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Schema-mediated Exchange of Temporal XML Data

by Curtis Dyreson, Richard T. Snodgrass, Faiz Currim, Sabah Currim , 2005
"... Abstract. When web servers publish data formatted in XML, only the current state of the data is (generally) published. But data evolves over time as it is updated. Capturing that evolution is vital to recovering past versions, tracking changes, and evaluating temporal queries. This paper presents a ..."
Abstract - Cited by 4 (3 self) - Add to MetaCart
system to build a temporal data collection, which records the history of each published datum rather than just its current state. The key to exchanging temporal data is providing a temporal schema to mediate the interaction between the publisher and the reader. The schema describes how to construct a

Ontologies: Silver Bullet for Knowledge Management and Electronic Commerce

by Dieter Fensel , 2007
"... Currently computers are changing from single isolated devices to entry points into a world wide network of information exchange and business transactions called the World Wide Web (WWW). Therefore support in the exchange of data, information, and knowledge exchange is becoming the key issue in cur ..."
Abstract - Cited by 656 (45 self) - Add to MetaCart
Currently computers are changing from single isolated devices to entry points into a world wide network of information exchange and business transactions called the World Wide Web (WWW). Therefore support in the exchange of data, information, and knowledge exchange is becoming the key issue

Reconciling Schemas of Disparate Data Sources: A Machine-Learning Approach

by Anhai Doan, Pedro Domingos, Alon Halevy - In SIGMOD Conference , 2001
"... A data-integration system provides access to a multitude of data sources through a single mediated schema. A key bottleneck in building such systems has been the laborious manual construction of semantic mappings between the source schemas and the mediated schema. We describe LSD, a system that empl ..."
Abstract - Cited by 424 (50 self) - Add to MetaCart
A data-integration system provides access to a multitude of data sources through a single mediated schema. A key bottleneck in building such systems has been the laborious manual construction of semantic mappings between the source schemas and the mediated schema. We describe LSD, a system

A Query Language for XML

by Alin Deutsch, Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu , 1998
"... An important application of XML is the interchange of electronic data (EDI) between multiple data sources on the Web. As XML data proliferates on the Web, applications will need to integrate and aggregate data from multiple source and clean and transform data to facilitate exchange. Data extraction, ..."
Abstract - Cited by 340 (22 self) - Add to MetaCart
An important application of XML is the interchange of electronic data (EDI) between multiple data sources on the Web. As XML data proliferates on the Web, applications will need to integrate and aggregate data from multiple source and clean and transform data to facilitate exchange. Data extraction

Indexing and Querying XML Data for Regular Path Expressions

by Quanzhong Li, Bongki Moon - IN VLDB , 2001
"... With the advent of XML as a standard for data representation and exchange on the Internet, storing and querying XML data becomes more and more important. Several XML query languages have been proposed, and the common feature of the languages is the use of regular path expressions to query XML ..."
Abstract - Cited by 343 (9 self) - Add to MetaCart
With the advent of XML as a standard for data representation and exchange on the Internet, storing and querying XML data becomes more and more important. Several XML query languages have been proposed, and the common feature of the languages is the use of regular path expressions to query XML

The distribution of realized exchange rate volatility,

by Torben G Andersen , Francis X Diebold , Tim Bollerslev , Paul Labys - Journal of the American Statistical Association , 2001
"... Using high-frequency data on deutschemark and yen returns against the dollar, we construct model-free estimates of daily exchange rate volatility and correlation that cover an entire decade. Our estimates, termed realized volatilities and correlations, are not only model-free, but also approximatel ..."
Abstract - Cited by 333 (29 self) - Add to MetaCart
Using high-frequency data on deutschemark and yen returns against the dollar, we construct model-free estimates of daily exchange rate volatility and correlation that cover an entire decade. Our estimates, termed realized volatilities and correlations, are not only model-free, but also

Storing and querying ordered xml using a relational database system

by Igor Tatarinov, Kevin Beyer, Jayavel Shanmugasundaram - In SIGMOD , 2002
"... XML is quickly becoming the de facto standard for data exchange over the Intemet. This is creating a new set of data management requirements involving XML, such as the need to store and query XML documents. Researchers have proposed using relational database systems to satisfy these requirements by ..."
Abstract - Cited by 283 (3 self) - Add to MetaCart
XML is quickly becoming the de facto standard for data exchange over the Intemet. This is creating a new set of data management requirements involving XML, such as the need to store and query XML documents. Researchers have proposed using relational database systems to satisfy these requirements

XMill: an Efficient Compressor for XML Data

by Hartmut Liefke, Dan Suciu , 1999
"... We describe a tool for compressing XML data, with applications in data exchange and archiving, which usually achieves about twice the compression ratio of gzip at roughly the same speed. The compressor, called XMill, incorporates and combines existing compressors in order to apply them to heterogene ..."
Abstract - Cited by 230 (0 self) - Add to MetaCart
We describe a tool for compressing XML data, with applications in data exchange and archiving, which usually achieves about twice the compression ratio of gzip at roughly the same speed. The compressor, called XMill, incorporates and combines existing compressors in order to apply them

Query Optimization for XML

by Jason Mchugh, Jennifer Widom - In Proceedings of VLDB , 1999
"... XML is an emerging standard for data representation and exchange on the World-Wide Web. Due to the nature of information on the Web and the inherent flexibility of XML, we expect that much of the data encoded in XML will be semistructured:the data may be irregular or incomplete, and its structu ..."
Abstract - Cited by 208 (3 self) - Add to MetaCart
XML is an emerging standard for data representation and exchange on the World-Wide Web. Due to the nature of information on the Web and the inherent flexibility of XML, we expect that much of the data encoded in XML will be semistructured:the data may be irregular or incomplete, and its

Context Interchange: New Features and Formalisms for the Intelligent Integration of Information

by Cheng Hian Goh - ACM TOIS , 1999
"... The Context Interchange strategy presents a novel perspective for mediated data access in which semantic conflicts among heterogeneous systems are not identified a priori, but are detected and reconciled by a context mediator through comparison of contexts axioms corresponding to the systems engaged ..."
Abstract - Cited by 238 (96 self) - Add to MetaCart
engaged in data exchange. In this article, we show that queries formulated on shared views, export schema, and shared “ontologies ” can be mediated in the same way using the Context Interchange framework. The proposed framework provides a logic-based object-oriented formalism for representing
Results 1 - 10 of 2,088