abstract for aggregate query processing in peer to p
abstract for aggregate query processing in peer to p
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Abstract Approximating Aggregation Queries in Peer-to

Abstract Peer-to-peer databases are becoming prevalent on the Internet for distribution and sharing of documents, applications, and other digital media. The problem of answering large scale, ad-hoc analysis queries – e.g., aggregation queries – on these databases poses unique challenges. Exact solutions can be time consuming and

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Aggregate queries in peer-to-peer OLAP Proceedings of ...

Aggregate queries in peer-to-peer OLAP. ... ABSTRACT. A peer-to-peer (P2P) data management system consists essentially in a network of peer systems, each maintaining full autonomy over its own data resources. Data exchange between peers occurs when one of them, in the role of a local peer, needs data available in other nodes, denoted the ...

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Fixed-precision approximate continuous aggregate queries ...

Abstract In this paper, we propose an efficient sample-based approach to answer fixed-precision approximate continuous aggregate queries in peer-to-peer databases. First, we define practical semantics to formulate fixed-precision approximate

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Aggregate-join query processing in parallel database ...

Queries containing aggregate functions often combine multiple tables through join operations. We call these queries "aggregate-join" queries. In parallel processing of such queries, it must be decided which attribute to be used as a partitioning attribute, particularly join attribute or group-by attribute.

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Query Processing In Peer To Peer Network Project Source ...

Apr 08, 2012  Query processing in peer to peer network project is a cse project which is implemented in visual studio C#.Net platform. This project explains about finding our sum, average, minimum and maximum count and aggregate in query processing. Peer to peer database has become one of the biggest sources for uploading downloading of images videos and ...

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Optimizing Aggregate Query Processing in Cloud Data ...

Sep 02, 2014  Abstract. In this paper, we study and optimize the aggregate query processing in a highly distributed Cloud Data Warehouse, where each database stores a subset of relational data in a star-schema. Existing aggregate query processing algorithms focus on optimizing various query operations but give less importance to communication cost overhead ...

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Efficient Distributed CQ Processing using Peers

ABSTRACT. In this paper, we propose a framework called CQ-Buddy, for supporting distributed continuous query (CQ) processing system based on Peer-to-Peer (P2P) technology. Working on the basis of peer heterogeneity, peers in a CQ-Buddy network "help" one another by sharing query workload and providing data.

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IJCSE Abstract

May 15, 2021  Hence, Approximate Query Processing Techniques (AQPTs) are an attractive option. AQPT are ideally suited for executing aggregate queries, where the AQPT provides approximate results with attractive computational efficiency. Recently in the literature, AQPT was presented to execute simple non-join aggregate queries on Big Data.

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CiteSeerX — Evaluated and Suggested Range aggregate query ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract- Individual computers provide opportunities for tremendous productivity gains, but they become many times more powerful when they're connected to one another forming a peer to peer network that gives them the ability to share data and processing resources.

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Efficient Approximate Query Processing in P2P Network

ABSTRACT Peer-to-peer (P2P) databases are becoming prevalent on the Internet for distribution and sharing of documents, applications, and other digital media. The problem of answering large-scale ad hoc analysis queries, for example, aggregation queries, on these databases poses unique challenges.

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Scalable Distributed Aggregate Computations through ...

Abstract. Computing aggregates over distributed data sets constitutes an interesting class of distributed queries. Recent advances in peer-to-peer discovery of data sources and query processing techniques have made such queries feasible and potentially more frequent. The concurrent execution of

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Sliding-Window Probabilistic Threshold Aggregate Queries ...

Abstract. Uncertain data streams are ubiquitous in many sensing and networking environments. Probabilistic aggregate query that returns a probability distribution to denote possible answers is extensively used on such streams. In many monitoring applications, it is only necessary to know whether the result distribution exceeds user-defined ...

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Optimizing in-network aggregate queries in wireless sensor ...

Abstract. This study proposes a method of in-network aggregate query processing to reduce the number of messages incurred in a wireless sensor network. When aggregate queries are issued to the resource-constrained wireless sensor network, it is important to efficiently perform these queries. Given a set of multiple aggregate queries, the ...

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CiteSeerX — Citation Query MOBIHIDE: A mobile peer-to-peer ...

Then, to improve system scalability of processing continuous privacy-aware queries, we propose a shared execution paradigm that shares query processing among a large number of continuous queries. The proposed scalable paradigm can be tuned through two parameters to trade off between system scalability and answer optimality.

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Aggregate-Query Processing in Data Warehousing

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-

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E–cient Range and Join Query Processing in Massively ...

