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Poisson过程

Poisson过程的相关文献在1989年到2022年内共计190篇,主要集中在财政、金融、经济计划与管理、自动化技术、计算机技术 等领域,其中期刊论文187篇、会议论文3篇、专利文献74677篇;相关期刊144种,包括云南民族大学学报(自然科学版)、鲁东大学学报(自然科学版)、中南民族大学学报(自然科学版)等; 相关会议3种,包括中国现场统计研究会第十三届学术年会、第二届中国Rough集与软计算学术研讨会、中国电机工程学会电力设备状态检修研讨会等;Poisson过程的相关文献由346位作者贡献,包括王后春、陈新美、李学锋等。

Poisson过程—发文量

期刊论文>

论文:187 占比:0.25%

会议论文>

论文:3 占比:0.00%

专利文献>

论文:74677 占比:99.75%

总计:74867篇

Poisson过程—发文趋势图

Poisson过程

-研究学者

  • 王后春
  • 陈新美
  • 李学锋
  • 王军
  • 王贵红
  • 赵金娥
  • 张燕
  • 杜雪樵
  • 王洪霞
  • 王献东
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 吴苍; 司书宾
    • 摘要: 多元离散数据常见于产品缺陷监测和流行疾病监控等环节。传统的多元控制图假设变量服从正态分布或假设各维度的变量相互独立,难以满足监控需求,因此针对多元离散数据的控制图设计一直是统计过程控制领域的热点问题。以三元Poisson过程为研究对象,引入单一参数的copula函数描述其空间相关性,基于对数似然比方法构建一种相匹配的多元CUSUM控制图。采用马尔科夫链法近似计算平均运行链长,验证控制图分别在不同的相关强度和均值变化水平下的性能,并与D控制图进行比较。仿真结果表明,该控制图能有效监控三元Poisson过程中的均值漂移,并且目标偏移量与实际偏移量接近时会获得更好的监控效果。当数据间相关性较强时,该控制图的监控性能优于D控制图。
    • 覃利华
    • 摘要: 本文在保费收入为复合Poisson过程,索赔次数{N1(t),t≥0},退保次数{N2(t),t≥0}和支付红利的保单数{N3(t),t≥0}分别是保单到达数{M(t),t≥0}的p1,p2,p3-稀疏过程的假定下,建立带有干扰的风险模型,运用鞅方法讨论该模型盈余过程的性质,给出其最终破产概率的表达式和Lundberg上界,并给出具体实例.
    • 张笑怡1; 郭军义1
    • 摘要: 本文研究了在通货膨胀环境下关于累积阶段的固定缴费(de?ned contribution,DC)养老金的一个均值-方差问题.一般来说,DC养老金的管理周期比较长,所以,本文考虑了养老金的实际财富过程,而非名义财富过程,并且假设价格指数的动态过程包含一个跳-扩散过程.通过投资金融市场上的三种产品(无风险银行账户、通胀指数债券和风险资产),该DC养老金最优管理的目标是在给定期望的前提下最小化终端时间的方差.风险资产同样包含一个跳-扩散过程.通过解相关的Hamilton-Jacobi-Bellman(HJB)方程,本文得到了最优的投资策略以及相关的有效前沿的显式表达.
    • 李大伟; 方勇; 孙兴
    • 摘要: 为了掌握维护条件下产品寿命分布规律,进一步解释其失效特性,从维护条件下产品性能状态变化角度出发,结合累积失效理论,利用复合Poisson过程建立了可靠性模型,得到了该条件下产品在线寿命分布模型.在此基础上,建立了维护条件下产品总体寿命分布模型,并利用偏度-峰度系数和贴近度分析,对维护条件下产品在线寿命分布和总体寿命分布规律进行了数值计算,解释了工程产品在线往往具有集中失效,而总体又具有随机失效的特性.以水泵转子为研究对象,通过数值分析,较好地描述了其定期维护条件下的可靠度和寿命分布,进一步验证了模型的可行性.%Considering the characteristics of performance deterioration,the reliability model is established from the cumulating failure mechanism by compound Poisson process. So it can get the life distribution rule for product on servicing and explain the failure characteristics. The on-line life distribution model is also built. On the basis of it, the collectivity life distribution model is developed. Through the number analysis of skewness-kurtosis and nearness, the on-line life distribution of product on servicing is approximately normal distribution, and the collectivity life distribution of product on servicing is approximatelyexponential distribution. So it explains the characteristics of centralized-failure and random-failure. Finally,it can describe the reliability and life distribution of water rotor on scheduled servicing byabove models.The applicability and accuracyof models are shown.
    • 朱珏钰; 曹亚微; 周书仁; 李峰
