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Reusing terms and interlinking of ontologies are best practices in ontology development. We tried to lower the entry barrier to ontology development by providing a tool that is accessible from any Web browser, has extensive support for collaboration, and a highly customizable and pluggable user interface that can be adapted to any level of user expertise. These results were all encouraging. The Properties Tab provides access to the details of the properties in the ontology. Figure 1 shows the visual indication of notes attached to classes as a commenting icon. Several projects currently use this portlet. Developing ontologies in OWL:

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Each page contains several portlets e. The platform has registered users from all over the world. Users with these different roles have different interests and different requirements for the user interface.

Section 2 gives an overview of the existing Web-based ontology editors. This approach is reasonable for projects that do not require wdbprotege configurations. First, the domain experts must get familiar with knowledge modeling, or even formal underpinnings of the representation language, and ontology-editing tools. Furthermore, most projects use community-based approaches to develop ontologies.

We envision developing different strategies for merging and in certain cases asking the users to resolve the conflicts manually e. Experiences and Directions, 5th Intl. Knoodl 3 is a commercial ontology editor, built on top of a wiki platform that provides basic ontology editing features.

Protege Releases - WebProtege Beta: support for OWL 2 and OBO ontologies; content management

Users have already made overchanges in webprotgee, and created more than 40, cross-links to external ontologies by using the BioPortal Reference portlet. An analysis of collaborative patterns in large-scale ontology development projects. Changing the implementation of one service, does not imply changing the other services. OntoWiki [ 1 ] is one example of a semantic wiki that supports distributed knowledge engineering, but it also focuses more on acquisition of instance data and not the ontology or schema itself.

As the authors of the tool stress on their web-site, Neologism is not an ontology editor.

As we learn more about the way domain experts develop ontologies in a distributed setting, we can adjust the tools to support collaboration even better. Our goal in building this tool was not to offer yet another ontology editor, but rather to fill in a significant gap in the landscape of ontology tools.

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Administrators may also define other custom access policies, such as the right to enable or disable certain tabs or portlets, or to use certain functionalities in the tool. Tudorache T, Musen M. The Watched Entities portlet will display the changes and new notes of the watched entities and branches. They can also re-configure the pre-defined tabs, removing the portlets that are not useful in their projects and adding other ones.

WebProtégé: A Collaborative Ontology Editor and Knowledge Acquisition Tool for the Web

The forms are created as part of the Property Form portlet, 10 which allows the association of a property in the brta to a form field e.

The layout of tabs and portlets can be done in the user interface directly; the users can drag and drop various portlets and then save the configuration.

We tried to lower the entry barrier to ontology development by providing a tool that is accessible from any Web browser, has extensive support for collaboration, and a highly customizable and pluggable user interface that can be adapted to any level of user expertise. National Library of Medicine. This ontology allows us to create templates of configurations, to associate constraints for configuration parameters and constraints or dependencies between portlets e.

The user interface consists of several tabs pagessuch as Classes, Properties, Change History, etc. Our group has implemented an OWL-API server that supports the concurrent access to an ontology similar to source control repositories, such as SVN, using check-in and check-out operations [ 13 ].

Webproteege server has an extensible conflict-resolution mechanism. We defined some common access policies that the user interface enforces, such as ReadWriteCreate new users or Display in ontology list. The plugin infrastructure on the front end side enables developers to easily build their own portlets, forms and tabs by implementing predefined Java interfaces. Horridge M, Bechhofer S. OntoWiki—a tool for social, semantic collaboration.

All changes made by either of the clients are immediately visible in the other clients. Ontology Development for the Masses: A tab is an empty container made up of smaller components— portlets —that provide independent pieces of functionality.

We received in total 28 responses to the online questionnaire.