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2017 8th IEEE International Conference on Software Engineering and Service Science (ICSESS)最新文献

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Photovoltaic power forecasting based on Elman Neural Network software engineering method 基于Elman神经网络的光伏发电功率预测软件工程方法
Idris Khan, Honglu Zhu, Jianxi Yao, Danish Khan
Solar energy has the property of alternating, fluctuation and periodicity, and it has severe impact on large scale photovoltaic (PV) grid-connected generation. This turn power utilities contrary to use PV power since the forecasting and overall assessment of the grid becomes very difficult. To develop a reliable algorithm that can minimize the errors associated with forecasting the nearby future PV power generation is particularly helpful for efficiently integration into the grid. PV power prediction can play a significant role in undertaking these challenges. This paper presents 3 days ahead power output forecasting of a PV system using a Theoretical Solar radiation and Elman Neural Network (ENN) software engineering technique by including the relations of PV power with solar radiation, temperature, humidity, and wind speed data. In the proposed method, the ENN is applied to have a significant effect on random PV power time-series data, and tackle the nonlinear fluctuations in a better approach.
太阳能具有交变、波动和周期性的特性,对大规模光伏并网发电产生了严重的影响。这反过来使得电力公司由于使用光伏发电而对电网进行预测和整体评估变得非常困难。开发一种可靠的算法,使预测近期光伏发电的误差最小化,对有效地并网尤为有帮助。光伏发电预测可以在应对这些挑战方面发挥重要作用。本文利用理论太阳辐射和Elman神经网络(ENN)软件工程技术,结合光伏发电功率与太阳辐射、温度、湿度和风速的关系,对光伏发电系统3天前的功率输出进行了预测。在该方法中,新能源网络对随机PV功率时间序列数据具有显著的影响,可以更好地处理非线性波动。
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引用次数: 25
Applying H-index within 5-year citations window 在5年引文窗口内应用h指数
Chuanqi Wang, Yanhui Li
There are a number of indexes proposed in many studies to evaluate the quality of journals. Among them, H-index is a recently proposed index as a useful supplement to journal impact factor. However, current H-index is based on long journal history. Immediate changes of citations of journals are often ignored by H-index. In this paper, we propose 5-year H-index to solve this problem. 5-year H-index evaluates the immediate citation performance (in this year) of a journal's papers published in the last 5 years. We can measure journals by the recent citations with 5-year H-index, which can be a new way to determine the value of journals.
在许多研究中提出了许多评价期刊质量的指标。其中,h指数是最近提出的对期刊影响因子进行有益补充的指标。然而,目前的h指数是基于长期的期刊历史。期刊被引用的即时变化常常被h指数忽略。本文提出了5年h指数来解决这一问题。5年h指数(5- 5 h index)是对期刊近5年发表的论文在本年度的直接被引表现进行评价。利用最近5年的被引次数和h指数来衡量期刊的价值,为期刊价值的确定提供了一种新的途径。
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引用次数: 0
A self-adaptation framework for dealing with the complexities of software changes 用于处理软件变更复杂性的自适应框架
Jiewen Wan, Qingshan Li, Lu Wang, Liu He, Yvjie Li
Software Self-adaption (SA) is a promising technology to reduce the cost of software maintenance. However, the complexities of software changes such as various and producing different effects, interrelated and occurring in an unpredictable context challenge the SA. The current methods may be insufficient to provide the required self-adaptation abilities to handle all the existent complexities of changes. Thus, this paper presents a self-adaptation framework which can provide a multi-agent system for self-adaptation control to equip software system with the required adaptation abilities. we employ the hybrid control mode and construct a two-layer MAPE control structure to deal with changes hierarchically. Multi-Objective Evolutionary Algorithm and Reinforcement Learning are applied to plan an adequate strategy for these changes. Finally, in order to validate the framework, we exemplify these ideas with a meta-Search system and confirm the required self-adaptive ability.
软件自适应(SA)是一种很有前途的降低软件维护成本的技术。然而,软件变更的复杂性,例如各种各样的、产生不同的影响,相互关联的、发生在不可预测的上下文中,对SA提出了挑战。目前的方法可能不足以提供所需的自适应能力来处理所有存在的复杂变化。因此,本文提出了一种自适应框架,该框架可以提供多智能体系统进行自适应控制,使软件系统具备所需的自适应能力。我们采用混合控制模式,构造了一个两层MAPE控制结构来分层处理变化。应用多目标进化算法和强化学习来规划适当的策略来应对这些变化。最后,为了验证该框架,我们用一个元搜索系统举例说明了这些想法,并确认了所需的自适应能力。
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引用次数: 3
Why Kad's routing table has hundreds of peers 为什么Kad的路由表有数百个节点
Qiang Li, Hui Li, Zhongling Wen, Pengfei Yuan
Kad is the most popular P2P file sharing system. Previous works only focus on the global peers' collection or monitoring the lookup traffic. Based on our online measurement, we find that each benign peer's routing table only has 400–600 peers. We further study the Kad's source codes and track the routing table's change process. And finally, we explain that the unique Kad routing table's structure and the total online peer number lead to this result. We also do the large-scale experiment to prove our conclusion.
