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aggregation query processing

WO2009003773A1 - Aggregation query processing -

Aggregation query processing Download PDF Info Publication number WO2009003773A1. WO2009003773A1 PCT/EP2008/056636 EP2008056636W WO2009003773A1 WO 2009003773 A1 WO2009003773 A1 WO 2009003773A1 EP 2008056636 W EP2008056636 W EP 2008056636W WO 2009003773 A1 WO2009003773 A1 WO 2009003773A1 Authority WO WIPO (PCT) Prior art keywords

(PDF) Aggregation Query Processing in P2P Networks

PDF | On Oct 1, 2012, Ratnmala Bhimanpallewar and others published Aggregation Query Processing in P2P Networks | Find, read and cite all the research you need on ResearchGate

Data_Aggregation_and_Query_Processing_in_WSN

2016-9-9 · Data Aggregation and Query Processing in WSN. Ayoni Mukherjee , Sanjit Setua. Abstract - A wireless sensor network (WSN) has a wide range of important applications such as remote environment monitoring , target tracking etc. This has

Efficient Aggregation Query Processing for Large-Scale ...

2018-8-9 · Abstract. This paper presents a highly efficient aggregation query processing method for large-scale multidimensional data. Recent developments in network technologies have led to the generation of a large amount of multidimensional data, such as sensor data.

Advance Database Aggregation Query Processing. |

The aggregation query is an important but costly operation in database management systems. In the worst case, to compute an ag- gregate, all tuples in a database needs to be examined.

Aggregate-Query Processing in Data Warehousing

2006-7-29 · Aggregate-Query Processing in Data Warehousing Environments* Ashish Gupta Venky Harinarayan Dallan Quass IBM Almaden Research Center Abstract In this paper we introduce generalized pro- jections (GPs), an extension of duplicate- eliminating projections, that capture aggre- gations, groupbys, duplicate-eliminating pro-

Aggregate query processing in the presence of duplicates ...

2015-3-10 · Then, the partial aggregation results are updated by using the unique events that satisfy the selection predicate p in the query Q (lines 1–4). The potential duplicates are then added to DupS (line 5). The rest of the pseudo code of LCA-EA2 is identical to the

aggregation query processing - na-koupelny.cz

3.1 Query processing We have followed cluster based approach for data aggregation which indicates efficient data collection,management and aggregation in WSN. Each cluster will consist of a number of small sensor nodes(SN), one cluster head (CH), one beacon node(BN).

Processing spatial keyword query as a top-k aggregation ...

Processing spatial keyword query as a top-k aggregation query. Pages 355–364. Previous Chapter Next Chapter. ABSTRACT. We examine the spatial keyword search problem to retrieve objects of interest that are ranked based on both their spatial proximity to the query location as well as the textual relevance of the object's keywords. Existing ...

Optimizing Performance of Aggregate Query Processing

2019-5-8 · In this paper, we study the characteristics of aggregate query, a typical type of analytical query, and proposed an approximate query processing approach to optimize the execution of massive data based aggregate query with a histogram data structure. We implemented this approach into big data system Hive and compare it with Hive and AQP-enabled ...

WO2009003773A1 - Aggregation query processing -

Aggregation query processing Download PDF Info Publication number WO2009003773A1. WO2009003773A1 PCT/EP2008/056636 EP2008056636W WO2009003773A1 WO 2009003773 A1 WO2009003773 A1 WO 2009003773A1 EP 2008056636 W EP2008056636 W EP 2008056636W WO 2009003773 A1 WO2009003773 A1 WO 2009003773A1 Authority WO WIPO (PCT) Prior art keywords

KR20100041750A - Aggregation query processing -

Aggregation query processing Download PDF Info Publication number KR20100041750A. KR20100041750A KR1020107000295A KR20107000295A KR20100041750A KR 20100041750 A KR20100041750 A KR 20100041750A KR 1020107000295 A KR1020107000295 A KR 1020107000295A KR 20107000295 A KR20107000295 A KR 20107000295A KR 20100041750 A

(PDF) Aggregation Query Processing in P2P Networks

PDF | On Oct 1, 2012, Ratnmala Bhimanpallewar and others published Aggregation Query Processing in P2P Networks | Find, read and cite all the research you need on ResearchGate

aggregation query processing - na-koupelny.cz

3.1 Query processing We have followed cluster based approach for data aggregation which indicates efficient data collection,management and aggregation in WSN. Each cluster will consist of a number of small sensor nodes(SN), one cluster head (CH), one beacon node(BN).

Aggregate Query Processing on XML Data

essing aggregate queries. Since no extra index structure is used in our method, the algorithm is suitable for processing streaming XML data. In addition, the experimental results indicate that the performance of our method is better than the in-dex-based approach. (2:8, 2 Keywords: aggregation, XML, databases, query processing, data streams. 1 ...

