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2010 Ninth International Conference on Machine Learning and Applications最新文献

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Determining Suitability of Locations for Installation of Solar Power Station Based on Probabilistic Inference 基于概率推理的太阳能电站选址适宜性确定
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.169
I. Colak, Ş. Sağiroğlu, M. Demirtaş, H. Kahraman
This paper presents a novel system is to develop to determine the suitability of a location for installation of solar power stations. Necessary data including speed and direction of wind, solar radiation and rainfall are received from a meteorology station, and data acquired are then converted to the labels. Finally, the labels are evaluated in a Naive Bayes algorithm to determine the suitability of the location for the installation and axial structure of a Solar Power Plant. This helps to determine complicated calculations by means of the support system developed.
本文提出了一种新的系统来确定太阳能电站安装地点的适宜性。从气象站接收风速和风向、太阳辐射和降雨量等必要数据,然后将获取的数据转换为标签。最后,用朴素贝叶斯算法对标签进行评估,以确定太阳能发电厂安装位置和轴向结构的适用性。这有助于通过开发的支持系统确定复杂的计算。
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引用次数: 1
Energy Production and Economic Growth: A Causality Analaysis for Turkey Based on Computer 能源生产与经济增长:基于计算机的土耳其因果关系分析
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.103
O. Ozkan, M. Aktas, H. S. Kuyuk, S. Bayraktaroglu
High levels of energy prices and the promise of international initiatives on decreasing the greenhouse gas emissions have regenerated the argument about the execution of energy conservation policies. This paper investigates the causal relationship between aggregated and disaggregated levels of energy production, energy demand, energy import and economic growth for Turkey for the period of 1975–2007. The relationship between the energy production, energy demand, energy import and Gross Domestic Product is examined. To this end, Engle-Granger cointegration, Error Correction Model and Granger causality tests are applied in order to determine the aforementioned relation. It is found that the energy production has direct relationship with the GDP and it has causality effects.
高水平的能源价格和减少温室气体排放的国际倡议的承诺重新引发了关于执行节能政策的争论。本文研究了1975-2007年期间土耳其能源生产、能源需求、能源进口和经济增长的汇总和分类水平之间的因果关系。考察了能源生产、能源需求、能源进口与国内生产总值之间的关系。为此,运用恩格尔-格兰杰协整、误差修正模型和格兰杰因果检验来确定上述关系。研究发现,能源生产与GDP之间存在着直接的因果关系。
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引用次数: 1
Learning in Dynamic Environments: Application to the Identification of Hybrid Dynamic Systems 动态环境下的学习:在混合动态系统辨识中的应用
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.86
M. S. Mouchaweh
The behavior of Hybrid Dynamic Systems (HDS) switches between several modes with different dynamics over time. Their identification aims at finding the model mapping the inputs to real-valued outputs. Generally, the identification is divided into tow steps: clustering and regression. In the clustering step, the discrete modes, i.e. classes, that each input-output data point belongs to as well as the switching sequence among these modes are estimated. The regression step aims at finding the models governing the continuous dynamic in each mode. In this paper, we propose an approach to achieve the clustering step of the identification of the switched HDS. In this approach, the number of discrete modes, classes, and the switching sequence among them are estimated using an unsupervised Pattern Recognition (PR) method. This estimation is achieved without the need to any prior information about these modes, e.g. their shape or distribution, or their number.
混合动力系统(HDS)的行为随时间在具有不同动力学的几种模式之间切换。它们的识别旨在找到将输入映射到实值输出的模型。一般来说,识别分为两个步骤:聚类和回归。在聚类步骤中,估计每个输入输出数据点所属的离散模式,即类,以及这些模式之间的切换顺序。回归步骤的目的是在每个模式中找到控制连续动态的模型。本文提出了一种实现切换HDS识别聚类步骤的方法。在该方法中,使用无监督模式识别(PR)方法估计离散模式、类别和它们之间的切换顺序的数量。这种估计的实现不需要任何关于这些模式的先验信息,例如它们的形状或分布,或它们的数量。
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引用次数: 4
A New Approach to Classification with the Least Number of Features 一种特征数最少的分类新方法
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.28
Sascha Klement, T. Martinetz
Recently, the so-called Support Feature Machine (SFM) was proposed as a novel approach to feature selection for classification, based on minimisation of the zero norm of a separating hyper plane. We propose an extension for linearly non-separable datasets that allows a direct trade-off between the number of misclassified data points and the number of dimensions. Results on toy examples as well as real-world datasets demonstrate that this method is able to identify relevant features very effectively.