Kad是最流行的P2P文件共享系统。以前的工作只关注全局对等节点的收集或监视查找流量。通过在线测量,我们发现每个良性对等体的路由表只有400-600个对等体。我们进一步研究了Kad的源代码,并跟踪路由表的变化过程。最后,我们解释了唯一的Kad路由表结构和在线对等体总数导致了这一结果。我们还做了大规模的实验来证明我们的结论。
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引用次数: 0
An approach to classify flue-cured tobacco leaves using deep convolutional neural networks 基于深度卷积神经网络的烤烟烟叶分类方法
Somesh Katta, M. Babu
Convolutional Neural Network (CNN) is a Multi-Layer Perceptron Neural Network (MLP), specially designed for classification and identification of image data. MLPs are very useful but very slow for learning image features. Even for small images MLPs takes a lot of time to learn the features. On contrary, Convnets detects the features locally and propagate them to the neighboring layer so that the learning process is easier and efficient. Image reduction is a process normally used to reduce the number of learning parameters. The present paper is aimed at designing a new technique to convolve the input image, using Deep CNN algorithm and then reduce the image dimension by pooling techniques. The new technique is applied for image classification of flue-cured tobacco leaves. About 120 samples of cured tobacco leaves are taken for training the CNN and reduced the image dimensions from 1450×1680 to 256×256 RGB. Here four hidden layer CNN is considered and performed convolution and pooling on input images with sixteen, thirty two and sixty four feature kernels on first three hidden layers and fourth layer is connected to output layer. Max pooling technique is used in the model and classified them into three major classes' class-1, class-2 and class-3 with a global efficiency of 85.10% on the test set consisting about fifteen images of each group. Results from the proposed model are compared with other existing models and shown that the model performs better even with small training set.
卷积神经网络(Convolutional Neural Network, CNN)是一种多层感知器神经网络(multilayer Perceptron Neural Network, MLP),专门用于图像数据的分类和识别。mlp非常有用,但在学习图像特征时速度很慢。即使对于小图像,mlp也需要花费大量时间来学习特征。相反,Convnets在局部检测特征并将其传播到邻近层,从而使学习过程更容易和高效。图像约简通常用于减少学习参数的数量。本文旨在设计一种新的技术,利用深度CNN算法对输入图像进行卷积,然后通过池化技术降低图像维数。将该方法应用于烤烟叶片图像分类。选取约120个烤烟叶样本进行CNN训练,并将图像维数从1450×1680降至256×256 RGB。这里考虑四隐层CNN,在前三隐层分别用16、32和64个特征核对输入图像进行卷积和池化,第四层连接到输出层。模型采用最大池化技术,在每组约15张图像的测试集上,将其分为1类、2类和3类三大类,整体效率为85.10%。将该模型与已有模型进行了比较,结果表明,即使在较小的训练集下,该模型也具有较好的性能。
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引用次数: 2
A template matching algorithm for high precision positioning 高精度定位的模板匹配算法
Wei Hu, Bo Wang
We propose a novel method for template matching in unconstrained environments. The essence of it is the Multiple Information Matching (MSCE) which combines SSDA, CLD, EHD, a variety of algorithms, a useful, robust and parameter-free similarity measure between two sets of points. Since the SSDA algorithm was easy to influence the image noise and illumination, CLD and EHD are added to make the matching more accurate. Experimental results show that MSCE algorithm is more accurate in matching position.
提出了一种新的无约束环境下的模板匹配方法。它的本质是多信息匹配(MSCE),它结合了SSDA、CLD、EHD等多种算法,是一种有用的、鲁棒的、无参数的两组点之间的相似性度量。由于SSDA算法容易影响图像噪声和光照,为了使匹配更加准确,加入了CLD和EHD。实验结果表明,MSCE算法在匹配位置上具有更高的精度。
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引用次数: 2
A correct method based on retinex for the solar image with uneven illumination 光照不均匀太阳像的一种基于视点的正确方法
Hongjuan Yang, Kaifan Ji, Yunfei Yang, W. Duan, H. Deng, Bo Liang
The traditional mask method and background fitting method can not correct effectively the solar image with uneven illumination. We adopt a correct method based on Retinex for the solar image with uneven illumination. The quality of image is improved by compressing the range of brightness and increasing the contrast by separately processing the effect of illumination and reflectivity to the intensity value. It could reveal the detailed character of the shadow area of the image. By contrasting four evaluate indexes, including the mean intensity, the image entropy, the image contrast and the peak signal to noise ratio (PSNR), this method is proved to be effective in the solar image with uneven illumination.
