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2017 International Conference on Computing Intelligence and Information System (CIIS)最新文献

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An Improved Track-before-Detection Algorithm Based on Dynamic Neighborhood Search 一种改进的基于动态邻域搜索的检测前跟踪算法
Rui Ni, C. Fan, Xiaotao Huang, Hanhua Zhang
Track-Before-Detection (TBD) technology can effectively improve the detection and track performance of weak targets by exchanging energy through time. However, the target with glint effect and angular noise is easy to disappear in more than one of frames. To solve this problem, this paper proposes an improved TBD algorithm based on dynamic neighborhood search. It uses the dynamic neighborhood to keep tracking targets, which needs less computational load than the traditional TBD algorithm. The algorithm is validated by simulation scenes with real target data. The results show that this proposed algorithm can improve the performance of tracking weak targets at a low Signal to Noise Ratio (SNR) about -5dB and it can effectively detect and track those targets with glint effect and angular noise.
探测前跟踪(TBD)技术通过能量随时间的交换,可以有效地提高弱目标的探测和跟踪性能。然而,具有闪烁效应和角噪声的目标容易在多个帧中消失。为了解决这一问题,本文提出了一种改进的基于动态邻域搜索的TBD算法。该算法利用动态邻域对目标进行跟踪,与传统的TBD算法相比,计算量更小。通过具有真实目标数据的仿真场景对算法进行了验证。实验结果表明,该算法能在-5dB左右的低信噪比下提高弱目标的跟踪性能,并能有效地检测和跟踪具有闪烁效应和角噪声的目标。
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引用次数: 1
Forecasting the Stock Price Volatilities by Integratingthe Support Vector Regression and the Krill Herd Algorithm 基于支持向量回归和Krill羊群算法的股票价格波动预测
Chih-Chen Hsu
The derivatives which have the property of the high leverage have become popular tools for investing in the era with a low interest rate. Among these derivatives, the options are considered a simpler way for investing since the Black-Scholes (B-S) pricing model can be used to estimate their reasonable prices. However, the parameter "volatility ± in the B-S model cannot be known in advance and needs be guessed based on the historical trading information regarding the options or the underlying assets. Hence, the problems of forecasting future volatilities had become an interesting and attractive research topic for both researchers and practioners. Among the previous researches, the artificial intelligent techniques had been extensively used and acquired satisfactory results. Therefore, the support vector regression (SVR) technique and krill herd (KH) optimization algorithm are utilized to develop an integrated approach for forecasting the volatilities more accurately in this study. The proposed approach is demonstrated by a case study aiming at forecasting the volatilities of the Taiwan Stock Exchange Capitalization Weighted Stock Index (TAIEX) to verify its feasibility and effectiveness. According to the experimental results, the proposed integrated forecasting methodology can produce better forecasting performance, based on the RMSE, R2 or MAPE, than the forecasting models which are built solely based on the SVR. Therefore, it can conclude that the proposed integrated approach can really indeed improve the forecasting, and can be considered an effective and useful assistant tool for an investor to obtain more accurate estimation for the volatility thus helping his/her decision making.
在低利率时代,金融衍生品以其高杠杆的特性成为流行的投资工具。在这些衍生品中,期权被认为是一种更简单的投资方式,因为布莱克-斯科尔斯(B-S)定价模型可以用来估计它们的合理价格。但是,B-S模型中的参数“波动率±”是无法提前知道的,需要根据期权或标的资产的历史交易信息进行猜测。因此,预测未来波动率的问题已成为研究人员和从业人员感兴趣和有吸引力的研究课题。在以往的研究中,人工智能技术得到了广泛的应用,并取得了令人满意的效果。因此,本研究利用支持向量回归(SVR)技术和磷虾群(KH)优化算法,建立了一种更准确预测波动性的综合方法。最后,以台湾证券交易所加权股票指数(TAIEX)的波动率预测为例,验证该方法的可行性与有效性。实验结果表明,基于RMSE、R2或MAPE的综合预测方法比单独基于SVR构建的预测模型具有更好的预测效果。综上所述,本文提出的综合预测方法确实能够提高预测水平,是投资者获得更准确的波动率估计从而帮助其决策的有效而有用的辅助工具。
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引用次数: 1
A Bi-criterion Simulated Annealing Method to Solve Four-Stage Multiprocessor Open Shops with Dynamic Job Release Time 具有动态作业释放时间的四阶段多处理机开放车间的双准则模拟退火方法
Yachih Tsai Huimei Wang, F. Chou
The scheduling of chip sorting operation of LED manufacturing can be treated as a four-stage multiprocessor open shop problem, where each lot (job) with release time have four operations to be processed on a set of processing stages without predetermined necessary route. Each stage has one and more identical sorting machines. For the problem, we considered two objectives of minimizing makespan and total weighted tardiness simultaneously and proposed two simulated annealing (SA) methods to find out near pareto-optimal solutions. A series of computational experiments are conducted to evaluate the performance of the proposed SAs in comparison with exact solutions on various small-size problem instances. For large problems, the proposed SAs are also compared. The results show that performance of the SA1 algorithm was better than the SA2 whatever the test problems are small-size or large-size.