最近,所谓的支持特征机(SFM)作为一种新的分类特征选择方法被提出,该方法基于分离超平面的零范数最小化。我们提出了线性不可分数据集的扩展,允许在错误分类数据点的数量和维数之间进行直接权衡。在玩具示例和现实世界数据集上的结果表明,该方法能够非常有效地识别相关特征。
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引用次数: 3
An Optimal Regression Algorithm for Piecewise Functions Expressed as Object-Oriented Programs 面向对象程序中分段函数的最优回归算法
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.149
Juan Luo, A. Brodsky
Core Java is a framework which extends the programming language Java with built-in regression analysis, i.e., the capability to do parameter estimation for a function. Core Java is unique in that functional forms for regression analysis are expressed as first-class citizens, i.e., as Java programs, in which some parameters are not a priori known, but need to be learned from training sets provided as input. Typical applications of Core Java include calibration of parameters of computational processes, described as OO programs. If-then-else statements of Java language are naturally adopted to create piecewise functional forms of regression. Thus, minimization of the sum of least squared errors involves an optimization problem with a search space that is exponential to the size of learning set. In this paper, we propose a combinatorial restructuring algorithm which guarantees learning optimality and furthermore reduces the search space to be polynomial in the size of learning set, but exponential to the number of piece-wise bounds.
Core Java是一个框架,它扩展了编程语言Java,内置了回归分析功能,即对函数进行参数估计的能力。Core Java的独特之处在于回归分析的函数形式被表示为一等公民,即Java程序,其中一些参数不是先验已知的,而是需要从作为输入提供的训练集中学习。Core Java的典型应用包括计算过程的参数校准,称为OO程序。自然地采用Java语言的If-then-else语句来创建分段函数形式的回归。因此,最小二乘误差和的最小化涉及一个搜索空间的优化问题,该搜索空间与学习集的大小呈指数关系。在本文中,我们提出了一种组合重构算法,该算法保证了学习的最优性,并进一步将搜索空间缩减为学习集大小的多项式,而分片界的数量是指数的。
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引用次数: 8
Learning to Be a Good Tour-Guide Robot 学习成为一个好的导游机器人
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.92
J. J. Rainer, R. Galán
Thanks to the numerous attempts that are being made to develop autonomous robots, increasingly intelligent and cognitive skills are allowed. This paper proposes an automatic presentation generator for a robot guide, which is considered one more cognitive skill. The presentations are made up of groups of paragraphs. The selection of the best paragraphs is based on a semantic understanding of the characteristics of the paragraphs, on the restrictions defined for the presentation and by the quality criteria appropriate for a public presentation. This work is part of the ROBONAUTA project of the Intelligent Control Research Group at the Universidad Politécnica de Madrid to create "awareness" in a robot guide. The software developed in the project has been verified on the tour-guide robot Urbano. The most important aspect of this proposal is that the design uses learning as the means to optimize the quality of the presentations. To achieve this goal, the system has to perform the optimized decision making, in different phases. The modeling of the quality index of the presentation is made using fuzzy logic and it represents the beliefs of the robot about what is good, bad, or indifferent about a presentation. This fuzzy system is used to select the most appropriate group of paragraphs for a presentation. The beliefs of the robot continue to evolving in order to coincide with the opinions of the public. It uses a genetic algorithm for the evolution of the rules. With this tool, the tour guide-robot shows the presentation, which satisfies the objectives and restrictions, and automatically it identifies the best paragraphs in order to find the most suitable set of contents for every public profile.
