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Adaptive retrieval and composition of socio-semantic content for personalised customer care

Adaptive retrieval and composition of socio-semantic content...

引用

International Workshop on Adaptation in Social and Semantic Web, SASweb 2010

作者： Steichen, Ben Wade, Vincent Knowledge and Data Engineering Group School of Computer Science and Statistics Trinity College Dublin Ireland

The parallel rise of the Semantic and Social Web provides unprecedented possibilities for the development of novel search system architectures. However, many traditional search systems have so far followed a simple one-size-fits-all paradigm by ignoring the different user information needs, preferences and intentions. In the last number of years, we have begun to see initial evidence that personalisation may be applied within web search engines, however little detail has been published other than adaptation based on user histories. Moreover, current implementations often fail to combine the mutual benefits of both structured and unstructured information resources. This paper presents techniques and architectures for leveraging socio-semantic content and adaptively retrieving and composing such content in order to provide personalised result presentations. The system is presented in a customer care scenario, which provides an application area for personalisation in terms of available heterogeneous resources as well as user preferences, context and characteristics. The presented architectures combine techniques from the fields of Information Retrieval, Semantic Search as well as Adaptive Hypermedia in order to enable efficient adaptive retrieval as well as personalised compositions.

关键词： Search engines

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Adaptive educational hypermedia systems in technology enhanced learning: A literature review 10

Adaptive educational hypermedia systems in technology enhanc...

引用

Proceedings of the 2010 ACM conference on Information technology education

作者： Mulwa, Catherine Lawless, Seamus Sharp, Mary Arnedillo-Sanchez, Inmaculada Wade, Vincent Knowledge and Data Engineering Group School of Computer Science and Statistics Trinity College Dublin United States

ISBN: (纸本)9781450303439

This literature review focuses on the educational benefits afforded to learners by Technology Enhanced Learning Environments (TELE) which adapt and personalize the learning experience. More specifically it focuses on Adaptive Educational Hypermedia Systems (AEHS) that incorporate Learning Styles. Adaptive approaches to learning offer alternatives to the traditional "Onesize- fits-all" approach and have driven the development of dynamic educational environments. The use of such environments can deliver educational benefits as educational offerings are personalised based upon various characteristics of individual learners. Copyright 2010 ACM.

关键词： Computer aided instruction

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Multi-facet exploration of image collections with an adaptive multi-focus zoomable interface

Multi-facet exploration of image collections with an adaptiv...

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2010 6th IEEE World Congress on Computational Intelligence, WCCI 2010 - 2010 International Joint Conference on Neural Networks, IJCNN 2010

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

ISBN: (纸本)9781424469178

Sometimes it is not possible for a user to state a retrieval goal explicitly a priori. One common way to support such exploratory retrieval scenarios is to give an overview using a neighborhood-preserving projection of the collection onto two dimensions. However, neighborhood cannot always be preserved in the projection because of the dimensionality reduction. Further, there is usually more than one way to look at a collection of images - and diversity grows with the number of features that can be extracted. We describe an adaptive zoomable interface for exploration that addresses both problems: It makes use of a complex non-linear multi-focal zoom lens that exploits the distorted neighborhood relations introduced by the projection. We further introduce the concept of facet distances representing different aspects of image similarity. Given user-specific weightings of these aspects, the system can adapt to the user's way of exploring the collection by manipulation of the neighborhoods as well as the projection. © 2010 IEEE.

关键词： Interface states

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Automatic metadata extraction from multilingual enterprise content 10

Automatic metadata extraction from multilingual enterprise c...

引用

Proceedings of the 19th ACM international conference on Information and knowledge management

作者： Şah, Melike Wade, Vincent Knowledge and Data Engineering Group School of Computer Science and Statistics Trinity College Dublin Dublin Ireland

ISBN: (纸本)9781450300995

Enterprises provide professionally authored content about their products/services in different languages for use in web sites and customer care. For customer care, personalization/personalized information delivery is becoming important since it re-encourages users to return to the service provider. Personalization usually requires both contextual and descriptive metadata. But current metadata authored by content developers is usually quite simple. In this paper, we introduce an automatic metadata extraction framework, which can extract multilingual metadata from the enterprise content, for a personalized information retrieval system. We introduce two new ontologies for metadata creation and a novel semi-automatic topic vocabulary extraction algorithm. We demonstrate and evaluate our approach on the English and German Symantec Norton 360 technical content. Evaluations indicate that the proposed approach produces rich and high quality metadata for a personalized information retrieval system. © 2010 ACM.

