Results 1 - 10 of 2,149

Don't Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources

by Mary Tork Roth , 1997
"... Garlic is a middleware system that provides an in-tegrated view of a variety of legacy data sources, without changing how or where data is stored. In this paper, we describe our architecture for wrap-pers, key components of Garlic that encapsulate data sources and mediate between them and the middle ..."
Abstract - Cited by 246 (2 self) - Add to MetaCart
is flexible enough to accommo-date data sources with a variety of data models and a broad range of traditional and non-tradition-al query processing capabilities. 1

The Cougar Approach to In-Network Query Processing in Sensor Networks

by Yong Yao, Johannes Gehrke - SIGMOD Record , 2002
"... The widespread distribution and availability of smallscale sensors, actuators, and embedded processors is transforming the physical world into a computing platform. One such example is a sensor network consisting of a large number of sensor nodes that combine physical sensing capabilities such as te ..."
Abstract - Cited by 498 (1 self) - Add to MetaCart
The widespread distribution and availability of smallscale sensors, actuators, and embedded processors is transforming the physical world into a computing platform. One such example is a sensor network consisting of a large number of sensor nodes that combine physical sensing capabilities

Multiple-Query Optimization

by Timos K. Sellis - ACM Transactions on Database Systems , 1988
"... Some recently proposed extensions to relational database systems, as well as to deductive database systems, require support for multiple-query processing. For example, in a database system enhanced with inference capabilities, a simple query involving a rule with multiple definitions may expand to m ..."
Abstract - Cited by 263 (4 self) - Add to MetaCart
Some recently proposed extensions to relational database systems, as well as to deductive database systems, require support for multiple-query processing. For example, in a database system enhanced with inference capabilities, a simple query involving a rule with multiple definitions may expand

An assumption-based truth-maintenance system

by Raymond Reiter, Johan De Kleer - Artificial Intelligence , 1986
"... In this paper we (1) define the concept of a Clause Man-agetnent System (CMS) — a generaizatiou of de Kleer’s ATMS, (2) motivate such systems in terms of efficiency of search and abductive reasoning, and (3) characterize the computation affected by a CMS in terms of the concept of prime implicants. ..."
Abstract - Cited by 334 (11 self) - Add to MetaCart
.’ 1. A Problem-Solving Architecture Figure 1 illustrates an architecture for a problem solving system consisting of a domain dependent Reasoner cou-pled to a domain independent Clause Management System (CMS). For our present purposes, the Reasoner is a black box which, m the process of doing whatever

The design of the borealis stream processing engine

by Daniel J. Abadi, Yanif Ahmad, Magdalena Balazinska, Mitch Cherniack, Jeong-hyon Hwang, Wolfgang Lindner, Anurag S. Maskey, Er Rasin, Esther Ryvkina, Nesime Tatbul, Ying Xing, Stan Zdonik - In CIDR , 2005
"... Borealis is a second-generation distributed stream processing engine that is being developed at Brandeis University, Brown University, and MIT. Borealis inherits core stream processing functionality from Aurora [14] and distribution functionality from Medusa [51]. Borealis modifies and extends both ..."
Abstract - Cited by 250 (10 self) - Add to MetaCart
systems in non-trivial and critical ways to provide advanced capabilities that are commonly required by newly-emerging stream processing applications. In this paper, we outline the basic design and functionality of Borealis. Through sample real-world applications, we motivate the need for dynamically

Querying the physical world

by Johannes Gehrke, Praveen Seshadri - IEEE Personal Communications , 2000
"... In the next decade, millions of sensors and small-scale mobile devices will integrate processors, memory and communication capabilities. Networks of devices will be widely deployed for monitoring applications. In these new applications, users need to query very large collections of devices in an ad- ..."
Abstract - Cited by 190 (1 self) - Add to MetaCart
database system, distributed query execution techniques are applied to leverage the computing capabilities of devices, and to reduce communication. In this paper, we define an abstraction that allows us to represent a device network as a database and we describe how distributed query processing techniques

Peer-to-Peer Information Retrieval Using Self-Organizing Semantic Overlay Networks

by Chunqiang Tang, Zhichen Xu, Sandhya Dwarkadas , 2003
"... Content-based full-text search is a challenging problem in Peer-toPeer (P2P) systems. Traditional approaches have either been centralized or use flooding to ensure accuracy of the results returned. In this paper, we present pSearch, a decentralized non-flooding P2P information retrieval system. pSea ..."
Abstract - Cited by 242 (7 self) - Add to MetaCart
Content-based full-text search is a challenging problem in Peer-toPeer (P2P) systems. Traditional approaches have either been centralized or use flooding to ensure accuracy of the results returned. In this paper, we present pSearch, a decentralized non-flooding P2P information retrieval system. p

XSB as an Efficient Deductive Database Engine

by Konstantinos Sagonas, Terrance Swift, David S. Warren - In Proceedings of the ACM SIGMOD International Conference on the Management of Data , 1994
"... This paper describes the XSB system, and its use as an in-memory deductive database engine. XSB began from a Prolog foundation, and traditional Prolog systems are known to have serious deficiencies when used as database systems. Accordingly, XSB has a fundamental bottom-up extension, introduced thro ..."
Abstract - Cited by 236 (32 self) - Add to MetaCart
. For non-stratified programs, a metainterpreter with the same properties is provided. In addition XSB significantly extends and improves the indexing capabilities over those of standard Prolog. Finally, its syntactic basis in HiLog [2], lends it flexibility for data modelling. The implementation of XSB

Crowddb: answering queries with crowdsourcing.

by J Franklin , D Kossmann , T Kraska , S Ramesh , R S Xin , ; J Wang , T Kraska , M J Franklin , J Feng - In SIGMOD, , 2011
"... ABSTRACT Many data management problems are inherently vague and hard for algorithms to process. Take for example entity resolution, also known as record linkage, the process to resolve records for the same entity from heterogeneous sources. Properly resolving such records require not only the synta ..."
Abstract - Cited by 145 (11 self) - Add to MetaCart
to improve traditional data processing flow. We expect this to be a fruitful research area for the many years to come and enable more powerful data management applications. BODY Judiciously leveraging microtask platforms can enable more powerful data management applications that are otherwise impossible

The TV-tree -- an index structure for high-dimensional data

by King-ip Lin, H. V. Jagadish, Christos Faloutsos - VLDB Journal , 1994
"... We propose a file structure to index high-dimensionality data, typically, points in some feature space. The idea is to use only a few of the features, utilizing additional features whenever the additional discriminatory power is absolutely necessary. We present in detail the design of our tree struc ..."
Abstract - Cited by 218 (7 self) - Add to MetaCart
, capable of performing similarity searching on several, non-traditional (`exotic') data types. The targ...
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