Abstract
Adaptive Hypermedia builds upon the annotation and adaptation of content. As manual annotation has proven to be the main bottleneck, all means for supporting it by reusing automatically generated metadata are helpful. In this paper we discuss two issues. The first is the integration of a generic AH authoring environment MOT into a semantic desktop environment. In this setup, the semantic desktop environment provides a rich source of automatically generated meta-data, whilst MOT provides a convenient way to enhance this meta-data manually, as needed for an adaptive course environment. Secondly, we also consider the issue of source schema heterogeneity, especially during the automatic metadata generation process, as semantic desktop metadata are generated through a lot of different tools and at different times, so that schemas are overlapping and evolving. Explicitly taking into account all versions of these schemas would require a combinatorial explosion of generation rules. This paper investigates a solution to this problem based on malleable schemas, which allow metadata generation rules to flexibly match different versions of schemas, and can thus cope with the heterogeneous and evolving desktop environment.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Beagle, http://beaglewiki.org/Main_Page
Beagle++, http://www.kbs.uni-hannover.de/beagle++/wiki/pmwiki.php
Brusilovsky, P.: Adaptive Educational Hypermedia: From generation to generation. In: Proceedings of 4th Hellenic Conference on Information and Communication Technologies in Education, Athens, Greece, September 29 - October 3, pp. 19–33 (2004)
Buneman, P., Davidson, S., Kosky, A.: Theoretical Aspects of Schema Merging. In: Pirotte, A., Delobel, C., Gottlob, G. (eds.) EDBT 1992. LNCS, vol. 580, pp. 152–167. Springer, Heidelberg (1992)
Chirita, P.-A., Costache, S., Nejdl, W., Paiu, R.: Beagle + + : Semantically enhanced searching and ranking on the desktop. In: Sure, Y., Domingue, J. (eds.) ESWC 2006. LNCS, vol. 4011, pp. 348–362. Springer, Heidelberg (2006)
Chirita, P.A., Gavriloaie, R., Ghita, S., Nejdl, W., Paiu, R.: Activity based metadata for semantic desktop search. In: Gómez-Pérez, A., Euzenat, J. (eds.) ESWC 2005. LNCS, vol. 3532, pp. 439–454. Springer, Heidelberg (2005)
Cristea, A.I., Smits, D., De Bra, P.: Writing MOT, Reading AHA! - converting between an authoring and a delivery system for adaptive educational hypermedia. In: A3EH Workshop, AIED 2005, Amsterdam, The Netherlands (July 2005)
Cristea, A.I., De Mooij, A.: Adaptive Course Authoring: My Online Teacher. In: Proceedings of ICT 2003, Papeete, French Polynesia (2003)
Cristea, A., De Mooij, A.: AOS: Layered WWW AHS Authoring Model and its corresponding Algebraic Operators. In: Proceedings of WWW 2003, Alternate Education track, Budapest, Hungary. ACM, New York (2003)
Cristea, A.I., Aroyo, L.: Adaptive Authoring of Adaptive Educational Hypermedia. In: De Bra, P., Brusilovsky, P., Conejo, R. (eds.) AH 2002. LNCS, vol. 2347, pp. 122–132. Springer, Heidelberg (2002)
Dong, X., Halevy, A.: Malleable Schemas. In: WebDB 2005, Baltimore Maryland. ACM, New York (2005), uhasselt.be/papers/P-8.pdf
Gardarin, G., Dang-Ngoc, T.-T.: Mediating the Semantic Web. 4th journal on extraction and management of knowledge, Clermont Ferrand, Université Blaise Pascal (January 20-23, 2004), http://georges.gardarin.free.fr/Articles/MediatingtheSemanticWeb.pdf
Ghita, S., Nejdl, W., Paiu, R.: Semantically rich recommendations in social networks for sharing, exchanging and ranking semantic context. In: Gil, Y., Motta, E., Benjamins, V.R., Musen, M.A. (eds.) ISWC 2005. LNCS, vol. 3729, pp. 293–307. Springer, Heidelberg (2005)
He, B., Chang, C.-C.: Statistical schema integration across the deep web. In: Proc. of SIGMOD (2003)
MOT homepage, http://wwwis.win.tue.nl/~acristea/mot.html
Pottinger, R.A.: Processing Queries and Merging Schemas in Support of Data Integration, PhD thesis, University of Washington, US (2004), www.cs.ubc.ca/~rap/publications/thesis.pdf
Schlieder, T., Naumann, F.: Approximate tree embedding for quering cml data. In: ACM SIGIR Workshop on CML and Information Retrieval
Sesame, http://www.openrdf.org/
Shasha, D., Wang, J., Shan, H., Zhang, K.: Atreegrep: Approximate searching in unordered trees. In: Proc. of International Conference on Scientific and Statistical DB Management, pp. 89–98 (2002)
Semantic Desktop, http://www.semanticdesktop.org/
Simon, B., Dolog, P., Miklós, Z., Olmedilla, D., Sintek, M.: Conceptualising Smart Spaces for Learning. Journal of Interactive Media in Education (9) (2004), (Special Issue on the Educational Semantic Web), http://www-jime.open.ac.uk/2004/9 ISSN: 1365-893X
Velegrakis, Y., Miller, R.J., Popa, L.: Mapping Adaptation under Evolving Schemas, with Yannis Velegrakis and Renee J. In: VLDB 2003, Berlin, Germany, pp. 584–595 (September 2003) (full version in VLDB Journal), http://www.almaden.ibm.com/cs/people/lucian/MappingAdaptation_VLDB03.pdf
Wordnet, http://www.cogsci.princeton.edu/wn/
Zhang, K., Wang, J., Shasha, D.: On the editing distance between undirected acyclic graphs and related problems. In: Proc. of International Symposium on Combinatorial Pattern Matching (1998)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2006 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Cristea, A., Hendrix, M., Nejdl, W. (2006). Automatic and Manual Annotation Using Flexible Schemas for Adaptation on the Semantic Desktop. In: Nejdl, W., Tochtermann, K. (eds) Innovative Approaches for Learning and Knowledge Sharing. EC-TEL 2006. Lecture Notes in Computer Science, vol 4227. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11876663_9
Download citation
DOI: https://doi.org/10.1007/11876663_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-45777-0
Online ISBN: 978-3-540-46234-7
eBook Packages: Computer ScienceComputer Science (R0)