LED制造中芯片分拣作业的调度可以看作是一个四阶段多处理器开放车间问题,每个有放行时间的批次(作业)在一组加工阶段上有四道工序需要加工,没有预先确定的必要路线。每个阶段都有一台或多台相同的分拣机器。针对该问题,我们同时考虑最大完工时间和总加权延迟两个目标,并提出了两种模拟退火(SA)方法来寻找近帕累托最优解。通过一系列的计算实验,将所提出的sa与精确解在各种小尺寸问题实例上的性能进行了比较。对于较大的问题,还比较了所提出的sa。结果表明,无论测试问题是大规模还是小规模,SA1算法的性能都优于SA2算法。
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引用次数: 4
Solving the Stock Preparing Problem in Return Materials Authorization Process in TFT-LCD Industry with MTD-based Grey Model 基于mtd的灰色模型求解TFT-LCD行业退货授权过程中的备货问题
Chun-Pei Yeh, Tu-hsin Tsai, Che-Wei Chang, I-Hsiang Wen
Though quality control is implemented at manufacturing side, it is still unavoidable to ship defective products not detected to the customers. When defective products are detected at customer side, the product returning processes will correspondingly activate. However, it leads to the increase of operating costs that manufacturer side should make a certain amount of stock to solve the situation of returning products. Accordingly, the tradeoff is between over-stock and under-stock to balance the cost-cutting and customer satisfaction. The grey models (GMs) are widely applied in short-term time series data prediction; though, the improvement of prediction still exists. Hence, this research reveals a new GM, which employs the mega-trend-diffusion technique, to estimate the background values in the traditional GM. A case is studied from a leading TFT-LCD company in Taiwan. Comparing with two GM models, the proposed model outperformed concerning the case data.
虽然在制造方面实施了质量控制,但将未检测到的次品运送给客户仍然是不可避免的。当在客户端检测到不良产品时,产品退回程序将相应启动。但是,制造商需要制造一定数量的库存来解决退货的情况,这会导致运营成本的增加。因此,在库存过剩和库存不足之间进行权衡,以平衡成本削减和客户满意度。灰色模型在短期时间序列数据预测中有着广泛的应用;尽管如此,预测的改进仍然存在。因此,本研究提出一种新的通用模型,利用大趋势扩散技术来估计传统通用模型中的背景值。本研究以台湾一家领先的TFT-LCD公司为例。通过与两种GM模型的比较,该模型在实例数据方面表现出较好的优越性。
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引用次数: 0
A Formation-Constrained Cooperative Path Planning Method for Multi-autonomous Underwater Vehicles 多自主水下航行器编队约束协同路径规划方法
Shuangshuang Du, C. Cai, Houjun Wang, Dongwu Li
A novel path planning method based on particle swarm optimization (PSO) is proposed to achieve cooperative formation cruise for multi-autonomous underwater vehicles (AUV). In particular, inspired by the virtual structure approach, particle in PSO is defined as a set of cooperative routes. These routes are composed by a series of navigation points including the initial points and the target points of corresponding vehicles. Given these navigation points, the optimization can be carried out in the search space described by vectors. By designing a reasonable cost function and a particle updating strategy, the method successfully coordinates the time and space of vehicles before vehicles arrived the formation-constrained positions, and simultaneously, preserves the formation constraint and avoids obstacles during the navigation, which provides a new perspective to address the cooperative path planning problem with a formation constraint. The feasibility and effectiveness of the proposed method are validated by experiments.
