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脏数据
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  dirty data
     But as a result of the Web data characteristic, the information extracted from the net has the problem of "dirty data", and can use not directly, so it is necessary to carry on the data cleaning, eliminates the dirty data, and use data directly.
     但是由于Web数据的特点,从网上信息抽取得来的数据存在着大量“脏数据”,并不能直接使用,因而有必要进行数据清洗,消除“脏数据”,转化为可直接使用的数据。 针对实例层次的数据质量问题系统分析了Web数据清洗的方法
短句来源
     We bring forward two definitions including dirty data and noise data, in the pretreatment process.
     特别对于日志的预处理中的问题,提出了日志的“脏数据”和“噪声数据”两个概念,并且对这两个概念进行了详细的阐述并做了比较。
短句来源
     To assure that applications never read dirty data, cache manager uses cache validationalgorithm to determine whether data in local cache is consistent with the primary copy on theserver.
     Cache验证算法的目的是确认客户本地缓存中的数据和服务器上的数据是否一致,以保证应用系统不会读到脏数据
短句来源
     In this paper, the background of ETL development and the fields being widely researched at present are summarized, the challenges of ETL facing in heterogeneous muti-data sources integration, testing and resolving of dirty data are discussed, ETL presents three trends which are more universal, more efficient and more intelligent.
     本文综述了ETL发展的背景、目前广泛研究的领域,论述了ETL在异构数据源集成和脏数据的检测与解决两方面面临的挑战,指出ETL将呈现出通用化、高效化、智能化三大发展趋势。
短句来源
     In medical data quality field,there are a series of problems on "dirty data","non-standardized data","data information island"and so on,which are bringing about the low quality in basic data,data warehouse and CRM(customer relationship management)etc.
     医疗数据质量普遍存在着“脏数据”、“非标准化数据”、“数据信息孤岛”等一系列问题,具体体现在基本数据质量堪忧,后续应用如数据仓库的数据质量受影响和CRM(客户关系管理)的数据质量受影响。
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  data corruption
     Log Based Data Corruption Detection and Recovery
     基于日志的脏数据检测与恢复
短句来源
  “脏数据”译为未确定词的双语例句
     Dynamic Intelligent Cleaning for Dirty Electric Load Data Based on Data Mining
     基于数据挖掘的电力负荷脏数据动态智能清洗
短句来源
     We intercept and capture the read and write system calls via putting the NVRAM on the Request queue. Then observing the capacity of the "dirty" data, we redirect the writing direction to the hard disk while detecting the proportion of the "dirty" data exceeds the limit.
     通过文件系统对数据读写操作流程的分析,在系统的Request队列中将其读写的对象置换为NVRAM,从而实现数据读写的截取和转向,然后对NVRAM的脏数据容量进行检测,当其到达NVRAM容量的一定比例后,调用相应的程序把脏数据对外设回写。
短句来源
     As to multi-record one, the thesis studies the cleaning strategy of two common kinds: incomplete data and duplicate records.
     构建了清洗规则定制模块,解决了单记录型脏数据的清洗问题; 研究了缺损数据和相似重复记录两类常见多记录型脏数据的清洗策略;
短句来源
     Detailed and exact metadata is absolutely nec-essarily for the creation,the data loading,the data cleaning and regular maintenance of a data warehouse.
     详细而准确的元数据对于数据仓库的创建、数据加载、运行维护、清理脏数据等工作都必不可少。
短句来源
     For better performance and other purposes, some special applications have direct access to data which resides in the main memory, as a result of which, the risk of data being corrupted due to application default is increased.
     由于性能和其他要求,存在一类特殊的应用,它们要求大批量数据常驻内存,并直接在内存中对数据进行存取访问,增加内存中产生脏数据的可能性。
短句来源
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  dirty data
Bibliometric time series data may exhibit various inconsistencies, and we describe an approach to handling such "dirty data".
      
Broadly, dirty data include missing data, wrong data, and non-standard representations of the same data.
      
The results of analyzing a database/data warehouse of dirty data can be damaging and at best be unreliable.
      
The impact of dirty data on data mining is also explored.
      
Caching of dirty data blocks in a non-volatile storage (NVS) cache allows the destaging of dirty blocks to be deferrable, so as to improve the response time of read requests by giving them a higher priority than write requests.
      
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  data corruption
A method of extracting a temporally bounded component of a composite signal has been developed which minimizes data corruption in signal processing.
      
The TREC-5 confusion track used a set of 49 known-item tasks to study the impact of data corruption on retrieval system performance.
      
Both types of environments exhibit loss caused by data corruption and link outage, in addition to congestion‐related loss.
      
A typical technique is to use a system of locking data to prevent data corruption caused by multiple users editing and reading it.
      
Any errors, media damage, or data corruption that might interfere with proper file processing must be reported to the ordering agency.
      
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The improving of the requirement of data analysis promoted the development of data warehouse.While de-signing a data warehouse system,it is very important to manage metadata.Detailed and exact metadata is absolutely nec-essarily for the creation,the data loading,the data cleaning and regular maintenance of a data warehouse.In this paper,based on the research of metadata and its management ,the design and implementation of metadata and metadata man-agement module in the data warehouse system SEUwarehouse...

The improving of the requirement of data analysis promoted the development of data warehouse.While de-signing a data warehouse system,it is very important to manage metadata.Detailed and exact metadata is absolutely nec-essarily for the creation,the data loading,the data cleaning and regular maintenance of a data warehouse.In this paper,based on the research of metadata and its management ,the design and implementation of metadata and metadata man-agement module in the data warehouse system SEUwarehouse are introduced in detail.

人们对数据分析的要求的不断提高导致了数据仓库的发展,而在建设数据仓库的过程中元数据管理起着至关重要的作用。详细而准确的元数据对于数据仓库的创建、数据加载、运行维护、清理脏数据等工作都必不可少。文章在对数据仓库系统中的元数据以及元数据管理进行全面分析的基础上,较为详细地介绍了笔者自行开发的数据仓库系统SEUwarehouse中的元数据及其管理的设计与实现。

A lot of data is dirty because of some reasons.It is required and crucial to cleaning these data when we mainly depend on them. Data cleaning is a major part of data warehousing,KDD,TDQM(total data quality management). We provide an overview of data cleaning including its content,technology and realization. And we also introduce two main application: detecting outlier and duplicate elimination.

由于各种原因 ,数据中存在这样或那样的脏数据需要清理 (净化 )。特别是数据仓库、KDD及TDQM(综合数据质量管理 )中 ,必须对数据进行清理。介绍了数据清理的有关内容、技术与实现方案 ,着重介绍了目前的两个重点研究、应用内容 :异常发现与记录重复

For better performance and other purposes, some special applications have direct access to data which resides in the main memory, as a result of which, the risk of data being corrupted due to application default is increased. In this paper, data corruption in main-memory data management is discussed. Also presented is a practical method for detecting and recovering data corruption based on log, which has been used in the telecom accounting application system.

由于性能和其他要求,存在一类特殊的应用,它们要求大批量数据常驻内存,并直接在内存中对数据进行存取访问,增加内存中产生脏数据的可能性。该文对内存中的脏数据进行了分类,并结合传统数据库的日志技术和检查点技术,给出了脏数据的预防、静态检测和恢复的基本方法。该方法在移动计费系统中得到了应用。

 
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