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2014 IEEE Symposium on Computational Intelligence for Engineering Solutions (CIES)最新文献

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Determination of sugar content in whole Port Wine grape berries combining hyperspectral imaging with neural networks methodologies 结合高光谱成像和神经网络方法测定整个波特酒葡萄果实中的糖含量
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011850
Véronique M. Gomes, A. Fernandes, A. Mendes-Faia, P. Melo-Pinto
The potential of hyperspectral imaging combined with machine learning algorithms to measure sugar content of whole grape berries is presented, as a starting point for developing generalized and flexible frameworks to estimate enological parameters in wine grape berries. In this context, to evaluate the generalization ability of the used machine learning procedure, two neural networks were trained with different training data to compare the performance of each one when tested with the same data set. Six whole grape berries were used for each sample to draw the hyperspectral spectrum in reflectance mode between 308 and 1028 nm. The sugar content was estimated from the spectra using feedforward multiplayer perceptrons in two different neural networks trained each one with a data set from a different year (2012 & 2013); the validation for both neural networks was done by n-fold cross-validation, and the test set used was from 2013. The test set revealed R2 values of 0.906 and RMSE of 1.165 °Brix for the neural network trained with 2012 data and R2 of 0.959 and RMSE of 1.026 °Brix for the 2013 training data neural network. The results obtained indicate that both neural networks present good results and that the 2012 training data neural network exhibits a good performance when compared with the other NN, suggesting that the approach is robust since a generalization (without further training) over years may be obtainable.
提出了结合机器学习算法的高光谱成像测量整个葡萄浆果糖含量的潜力,作为开发广义和灵活框架的起点,以估计酿酒葡萄浆果的酒精度参数。在这种情况下,为了评估所使用的机器学习过程的泛化能力,使用不同的训练数据训练两个神经网络,以比较每个神经网络在使用相同数据集测试时的性能。每个样品使用6个完整的葡萄浆果,在308 ~ 1028 nm的反射率模式下绘制高光谱光谱。在两个不同的神经网络中使用前馈多人感知器从光谱中估计糖含量,每个神经网络使用来自不同年份(2012年和2013年)的数据集进行训练;对两个神经网络的验证采用n-fold交叉验证,使用的测试集来自2013年。测试集显示,2012年训练数据神经网络的R2为0.906,RMSE为1.165°Brix; 2013年训练数据神经网络的R2为0.959,RMSE为1.026°Brix。得到的结果表明,两种神经网络都呈现出良好的结果,并且2012年的训练数据神经网络与另一种神经网络相比表现出良好的性能,这表明该方法是鲁棒的,因为可以获得多年的泛化(无需进一步训练)。
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引用次数: 12
Artificial intelligence-based modelling and optimization of microdrilling processes 基于人工智能的微钻过程建模与优化
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011830
Gerardo Beruvides, F. Castaño, R. Haber, Ramón Quiza Sardiñas, M. R. Santana
This paper presents one strategy for modeling and optimization of a microdilling process. Experimental work has been carried out for measuring the thrust force for five different commonly used alloys, under several cutting conditions. An artificial neural network-based model was implemented for modelling the thrust force. Neural model showed a high goodness of fit and appropriate generalization capability. The optimization process was executed by considered two different and conflicting objectives: the unit machining time and the thrust force (based on the previously obtained model). A multiobjective genetic algorithm was used for solving the optimization problem and a set of non-dominated solutions was obtained. The Pareto's front representation was depicted and used for assisting the decision making process.
