历史数据

词组短语

historical data

与历史数据相关的网络例句 [注：此内容来源于网络，仅供参考]

The new man-hour statistic management information system, which applies Browser/Server framework and Relational Database Management System , is integrated with functions of data acquisition, data processing, data maintenance and report print-out. These have improved the timeliness, accuracy and analyzability of man-hour statistics and provided an effective means for accumulating the historical data of man-hours wo...

新系统采用浏览器／服务器结构和关系型数据库管理系统，集数据采集、数据处理、数据维护和报表生成于一体，提高了人工时统计的及时性、准确性和可分析性；为积累项目实耗工时的历史数据提供了有效手段；为形成工时定额标准奠定了基础；同时为项目投标报价阶段人工时的估算提供了可靠依据。

Object of data mining is service concepts of service bag, carrier of data mining is history data, and spirit of data mining is mining classification.

在对服务概念开发进行数据挖掘时，服务包中的服务概念是数据挖掘的对象，历史数据是数据挖掘的载体，分类挖掘是数据挖掘的指导思想。

So, if you have a large number of historical data points, organize your data in columns.

所以，如果你的历史数据比较多，需要对历史数据进行整理。

Strive hard to reach the sale index and profit indexBut, it is a fatal lacuna for all outlets in controlling inventory level and placing orders that only historical sale and stock figure are provided without the ability to forecast the customers'needs on the basis of historical sale and stock figure by scientific method, and without cost analysis and ability to order on the basis of minimal total cost.

但是"只有历史销售数据和库存数据，缺少对当前库存的成本分析，缺少凭借历史数据预测未来需求和在库存总成本最小化的前提下进行科学订货的能力"是所(来源：Afd9dBC论文网www.abclunwen.com)有大卖场在控制库存和合理订货时的最大缺陷。

The influence of weather on load is analyzed in detail. In addition, since bad data among the historical load data may have impact on the accuracy of the forecasting results, a method using Mallat algorithm of wavelet transform to pretreat load is presented.

另外，针对负荷历史数据中的坏数据和不良数据会对预测结果精度产生影响的问题，提出了用小波变换Mallat算法进行数据预处理，实例分析该方法处理数据具有良好的效果。

It's pointed out that soft sensor will play more important role in field bus network control system. According to this, a crude solution was addressed. At last, we point out that soft sensor technology must used to build an information warehouse for the whole enterprise, combined with data fusion, data warehouse, data rectification and other related technologies. The main contributions of this dissertation are as follows: The background, requirement, and application situation of soft sensors are expounded, the theories, methods and skills of soft sensing technology are analyzed, and the fruits and problems in current soft sensor technologies are summarized. Some new methods of soft sensor is proposed: A principal component analysis-based secondary variable selection method are proposed; A new conception which modeling data should have gross error detection is addressed, and then a cluster analysis-based modeling data gross error detection method is given.

本文的主要贡献有：对软测量技术根据实践的要求进行了一定的理论研究，针对具体问题提出了新的方法：讨论了辅助变量选择问题，研究了基于主元分析的辅助变量选择方法，该方法克服了传统方法只能利用数学模型产生的仿真数据进行最优辅助变量选择的缺点，可以根据历史数据进行辅助变量选择；提出了建模数据显著误差侦破的概念，指出传统的显著误差侦破研究的是已知过程数学模型的情况，而建模时数学模型是未知的，但是直接来自现场的数据并不能保证不含显著误差，并用基于聚类分析的方法解决了该问题，该方法利用聚类分析原理，直接面对过程数据，不需以过程模型为基础，在此基础上给出了软测量建模过程中样本数据的处理方法。

When processing the restrained conditions, we convert the restrained conditions into punish function and add it to fitness function which profits from the conventional method. We introduce the support vector machine to the selection operator, which increases the multiplicity of selection and increases the probability of the algorithm getting the overall optimal solution. Also, we use the adaptive probabilities of crossover and mutation in mixed GAs which enhances the efficiency of the algorithm. The result of tests about the system indicates that the improved genetic algorithm has more high convergence speed and better solution quality.

在生成初始种群时，不是简单的随机生成，而是用支持向量机对历史数据进行分类，用较优的一类历史数据作为初始种群；在约束条件的处理上，本文借鉴常规方法中的罚函数法，采用将约束条件作为罚函数包含到适应度评价中去的方法；在选择算子上，本文引入了支持向量机的方法，增加了选择的多样性，增加算法搜索到全局最优解的概率；同时针对交叉概率和变异概率在算法的前后期不同的情况，本文引入了Srinvivas等提出的动态自适应的方法，使得交叉概率和变异概率能够随着算法中个体的质量动态改变，提高算法的效率。

The historical information table records the relation between the historical data and the actual data. According to the relation, the realization method of historical data backdating is studied.

