Results 1 - 10 of 6,813

Sesame: A Generic Architecture for Storing and Querying RDF and RDF Schema

by Jeen Broekstra, Arjohn Kampman, Frank Van Harmelen , 2002
"... RDF and RDF Schema are two W3C standards aimed at enriching the Web with machine-processable semantic data. ..."
Abstract - Cited by 543 (11 self) - Add to MetaCart
RDF and RDF Schema are two W3C standards aimed at enriching the Web with machine-processable semantic data.

Inductive-Data-Type Systems

by Frederic Blanqui, Jean-Pierre Jouannaud, Mitsuhiro Okada , 2002
"... In a previous work ("Abstract Data Type Systems", TCS 173(2), 1997), the leI two authors presented a combined lmbined made of a (strongl normal3zG9 alrmal rewrite system and a typed #-calA#Ik enriched by pattern-matching definitions folnitio a certain format,calat the "General Schem ..."
Abstract - Cited by 821 (23 self) - Add to MetaCart
In a previous work ("Abstract Data Type Systems", TCS 173(2), 1997), the leI two authors presented a combined lmbined made of a (strongl normal3zG9 alrmal rewrite system and a typed #-calA#Ik enriched by pattern-matching definitions folnitio a certain format,calat the "

Schema abstraction‖ in a multiple-trace memory model

by Douglas L. Hintzman - Psychological Review , 1986
"... A simulation model of episodic memory, MINERVA 2, is applied to the learning of concepts, as represented bythe schema-abstraction task. The model assumes that each experience produces a separate memory trace and that knowledge of abstract oncepts i derived from the pool of episodic traces at the tim ..."
Abstract - Cited by 359 (2 self) - Add to MetaCart
A simulation model of episodic memory, MINERVA 2, is applied to the learning of concepts, as represented bythe schema-abstraction task. The model assumes that each experience produces a separate memory trace and that knowledge of abstract oncepts i derived from the pool of episodic traces

I.: Adding formal semantics to the Web: building on top of RDF Schema

by Jeen Broekstra, Michel Klein, Stefan Decker, Dieter Fensel, Ian Horrocks - In: Proc. of the ECDL 2000 Workshop on the Semantic Web (2000
"... Abstract RDF Schema provides means to define vocabulary, structure and constraints for expressing metadata about Web resources. However, formal semantics for the primitives defined in RDF Schema are not provided, and the expressivity of these primitives is not enough for full-fledged ontological mod ..."
Abstract - Cited by 24 (4 self) - Add to MetaCart
Abstract RDF Schema provides means to define vocabulary, structure and constraints for expressing metadata about Web resources. However, formal semantics for the primitives defined in RDF Schema are not provided, and the expressivity of these primitives is not enough for full-fledged ontological

RQL: A Declarative Query Language for RDF

by Greg Karvounarakis, Sofia Alexaki, Vassilis Christophides, Dimitris Plexousakis, Michel Scholl
"... Real-scale Semantic Web applications, such as Web Portals and E-Marketplaces, require the management of voluminous metadata repositories containing descriptive information (i.e., metadata) about the available Web resources and services. Better knowledge about the meaning, usage, accessibility or qua ..."
Abstract - Cited by 247 (27 self) - Add to MetaCart
are already appearing (e.g., as exported Portal catalogs or service descriptions), sufficiently expressive declarative languages for querying both RDF descriptions and schemas are still missing. In this paper, we propose RQL, a new RDF query language, relying on a formal graph model that permits

RDF-3X: a risc-style engine for RDF

by Thomas Neumann , Gerhard Weikum - Proc. VLDB Endowment , 2008
"... ABSTRACT RDF is a data representation format for schema-free structured information that is gaining momentum in the context of Semantic-Web corpora, life sciences, and also Web 2.0 platforms. The "pay-as-you-go" nature of RDF and the flexible pattern-matching capabilities of its query lan ..."
Abstract - Cited by 149 (11 self) - Add to MetaCart
ABSTRACT RDF is a data representation format for schema-free structured information that is gaining momentum in the context of Semantic-Web corpora, life sciences, and also Web 2.0 platforms. The "pay-as-you-go" nature of RDF and the flexible pattern-matching capabilities of its query

Data-Centric Schema Creation for RDF

by Justin J. Lev, Mohamed F. Mokbel, Justin J. Lev, Mohamed F. Mokbel
"... Abstract — Very recently, the vision of the Semantic Web has brought about new challenges in data management. One fundamental research issue in this arena is storage of the Resource Description Framework (RDF): the data model at the core of the Semantic Web. In this paper, we study a data-centric ap ..."
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Abstract — Very recently, the vision of the Semantic Web has brought about new challenges in data management. One fundamental research issue in this arena is storage of the Resource Description Framework (RDF): the data model at the core of the Semantic Web. In this paper, we study a data

Analytic Analysis of Algorithms

by Philippe Flajolet , 1992
"... . The average case analysis of algorithms can avail itself of the development of synthetic methods in combinatorial enumerations and in asymptotic analysis. Symbolic methods in combinatorial analysis permit to express directly the counting generating functions of wide classes of combinatorial struct ..."
Abstract - Cited by 331 (13 self) - Add to MetaCart
are presented. The range of applications includes formal languages, tree enumerations, comparison--based searching and sorting, digital structures, hashing and occupancy problems. These analytic approaches allow an abstract discussion of asymptotic properties of combinatorial structures and schemas while

An Indexing Scheme for RDF and RDF Schema based on Suffix Arrays

by Akiyoshi Matono, Toshiyuki Amagasa, Masatoshi Yoshikawa, Shunsuke Uemura - Proceedings of SWDB’03 , 2003
"... Abstract. The Semantic Web is a candidate for the next generation of the World Wide Web. It is anticipated that the number of metadata written in RDF (Resource Description Framework) and RDF Schema will increase as the Semantic Web becomes popular. In such a situation, demand for querying metadata d ..."
Abstract - Cited by 12 (1 self) - Add to MetaCart
Abstract. The Semantic Web is a candidate for the next generation of the World Wide Web. It is anticipated that the number of metadata written in RDF (Resource Description Framework) and RDF Schema will increase as the Semantic Web becomes popular. In such a situation, demand for querying metadata

RDF Metadata ABSTRACT

by Nick Bassiliades, Ioannis Vlahavas
"... In this paper we present R-DEVICE, a deductive object-oriented knowledge base system for reasoning over RDF metadata. R-DEVICE imports RDF documents into the CLIPS production rule system by transforming RDF triples into COOL objects and uses a deductive rule language for reasoning about them. R-DEVI ..."
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is efficiently translated into sets of firstorder logic rules using metadata, where variables can range over classes and properties, so that reasoning over the RDF schema can be made. Users can define views which are materialized and incrementally maintained by translating deductive rules into CLIPS production
Results 1 - 10 of 6,813