本文提出了一种微钻过程建模与优化策略。对五种常用合金在不同切削条件下的推力进行了实验测量。建立了基于人工神经网络的推力模型。神经网络模型具有较高的拟合优度和良好的泛化能力。优化过程考虑了两个不同且相互冲突的目标:单位加工时间和推力(基于先前获得的模型)。采用多目标遗传算法求解优化问题,得到了一组非支配解。帕累托的正面表示被描绘并用于辅助决策过程。
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引用次数: 1
A survey on the application of Neural Networks in the safety assessment of oil and gas pipelines 神经网络在油气管道安全评价中的应用综述
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011837
M. Layouni, S. Tahar, M. Hamdi
Pipeline systems are an essential component of the oil and gas supply chain today. Although considered among the safest transportation methods, pipelines are still prone to failure due to corrosion and other types of defects. Such failures can lead to serious accidents resulting in big losses to life and the environment. It is therefore crucial for pipeline operators to reliably detect pipeline defects in an accurate and timely manner. Because of the size and complexity of pipeline systems, however, relying on human operators to perform the inspection is not possible. Automating the inspection process has been an important goal for the pipeline industry for a number of years. Significant progress has been made in that regard, and available techniques combine analytical modeling, numerical computations, and machine learning. This paper presents a survey of state-of-the-art methods used to assess the safety of the oil and gas pipelines. The paper explains the principles behind each method, highlights the setting where each method is most effective, and shows how several methods can be combined to achieve a higher level of accuracy.
管道系统是当今油气供应链的重要组成部分。尽管管道被认为是最安全的运输方式之一,但由于腐蚀和其他类型的缺陷,管道仍然容易发生故障。这种故障会导致严重的事故,给生命和环境造成巨大损失。因此,如何准确、及时、可靠地检测管道缺陷对管道操作人员来说至关重要。然而,由于管道系统的规模和复杂性,依靠人工操作人员进行检查是不可能的。多年来,自动化检测过程一直是管道行业的一个重要目标。在这方面已经取得了重大进展,现有的技术结合了分析建模、数值计算和机器学习。本文介绍了用于评估石油和天然气管道安全性的最新方法的调查。本文解释了每种方法背后的原理,强调了每种方法最有效的设置,并展示了如何将几种方法结合起来以达到更高的准确性。
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引用次数: 11
Energy price forecasting in the North Brazilian market using NN - ARIMA model and explanatory variables
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011847
J. C. R. Filho, C. Affonso, R. C. L. Oliveira
This paper proposes a new hybrid approach for short-term energy price prediction. This approach combines ARIMA and NN models in a cascaded structure and uses explanatory variables. A two step procedure is applied. In the first step, the explanatory variables are predicted. In the second one, the energy prices are forecasted by using the explanatory variables prediction. The prediction time horizon is 12 weeks-ahead and is applied to the North Brazilian submarket, which adopts a cost-based model with unique characteristics of price behavior. The proposed strategy is compared with traditional techniques like ARIMA and NN and the results show satisfactory accuracy and good ability to predict spikes. Thus, the model can be an attractive tool to mitigate risks in purchasing power.
本文提出了一种新的混合方法用于短期能源价格预测。这种方法在级联结构中结合了ARIMA和NN模型,并使用了解释变量。应用了两个步骤的过程。第一步,对解释变量进行预测。第二部分采用解释变量预测法对能源价格进行预测。预测时间范围为未来12周,并应用于北巴西子市场,该市场采用基于成本的模型,具有独特的价格行为特征。将该策略与传统的ARIMA和NN等技术进行了比较,结果表明该策略具有较好的精度和峰值预测能力。因此,该模型可以成为降低购买力风险的一种有吸引力的工具。
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引用次数: 4
Participatory learning in the neurofuzzy short-term load forecasting 参与式学习在神经模糊短期负荷预测中的应用
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011848
M. Hell, P. Costa, F. Gomide
This paper presents a new approach for short-term load forecasting using the participatory learning paradigm. Participatory learning paradigm is a new training procedure that follows the human learning mechanism adopting an acceptance mechanism to determine which observation is used based upon its compatibility with the current beliefs. Here, participatory learning is used to train a class of hybrid neuro-fuzzy network to forecast 24-h daily energy consumption series of an electrical operation unit located at the Southeast region of Brazil. Experimental results show that the neurofuzzy approach with participatory learning requires less computational effort, is more robust, and more efficient than alternative neural methods. The approach is particularly efficient when training data reflects anomalous load conditions or contains spurious measurements. Comparisons with alternative approaches suggested in the literature are also included to show the effectiveness of participatory learning.