Ad Hoc Aggregation Query Processing Algorithms Based

2011-10-12 · Ad-hoc Aggregation query is extremely important for data-intensive applications in the cloud which extracts valuable summary information on massive datasets to help decision-maker make right decisions. Current data storage schemes (row-store and column-store) cannot efficiently answer ad-hoc aggregation on massive data sets in the cloud. A new data storage structure (bit vector storage ...

PARTIAL AGGREGATION AND QUERY PROCESSING OF

2021-9-14 · SplitCube approach. By relying on novel query processing techniques, we need not generate a whole data cube. By reducing the storage of the data cube, we can achieve faster query processing, which in turn makes it possible to further reduce the amount of pre-aggregation

Aggregate data faster with approximate query processing ...

2019-5-22 · 1. Introduction to approximate query processing . Data aggregation is a principal asset for data analysts when exploring any type of data, as well as an essential task for Business Intelligence (BI) tools when generating charts and dashboards for

Processing spatial keyword query as a top-k aggregation ...

Processing spatial keyword query as a top-k aggregation query. Pages 355–364. Previous Chapter Next Chapter. ABSTRACT. We examine the spatial keyword search problem to retrieve objects of interest that are ranked based on both their spatial proximity to the query location as well as the textual relevance of the object's keywords. Existing ...

AQP++: Connecting Approximate Query Processing With ...

2018-3-1 · swer aggregation queries within interactive response times. As the amount of data is continuously growing at an unprecedented rate, this is becoming increasingly challenging. In the past, the database community has proposed two separate ideas, sampling-based ap-proximate query processing (AQP) and aggregate precomputation

Aggregation Query Processing - glasvereiser.de

Aggregation query processing captain sarah de,aggregation query processing. nov the aggregation and related query could ask for a single value or actually cover a whole set of values to be returned without the aggregations, the query would return results much slower and with more cpu and memory intensity as the query must complete the aggregation calculations at run time, which of course takes ...

Ad Hoc Aggregation Query Processing Algorithms Based

2011-10-12 · Ad-hoc Aggregation query is extremely important for data-intensive applications in the cloud which extracts valuable summary information on massive datasets to help decision-maker make right decisions. Current data storage schemes (row-store and column-store) cannot efficiently answer ad-hoc aggregation on massive data sets in the cloud. A new data storage structure (bit vector storage ...

1 Multi-Objective Query Processing for Data Aggregation

2006-10-4 · in data aggregation systems, the primary query processing task of the mediator is to select an appropriate subset of sources that are most relevant to a given query and the specific user objectives. Source selection in data aggregation system needs to be adaptive to both the characteristics of the sources and the objectives of the users.

Reliable spatial window aggregation query processing ...

After wireless sensor network is deployed, users often submit spatial window aggregation queries to obtain statistical information of the regions of interest, such as maximum temperature, average humidity etc. Existing spatial window aggregation query processing algorithms are based on the assumption that the communication links are ideal which means there are perfect communication links ...

PARTIAL AGGREGATION AND QUERY PROCESSING OF

2021-9-14 · SplitCube approach. By relying on novel query processing techniques, we need not generate a whole data cube. By reducing the storage of the data cube, we can achieve faster query processing, which in turn makes it possible to further reduce the amount of pre-aggregation

Aggregation Environment for Query Optimization in

Aggregation Environment for Query Optimization in Network Monitoring. ... Query processing and optimization in the WSN is a very challenging task because of their energy and memory constraint.

[2103.15994] Combining Aggregation and Sampling

2021-3-30 · Combining Aggregation and Sampling (Nearly) Optimally for Approximate Query Processing. Sample-based approximate query processing (AQP) suffers from many pitfalls such as the inability to answer very selective queries and unreliable confidence intervals when sample sizes are small. Recent research presented an intriguing solution of combining ...

An adaptive in-network aggregation operator for query ...

Adaptive query operators (algorithms) can adjust their behavior in response to specific events that take place during data processing. In this paper, we propose an adaptive in- network aggregation operator for query processing in sensor nodes of a WSN, called ADAGA (ADaptive AGgregation

Adaptive Query Processing for Data Aggregation-.ppt_麦多 ...

2018-10-9 · Adaptive Query Processing for Data Aggregation,Mining, Using and Maintaining Source Statistics,M.S Thesis Defense by Jianchun FanCommittee Members Dr. Subbarao Kambhampati chair Dr. Huan Liu Dr. Yi Ch,麦多课文库mydoc123

Java中用Aggregation对Mongo聚合查询_dclingcloud的博客 ...

2019-6-10 · 上一篇已经Aggregation 做了很详细的介绍,这边就不在介绍,Spring Data MongoDB 项目提供与MongoDB文档数据库的集成,Spring Data MongoDB 提供org.springframework.data.mongodb.core.MongoTemplate是对Connection进行封装,提供了连接管理,Spring Data MongoDB 像hibernate等一样提供了模板,mongoTemplate提供调用Aggregation 方法。