Results 1 - 10 of 387

Functional properties of neurons in middle temporal vi

by John H. R. Maunsell, David C. Van Essen
"... in the middle temporal visual area (MT) of anesthetized, paralyzed macaque monkeys. A computer-driven stimulator was used to make quantitative tests of selectivity for stimulus direction, speed, and orientation. The data were taken from 168 units that were histologically identified as being in MT. 2 ..."
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in the middle temporal visual area (MT) of anesthetized, paralyzed macaque monkeys. A computer-driven stimulator was used to make quantitative tests of selectivity for stimulus direction, speed, and orientation. The data were taken from 168 units that were histologically identified as being in MT

E.: Approximating owl-dl ontologies

by Edward Thomas, Jeff Z. Pan - In: Proc. of AAAI 2007 (In Press). (2007 , 2006
"... Abstract. In this poster, we propose to recast the idea of knowledge compilation into approximating OWL DL ontologies with DL-Lite ontologies, against which query answering has only polynomial data complexity. We identify a useful category of queries for which our approach also guarantees completene ..."
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Abstract. In this poster, we propose to recast the idea of knowledge compilation into approximating OWL DL ontologies with DL-Lite ontologies, against which query answering has only polynomial data complexity. We identify a useful category of queries for which our approach also guarantees

Approximate OWL reasoning with Screech

by Tuvshintur Tserendorj, Sebastian Rudolph, Markus Krötzsch, Pascal Hitzler , 2007
"... Applications of expressive ontology reasoning for the Semantic Web require scalable algorithms for deducing implicit knowledge from explicitly given knowledge bases. Besides the development of more efficient such algorithms, awareness is rising that approximate reasoning solutions will be helpful an ..."
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and needed for certain application domains. In this paper, we present a comprehensive overview of the Screech approach to approximate reasoning with OWL ontologies, which is based on the KAON2 algorithms, facilitating a compilation of OWL DL TBoxes into Datalog, which is tractable in terms of data complexity

unknown title

by unknown authors
"... Abstract — This paper outlines the problems the authors came across when, after the realization of ReMuNaICCD, an ontology supposed to allow a more articulate use of the present cultural heritage information system, they approached the task of populating it with instances. To permit immediate use of ..."
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of the ontology, it was necessary to develop ICCD2OWL, a data compiler able to translate the data recorded in the available ICCD cards into class instances and property instances for the ontology. The first task was to design formal codifications for both the ICCD attribute-value data model and the ReMuNaICCD

Temporalising OWL 2 QL ⋆

by A. Artale, R. Kontchakov, F. Wolter, M. Zakharyaschev
"... Abstract. We design a temporal description logic, TQL, that extends the standard ontology language OWL 2 QL, provides basic means for temporal conceptual modelling and ensures first-order rewritability of conjunctive queries for suitably defined data instances with validity time. 1 ..."
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Abstract. We design a temporal description logic, TQL, that extends the standard ontology language OWL 2 QL, provides basic means for temporal conceptual modelling and ensures first-order rewritability of conjunctive queries for suitably defined data instances with validity time. 1

Zhi# OWL Aware Compilation

by Alexander Paar , Denny Vrande£i¢
"... Abstract. The usefulness of the Web Ontology Language to describe domains of discourse and to facilitate automatic reasoning services has been widely acknowledged. However, the programmability of ontological knowledge bases is severely impaired by the dierent conceptual bases of statically typed ob ..."
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object-oriented programming languages such as Java and C# and ontology languages such as the Web Ontology Language (OWL). In this work, a novel programming language is presented that integrates OWL and XSD data types with C#. The Zhi# programming language is the rst solution of its kind to make XSD data

OWL2Jess: A Transformational Implementation of the OWL Semantics

by Jing Mei, Elena Paslaru Bontas, Zuoquan Lin - In Proceedings of International Workshops on ISPA, LNCS 3759 , 2005
"... Abstract. The wide scale usage of OWL for the formalization of real-world ontologies is currently influenced by important limitations which concern both its expressivity and the efficiency of OWL specific reasoning tools. While the expressivity limitations may be overcame by extending the OWL langua ..."
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are derived from an initial OWL file by one XSLT stylesheet, while the RDF(S) and OWL Semantics are pre-defined as Jess rules. By making hidden knowledge explicit, OWL2Jess achieves the knowledge compilation: the implicit subsumption and membership relations can be subsequently identified using the Jess rule

Inconsistency Tolerance in OWL 2 QL Knowledge and Action Bases Statement of Interest

by Diego Calvanese, Evgeny Kharlamov, Marco Montali, Dmitriy Zheleznyakov
"... A Business Process (BP) is constituted by (i) data that describes the state of affairs and (ii) a set of activities (to be performed) over this data. The activities, when combined in what is usually referred to as an execution flow, achieve some business goal. When analyzing BPs, one is usually inte ..."
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A Business Process (BP) is constituted by (i) data that describes the state of affairs and (ii) a set of activities (to be performed) over this data. The activities, when combined in what is usually referred to as an execution flow, achieve some business goal. When analyzing BPs, one is usually

Conceptual Modelling in UML and OWL-2

by Jesper Zedlitz, Norbert Luttenberger
"... Abstract—Both OWL-2 and UML static class diagrams lend themselves very well for conceptual modelling of complex in-formation systems. Both languages have their advantages. In order to benefit from the advantages and software tools of both languages, it is usually necessary to repeat the modelling pr ..."
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, relationship types) in static UML data models and OWL-2 ontologies. We provide a transformation for similar elements. Keywords—UML; OWL; conceptual modelling; model transfor-mation; meta modelling I.

Scalable OWL 2 Reasoning for Linked Data

by Aidan Hogan, Jeff Z. Pan, Axel Polleres, Yuan Ren
"... The goal of the Scalable OWL 2 Reasoning for Linked Data lecture is twofold: first, to introduce scalable reasoning and querying techniques to Semantic Web researchers as powerful tools to make use of Linked Data and large-scale ontologies, and second, to present interesting research problems for th ..."
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The goal of the Scalable OWL 2 Reasoning for Linked Data lecture is twofold: first, to introduce scalable reasoning and querying techniques to Semantic Web researchers as powerful tools to make use of Linked Data and large-scale ontologies, and second, to present interesting research problems
Results 1 - 10 of 387