本文提出了一种利用参与式学习范式进行短期负荷预测的新方法。参与式学习范式是一种新的训练过程,它遵循人类的学习机制,采用一种接受机制,根据观察结果与当前信念的兼容性来确定使用哪种观察结果。本文采用参与式学习对一类混合神经模糊网络进行训练,预测巴西东南地区某电力运行单元的24小时日能耗序列。实验结果表明,与其他神经方法相比,具有参与式学习的神经模糊方法所需的计算量更少,鲁棒性更强,效率更高。当训练数据反映异常负载条件或包含虚假测量时,该方法特别有效。与文献中建议的替代方法的比较也包括在内,以显示参与式学习的有效性。
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引用次数: 6
GA optimized time delayed feedback control of chaos in a memristor based chaotic circuit 遗传算法优化了基于忆阻器的混沌电路的混沌时滞反馈控制
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011834
S. Saini, J. Saini
Chaotic state of a nonlinear system may be harmful due to its extreme sensitivity to initial conditions and irregularity in behavior. This paper addresses the problem of controlling chaos in a memristor based chaotic circuit using time delayed feedback method. Genetic algorithm has been used as a search tool to optimize the feedback path gain. Extensive computer simulations demonstrate that successful chaos control can be achieved by using this scheme, leading the system's chaotic state towards a fixed point or sustained oscillations depending on the range of feedback gain values.
非线性系统的混沌状态由于其对初始条件的极端敏感性和行为的不规则性而可能是有害的。本文研究了用时滞反馈方法控制忆阻器混沌电路中的混沌问题。采用遗传算法作为搜索工具来优化反馈路径增益。大量的计算机模拟表明,使用该方案可以成功地实现混沌控制,使系统的混沌状态根据反馈增益值的范围走向固定点或持续振荡。
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引用次数: 5
A Multi-Population Genetic Algorithm to solve multi-objective remote switches allocation problem in distribution networks 一种求解配电网多目标远程交换机分配问题的多种群遗传算法
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011845
H. N. Alves, Railson Severiano de Sousa
This paper presents a Multi-Population Genetic Algorithm to solve the switches allocation problem in electric distribution networks considering remote and manual switches. In the procedure, reliability index, remote or manual controlled switch and investments costs are considered. The problem is formulated as a multi-objective optimization problem to be solved trough of weighted sum method. This method obtains the optimal solution considering a priori articulation of preferences established by the decision maker in terms of an aggregating function which combines individual objective values into a single utility value. A 282-bus test system is presented. The results confirm the efficiency of the proposed method which makes it promising to solve complex problems of switches placement in electric distribution feeders.
本文提出了一种多种群遗传算法来解决配电网中考虑远程和手动开关的开关分配问题。在此过程中,考虑了可靠性指标、遥控或手动控制开关和投资成本。将该问题表述为一个多目标优化问题,通过加权和法求解。该方法考虑决策者建立的偏好的先验表达,通过聚合函数将个体目标值组合成单个效用值,从而获得最优解。介绍了一种282总线测试系统。结果证实了该方法的有效性,为解决配电馈线中复杂的开关布置问题提供了良好的前景。
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引用次数: 7
Predicting the perforation capability of Kinetic Energy Projectiles using artificial neural networks 基于人工神经网络的动能弹丸射孔能力预测
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011842
John R. Auten, R. Hammell
The U.S. Army requires the evaluation of new weapon and vehicle systems through the use of experimental testing and Vulnerability/Lethality (V/L) modeling & simulation (M&S). The current M&S methods being utilized often require significant amounts of time and subject matter expertise. This typically means that quick results cannot be provided when needed to address new threats encountered in theater. Recently there has been an increased focus on rapid results for M&S efforts that can also provide accurate results. Accurately modeling the penetration and residual properties of a ballistic threat as it progresses through a target is an extremely important part of determining the effectiveness of the threat against that target. This paper presents preliminary results from the training of an artificial neural network for the prediction of perforation of a monolithic metallic target plate.