历史记录信息表记录了历史数据与现状数据的联系，根据这种联系研究了历史数据回溯的实现方法。

The method includes acquiring with the frequency meter the tested clock signal and measuring its frequency; sending the tested frequency value to the data acquisition and processing module for calculation and processing regularly; and processing the frequency data comprehensively in the data processing output module and displaying output figure and historical data.

所述的方法包括：首先，频率计采集待测时钟信号，并测试其频率值；然后，频率计定时将测试得到的待测时钟信号的频率值发送给数据采集处理模块进行计算处理；最后，数据输出处理模块对接收数据采集处理模块处理后的频率数据进行综合处理，并将获取的图形数据和历史数据显示输出。

The data acquisition system of this system adopts configuration software MCGS (Monitor and Control Generated System), the establishment of the database , the display of real-time data and historical data , design of the interface, connection of the cartoon and the realization of different curves such as course curve of noise and temperature , course curve of pressure fluctuation and course curve of work efficiency , etc. are finished in development and design of the data acquisition system. Having made comparatively deep research on the vibration theory and combining this theory with the practical pumping station pectrum analysis to data of this pumping station is carried through and the preliminary diagnosis result is received.

本系统的数据采集系统采用组态软件MCGS，在数据采集系统的开发与设计中，完成数据库的建立，实时数据与历史数据的显示、界面的设计，动画的连接，各种曲线的实现，如噪音与温度过程曲线、压力脉动过程曲线和工作效率过程曲线等；对振动理论做了较为深入的研究，并将理论与实际泵站结合，对该泵站的数据进行频谱分析，并得到初步的诊断结果。

与历史数据相关的网络解释 [注：此内容来源于网络，仅供参考]

historical cost accounting：历史成本会计 historical cost accounting 历史成本会计

1908 1 historical cost 历史成本 historical cos... | 1909 1 historical cost accounting 历史成本会计 historical cost accounting 历史成本会计 | 1912 1 historical summary 历史数据汇总表 historical summary ...

deactivation：惰性

这样CPOMR 中每个记录都有一个惰性(deactivation)日期/时间字段. (一个非零的惰性(deactivation)日期/时间表示记录是非活动的. ) CPOMR 要提供非活动/活动数据的显示. (非活动数据表示是历史数据. )通常,只有活动的项显示,

PDR：事故追忆

SCADA系统的基本功能: 1)前置通信及规约处理 2)网络服务及系统互联 3)数据库管理系统 4)实时数据处理 5)远方控制 6)历史数据管理 7)告警处理 8)顺序事件记录(SOE)功能 9)事故追忆(PDR)功能 10)用户权限及安全管理 11)报

predication：預測

⑷预测(predication) 预测是利用历史数据找出变化规律,建立模型,并由此模型对未来数据的种类及特征进行预测. 预测关心的是精度和不确定性,通常用预测方差来度量. ⑸时序模式(time-series pattern) 时序模式是指通过时间序列搜索出的重复发生概率较高的模式.

RetouchHistory Retouch：历史

SensorPixelSize 传感器像素尺寸 6.05 x 6.05 um | RetouchHistory Retouch历史 None | ImageDataSize 图像数据尺寸 4406607

Heat soak：历史数据报告存储与检索单元

Heat rate 历史数据报告 | Heat soak 历史数据报告存储与检索单元 | Hertz 保持

WS：工作站

工作站(WS) FB7000-MCS工作站(WS)运行在32位Windows NT/ Windows2000网络平台上,和FB7000-MCS过程控制网(C-NET) 连接,实现动态数据显示、数据采集、历史数据存取查询、报警事件处理、报表打印功能,实现系统的监控功能.

Dynasties：朝代

现在,在我研究的领域,有时候需要研究各个朝代(Dynasties)的人们的行为,以及导致这些行为的偏好,当然还有一些历史数据. 虽然我那时候还远未达到历史学专业水平,但我从所学的历史知识中受益匪浅. "在芝加哥大学学习历史学的过程中,

historical geology：地史学

historical data 历史数据 | historical geology 地史学 | historical production performance 历史开采动态

OAAY FI-AA: Hist. layout set-asset class FI-AA：历史数据表格式设定-资产分类

OAAX FI-AA: Asst class for grp asset only FI-AA:仅被集团资产使用的资产分类 | OAAY FI-AA: Hist. layout set-asset class FI-AA:历史数据表格式设定-资产分类 | OAAZ FI-AA: Settlement profile FI-AA:结算概况