查询词典 data

Data mining, known as Knowledge Discovery in Databases, is defined as the nontrivial extraction of implicit, previously unknown, and potentially useful information from a great volume of data accumulations. It uses machine learning, statistical and visualization techniques to discover and present knowledge in a form being easily comprehensible to humans. Data mining is an advanced data processing technique.

数据挖掘是在数据和数据库急剧膨胀的背景下，为解决"人们被数据淹没，但却饥饿于知识"这种困境而产生的，也是数据库技术、人工智能技术、统计技术、可视化技术等发展的结果，其目的就是从大量的、不完全的、有噪音的、模糊的数据中提取出隐含在其中的潜在有用的可信、新颖并能被人理解的信息和知识，它是一种高级的数据处理过程。

In this paper a genetic algorithm four-dimension data assimilation system was applied to the more complex MM5 model, we verify the performance of the genetic algorithm assimilation system, we take the a heavy rainfall process during 04-05, July, 2003 as the experimental research object, and carry out data assimilation experiment of actual observation data, compare the experimental results of the genetic algorithm assimilation system and MM5 adjoint model assimilation system with the experimental results without assimilation, the following is the result:genetic algorithm assimilation system is used not only in a barotropic primitive equation but also in the complex model, MM5, for example, in the ideal experiment the result of the genetic algorithm assimilation system is better than the MM5 adjoint model assimilation system, in the assimilation experiment of actual observation data, whichever assimilation system is used, the initial field of numerical prediction model is effectively improved and the prediction effect of physical field and rainfall are somewhat enhanced.

本文将遗传算法的四维同化系统运用到更复杂的MM5模式中，在理想实验中验证遗传算法同化系统的性能，并以2003年7月4日"南京暴雨"作为研究对象，进行了实际观测资料的同化，并将遗传算法同化系统和MM5伴随模式同化系统得到的结果跟未同化的结果进行了比较，结果如下：遗传算法同化系统不仅可以用在正压原始方程模式上，同样也可以用在MM5等复杂模式上，理想实验证明了遗传算法同化系统优于MM5伴随同化系统，在实际观测资料同化中，采用两种方法的同化系统都能有效地改善数值预报模式的初始场，能在一定程度上提高物理量场和降水量的预报效果。

Thus requestsearnestly to dispose the very big molding machine database theplatform, this project, the large-scale machinery system takes on bythe UNIX system, because its system stability and the security are allgood, has the certain support and the safeguard to the serverstability, this number of times according to the project transplant,the language which uses is COBOL, COBOL took public face commerciallanguage, mainly for the data processing, the data collection and theanalysis using of, is suitable for the data processing domain, itslogical rigorousness, the grammar readability, the maintainability,with the COBOL language easy transplant, all is becomes the commercialapplication procedure first choice language the superiority and thecharacteristic, Through the above demand, an item like this startedabout the data transplant project.

从而要求认真地配置好大型机数据库的平台，这次项目，大型机的系统由UNIX系统来担当，由于其系统的稳定性和安全性俱佳，对服务器的稳定性有一定的支持和保障，这次数据项目移植，所用的语言为COBOL，COBOL作为公用面向商业的语言，主要供数据处理，数据收集及分析之用，适用于数据处理领域，其逻辑的严谨性，语法的可读性，可维护性，和COBOL语言的易移植性，都是成为商用应用程序首选语言的优势与特点，通过上述需求，一项关于数据移植的工程就这样开始了。帮忙翻译成英文谢谢啦

The method for encoding a position interpolator includes generating key data and key value data to be encoded by extracting, from a first animation path constituted by the position interpolator, a minimum number of break points, which can bring about an error of no greater than a predetermined allowable error limit between the first animation path and a second animation to be generated by the extracted break points, encoding the key data generated in step, and encoding the key value data generated in step.

用于对位置内插器进行编码的方法包括：通过从由位置内插器构成的第一动画路径中提取最小数量的断点，生成将被编码的密钥数据和密钥值数据，这些断点可以在第一动画路径和将由所提取的断点生成的第二动画路径之间引起不大于预定的可允许误差极限的误差；对在步骤中生成的密钥数据进行编码；以及对在步骤中生成的密钥值数据进行编码。

In order to get useful data, it researches the network sniffing technology based on Raw Socket and mainly studies the technology of protocol analyze and data recombine. And it introduces the Trojan horse technique to the network data collection part, improves the process hiding technique, uses the triple-thread technique, and so on. It ensures the imperceptibility and stability of the network data collection part. Then this paper develops pseudo hypertext transfer protocol based on HTTP. This protocol is used in the communication between the network data collection part and the service part, which make the communication more covert.