由于开发自主机器人的无数尝试,越来越多的智能和认知技能成为可能。本文提出了一种用于机器人导览的自动呈现生成器,它被认为是一种多认知技能。报告是由几组段落组成的。最佳段落的选择是基于对段落特征的语义理解,为演示定义的限制以及适合公开演示的质量标准。这项工作是马德里理工大学智能控制研究小组ROBONAUTA项目的一部分,目的是在机器人向导中创造“意识”。该项目开发的软件已在导游机器人Urbano上进行了验证。这个建议最重要的方面是,设计使用学习作为优化演示质量的手段。为了实现这一目标,系统必须在不同的阶段进行优化决策。使用模糊逻辑对演示的质量指标进行建模,它代表了机器人对演示的好、坏或不关心的信念。这个模糊系统用于选择最合适的段落组进行演示。为了与公众的意见一致,人们对机器人的信念不断演变。它使用遗传算法来进化规则。有了这个工具,导游机器人可以展示满足目标和限制的演示文稿,并自动识别最佳段落,以便为每个公共档案找到最合适的内容集。
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引用次数: 3
Overcoming Alpha-Beta Limitations Using Evolved Artificial Neural Networks 利用进化的人工神经网络克服Alpha-Beta限制
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.125
Y. Gal, M. Avigal
In order to give the computer the ability to play against human opponents, one could utilize the Alpha-Beta algorithm. However, this algorithm has several limitations restricting its playing capabilities. Over the years, many variants of this algorithm were developed, among them a couple that make use of neural networks: a neural network to focus the search in the game tree, and a neural network trained without expert knowledge that substitutes the heuristic function in the Alpha-Beta algorithm. In this paper the weaknesses of the Alpha-Beta algorithm are reviewed alongside its variants that use neural networks. It is explained how each approach overcomes different limitations of the Alpha-Beta algorithm, and an attempt to overcome its weaknesses by the use of a combination of the neural network algorithms is presented. The proposed hybrid algorithm, which was developed using Evolutionary Strategies, still keeps the advantages of each of the individual neural algorithms, and shows a significant improvement in play against them.
为了赋予计算机与人类对手对抗的能力,人们可以利用Alpha-Beta算法。然而,这种算法有一些限制,限制了它的播放能力。多年来,该算法的许多变体被开发出来,其中有几个使用了神经网络:一个神经网络专注于游戏树中的搜索,另一个神经网络在没有专家知识的情况下训练,替代了Alpha-Beta算法中的启发式函数。本文回顾了Alpha-Beta算法的弱点以及它使用神经网络的变体。它解释了每种方法如何克服Alpha-Beta算法的不同限制,并尝试通过使用神经网络算法的组合来克服其弱点。使用进化策略开发的混合算法仍然保留了每个单独神经算法的优点,并且在对抗它们时显示出显着的改进。
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引用次数: 0
Boosted Dynamic Cognitive Activity Recognition from Brain Images 增强动态认知活动识别的大脑图像
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.60
Jun Li, D. Tao
Functional Magnetic Resonance Imaging (fMRI) has become an important diagnostic tool for measuring brain haemodynamics. Previous research on analysing fMRI data mainly focuses on detecting low-level neuron activation from the ensued haemodynamic activities. An important recent advance is to show that the high-level cognitive status is recognisable from a period of fMRI records. Nevertheless, it would also be helpful to reveal dynamics of cognitive activities during the period. In this paper, we tackle the problem of discovering the dynamic cognitive activities by proposing an algorithm of boosted structure learning. We employ statistic model of random fields to represent the dynamics of the brain. To exploit the rich fMRI observations with reasonable model complexity, we build multiple models, where one model links the cognitive activities to only a fraction of the fMRI observations. We combine the simple models by using an altered AdaBoost scheme for multi-class structure learning and show theoretical justification of the proposed scheme. Empirical test shows the method effectively links the physiological and the psychological activities of the brain.
功能磁共振成像(fMRI)已成为测量脑血流动力学的重要诊断工具。以往分析功能磁共振成像数据的研究主要集中在从随后的血流动力学活动中检测低水平神经元的激活。最近的一个重要进展是表明,从一段时间的功能磁共振成像记录中可以识别出高水平的认知状态。然而,这也有助于揭示这一时期认知活动的动态。在本文中,我们提出了一种增强结构学习算法来解决动态认知活动的发现问题。我们采用随机场的统计模型来表示大脑的动态。为了利用丰富的fMRI观察和合理的模型复杂性,我们建立了多个模型,其中一个模型将认知活动仅与fMRI观察的一小部分联系起来。我们使用一种改进的AdaBoost方案将简单模型结合起来进行多类结构学习,并展示了所提出方案的理论证明。实证检验表明,该方法有效地将大脑的生理和心理活动联系起来。
{"title":"Boosted Dynamic Cognitive Activity Recognition from Brain Images","authors":"Jun Li, D. Tao","doi":"10.1109/ICMLA.2010.60","DOIUrl":"https://doi.org/10.1109/ICMLA.2010.60","url":null,"abstract":"Functional Magnetic Resonance Imaging (fMRI) has become an important diagnostic tool for measuring brain haemodynamics. Previous research on analysing fMRI data mainly focuses on detecting low-level neuron activation from the ensued haemodynamic activities. An important recent advance is to show that the high-level cognitive status is recognisable from a period of fMRI records. Nevertheless, it would also be helpful to reveal dynamics of cognitive activities during the