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Tech Report kmi-02-06 Abstract


A Spreading Activation Framework for Ontology-enhanced Adaptive Information Access
Techreport ID: kmi-02-06
Date: 2002
Author(s): Md Maruf Hasan, Motta, E., Domingue, J.B., Buckingham-Shum, S., Vargas-Vera, M. and Lanzoni, M.
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This research investigates a unique Indexing Structure and Navigational Interface which make use of (1) ontology-driven knowledge (2) statistically derived indexing parameters, and (3) experts' feedback into a single Spreading Activation Framework to harness knowledge from heterogeneous knowledge assets within an organisation. Organisational ontologies capture precise knowledge about organisational entities: people, projects, activities, information sources and so on. We extract useful entities and their relationships from an ontology-driven knowledge base. We also process collections of documents (archives) accumulated in heterogeneous information-bases within an organisation and derive indexing parameters. Such information is then mapped to a weighted graph (network). The network contains three sets of nodes consists of documents, ontological entities and statistically derived entities. Document nodes are connected to both ontology-driven entities and statistically derived entities, and vice-versa with relevant weights. Retrieval is performed by spreading query-based activation into the network and selecting the most-activated nodes. Experts in the organisation either navigate the network using associative relations among nodes or with specific queries. Expert’s feedback is captured and the network weights are continuously adapted. This framework essentially combines precise knowledge (ontology-driven), non-precise knowledge (statistically driven) and Expert’s feedback (adaptation) into a single framework for adaptive information retrieval and navigation.
 
KMi Publications Event | SSSW 2013, The 10th Summer School on Ontology Engineering and the Semantic Web Journal | 25 years of knowledge acquisition
 

Future Internet is...


Future Internet
With over a billion users, today's Internet is arguably the most successful human artifact ever created. The Internet's physical infrastructure, software, and content now play an integral part of the lives of everyone on the planet, whether they interact with it directly or not. Now nearing its fifth decade, the Internet has shown remarkable resilience and flexibility in the face of ever increasing numbers of users, data volume, and changing usage patterns, but faces growing challenges in meetings the needs of our knowledge society. Globally, many major initiatives are underway to address the need for more scientific research, physical infrastructure investment, better education, and better utilisation of the Internet. Within Japan, USA and Europe major new initiatives have begun in the area.

To succeed the Future Internet will need to address a number of cross-cutting challenges including:

  • Scalability in the face of peer-to-peer traffic, decentralisation, and increased openness

  • Trust when government, medical, financial, personal data are increasingly trusted to the cloud, and middleware will increasingly use dynamic service selection

  • Interoperability of semantic data and metadata, and of services which will be dynamically orchestrated

  • Pervasive usability for users of mobile devices, different languages, cultures and physical abilities

  • Mobility for users who expect a seamless experience across spaces, devices, and velocities