Abstract Peer-to-peer (P2P) has become a modern distributed computing architecture that supports massively large- ... of massively distributed large-scale peer-to-peer (P2P) query processing. Many research papers, ... was originally created to support aggregate query, but by deploying range-based indexes, it can be used to support range query ...

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IJESRT

Aggregate Query Processing using Random walk approach in Dynamic Environment Vinod S. Gangwani *1, Prof. P. L. Ramteke 2 *1 Department of Computer Science Engineering H.V.P.M’s COET, SGBAU, Amravati (MH), India 2Department of Information Technology H.V.P.M’s COET, SGBAU, Amravati (MH), India [email protected] Abstract

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On Efficient Aggregate Nearest Neighbor Query Processing ...

Abstract. An aggregate nearest neighbor (ANN) query returns a point of interest (POI) that minimizes an aggregate function for multiple query points. In this paper, we propose an efficient approach to tackle ANN queries in road networks. Our approach consists of two phases: searching phase and pruning phase. In particular, we first continuously ...

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On Efficient Aggregate Nearest Neighbor Query Processing ...

On Efficient Aggregate Nearest Neighbor Query Processing in Road Networks W.-W. Sun, C.-N. Chen, L. Zhu, Y.-J. Gao, Y.-N. Jing, Qing Li Research output : Journal article publication › Journal article › Academic research › peer-review

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OLAP query reformulation in peer-to-peer data warehousing ...

Jul 01, 2012  When the peer is processing a query that was formulated on some other peer p, the data handler just collects local query results from the OLAP adapter and returns them to p. 4. OLAP adapter. This component adapts queries received from the query handler to the querying interface exposed by the local multidimensional engine. 5. Multidimensional ...

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Aggregate Query Answering under Uncertain Schema

Aggregate Query Answering under Uncertain Schema Mappings Avigdor Gal #1, Maria Vanina Martinez, Gerardo I. Simari, VS Subrahmanian ∗2 #Technion – Israel Institute of Technology Haifa 32000 Israel [email protected] ∗University of Maryland College Park, MD 2{mvm,gisimari,vs}@cs.umd Abstract—Recent interest in managing uncertainty in data ...

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Aggregate nearest neighbor queries in road networks — The ...

Aggregate nearest neighbor queries return the object that minimizes an aggregate distance function with respect to a set of query points. Consider, for example, several users at specific locations (query points) that want to find the restaurant (data point), which leads to the minimum sum of distances that they have to travel in order to meet.

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Skyline path queries with aggregate attributes — National ...

The method used for calculating this type of criteria is very different from that of existing criteria, and this can have a notable effect on the processing of ordinary skyline path queries. This paper defines the aggregate attributes of paths, discusses the impact of aggregate attributes on skyline path queries, and proposes a novel index tree ...

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Scalable approximate query processing with the DBO engine ...

Abstract. This article describes query processing in the DBO database system. Like other database systems designed for ad hoc analytic processing, DBO is able to compute the exact answers to queries over a large relational database in a scalable fashion. Unlike any other system designed for analytic processing, DBO can constantly maintain a ...

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Evaluation of top-k OLAP queries using aggregate R-trees ...

In this paper, we study the integration of the top-κ operator with the aggregate query processing module. For this, we make use of spatial indexes, augmented with aggregate information, like the aggregate R-tree. We device a branch-and-bound algorithm that accesses a minimal number of tree nodes in order to compute the top-κ groups.

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NSF Award Search: Award # 0448264 - CAREER: New ...

ABSTRACT One of the two goals of the project is to advance the state-of-the art in approximate query processing (AQP), a critical component of analytical processing -- a 3.5 billion dollar segment of the software industry. ... extensions of data-stream algorithms to distributed algorithms that can efficiently query sensor and peer-to-peer ...

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Fixed-precision approximate continuous aggregate queries ...

Abstract In this paper, we propose an efficient sample-based approach to answer fixed-precision approximate continuous aggregate queries in peer-to-peer databases. First, we define practical semantics to formulate fixed-precision approximate

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Unified Framework for Flexible and Efficient Top-k ...

Keywords: Top-k Query Processing, Ranked Retrieval, Peer-to-Peer, Content Distribution Networks, Multimedia Technical Areas: Data Management, Peer-to-Peer Corresponding Author: [email protected] 1. INTRODUCTION Peer-to-peer systems are becoming a common architecture for sharing large amounts of data [5, 6, 7]. Applications

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Aggregate Query Processing Definition

Clustering spatial networks for aggregate query processing: . in the original problem definition given in Section 2.1.3, the number K of parts is not known in advance. Thus, they use a partitioning algorithm based on RB with ratio-cut heuristic in order to create a number of parts, each with a size less than or equal to the disk page size .

