https://ottr.xyz/event/2021-01-28-user-forum/

This event will take place virtually on Thursday 28th January 2021 at 12:00–14:00 CET. The purpose of the event is to let users of the OTTR framework share experiences and to meet the developers behind OTTR to discuss future directions. The event should also be of interest to those that are curious to see practical uses of the OTTR framework. We also welcome input and presentations of tools and technologies that are related to OTTR.

Ontology Engineering

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Submissions are due by 31st December 2020.

https://www.journals.elsevier.com/journal-of-web-semantics/call-for-papers/ontology-based-software-architectures

Semantic technologies and knowledge-based systems are gaining momentum in society and industry. A variety of standards, techniques and tools have become available for the development, deployment, and maintenance of ontologies and related artefacts. However, the use of ontologies as an active integrating component in complex software systems is less well understood. The lack of a clear understanding of the role of an ontology in a software system is one of the major challenges to the adoption of ontologies and semantic technologies in mainstream software. This special issue solicits best practices, practitioner insights and novel theoretical contributions to architectures, techniques, orchestrations of artefacts and tools for the realisation of successful ontology-based software systems.

Topics of interest include (but are not limited to) the following:

• Ontology-based software architectures
  • development methodologies, environments and tools
  • system architecture, ontology architecture
  • management and orchestration of multiple ontology-based systems
  • design and management of artefacts (ontologies, constraints, mappings, data sources, queries, interfaces, etc.)
• Reports from real-world deployments and applications of ontology-based systems
  • lessons learned and new insights to the field
  • best practices of development, deployment and maintenance
  • benefits and costs, especially in comparison with alternative technologies
  • socio-technical aspects
• Core technologies and tools relevant for the realisation of ontology-based systems
  • ontology engineering tools and methodologies
  • ontology reasoners
  • ontology alignment and integration
  • data quality and constraints
  • ontology-based data integration
  • ontology-based data access
  • ontology-driven user interfaces, including visualisation, query interfaces, etc.

Submissions must clearly state their contributions’ role and relevance in the application, development or management of ontology-based software systems.

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He is s defending the thesis Adaptive Query Extension Suggestions for Ontology-Based Visual Query Systems.

Many modern search systems allow users to narrow down their search by applying one or more search filters to the available data. This works well until the combination of filters becomes too restrictive, and no results remain. When this happens, the user needs to backtrack and remove the filter they just added, which is very counterproductive. In order to prevent this from happening, the search system should detect and disable too restrictive filters before the user activates any of them.

Current solutions are only able to do this in some special situations, but the solution presented in this thesis is more flexible and works in any situation.

Trial Lecture

His trial lecture will be on “Combining symbolic and non-symbolic knowledge representation for explainable AI solutions”.

A video of the trial lecture is available here:

https://www.mn.uio.no/ifi/forskning/aktuelt/arrangementer/disputaser/2020/Vidar.triallecture.mp4

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