关键词： Ontology

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Managing ontology based integration systems using dependencies

Managing ontology based integration systems using dependenci...

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

作者： Boran, Aidan O'Sullivan, Declan Wade, Vincent Alcatel-Lucent Bell Labs Ireland Dublin Ireland Knowledge and Data Engineering Group Trinity College Dublin Ireland

ISBN: (纸本)9781424466054

Ontology-based information integration systems have been proposed to solve the problem of combining data residing at autonomous and heterogeneous sources. For such ontology based solutions to succeed in an industrial context, the integration ontology and mappings need to be managed to allow them to evolve as the data sources evolve. This research has developed a technique to support the management of ontology-based integration systems by modeling the dependencies that arise in the system. This paper describes the management problem, a solution, an industrial case study using dependency modeling and an evaluation mechanism. © 2010 IEEE.

关键词： data integration

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Stop thinking, start tagging: Tag semantics emerge from collaborative verbosity 10

Stop thinking, start tagging: Tag semantics emerge from coll...

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19th International World Wide Web Conference, WWW2010

作者： Körner, Christian Benz, Dominik Hotho, Andreas Strohmaier, Markus Stumme, Gerd Knowledge Management Institute Graz University of Technology Graz Austria Knowledge and Data Engineering Group University of Kassel Kassel Germany Data Mining and Information Retrieval Group University of Würzburg Würzburg Germany Knowledge Management Institute Know-Center Graz University of Technology Graz Austria

ISBN: (纸本)9781605587998

Recent research provides evidence for the presence of emergent semantics in collaborative tagging systems. While several methods have been proposed, little is known about the factors that influence the evolution of semantic structures in these systems. A natural hypothesis is that the quality of the emergent semantics depends on the pragmatics of tagging: Users with certain usage patterns might contribute more to the resulting semantics than others. In this work, we propose several measures which enable a pragmatic differentiation of taggers by their degree of contribution to emerging semantic structures. We distinguish between categorizers, who typically use a small set of tags as a replacement for hierarchical classification schemes, and describers, who are annotating resources with a wealth of freely associated, descriptive keywords. To study our hypothesis, we apply semantic similarity measures to 64 different partitions of a real-world and large-scale folksonomy containing different ratios of categorizers and describers. Our results not only show that "verbose" taggers are most useful for the emergence of tag semantics, but also that a subset containing only 40% of the most 'verbose' taggers can produce results that match and even outperform the semantic precision obtained from the whole dataset. Moreover, the results suggest that there exists a causal link between the pragmatics of tagging and resulting emergent semantics. This work is relevant for designers and analysts of tagging systems interested (i) in fostering the semantic development of their platforms, (ii) in identifying users introducing "semantic noise", and (iii) in learning ontologies. © 2010 International World Wide Web Conference Committee (IW3C2).

关键词： Semantics

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Cross-lingual ontology mapping and its use on the multilingual semantic web

Cross-lingual ontology mapping and its use on the multilingu...

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1st International Workshop on the Multilingual Semantic Web, MSW 2010 - Co-located with the WWW 2010

作者： Fu, Bo Brennan, Rob O'Sullivan, Declan Knowledge and Data Engineering Group School of Computer Science and Statistics Trinity College Dublin College Green Dublin 2 Ireland

Ontology-based knowledge management systems enable the automatic discovery, sharing and reuse of structured data sources on the semantic web. With the emergence of multilingual ontologies, accessing knowledge across natural language barriers has become a pressing issue for the multilingual semantic web. In this paper, a semantic-oriented cross-lingual ontology mapping (SOCOM) framework is proposed to enhance interoperability of ontology-based systems that involve multilingual knowledge repositories. The contribution of cross-lingual ontology mapping is demonstrated in two use case scenarios. In addition, the notion of appropriate ontology label translation, as employed by the SOCOM framework, is examined in a cross-lingual ontology mapping experiment involving ontologies with a similar domain of interest but labelled in English and Chinese respectively. Preliminary evaluation results indicate the promise of the crosslingual mapping approach used in the SOCOM framework, and suggest that the integrated appropriate ontology label translation mechanism is effective in the facilitation of monolingual matching techniques in cross-lingual ontology mapping scenarios. Copyright is held by the author/owner(s).