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Beehive: Exploiting Power Law Query Distributions for O(1 ...

Abstract Structured peer-to-peer hash tables provide decentraliza-tion, self-organization, failure-resilience,and good worst-case ... aggregate query distribution function and estimates of object ... in the query processing takes the query to a node that has one more matching prefix than the previous node. A query traveling

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On Efficient Aggregate Nearest Neighbor Query Processing ...

On Efficient Aggregate Nearest Neighbor Query Processing in Road Networks W.-W. Sun, C.-N. Chen, L. Zhu, Y.-J. Gao, Y.-N. Jing, Qing Li Research output : Journal article publication › Journal article › Academic research › peer-review

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An unstructured peer-to-peer approach to aggregate node ...

Home Conferences HPDC Proceedings HPDC '08 An unstructured peer-to-peer approach to aggregate node selection. research-article . An unstructured peer-to-peer approach to aggregate node selection. Share on. Authors: Imran Rao. The University of Melbourne, Melbourne, UNK, Australia.

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What Can Databases Do for Peer-to-Peer?

Peer-to-Peer Design Choices Affecting Data Placement While the globally optimal peer-to-peer concept is conceptually simple to define for an ideal environment, in practice any P2P system will have certain limitations. These compromisesare due to factors such as constrainedbandwidthand resources, message propagationdelays, and so on.

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Aggregate Query Answering under Uncertain Schema

Aggregate Query Answering under Uncertain Schema Mappings Avigdor Gal #1, Maria Vanina Martinez, Gerardo I. Simari, VS Subrahmanian ∗2 #Technion – Israel Institute of Technology Haifa 32000 Israel [email protected] ∗University of Maryland College Park, MD 2{mvm,gisimari,vs}@cs.umd Abstract—Recent interest in managing uncertainty in data ...

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TBSAM: An Access Method for Efficient Processing of ...

Such a query is aimed at retrieving some aggregate characteristics of the raw data. In this paper, we present TBSAM, an access method that provides support for the efficient processing of aggregate queries. It is related to the B+-tree, and also possesses the latter’s efficient update properties.

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US6405207B1 - Reporting aggregate results from database ...

A facility for multidimensional, multilevel databases has a query syntax for specifying that aggregate-data cells representing higher levels of the database in a report include only the data from certain ones of the lower-level database items, rather than from all of them. A database engine extracts data from the lower-level query items from the database, and aggregates only the data from ...

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Interval Estimation for Aggregate Queries on Incomplete Data

[4] Zhang A, Wang J, Li J, Gao H. Aggregate query processing on incomplete data. In Proc. the 2nd International Joint Conference on Web and Big Data, July 2018, pp.286-294. [5] Jr W L. On semantic issues connected with incomplete information databases. ACM Trans. Database Syst., 1979, 4(3):262-296. [6] Reiter R. On closed world data bases.

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Weining Qian East China Normal University - Academia

Abstract We introduce the design and implementation of a peer-to-peer text retrieval and search prototype system called P-Terse in this paper. Compared with existing P2P systems, P-Terse has three novel features: 1) The text content of the shared documents is searchable, which is a natural yet useful extension to file name matching based search ...

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Designing a Super-Peer Network - Stanford University

Abstract A super-peeris a node in a peer-to-peer network that operates both as a server to a set of clients, and as an equal in a network of super-peers. Super-peer networks strike a balance between the inherent efficiency of centralized search, and the autonomy, load balancing and robustness to attacks provided by distributed search.

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Continuous Quantile Query Processing in Wireless Sensor ...

Peer Kröger 1 and Hans-Peter Kriegel 1 1 Institute for Computer Science, LMU, Munich, Germany 2 Dept. of Computing Science, University of Alberta, Canada {niedermayer, renz, kroeger, kriegel}@cip.i.lmu [email protected] ABSTRACT A major concern when processing queries within a wireless sensor network is to minimize the energy ...

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Aggregate nearest neighbor queries in road networks — The ...

Aggregate nearest neighbor queries return the object that minimizes an aggregate distance function with respect to a set of query points. Consider, for example, several users at specific locations (query points) that want to find the restaurant (data point), which leads to the minimum sum of distances that they have to travel in order to meet.

More

IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED

its broadcast). If Q is a duplicate, peer p drops the query; else peer p sends results from its local file index to peer q.If the query Q’s TTL has not yet expired (Q:TTL > 0), then peer p forwards the query Q with its TTL decremented by 1 to all its neighbors (except peer q). Fig. 1 provides a sketch of query processing in broadcast-style ...

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