    • 摘要: The human pose estimation system which uses the random forest as classifier has a problem about taking up too big memory footprint, so this paper puts forward an optimization random forest model to solve the problem above. The new model introduces the Poisson process and combines it with the depth information to form a filter before Bootstrap sampling, and then filter the original training dataset, moving the pixel sample which not plays a positive role away. After that the goal of refactor the training dataset is achieved. So the insufficient about repeated sampling and the weak represen-tative of random forest can be improved. And the experimental results show this optimization is effective, reducing the time and space complexity of the system greatly, and makes the system more general.%针对以随机森林为分类器的人体姿态估计系统内存占用过大的问题,提出一种优化的随机森林模型,该模型在进行Bootstrap抽样前,引入Poisson过程并将其与深度信息相融合组建一个滤过网对原始训练数据集进行过滤,将一部分对后续分类起到非积极作用的特征样本点滤除,使训练数据集得到优化重构,进而较好地弥补随机森林在抽样过程中重复抽样以及重抽样样本代表性不强的缺点。实验结果表明了该优化模型的有效性,大大降低了系统的时间、空间复杂度,使得系统的适用性更强。
    • 殷月竹; 殷志祥; 许峰
    • 摘要: 针对目前我国城市中公共停车场的"停车难"、" 停车乱"的问题,研究如何科学地规划建设城市公共停车场,从而为解决城市停车问题提供理论和实践依据.运用排队论和Poisson过程对公共停车场的停车情况进行分析,并建立具体的模型.通过对实例的计算验证了公共停车场的车辆到达的间隔时间服从Poisson分布, 并通过解随机微分方程组求出了排队等待停车位的车辆数的数学期望和方差,以及服务时间的数学期望和方差,最后对所建模型进行了分析与总结,结果表明该模型是正确且有实用价值的.%In this paper, the current problems of difficulty in parking and illegal parking at public car parks in Chinese cities as well as how to scientifically plan and build public car parks are studied, so as to provide the theory and practice basis for solving the problems of city parking.And the parking situation of public car parks by Poisson process and queuing theory is analyzed to build a specific model.The fact that the arrival time intervals of cars in public car parks obey Poisson distribution has been verified through the calculation of a living example.By solving the stochastic differential equations, the mathematical expectation and variance of the number of vehicles to wait for parking space are found out, and the mathematical expectation and variance of service time are also found out.Finally, the model is analyzed and summarized, and the results show that the model is right and valuable.
    • 余建星; 王华昆; 余杨; 樊志远; 刘晓强; 刘杰
    • 摘要: The pitting corrosion stochastic model including non-homogeneous Poisson process used in pit generation and the non-homogeneous Markov process used in pit growth were improved.Aiming at the deficiency of both the existing power law model and the assumption of fixed number of pits during corrosion process,a new interpolation model for pitting growth was proposed,and the changes of number of pits during corrosion process taken into consideration.Comparison between the experimental and simulation results shows that the proposed model can not only avoid the deficiency of the power law model in physics,but also simulate the pitting corrosion propagation process of aluminum alloy and stainless steel more realistically.Besides,the interpolation model has higher accuracy than the power law model for pits initiated instantaneously.Therefore,the proposed model can be used as a new model for the stochastic process of maximum pitting growth,which can be used in oil and gas transportation system.%对采用非齐次Poisson过程模拟点蚀萌生和采用非齐次Markov过程模拟点蚀生长的点蚀随机模型进行改进,针对已有研究中幂律模型和点蚀过程固定点蚀数目假定的不足,提出了一个新的点蚀生长插值模型,并将腐蚀过程中点蚀数目的动态变化纳入考虑,使数值模型更切合实际.与已有试验结果的对比表明:新插值模型不仅能避免幂律模型在物理上的不足,而且能更好地模拟铝合金和不锈钢实际的点蚀传播过程,对于点蚀瞬时萌生模型,插值模型模拟精度均高于幂率模型,因此该模型可作为最大点蚀深度生长随机过程的新模型,应用于油气输送系统.
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