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MooM -- A Prototype Framework for Management of Ontology Mappings

MooM -- A Prototype Framework for Management of Ontology Map...

引用

International Conference on Advanced Information Networking and Applications (AINA)

作者： Hendrik Thomas Rob Brennan Declan O'Sullivan Federated Autonomic Management of End-to-end Communication Services (FAME) Knowledge & Data Engineering Group Trinity College Dublin Ireland

The heterogeneity of ontologies is a major obstacle to the promised interoperability of knowledge in the Semantic Web. Ontology mappings can help to mitigate the effects by specifying the correspondences between related ontologies. However, the creation of mappings is still complex and time-consuming and therefore it is appealing to discover existing mappings and to reuse them. For reuse, it is essential to understand how a mapping was created and applied. Thus meta-data documenting the lifecycle of an ontology mapping is essential to facilitate management and reuse. Currently the mapping lifecycle is only fragmentary documented and in general the reuse of ontology mappings is insufficiently supported by applications and formats. This paper addresses the question to what extent a semantically expressive ontology-based meta-data model can aid in the discovery, management and reuse of ontology mappings. In particular, experimental results collected from a use-case study on mapping discovery are presented. Based on findings derived, it is shown that semantic rich and effective meta-data describing the ontology mapping lifecycle are crucial for management of ontology mappings. Finally, to address the identified challenges, a framework for management of ontology mappings is outlined.

关键词： Ontologies Documentation Resource description framework Semantics Measurement Educational institutions

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Approaches to Relating and Integrating Semantic data from Heterogeneous Sources

Approaches to Relating and Integrating Semantic Data from He...

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IEEE WIC ACM International Conference on Web Intelligence (WI)

作者： John Keeney Aidan Boran Ivan Bedini Christopher J. Matheus Peter F. Patel-Schneider Knowledge & Data Engineering Group & FAME Computer Science & Statistics Trinity College Dublin Ireland Bell Laboratories Alcatel-Lucent Dublin Ireland

Integrating and relating heterogeneous data using inference is one of the cornerstones of semantic technologies and there are a variety of ways in which this may be achieved. Cross source relationships can be automatically translated or inferred using the axioms of RDFS/OWL, via user generated rules, or as the result of SPARQL query result transformations. For a given problem it is not always obvious which approach (or combination of approaches) will be the most effective and few guidelines exist for making this choice. This paper discusses these three approaches and demonstrates them using an "acquaintance" relationship drawn from data residing in common RDF information sources such as FOAF and DBLP data stores. The implementation of each approach is described along with practical considerations for their use. Quantitative and qualitative evaluation results of each approach are presented and the paper concludes with initial suggestions for guiding principles to help in selecting an appropriate approach for integrating heterogeneous semantic data sources.

关键词： Semantics OWL Resource description framework Cognition Ontologies Engines Distributed databases

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Modeling Location-Based Profiles of Social Image Media Using Explorative Pattern Mining

Modeling Location-Based Profiles of Social Image Media Using...

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IEEE International Conference on and IEEE International Confernece on Social Computing (SocialCom) Privacy, Security, Risk and Trust (PASSAT)

作者： Florian Lemmerich Martin Atzmueller Artificial Intelligence and Applied Computer Science University of Würzburg Wurzburg Germany Knowledge and Data Engineering Group University of Kassel Kassel Germany

This paper presents an approach for modeling location-based profiles of social image media based on tagging information and collaborative geo-reference annotations. We utilize pattern mining techniques for obtaining sets of tags that are specific for the specified point, landmark, or region of interest. Next, we show how these candidate patterns can be presented and visualized for interactive exploration using a combination of general pattern mining visualizations and views specialized on geo-referenced tagging data. We present a case study using publicly available data from the Flickr photo sharing application.

关键词： data mining data visualization Visualization Tagging Media Histograms Microscopy

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A trust model for capability delegation in federated policy systems

A trust model for capability delegation in federated policy ...

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International Conference on Risks and Security of Internet and Systems, CRiSIS

作者： Kevin Feeney Simon N. Foley Rob Brennan FAME and Knowledge & Data Engineering Group Intelligent Systems Laboratory Trinity College Dublin Ireland FAME and Department of Computer Science University College Cork Cork Ireland

Federated policy systems are required to support the emergent complexity and organizational heterogeneity of modern Internet service delivery. This paper presents a distributed policy management approach which utilizes a flexible, tree-based capability authority model to partition and delegate federated capabilities or services. A trust management model and a delegation logic is defined which supports secure decentralized policy reasoning and addresses performance overheads due to distributed rule evaluation, threats from malformed or malicious federated principals and allows flexibility with respect to delegation chain reduction or capability authority re-partitioning. The system is evaluated through a security analysis and a prototype implementation of a federated policy engineering framework based on this logic is described. This framework is based on public key certificates and an extension to the Keynote Trust Management language. It provides practical management services such as key discovery and certificate revocation in addition to the core capability delegation function.

关键词： Information services Public key Internet Semantics Authorization Web and internet services

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Towards non-expert users monitoring networks and services through semantically enhanced visualizations

Towards non-expert users monitoring networks and services th...

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2010 International Conference on Network and Service Management, CNSM 2010

作者： Conlan, Owen Keeney, John Hampson, Cormac Williams, F. Peter FAME Knowledge and Data Engineering Group Trinity College Dublin Ireland

ISBN: (纸本)9781424489084

Managing networks and services in large virtual enterprises often requires significant expertise to decipher and reconcile information coming from several heterogeneous sources. This presents a significant challenge as the person with the network management expertise is not necessarily the person who has the task or vision of how to maximize the value of these services. Conversely it would be valuable for dedicated network managers to have insight into the meaning of the services running over the network. This paper presents an approach to empowering users to monitor and eventually manage network devices and services that they are not necessarily expert in. This paper details this challenge, presents two enabling technological frameworks and offers two compelling case studies currently being addressed in the Federated, Autonomic Management of End-to-End Communications Services (FAME) project. © 2010 IEEE.