研究基于Raw Socket的网络监听技术，为了能取到敏感数据，还对协议解析和数据重组技术做了详细研究；并在网络数据采集端引入了木马技术，对进程隐藏技术做了改进，采用三线程技术等，来保证网络数据采集端的隐蔽性和稳定性；接下来本文在分析HTTP协议的基础上设计开发了PHTTP协议，该协议用于网络数据采集端与服务端之间的数据通信，使通信更加隐蔽。

The software is constituted a set to have three structures patterns (the customer level, the logical level and the data level) the distributional spatial data platform software, this software mainly by based on number according to the data searches the module, isomerism space data conformity module, the spatial data browser three big modules constitutions.The paper altogether divides five chapters.

软件由基于元数据的数据查找模块、异构空间数据整合模块、空间数据浏览器模块构成，利用该软件能开发出具有三层结构(分别为客户层、逻辑层和数据层)模式的分布式空间数据集成平台。

Based on the ana1yse of the way of the water pipe network's management and the difficult problem which exist in the course of running water pipe network It presents the collectivity project of the city service pipe network Geography information manage system and estab1ish the waterpipe network's basic data-base,and conform afresh the network data by the mode of data-base organization. Then on the base of it,open out the water pipe networks graphics show and edit,hydraulic simulation module,disposal accident module and data query andanalyse module and set up the geography information system.it will exert the network's data-base and computer effect on the city water management.

在对目前给水管网管理方式以及管理过程中碰到的问题进行分析的基础上，给出了城市给水管网地理信息管理系统的总体方案和详细设计，同时建立了给水管网基础数据库，依照数据库的组织方式对管网数据进行管理、编辑和分析，并在此基础上，开发了城市给水管网图形显示、图形编辑、水力模拟、管网事故处理、管网数据查询分析和管网数据专题图等功能模块，建立了城市给水管网地理信息系统，以充分发挥管网数据和计算机技术在城市供水管理中的作用。

Reports and data provided include: downloadable annotated reports with data relating to the water quality (including trace metal concentrations) of the Forth Estuary between the years 1980-99, water quality standards for various coastal stretches in East Scotland, water quality classification schemes and resultant data (excellent - poor) for rivers, estuaries and coastal waters, bathing water data (1998 - 2001), SEPA indicator measurements for surface water quality, and a national archive of water quality data taken from 230 sites around Scotland which is used to estimate the river-borne input of selected contaminants to the sea and investigate long-term trends in main determinands.

其中包括：可下载报告全文，并带有1980-1999年Forth河口水质的相关数据，东苏格兰海岸不同的水质标准，水质分类方案及河流、河口、沿海、浴水的合成数据（1998-2001年），苏格兰环境保护机构的地表水质指示剂测定法和国家水质档案资料（水样取自苏格兰各地230个点位，常用于估计河流承受的污染物输入和调查长期趋势）。

Data structure is a professional and technical basis for classes, and he can help you learn computer analysis of the data processing structure characteristics, in order to choose the appropriate application of the logic of data structures, storage structures and the corresponding algorithms, and preliminary analysis of algorithms of time and space analysis techniques, But some algorithm data structure (linear scales, warehouse and accounts, string, etc.) will be some difficulty in understanding the data structure algorithms demonstration system is an effective way to resolve this difficult, and he gives a more intuitive understanding.

数据结构是一门专业技术基础课，他能帮助大家学会分析研究计算机加工的数据结构的特性，以便为应用涉及的数据选择适当的逻辑结构、存储结构及其相应的算法，并初步学会算法的时间分析和空间分析的技术，但数据结构中的一些算法（线性表、栈和队列、串等）在理解上会有些困难，数据结构算法演示系统正是解决这个困难的一种有效方法，他给人更直观的理解。

We also used the latent heat daily data、sensible heat daily data、relative humidity data and OLR daily data from NCEP-DOE Reanalysis2 which formed as 2.5-degree latitude x 2.5-degree longitude global grid with 144x73 points(1982～2005). The data of subtropic high ridge offered by Bational Climate Center . With singular value decomposition analysis, we studied key region of ocean-atmosphere interaction in the mid-latitudes in the Pacific. Second, by using wavelet analysis to study the character of the key regions of SST.Moreover the correlation analysis can help us to understand the reason of the cold water formed and the physical process of ocean-atmosphere interaction in the mid-latitudes in the Pacific. There are three mostly SVD modes which contribution reach to 70%,So the three mostly modes can reflect the mostly structure in the key region.

采用奇异值分解方法对1982～2005年逐候SSTA场和500hPa位势高度场进行同期、大气超前海洋、大气滞后海洋的分析，确定中纬度西北太平洋海气相互作用的关键区；利用小波分析对关键区海温和副高脊线进行周期分析，深入了解研究区域海温和副高脊线的年际、年代际变化特征；通过关键区海温与500hPa位势高度距平场的相关分析，研究中纬度西北太平洋SST异常与副高位置异常的关系；针对2005年夏季关键区SST异常与副高脊线位置异常开展海气相互作用物理量分析和大气环流分析，探讨关键区SST异常对副高位置异常的可能影响过程。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。