针对多自主水下航行器协同编队巡航问题,提出了一种基于粒子群优化的路径规划方法。特别地,受虚拟结构方法的启发,粒子群中的粒子被定义为一组合作路线。这些路线由一系列导航点组成,包括初始点和相应车辆的目标点。给定这些导航点,就可以在向量描述的搜索空间中进行优化。该方法通过设计合理的代价函数和粒子更新策略,成功地协调了车辆在到达编队约束位置之前的时间和空间,同时在导航过程中保持编队约束并避开障碍物,为解决编队约束下的协同路径规划问题提供了新的视角。通过实验验证了该方法的可行性和有效性。
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引用次数: 0
Causally and Noncausally Information Bound in Discrete Memoryless Multicast Relay Network 离散无记忆组播中继网络中的因果和非因果信息绑定
Ou Wang, Dajin Wang, Jie Shen, Jianguo Yu
The problem of relay channel (RC) with noncausal channel state information (CSI) available at the relay is considered. With the CSI, the relay can help communication in two ways: 1) by relaying message information; 2) by conveying the CSI to help the destination decode. In previous work, Zaidi et al. established a lower bound by letting the relay send message information by performing Gelfand-Pinsker (GP) coding. While in our schemes, we combine the two ways by letting the relay send message information as well as the compressed CSI to the receivers. We investigate three decodeforward (DF) lower bounds. The first two bounds are obtained by transmitting the message information and the CSI directly. We find this scheme is surprisingly equivalent to Zaidi's. The third bound is established by exploiting a new coding scheme. We show that the third bound is tighter than others. We show our optimal scheme for a class of deterministic SD-RC and give the capacity. We also generalize RC to discrete memoryless multicast network (DM-MN). We characterize the DF lower bound for DM-MN with noncausal CSI only at the relay nodes.
研究了在中继处具有非因果信道状态信息的中继信道问题。有了CSI,中继可以通过两种方式帮助通信:1)通过中继消息信息;2)通过传递CSI来帮助目的地解码。在之前的工作中,Zaidi等人通过GP (Gelfand-Pinsker)编码让中继发送消息信息,从而建立了下界。而在我们的方案中,我们将两种方式结合起来,让中继发送消息信息以及压缩的CSI给接收器。我们研究了三个解向(DF)下界。前两个边界是通过直接传输消息信息和CSI得到的。我们发现这个方案与Zaidi的方案惊人地相同。第三界是利用一种新的编码方案建立的。我们证明了第三界比其他界更紧。给出了一类确定性SD-RC的最优方案,并给出了容量。我们也将RC推广到离散无记忆组播网络(DM-MN)。我们仅在中继节点上表征了具有非因果CSI的DM-MN的DF下界。
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引用次数: 0
Template Based Attribute Value Words Acquisition in Entity Attribute Knowledge Base Construction 实体属性知识库构建中基于模板的属性值词获取
Honglin Wu, Ruo-yi Zhou, Ke Wang
In the task of entity attribute knowledge base construction, each attribute has many candidate value words. It is impossible to get these candidate value words manually. This paper proposed a template based attribute value words acquisition method, which could acquire the candidate value words of attribute from real corpus automatically. The acquisition of candidate value words were driven by attribute. The candidate value words could be obtained in the context which described the attribute. The expression of a particular text generally had a fixed form. The form could be extracted as a template for the acquisition of candidate value words of attribute. This paper gave the definition of the template and proposed an automatic template generating method. Based on the templates, this paper proposed a procedure of attribute value words acquisition which was constrained by the known attribute words. It extracted attribute value words from annotated corpus by the method of the template instantiation. According to the relationship between attribute word and attribute value word in the template, the relation-net of attribute words and attribute value words could be organized directly. The experimental result showed that the proposed method performance well on the real corpus.