关键词： Ontology

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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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2010 International Conference on Network and Service Management, CNSM 2010

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

ISBN: (纸本)9781424489084

Federated policy systems are required to support the complexity and organizational heterogeneity of the modern marketplace. The Community-based Policy Management System (CBPMS) is such a distributed policy management approach. It utilizes a tree-based capability authority model to partition and delegate federated capabilities. However CBPMS delegation chains have limitations such as: performance overheads due to distributed rule evaluation, threats from malformed or malicious federated principals and a lack of flexibility with respect to delegation chain reduction or capability authority re-partitioning. In this paper we introduce a trust management model for CBPMS that addresses all of these issues. A brief security analysis is presented and a telecommunications service management use case described. © 2010 IEEE.

关键词： Chains

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Validation of mixed-structured data using pattern mining and information extraction

Validation of mixed-structured data using pattern mining and...

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IWK 2010 Workshops: International Workshop on DERIS 2010 and the 1st International Workshop on Evolution Support for Model-Based Development and Testing, EMDT 2010 - Part of the Umbrella Conference 55th International Scientific Colloquium, IWK 2010

作者： Atzmueller, Martin Beer, Stephanie University of Kassel Knowledge and Data Engineering Kassel Germany University-Hospital of Würzburg Gastroontologics Research Group Würzburg Germany

For large-scale data mining utilizing data from ubiquitous and mixed-structured data sources, the appropriate extraction and integration into a comprehensive data-warehouse is of prime importance. Then, appropriate methods for validation and potential refinement are essential. This paper presents an approach applying data mining and information extraction methods for data validation: We apply subgroup discovery and (rule-based) information extraction for data integration and validation. The methods are integrated into an incremental process for continuous validation options. The results of a medical application demonstrate that subgroup discovery and the applied information extraction methods are well suited for mining, extracting and validating clinically relevant knowledge.

关键词： data mining

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DCU-TCD@LogCLEF 2010: Re-ranking document collections and query performance estimation

DCU-TCD@LogCLEF 2010: Re-ranking document collections and qu...

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2010 Cross Language Evaluation Forum Conference, CLEF 2010

作者： Leveling, Johannes Ghorab, M. Rami Magdy, Walid Jones, Gareth J. F. Wade, Vincent School of Computing Dublin City University Dublin 9 Ireland Knowledge and Data Engineering Group Trinity College Dublin Dublin 2 Ireland

This paper describes the collaborative participation of Dublin City University and Trinity College Dublin in LogCLEF 2010. Two sets of experiments were conducted. First, different aspects of the TEL query logs were analysed after extracting user sessions of consecutive queries on a topic. The relation between the queries and their length (number of terms) and position (first query or further reformulations) was examined in a session with respect to query performance estimators such as query scope, IDF-based measures, simplified query clarity score, and average inverse document collection frequency. Results of this analysis suggest that only some estimator values show a correlation with query length or position in the TEL logs (e.g. similarity score between collection and query). Second, the relation between three attributes was investigated: the user's country (detected from IP address), the query language, and the interface language. The investigation aimed to explore the influence of the three attributes on the user's collection selection. Moreover, the investigation involved assigning different weights to the three attributes in a scoring function that was used to re-rank the collections displayed to the user according to the language and country. The results of the collection re-ranking show a significant improvement in Mean Average Precision (MAP) over the original collection ranking of TEL. The results also indicate that the query language and interface language have more inuence than the user's country on the collections selected by the users.

关键词： Query languages

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