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ID:37069702
大小:1.49 MB
页数:66页
时间:2019-05-16
《大数据背景下基于抽样的近似聚合查询优化技术研究与实现》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、分类号TP393学号14060067UDC004.75密级公开工学硕士学位论文大数据背景下基于抽样的近似聚合查询优化技术研究与实现硕士生姓名张轩学科专业计算机科学与技术研究方向大数据采样与分析指导教师卢锡城教授国防科学技术大学研究生院二〇一六年十一月ResearchandImplementationonSamplingofApproximateAggregationQueryundertheBigDataEnvironmentCandidate:ZhangXuanAdvisor:LuXichengAdissertationSubmittedinp
2、artialfulfillmentoftherequirementsforthedegreeofMasterof(Engineering)in(DisciplineTitle)GraduateSchoolofNationalUniversityofDefenseTechnologyChangsha,Hunan,P.R.China(October,2016)国防科学技术大学研究生院硕士学位论文目录摘要...........................................................................
3、......................................iABSTRACT........................................................................................................iii第一章引言......................................................................................................11.1研究背景.......
4、..................................................................................................11.1.1聚合查询的概念与特点........................................................................11.1.2稀疏数据的特点.............................................................................
5、.......21.1.3分层抽样的特点....................................................................................31.2研究现状...........................................................................................................41.2.1近似聚合查询技术的研究现状......................................
6、.......................41.2.2分层抽样算法的研究现状....................................................................51.3研究内容与成果...............................................................................................61.4论文框架......................................................
7、.....................................................7第二章相关介绍...............................................................................................92.1聚合查询技术.................................................................................................92.1.1简单的聚合函数
8、....................................................................
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