在实体属性知识库构建任务中,每个属性都有多个候选值词。人工获取这些候选值词是不可能的。提出了一种基于模板的属性值词获取方法,该方法可以自动从真实语料库中获取属性候选值词。候选值词的获取是由属性驱动的。候选值词可以在描述属性的上下文中获得。特定文本的表达通常有固定的形式。该表单可以作为模板提取,用于获取候选属性值词。给出了模板的定义,提出了一种自动生成模板的方法。在模板的基础上,提出了一种受已知属性词约束的属性值词获取过程。采用模板实例化的方法从标注语料库中提取属性值词。根据模板中属性词和属性值词的关系,可以直接组织属性词和属性值词的关系网络。实验结果表明,该方法在真实语料库上具有良好的性能。
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引用次数: 6
The Prediction Aggregating Procedure for Multi-models In Small Dataset Learning 小数据集学习中多模型的预测聚合过程
Yao-San Lin, Liang-Sian Lin, Der-Chiang Li, Hung-Yu Chen
In the past few decades, there were quite a few learning algorithms developed to extract knowledge from data. However, none of the single algorithms can be applicable to learn all the datasets with favor results because data patterns may represent linear and non-linear. Accordingly, the idea of aggregating the predictions of multiple learning models to improve the forecasting accuracy of a single method was proposed. Nevertheless, how to improve the accuracy of the aggregated predictions when learning small datasets is the objective of this study. Based on the distributions of the predictive errors of learning models, the proposed method learns the weights of the models and then tries to aggregate more precise predictions with the weights. The experiment results show the forecasting errors of the predictions aggregated by the proposed method are significantly lower than the predictions of single models and the averaged predictions.
在过去的几十年里,有相当多的学习算法被开发出来从数据中提取知识。然而,没有一个单一的算法可以适用于学习所有的数据集,因为数据模式可能表示线性和非线性。据此,提出了将多个学习模型的预测结果进行汇总以提高单一方法预测精度的思路。然而,如何在学习小数据集时提高聚合预测的准确性是本研究的目的。该方法根据学习模型的预测误差分布,学习模型的权重,然后尝试用这些权重聚合更精确的预测。实验结果表明,该方法的预测误差明显低于单一模型的预测和平均预测。
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引用次数: 0
A MRF-based Multi-agent System for Remote Sensing Image Segmentation 基于mrf的遥感图像分割多智能体系统
Huifang Bao, Linli Zhou, Lei Liu, Yue Wu
Remote sensing is a technology for remote real-time monitoring surface information, remote sensing images are valuable in civil and military applications. In this paper, aiming at the design of remote sensing image segmentation algorithm, we propose a remote sensing image segmentation method based on multi-agent and MRF. The proposed method extracts and fuses the intensity, texture, edges, and the spatial information in collaboration and parallization, and it provides theoretical and technical support for remote sensing image segmentation task.
遥感是一种对地表信息进行远程实时监测的技术,遥感图像在民用和军事上都有重要的应用价值。本文针对遥感图像分割算法的设计,提出了一种基于多智能体和MRF的遥感图像分割方法。该方法对图像的强度、纹理、边缘和空间信息进行协同、并行提取和融合,为遥感图像分割任务提供理论和技术支持。
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引用次数: 3
Distributed Resource Scheduling Algorithm Based on Hybrid Genetic Algorithm 基于混合遗传算法的分布式资源调度算法
Sen Pan, Junfeng Qiao, Jing Jiang, Jin Huang, Liping Zhang
With the development of wide area distributed computing, how to efficiently and reasonably arrange all kinds of resources in the whole computing environment has become an important research direction. Traditional resource scheduling methods do not consider the impact of task priority on resource scheduling. In order to solve this problem, this paper proposes a distributed resource scheduling algorithm based on hybrid genetic algorithm. The simulation results show that compared with the traditional algorithm, the proposed algorithm has a great advantage in the average number of convergence, resource utilization, average time consuming and the total completion time of tasks.
随着广域分布式计算的发展,如何在整个计算环境中高效、合理地安排各种资源已成为一个重要的研究方向。传统的资源调度方法没有考虑任务优先级对资源调度的影响。为了解决这一问题,本文提出了一种基于混合遗传算法的分布式资源调度算法。仿真结果表明,与传统算法相比,本文提出的算法在平均收敛次数、资源利用率、平均耗时和任务总完成时间等方面具有很大的优势。
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引用次数: 5
期刊
2017 International Conference on Computing Intelligence and Information System (CIIS)
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