美国陆军要求通过使用实验测试和脆弱性/杀伤力(V/L)建模与仿真(M&S)对新武器和车辆系统进行评估。当前使用的M&S方法通常需要大量的时间和主题专业知识。这通常意味着,当需要解决战区遇到的新威胁时,无法提供快速的结果。最近,人们越来越关注M&S的快速结果,同时也能提供准确的结果。准确模拟弹道威胁穿透目标时的穿透和残余特性是确定对目标威胁有效性的极其重要的一部分。本文介绍了用于单片金属靶板穿孔预测的人工神经网络训练的初步结果。
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引用次数: 1
Video summarization based on Subclass Support Vector Data Description 基于子类支持向量数据描述的视频摘要
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011849
V. Mygdalis, Alexandros Iosifidis, A. Tefas, I. Pitas
In this paper, we describe a method for video summarization that operates on a video segment level. We formulate this problem as the one of automatic video segment selection based on a learning process that employs salient video segment paradigms. We design an hierarchical learning scheme that consists of two steps. At the first step, an unsupervised process is performed in order to determine salient video segment types. The second step is a supervised learning process that is performed for each of the salient video segment type independently. For the latter case, since only salient training examples are available, the problem is stated as an one-class classification problem. In order to take into account subclass information that may appear in the video segment types, we introduce a novel formulation of the Support Vector Data Description method that exploits subclass information in its optimization process. We evaluate the proposed approach in three Hollywood movies, where the performance of the proposed Subclass SVDD (SSVDD) algorithm is compared with that of related methods. Experimental results show that the adoption of both hierarchical learning and the proposed SSVDD method contribute to the final classification performance.
在本文中,我们描述了一种在视频片段级别上操作的视频摘要方法。我们将此问题表述为基于学习过程的自动视频片段选择问题,该过程采用了显著的视频片段范式。我们设计了一个由两个步骤组成的分层学习方案。在第一步,执行一个无监督的过程,以确定显著视频片段类型。第二步是一个监督学习过程,对每个突出的视频片段类型独立执行。对于后一种情况,由于只有显著的训练样例可用,因此将问题声明为单类分类问题。为了考虑视频片段类型中可能出现的子类信息,我们引入了一种新的支持向量数据描述方法,该方法在优化过程中利用了子类信息。我们在三部好莱坞电影中评估了所提出的方法,并将所提出的子类SVDD (SSVDD)算法与相关方法的性能进行了比较。实验结果表明,采用分层学习和所提出的SSVDD方法都有助于最终的分类性能。
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引用次数: 15
Application of hybrid incremental modeling for predicting surface roughness in micromachining processes 混合增量建模在微加工过程表面粗糙度预测中的应用
Pub Date : 2014-12-01 DOI: 10.1109/CIES.2014.7011831
F. Castaño, R. Haber, Raúl M. del Toro, Gerardo Beruvides
This paper presents the application of a hybrid incremental modeling strategy (HIM) for real-time estimation of surface roughness in micromachining processes. This strategy essentially consists of two steps. First, a representative hybrid incremental model of micromachining process is obtained. The final result of this model describes output as a function of two inputs (feed per tooth quadratic and vibration mean quadratic (rms) in the Z axis) and output (surface roughness Ra). Second, the hybrid incremental model is evaluated in real time for predicting the surface roughness. The model is experimentally tested by embedding the computational procedure in a real-time monitoring system of surface roughness. The prototype evaluation shows a success rate in the estimate of surface roughness about 80%. These results are the basement for developing a new generation of embedded systems for monitoring surface roughness of micro components in real time and the further exploitation of the monitoring system at industrial level.
本文介绍了一种混合增量建模策略(HIM)在微加工过程表面粗糙度实时估计中的应用。这个策略主要包括两个步骤。首先,建立了具有代表性的微加工过程混合增量模型。该模型的最终结果将输出描述为两个输入(Z轴上每齿进给二次元和振动平均二次元(rms))和输出(表面粗糙度Ra)的函数。其次,实时评估混合增量模型对表面粗糙度的预测效果。将计算过程嵌入到一个表面粗糙度实时监测系统中,对模型进行了实验验证。原型评估表明,估计表面粗糙度的成功率约为80%。这些结果为开发新一代微型部件表面粗糙度实时监测嵌入式系统和进一步在工业层面上的应用奠定了基础。
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引用次数: 5
期刊
2014 IEEE Symposium on Computational Intelligence for Engineering Solutions (CIES)
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