G. Wiederhold and J. Jannik. Composing diverse ontologies. Report, Stanford University, 1998.  Home/Search   Document Not in Database   Summary   Related Articles   Check

.... (that can be quickly described as conceptual schemes of knowledge bases) Even if there exists one day a standard knowledge representation language, it will be necessary to import, merge and exchange ontologies in such a way that the semantics of their representation language is taken care of [Wiederhold 1999]. Bringing solutions to this problem is among our ambitions. Because we think that nothing best can happen to the semantic web than having well suited languages for each task while preserving interoperability, we aim at providing a path toward this goal. This paper is a short description of the ....

Gio Wiederhold, Jan Janninck, Composing diverse ontologies, Proc. 8 th IFIP working group on databases working conference on database semantics, Rotorua (NZ), 1999 http://www-db.stanford.edu/SKC/publications/ifip99.html

....a set of tasks having complex dependencies, requiring that they be done in a particular sequence. In order to manage these processes, several researchers are investigating the use of workflows to increase the quality, reliability, accuracy, understandability and productivity of research efforts [11, 13, 19]. Workflows organize interoperating and potentially distributed data processing activities to facilitate cooperation in achieving some goal [4, 19] One of the major differences between scientific workflows and traditional workflows is that the process is discovery driven as opposed to codifying ....

.... are investigating the use of workflows to increase the quality, reliability, accuracy, understandability and productivity of research efforts [11, 13, 19] Workflows organize interoperating and potentially distributed data processing activities to facilitate cooperation in achieving some goal [4, 19]. One of the major differences between scientific workflows and traditional workflows is that the process is discovery driven as opposed to codifying rules by which an organization is run. This leads to different Source Selection expectations of the workflows flexibility, adaptability, and ....

G. Wiederhold et al., Composing Diverse Ontologies, Technical Report, Stanford University

....studies on data semantics and interoperability have stressed the importance of context to describe data content. In this domain, context is the knowledge needed to reason about another system [27] the intentional descriptions of database objects [21] and the extent of validity for an ontology [28]. For information retrieval, context provides a framework for well defined queries and consequently, it improves the matching process between a users query and the data stored in a database [22] Following the ideas of Naive Physics [29] and Naive Geography [30] it is possible to derive a common ....

Wiederhold, G. and J. Jannink. (in press), Composing Diverse Ontologies. in: 8th Working Conference on Database Semantics (DS-8). Rotorua, New Zealand, IFIP/Kluwer/Chapman & Hall.

....content providers have diverse goals and focal points that will not lead them to invest on the same area of the semantic web. Yet these areas of interest will overlap meaningfully and putting part of their content together will be required for taking advantage of them in unexpected applications [Wiederhold 1999]. Another reason arises from the observation that the web sites and web pages are more often generated on demand depending on (1) the device on which they will be displayed and (2) the preferences of the users. There is no reason why the semantic web resources would not require the same kind of ....

Gio Wiederhold, Jan Janninck, Composing diverse ontologies, Proc. 8 th IFIP working group on databases working conference on database semantics, Rotorua (NZ), 1999 http://www-db.stanford.edu/SKC/publications/ifip99.html

....of this work can be shared later inside and outside the user community. Further study should investigate how to incorporate approaches that allow composition of ontologies developed by different user communities, for instance, through the use of a context algebra to compose diverse ontologies (Wiederhold and Jannink 1999) and the matching of synonym, hyponym and hypernym terms (Kashyap and Sheth 1996; Mena et al. 1996; Mena et al. 1998) Fonseca, F. 2000) Users, Ontologies and Information Sharing in Urban GIS. in: ASPRS Annual Conference, Washington, D.C. 6 ....

Wiederhold, G. and Jannink, J. (1999) Composing Diverse Ontologies. in: 8th Working Conference on Database Semantics (DS-8), Rotorua, New Zealand.

....from multiple domains without becoming experts on multiple domain ontologies. We show in this paper how to support this retrieval, facilitating the identification of relevant domain information for users unaware about the vocabulary of possible interesting domains. Techniques such as mediator [12], user models (profiles) 1] and adaptive hypermedia [11] are used for the specification of a navigation multiagent system, named Odyssey Search Engine (OSE) As stated by Krueger [15] in domain information retrieval it is advantageous to use terminology familiar to the domain. This terminology ....

Wiederhold, Gio; Jannink, Jan: "Composing Diverse Ontologies"; 8th Working Conference on Database Semantics, New Zealand, January 1999.

....some cases, ontologies exist for modeling specific aspects or parts of a domain, thereby providing a unique semantics for that part. While an ontology captures the semantics of some domain, the problem remains to mediate across different ontologies for providing the user with an integrated view [WJ98] Again a powerful integration language like F logic is needed for mediating between the ontologies. 4.2 KIND Modules The source modules of the KIND architecture, i.e. data and knowledge sources, have an associated XML DTD (Doc ument Type Definition) describing the structure of the exported ....

G. Wiederhold and J. Jannink. Composing Diverse Ontologies. Technical report, Stanford, 1998. www-db.stanford.edu/SKC/ publications/ifip99.html.

....work requires an ontological commitment from users and information providers. A further study should investigate how to incorporate approaches that allow composition of pre existing independent developed ontologies, for instance, through the use of a context algebra to compose diverse ontologies (Wiederhold and Jannink 1999) and the matching of synonym, hyponym and hypernym terms (Kashyap and Sheth 1996; Mena et al. 1996; Mena et al. 1998) ACKNOWLEDGMENTS This work was partially supported by the National Science Foundation under NSF grant numbers SBR 9700465 and IIS 9970123. Max Egenhofer s research is further ....

G. Wiederhold and J. Jannink (1999) Composing Diverse Ontologies. Stanford University, Scalable Knowledge Composition (SKC) Project, Technical Report.

....but selected results derived from them. This paper has demonstrated that ODGIS can play an important role in enabling information and knowledge sharing. A further study should examine how to incorporate approaches that allow composition of preexisting independently developed ontologies as [32], where a context algebra is proposed to compose diverse ontologies, and the OBSERVER system [33 35] where ontologies are matched using synonym, hyponym and hypernym. This is an early work and the translation of sophisticated structures like ontologies into classes is a delicate operation. ....

Wiederhold, G. and Jannink, J., "Composing Diverse Ontologies," 8th Working Conference on Database Semantics (DS-8), Rotorua, New Zealand, 1999.

....and it is a specialization of a domain ontology and a task ontology [17] The use of ontologies as a support for interoperability is discussed in the next section, where the proposed architecture for an ODGIS is presented. A detailed analysis of ontologies and interoperability can be found in [25, 42]. 3. ONTOLOGY DRIVEN GEOGRAPHIC INFORMATION SYSTEM An object oriented view of the world is useful to represent geographic entities. Object technology can be used as a tool for promoting interoperability. Interoperable geographic objects can be held in a container. Since objects carry both ....

Wiederhold, G. and Jannink, J., "Composing Diverse Ontologies," Stanford University 1998.

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G. Wiederhold and J. Jannik. Composing diverse ontologies. Report, Stanford University, 1998.

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G. Wiederhold and J. Jannink. Composing diverse ontologies. Technical report, Stanford University, 1998.

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G. Wiederhold and J. Jannink, "Composing Diverse Ontologies," Stanford University 1998.

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Wiederhold, G. and J. Jannink. (in press), Composing Diverse Ontologies. in: 8th Working Conference on Database Semantics (DS-8). Rotorua, New Zealand, IFIP/Kluwer/Chapman & Hall.

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