programming problem, a heuristic algorithm making use of the sensitivity analysis techniques for quadratic programs is developed. As a remedy against being stuck at a local maximum of the upper-level objective function, we modify the well-known "filled function" method which brings us to a neighborhood of another local maximum point. A series of numerical experiments conducted on test models of small and medium size shows that the new algorithm is competitive enough.
本文研究了一个双层规划问题,该问题是关于收费和免费公路网络的最优收费分配问题。公共经营者或经营收费公路的私人公司在上层作出决定,通过分配通行费来最大化他们的利润。而较低层次的决策者(公路用户)在试图安排他们的运输流时,寻找他们之间的均衡,目标是在满足他们的货物/乘客需求的情况下,使他们的总旅行成本最小化。我们的模型扩展了之前的模型,在较低层次的成本上增加了二次项,从而反映了道路上的相互交通拥堵。此外,作为一个新的特征,低层二次成本不再是可分离的,即它们是沿弧(公路)总流量的函数。为了解决这一双层规划问题,利用二次规划的灵敏度分析技术,提出了一种启发式算法。为了避免被困在上层目标函数的局部最大值处,我们修改了众所周知的“填充函数”方法,使我们到达另一个局部最大值点的邻域。在中小型测试模型上进行的一系列数值实验表明,新算法具有足够的竞争力。
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引用次数: 2
UMSO 2018 Committee
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引用次数: 0
Extensions of Antipodal-Type Theorems 对跖型定理的扩展
Viacheslav Kalashnikov, A. Talman, N. Kalashnykova, L. Alanís-López
The paper develops the extensions of both the antipodal (Borsuk–Ulam) theorem and Browder theorem to the cases embracing star-shaped domains of the studied mappings and a multi-valued nature of the latter.To be more specific, by making use of the triangulation procedure, we spread out the antipodal and fixed-point theorems to the case of not necessarily convex (star-shaped) domains. In addition, similar extensions are obtained for multi-valued mappings defined over star-shaped sets. Moreover, a directt algorithm shaping the required connected path of the zero points of the mapping has been designed, and its convergence demonstrated.
本文发展了对映(Borsuk-Ulam)定理和Browder定理在包含所研究映射的星形域和后者的多值性质的情况下的推广。更具体地说,通过使用三角剖分程序,我们将对映定理和不动点定理扩展到不一定是凸(星形)域的情况。此外,对于星形集上定义的多值映射也得到了类似的扩展。此外,还设计了一种直接确定映射的零点所需要的连通路径的算法,并证明了该算法的收敛性。
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引用次数: 0
A Meta-Heuristic Parameter Selector Based Support Vector Machine for Human Tracking 基于元启发式参数选择器的支持向量机人体跟踪
Zhenyuan Xu, Chao Xu, J. Watada, Lihan Hu
Human tracking is one of the most important researches in computer vision. It is quite useful for many applications, such as surveil- lance systems and smart vehicle systems. It is also an important basic step for content analysis for behavior recognition and target detection. Due to the variations in human positions, complicated backgrounds and environmental conditions, human tracking remains challenging work. In particular, difficulties caused by environment and background such as occlusion and noises should be solved. Also, real-time human tracking now seems a critical step in intelligent video surveillance systems because of its huge computational workload. In this paper we propose a Particle Swarm Optimization based Support Vector Machine (PSO-SVM) to overcome these problems. First, we finish the preliminary human tracking step in several frames based on some filters such as particle filter and Kalman filter. Second, for each newly come frame need to be processed, we use the proposed PSO-SVM to process the previous frames as a regression frame work, based on this regression frame work, an estimated location of the target will be calculated out. Third, we process the newly come frame based on the particle filter and calculate out the target location as the basic target location. Finally, based on comparison analysis between basic target location and estimated target location, we can get the tracked target location. Experiment results on several videos will show the effectiveness and robustness of the proposed method.
人体跟踪是计算机视觉领域的重要研究方向之一。它在监视系统和智能车辆系统等许多应用中都非常有用。它也是行为识别和目标检测的内容分析的重要基础步骤。由于人体位置的变化,复杂的背景和环境条件,人体跟踪仍然是一项具有挑战性的工作。特别是要解决遮挡、噪声等环境和背景造成的困难。此外,由于其巨大的计算工作量,实时人体跟踪现在似乎是智能视频监控系统的关键一步。本文提出了一种基于粒子群优化的支持向量机(PSO-SVM)来克服这些问题。首先,我们基于粒子滤波和卡尔曼滤波等滤波器在几帧内完成初步的人体跟踪步骤。其次,对于每一个需要处理的新帧,我们使用所提出的PSO-SVM将之前的帧作为回归框架进行处理,基于该回归框架计算出目标的估计位置。第三,基于粒子滤波对新帧进行处理,计算出目标位置作为基本目标位置;最后,通过对基本目标位置和估计目标位置的比较分析,得到跟踪目标位置。在多个视频上的实验结果表明了该方法的有效性和鲁棒性。
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引用次数: 1
A Rough Set Based Rule Induction Approach to Geoscience Data 基于粗糙集的地球科学数据规则归纳方法
T. Hossain, J. Watada, M. Hermana, Siti Rohkmah Bt M Shukri, H. Sakai
Characterization and evaluation of (oil and gas) reservoirs is typically achieved using a combination of seismic and well data. It is therefore critical that the two data types are well calibrated to correct and account for the fact that seismic data are measured at a scale of tens of meters while well data at a scale of tens of centimeters. In addition, seismic data can be poorly processed; some well logs can be damaged, affected by mud filtrate invasion or completely missing. This research proposes an approach based on rough set theory for generating significant rules from a not consistent information system that consists of the preprocessed seismic and well log data collected from geological data using stratified random sampling method. It is often that Geosciences’ researches encountering inexact, uncertain, or vague data. Rough Set Theory (RST), originally put forward by Zdzisław I. Pawlak, is a tool for dealing with uncertainty and vagueness. RST is very effective to address data mining tasks like rule extraction, clustering and classification. In RST the available data are used for performing the computations. RST works by utilizing the granularity structure of the data. Applying the RST on the data it generates a set of significant rules. These rules are likely to be supportive to the Geoscientists around the world to know the data behavior, which will enable them to know the dependency of the petro-physical properties obtained from well log and elastic properties which can be derived from seismic attributes and to improve the accuracy of the Data.
油气储层的特征和评价通常是通过结合地震和井数据来实现的。因此,必须对这两种数据类型进行很好的校准,以纠正和解释地震数据是在几十米尺度上测量的,而井数据是在几十厘米尺度上测量的。此外,地震数据的处理可能很差;有些测井曲线可能被泥浆滤液侵入或完全丢失而损坏。本研究提出了一种基于粗糙集理论的方法,用于从不一致的信息系统中生成重要规则,该信息系统由分层随机抽样方法收集的地质数据中预处理的地震和测井数据组成。地球科学研究经常遇到不准确、不确定或模糊的数据。粗糙集理论(RST)是一种处理不确定性和模糊性的工具,最早由Zdzisław I. Pawlak提出。RST在处理规则提取、聚类和分类等数据挖掘任务方面非常有效。在RST中,可用的数据用于执行计算。RST通过利用数据的粒度结构来工作。在数据上应用RST,它会生成一组重要的规则。这些规则可能有助于世界各地的地球科学家了解数据的行为,使他们能够了解从测井中获得的岩石物理性质与从地震属性中获得的弹性性质之间的依赖关系,从而提高数据的准确性。
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引用次数: 4
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2018 International Conference on Unconventional Modelling, Simulation and Optimization - Soft Computing and Meta Heuristics - UMSO
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