CN103593435B - 不确定数据PT‑TopK查询近似处理系统和方法 - Google Patents
不确定数据PT‑TopK查询近似处理系统和方法 Download PDFInfo
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- CN103593435B CN103593435B CN201310561183.XA CN201310561183A CN103593435B CN 103593435 B CN103593435 B CN 103593435B CN 201310561183 A CN201310561183 A CN 201310561183A CN 103593435 B CN103593435 B CN 103593435B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
- G06F16/2462—Approximate or statistical queries
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
Description
x-Tuple | Sensor_id | Time | Temperature | Probability |
τ1 | s1 | Time1 | 20.1 | 0.2 |
τ1 | s1 | Time1 | 19.8 | 0.7 |
τ2 | s1 | Time2 | 18.5 | 0.9 |
τ2 | s1 | Time2 | 17.6 | 0.1 |
Possible world | Probability |
w1={20.1,18.5} | 0.18 |
w2={20.1,17.6} | 0.02 |
w3={19.8,18.5} | 0.63 |
w4={19.8,17.6} | 0.07 |
w5={18.5} | 0.09 |
w6={17.6} | 0.01 |
x-tuple_id | Tuple_id | Sensor_id | Time | Temperature | Probability |
τ1 | t1 | S1.1 | Time1 | 32.1 | 0.6 |
τ2 | t2 | S1.1.1 | Time2 | 31.6 | 0.1 |
τ2 | t3 | S1.1.1 | Time2 | 30.5 | 0.9 |
τ3 | t4 | S1.1.2 | Time1 | 28.9 | 0.3 |
τ4 | t5 | S1.1.3 | Time2 | 27.8 | 0.1 |
x-tuple_id | Tuple_id | Sensor_id | Time | Temperature | Pro |
τ5 | t6 | S1.2 | Time2 | 35.2 | 0.7 |
τ6 | t7 | S1.2.1 | Time1 | 34.4 | 0.3 |
τ6 | t8 | S1.2.1 | Time1 | 33.1 | 0.4 |
τ7 | t9 | S1.2.2 | Time1 | 29.5 | 0.5 |
τ8 | t10 | S1.2.3 | Time2 | 28.9 | 0.5 |
τ9 | t11 | S1.2.4 | Time1 | 27.7 | 0.5 |
Claims (8)
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150347508A1 (en) * | 2014-06-02 | 2015-12-03 | Microsoft Corporation | Partial result classification |
CN104915424A (zh) * | 2015-06-12 | 2015-09-16 | 华东师范大学 | 一种非确定数据库下的Top-k查询及执行方法 |
CN106599095B (zh) * | 2016-11-24 | 2020-07-14 | 上海交通大学 | 基于完整历史记录的减枝方法 |
CN106897373B (zh) * | 2017-01-19 | 2020-01-21 | 浙江大学 | 一种基于PostgreSQL和众包的不完整数据查询处理方法 |
CN111026784B (zh) * | 2019-11-13 | 2022-05-03 | 浙江大学 | 一种不确定数据流概率求和阈值查询方法 |
CN111444736B (zh) * | 2020-03-24 | 2021-07-13 | 中山大学 | 基于分簇竞争的防碰撞方法、移动阅读器、可读存储介质 |
Citations (2)
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CN102457411A (zh) * | 2011-10-14 | 2012-05-16 | 中国人民解放军国防科学技术大学 | 基于不确定数据的网络安全态势模糊评估方法 |
CN102651028A (zh) * | 2012-04-09 | 2012-08-29 | 云南大学 | 基于d-s证据理论的不确定性数据世系查询处理方法 |
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US8234295B2 (en) * | 2009-06-03 | 2012-07-31 | International Business Machines Corporation | Managing uncertain data using Monte Carlo techniques |
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CN102457411A (zh) * | 2011-10-14 | 2012-05-16 | 中国人民解放军国防科学技术大学 | 基于不确定数据的网络安全态势模糊评估方法 |
CN102651028A (zh) * | 2012-04-09 | 2012-08-29 | 云南大学 | 基于d-s证据理论的不确定性数据世系查询处理方法 |
Non-Patent Citations (2)
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"不确定性数据管理技术研究综述";周傲英;《计算机学报》;20090131;第32卷(第1期);全文 * |
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Inventor after: Mao Yingchi Inventor after: Lu Ji Inventor after: Chen Hao Inventor after: Wang Xiaogang Inventor after: Yu Jiyuan Inventor after: Wang Kang Inventor after: Wang Jiulong Inventor before: Mao Yingchi Inventor before: Wang Kang Inventor before: Wang Jiulong Inventor before: Zhu Lili Inventor before: Jieqing |
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