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统计数据分析

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Process of bibliometric analysis is made up of data acquire, data preprocess, statistical calculate and application analysis.

文献计量统计分析的流程包括数据获取、数据预处理、统计计算与应用分析四大模块。

Employ be market research in the statistics means, adopt the quota sampling, divide into groups consumer on the basis of the revenue against the age.

本次研究主要是针对的上海宝山地区的购房群体,使用的是统计学中的市场调查的方法,采用配额抽样,根据收入与年龄将消费者进行分组,并结合常用统计软件 SPSS ,主要运用描述统计、因子分析的统计方法对调查数据进行分析,得出潜在和目标消费者定位分析与房产定位问题。

The thesis introduces the basic thoughts and contents of the robust statistics first, then applied the robust statistical methods to the analyzing of the residents' income and expenditure data of Tianjin City on this foundation, and then makes contrast with the traditional statistical methods, thus embodies the advantage of the robust statistical methods sensitively when the actual data doesn't obey the theoretical assumptions.

本文首先介绍稳健统计学的基本思想及其内容,在此基础上还将运用稳健统计方法对天津市居民收入和支出数据进行系统而全面的实证分析,并与传统的统计方法进行对比,从而从感性的角度来体现稳健统计方法在实际数据并不服从理论假定时所具有的不可比拟的优势。

The statistical discrepancy of each spectral data point is estimated, then the contiguous data points are integrated adaptively based on the statistical discrepancy. Comparing to the fixed width binning, the proposed method can overcome the following negative effects on the subsequently statistical analysis. For example, signals with opposite statistical discrepancies may be superposition in a same region.

通过计算各数据点统计特性,并根据相邻数据点的统计差特性进行自适应积分,克服了目前普遍采用的等间隔分段积分法可能存在的缺陷(如统计差异性相反的信号相互抵消、微弱特征信号被掩盖及谱图信噪比下降等),从而避免了对后续统计分析所产生的负面影响。

The major achievement of this paper is: Based on characteristics of the traffic data distribution, execute pattern recognition operations on traffic condition on two dimensions by clustering, then use BP neural network to describe and forecast traffic flow aiming at each pattern. Making use of classic flow-occupancy inverse "V" model, implement polynomial fitting using least-squares algorithm and statistics method on flow curves to detect outliers which are proved to be not accord with practice through the actual implement, then use the moving average model to recorrect the outliers and absent. Make correlation analysis on muti-direction flow queues of the intersection and ones of upriver intersections, choose flow queue with high correlation as assistant one to improve the error tolerance of the prediction system, at the same time we can use the method to give an estimation of flow in intersection with out sensors. We design and implement an SOA(Service-Oriented Architecture)-based UTDD(urban traffic data mining development) with high expansibility and performance, which implement unified management and call of the data-mining application though defining a XML-based description of data-mining process and a common interface to call data-mining process, finally we build traffic flow prediction application model on UTDD.

根据交通流量数据分布的特征,提出基于k-means的二次聚类方法,对交通流量在流量大小和时间上进行模式划分,进而对各个交通流模式进行基于BP神经网络的描述和预测,从而提高模型对流量预测的精度; 2)根据流量/时间占有率倒&V&字形曲线分布模型,提出基于最小二乘法的三次多项式曲线拟合和统计方法的异常检测方法,实际应用表明该方法能够有效识别异常数据,然后根据移动平均算法对异常数据进行修正; 3)基于序列相关性分析,分别对预测方向的交通流量数据序列、上游路口相关序列以及预测路口其它各个方向上的交通流量序列进行分析,选择相似性流量序列,作为辅助序列提供其他没有检测器路口的流量估计; 4)设计和实现了基于SOA(Service-Oriented Achitecture)的高性能、可扩展的智能交通数据挖掘系统UTDD,该系统通过定义基于XML的数据挖掘过程描述和通用的过程模型接口,实现数据挖掘应用的统一管理和调用,最后在UTDD上建立了基于路口流量预测的应用模型。

Within the integreted system,the function of the data-basedmanagement sub-system is to input,store,inquire and calculatedata;the function of graphic data management sub-system is toinput,store,inquire,display,output and transform data;thefunction of digital terrain model sub-system is to displaythree dimention graph,calculate slope,aspect and hilling;thefunction of general analysis model sub-system is to make multi-factor statistical analysis such as regression analysis;thefunction of applied model sub-system is to predict the amountof soil erosion,evaluate the land resource and make land useplanning.