period. In this paper, we tackle the problem of discovering the dynamic cognitive activities by proposing an algorithm of boosted structure learning. We employ statistic model of random fields to represent the dynamics of the brain. To exploit the rich fMRI observations with reasonable model complexity, we build multiple models, where one model links the cognitive activities to only a fraction of the fMRI observations. We combine the simple models by using an altered AdaBoost scheme for multi-class structure learning and show theoretical justification of the proposed scheme. Empirical test shows the method effectively links the physiological and the psychological activities of the brain.","PeriodicalId":336514,"journal":{"name":"2010 Ninth International Conference on Machine Learning and Applications","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128041334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of Transcriptional Regulatory Networks by Learning the Marginal Function of Outlier Sum Statistic 利用离群值和统计量的边际函数识别转录调控网络
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.48
Jinghua Gu, J. Xuan, Y. Wang, R. Riggins, R. Clarke
Network component analysis (NCA) and other methods based on the NCA model have become powerful bioinformatics tools to reconstruct underlying regulatory networks and recover hidden biological processes. However, due to the existence of experimental noises in micro array data and false information in network connectivity data (e.g., ChIP-on-chip binding data, motif information, etc.), it still remains challenging to reconstruct gene regulatory networks for real biomedical applications such as human cancer studies. In this paper, we model the relationship between the genes that share the same transcription factors (TF) from the angle of regression. We propose a statistic called outlier sum testing the conditional significance of the target genes. A Gibbs strategy is utilized in order to estimate the marginal value of outlier sum from its conditional function. Based on the outlier sum statistic we are able to extract the true target genes that carry information about transcription factor activities (TFAs) from the whole population. As a proof-of-concept, we demonstrated the efficiency and robustness of the proposed method on both simulation data and yeast cell cycle data.
网络成分分析(NCA)和其他基于NCA模型的方法已成为重建潜在调控网络和恢复隐藏生物过程的强大生物信息学工具。然而,由于微阵列数据中存在实验噪声,网络连接数据中存在虚假信息(如ChIP-on-chip结合数据、motif信息等),因此重建基因调控网络以用于人类癌症研究等实际生物医学应用仍然具有挑战性。本文从回归的角度对具有相同转录因子(TF)的基因之间的关系进行建模。我们提出了一种叫做离群值和的统计方法来检验目标基因的条件显著性。利用Gibbs策略从离群值和的条件函数中估计离群值和的边际值。基于离群和统计,我们能够从整个群体中提取携带转录因子活性(tfa)信息的真正靶基因。作为概念验证,我们在模拟数据和酵母细胞周期数据上证明了所提出方法的效率和鲁棒性。
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引用次数: 2
DC Bus Voltage Regulation of an Active Power Filter Using a Fuzzy Logic Controller 基于模糊控制器的有源电力滤波器直流母线电压调节
Pub Date : 2010-12-12 DOI: 10.1109/ICMLA.2010.165
I. Colak, R. Bayindir, O. Kaplan, Ferhat Tas
In this paper, a novel control algorithm has been proposed to regulate the DC bus voltage of a single phase shunt active power filter using a fuzzy logic controller. The DC bus voltage of a shunt active power filter should be controlled to compensate the filter losses on the grid. In many industrial applications, a PI controller is generally used to regulate the DC bus voltage of shunt active power filters. In the novel control algorithm the error signal caused by the filter losses has been computed firstly. Then this error signal has been compensated using the fuzzy logic controller. Simulation model of the shunt active power filter with the proposed control algorithm has been designed using the Matlab/Simulink/Simpower and the Fuzzy Toolbox. The simulation results show that the fuzzy logic controller compensates filter losses on the grid and improves the power quality by reducing the total harmonic distortion (THD) of the supply current and increasing the power factor.
本文提出了一种利用模糊控制器对单相并联有源电力滤波器直流母线电压进行调节的新算法。并联型有源电力滤波器的直流母线电压应加以控制,以补偿滤波器在电网上的损耗。在许多工业应用中,PI控制器通常用于调节并联有源电源滤波器的直流母线电压。在新的控制算法中,首先计算了由滤波器损耗引起的误差信号。然后利用模糊控制器对该误差信号进行补偿。利用Matlab/Simulink/Simpower和模糊工具箱,设计了并联型有源电力滤波器的仿真模型。仿真结果表明,模糊控制器通过降低供电电流的总谐波失真(THD)和提高功率因数来补偿滤波器在电网上的损耗,改善电能质量。
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引用次数: 19
期刊
2010 Ninth International Conference on Machine Learning and Applications
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