关键词： Virtual corporation

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Supporting composite smart home services with semantic fault management

Supporting composite smart home services with semantic fault...

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5th International Conference on Future Information Technology, FutureTech 2010

作者： Etzioni, Zohar Keeney, John Brennan, Rob Lewis, David FAME and Knowledge and Data Engineering Group Trinity College Dublin Ireland

ISBN: (纸本)9781424469505

The proliferation of smart home technologies providing home users with digital services presents an interoperability problem. This paper asserts that the value of these services can be greatly extended by enabling technology-neutral compositions of these home services, and furthermore that the reliability of such composite services will be of paramount importance to ensuring widespread deployment. Therefore fault management capabilities must accompany the composition capabilities in order to increase the robustness and reliability of such services. This paper proposes a web services-based abstraction layer for home area network service composition and a semantically informed fault management system for composed services, which can assist in diagnosis and correction of problems with composite services in smart homes of the future. Prototyping work and use cases are also described and initial metrics are presented that investigate the overhead of introducing the technology neutral abstraction layer. © 2010 IEEE.

关键词： Web services

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Implementing the draft W3C semantic sensor network ontology

Implementing the draft W3C semantic sensor network ontology

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2010 8th IEEE International Conference on Pervasive Computing and Communications Workshops, PERCOM Workshops 2010

作者： O'Byrne, Daniel Brennan, Rob O'Sullivan, Declan Knowledge and Data Engineering Group Trinity College Dublin Dublin Ireland

ISBN: (纸本)9781424466054

This paper examines the feasibility of using ontologies to model generic sensor networks, based on the capabilities of the current generation of ontology tools. The creation of such an ontology, the current tool's capacity to adequately maintain it, and its potential functionality, as part of a larger semantic system are addressed here. These topics were addressed by constructing a generic sensor ontology and attempting to implement it as part of a larger semantic system. The process and the conclusions drawn from it are described below. © 2010 IEEE.

关键词： Semantic Web

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Musicgalaxy - An adaptive user-interface for exploratory music retrieval

Musicgalaxy - An adaptive user-interface for exploratory mus...

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7th Sound and Music Computing Conference, SMC 2010

作者： Stober, Sebastian Nürnberger, Andreas Data and Knowledge Engineering Group Otto-von-Guericke-University Magdeburg Germany

Sometimes users of a music retrieval system are not able to explicitly state what they are looking for. They rather want to browse a collection in order to get an overview and to discover interesting content. A common approach for browsing a collection relies on a similarity-preserving projection of objects (tracks, albums or artists) onto the (typically two-dimensional) display space. Inevitably, this implicates the use of dimension reduction techniques that cannot always preserve neighborhood and thus introduce distortions of the similarity space. This paper describes ongoing work on MusicGalaxy - an interactive user-interface based on an adaptive non-linear multi-focus zoom lens that alleviates the impact of projection distortions. Furthermore, the interface allows manipulation of the neighborhoods as well as the projection by weighting different facets of music similarity. This way the visualization can be adapted to the user's way of exploring the collection. Apart from the current interface prototype, findings from early evaluations are presented. © 2010 Sebastian Stober et al.

关键词： User interfaces

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Evaluation of adaptive springlens - A multi-focus interface for exploring multimedia collections 10

Evaluation of adaptive springlens - A multi-focus interface ...

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Proceedings of the 6th Nordic Conference on Human-Computer Interaction: Extending Boundaries

作者： Stober, Sebastian Hentschel, Christian Nürnberger, Andreas Data and Knowledge Engineering Group Otto-von-Guericke-University Magdeburg Germany

ISBN: (纸本)9781605589343

Sometimes users of a multimedia retrieval system are not able to explicitly state their information need. They rather want to browse a collection in order to get an overview and to discover interesting content. In previous work, we have presented a novel interface implementing a fish-eye-based approach for browsing high-dimensional multimedia data that has been projected onto display space. The impact of projection errors is alleviated by introducing an adaptive nonlinear multi-focus zoom lens. This work describes the evaluation of this approach in a user study where participants are asked to solve an exploratory image retrieval task using the SpringLens interface. As a baseline, the usability of the interface is compared to a common pan-and-zoom-based interface. The results of a survey and the analysis of recorded screencasts and eye tracking data are presented. © 2010 ACM.

关键词： Search engines

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Evaluation of a semantic-oriented approach to cross-lingual ontology mapping

Evaluation of a semantic-oriented approach to cross-lingual ...

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EKAW 2010 Poster and Demo Track

作者： Fu, Bo Brennan, Rob O'Sullivan, Declan Knowledge and Data Engineering Group School of Computer Science and Statistics Trinity College Dublin Ireland

Most ontology mapping research has focused on the matching of ontologies written in the same natural language, and developing tools and techniques that support this monolingual ontology mapping process. However, as knowledge modelling is not restricted to the usage of a single natural language, mapping systems must be able to operate upon ontologies that are labelled in diverse natural languages. This paper outlines a semanticoriented cross-lingual ontology mapping framework that makes use of several information sources to influence the selection of ontology label translations in the process of generating high quality mapping results, and presents a high-level overview of the evaluation strategy of the proposed framework.

关键词： Ontology

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