属性数据管理子系统具有对属性数据进行输入、存储、检索、统计的功能;图形数据管理子系统具有对图形进行输入、存储、查询、显示、输出及数据格式转换的功能;数字地形模型子系统具有显示三维图形及计算坡度、坡向和阴影的功能;一般分析模型提供了在多因子分析中常用的诸如回归分析等模型;应用模型开发了计算土壤侵蚀量、进行土地资源评价及土地利用规划的模型。

First, the control parameters of door hinge are defined. Based on the test data of these control parameters, we conducted statistical analysis on the data, and compared the test results of first time data with the results of second time data. Results show that the second time test data is better than the first one.

首先对车门铰链的控制参数进行定义,根据实测数据对这些控制参数进行了统计分析,并将第一次和第二次实测统计结果进行对比分析,分析结果表明第二次统计结果明显好于第一次。

This invention relates to three-dimensional seismic data processing quality monitoring technology. Selecting time-window and analysis frequency for FFT to obtain frequency-domain conversion result for every channel; taking mean-filter to obtain the statistic excited energy or noise disturbance; plotting all results on plane graph to monitor the 3D excited energy or noise disturbance; taking normalization and autocorrelation to all earthquake channel; summating all autocorrelation statistic result to obtain opposite statistic autocorrelation result; finding out and plotting the zero-crossing of autocorrelation on plane position for monitoring excited wavelet.

本发明涉及一种三维地震资料处理质量监控技术,步骤是:选定时窗和分析频率;对某炮各地震道在时窗内做快速富立叶变换,得到道数据在频率域变换结果;对同炮的所有地震道做频率域中值滤波,得到该炮的统计激发能量或噪声干扰量结果;将所有炮的计算结果绘到各炮点平面图上,监控三维激发能量或噪声干扰;对地震数据某炮的各地震道做归一化自相关;对同炮的所有地震道的自相关统计求和,得到该炮的统计自相关结果;寻找该炮统计自相关的零交叉时,将所有炮的零交叉时绘到各炮点平面位置上,完成激发子波监控。

At the beginning of 2007, the data of COSCO Shanghai demonstrated that the oil-saving effect on "Yuan He","Teng He" and "Zhen He" vessels reached 22.8%, 6.5% and 8.6% respectively. Given the elements involved such as the improvement of hull surface finish, propeller surface finish, the working condition of the main engine after repair and the relatively small amount of data in the relatively short statistical period, the saving effect of PBCF might be "amplified" at present. Therefore, the Company will keep on tracing and analyzing the data.

在2007年初,根据上海远洋的提供的数据显示,&远河&、&腾河&和&珍河&轮安装PBCF后的节油效果达22.8%、6.5%和8.6%,这中间存在修船后船体表面光洁度、螺旋桨表面光洁度、主机工况的改善的因素,加之统计的周期相对较短,统计的数据相对不多,可能使目前PBCF的节能效果&放大&,因此,有待继续进行跟踪统计分析。

Based on the analysis of molding sand preparation process, a method of collecting the data for MSPC has been designed. To avoid the influence of a small quantity of samples to the result of PCA modeling, an improved PCA modeling method has been proposed.

根据砂处理过程的特点,设计多变量统计过程控制所需数据的采集方案;提出按照建立统计模型的不同阶段,采取μ3σ原则、指数加权滑动平均方法和改进的主元分析建模方法相结合的数据预处理方法,从而保证统计模型的准确性。

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推荐网络例句

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。