传统的掩模法和背景拟合方法不能有效地校正光照不均匀的太阳图像。针对光照不均匀的太阳图像,采用了一种基于Retinex的正确方法。通过分别处理照度和反射率对亮度值的影响,压缩亮度范围,提高对比度,从而改善图像质量。它可以揭示图像阴影区域的细节特征。通过对平均强度、图像熵、图像对比度和峰值信噪比(PSNR) 4个评价指标的对比,证明了该方法在光照不均匀的太阳图像中是有效的。
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引用次数: 0
Utilizing cluster quality in hierarchical clustering for analogy-based software effort estimation 利用分层聚类中的聚类质量进行基于类比的软件工作量估计
Jack H. C. Wu, J. Keung
Analogy-based software effort estimation is one of the most popular estimation methods. It is built upon the principle of case-based reasoning (CBR) based on the k-th similar projects completed in the past. Therefore the determination of the k value is crucial to the prediction performance. Various research have been carried out to use a single and fixed k value for experiments, and it is known that dynamically allocated k values in an experiment will produce the optimized performance. This paper proposes an interesting technique based on hierarchical clustering to produce a range for k through various cluster quality criteria. We find that complete linkage clustering is more suitable for large datasets while single linkage clustering is suitable for small datasets. The method searches for optimized k values based on the proposed heuristic optimization technique, which have the advantages of easy computation and optimized for the dataset being investigated. Datasets from the PROMISE repository have been used to evaluate the proposed technique. The results of the experiments show that the proposed method is able to determine an optimized set of k values for analogy-based prediction, and to give estimates that outperformed traditional models based on a fixed k value. The implication is significant in that the analogy-based model will be optimized according the dataset being used, without the need to ask an expert to determining a single, fixed k value.
基于类比的软件工作量估算是最流行的估算方法之一。它建立在基于案例推理(CBR)的原则之上,基于过去完成的第k个类似项目。因此,k值的确定对预测性能至关重要。已经进行了各种研究,使用单一固定的k值进行实验,并且已知在实验中动态分配k值将产生最佳性能。本文提出了一种基于分层聚类的有趣技术,通过各种聚类质量标准来产生k的范围。我们发现完全链接聚类更适合于大数据集,而单链接聚类更适合于小数据集。该方法在提出的启发式优化技术的基础上搜索最优k值,具有计算简单、针对所研究的数据集进行优化的优点。已经使用PROMISE存储库中的数据集来评估所建议的技术。实验结果表明,该方法能够为基于类比的预测确定一组优化的k值,并给出优于基于固定k值的传统模型的估计。这意味着基于类比的模型将根据所使用的数据集进行优化,而不需要请专家确定单个固定的k值。
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引用次数: 1
The virtual maintenance process modeling method for performance assessment 性能评估的虚拟维修过程建模方法
Pang Jiazhen, Li Na, Hou Xiaohui
It is of great significance to reduce the cost and improve the product quality by using virtual verification platform to evaluate the performance of aircraft maintenance process. A virtual maintenance process modeling method is proposed for the qualitative and quantitative evaluation of ergonomics in virtual environment. Firstly, the definition of virtual maintenance scene is given, and the essential elements of virtual environment analysis are defined. Then, considering the needs of process validation and simulation analysis which are two aspects of the maintenance work, sets up “maintenance tasks — typical operation — typical action” three-layer work element decomposition model, and gives the definition of information and organization methods of various elements. Secondly, the performance evaluation process of virtual maintenance based on typical work elements is established. Finally, the effectiveness of the proposed method is verified by an example of aircraft landing gear tire maintenance.
利用虚拟验证平台对飞机维修过程进行性能评估,对降低成本、提高产品质量具有重要意义。针对虚拟环境下人机工程的定性和定量评价,提出了一种虚拟维修过程建模方法。首先,给出了虚拟维护场景的定义,定义了虚拟环境分析的基本要素。然后,考虑维修工作过程验证和仿真分析两个方面的需求,建立了“维修任务-典型操作-典型动作”三层工作元素分解模型,给出了各元素的信息定义和组织方法。其次,建立了基于典型工作要素的虚拟维修性能评价流程;最后,以飞机起落架轮胎维修为例,验证了该方法的有效性。
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引用次数: 1
A face tracking framework based on convolutional neural networks and Kalman filter 基于卷积神经网络和卡尔曼滤波的人脸跟踪框架
Zihan Ren, Shuangyuan Yang, F. Zou, Fan Yang, Chaoyang Luan, Kai Li
This paper presents a method for real-time detection and tracking of the human face. The proposed method combines the Convolution Neural Network detection and the Kalman Filter tracking. Convolution Neural Network is used to detect face in video, which is more accurate than traditional detection method. When the face is largely deflected or severely occluded, Kalman Filter tracking is utilized to predict the face position. The objective is to increase the face detection rate, while meet the real time requirements. Our method is implemented based on Caffe framework. The experimental results show that our method achieves superior accuracy over the existing techniques and keeps real time performance.
本文提出了一种实时检测和跟踪人脸的方法。该方法将卷积神经网络检测与卡尔曼滤波跟踪相结合。利用卷积神经网络对视频中的人脸进行检测,比传统的人脸检测方法准确率更高。当人脸严重偏转或遮挡时,利用卡尔曼滤波跟踪预测人脸位置。目的是在满足实时性要求的同时,提高人脸检测率。我们的方法是基于Caffe框架实现的。实验结果表明,该方法具有较好的精度和实时性。
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引用次数: 13
期刊
2017 8th IEEE International Conference on Software Engineering and Service Science (ICSESS)
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