Events
Drift-a-LOD, EKAW, Bologna, Italy
Date: 20 November 2016
Detection, Representation and Management of Concept Drift in Linked Open Data Workshop
The continuous growth of the Linked Open Data (LOD) Cloud is extending to various new domains. In many of these, facts change continuously: political landscapes evolve, medical discoveries lead to new cures, artists form new collaborations. In terms of knowledge representation, we observe that instances change their roles, new relations appear, old ones become invalid, and classes change both their definition and member instances.
The evolution of LOD poses new challenges to interested stakeholders: LOD publishers need to detect changes in the real world and capture them in their datasets; users and applications need automated tools to adapt querying over such diachronic datasets; knowledge engineers want to understand modelling practices behind ontology changes; philosophers study drift in the meaning of words.
Given the rapidly increasing deployment of semantic technologies in today’s Web, the impact of semantic change becomes more and more relevant, since it compromises semantic interoperability and access to digital content. Whereas the semantic web field has been concerned largely with static knowledge for a long time, there is now more and more interest in time dependent content. Event modeling, event extraction, stream reasoning, and the emergence of Web Observatories are examples of that. While the infrastructure to represent and query timestamped data is coming together, there is still a lack of knowledge about how to detect that facts and concepts have changed, how to interpret changes, and how to deliver results to users in a meaningful way.
This workshop sought to form a community of researchers working on detecting, representing and managing concept drift in and for LOD, either as input or output for their acquisition, representation or modeling methods. The goal was to bring together different communities that define, identify and manage the dynamics of concepts in their knowledge bases using various "domain specific" methods (statistical inference, symbolic reasoning, natural language processing, etc.), leveraging Linked Data as a data source or as a result publishing platform.
Read more about Drift-a-LOD here
PERICLES Seminar, Göteborg Book Fair
Date: 22 September 2016
PERICLES partners and other guests held a seminar "How can we access digital objects created 20 years ago and 100 years from now?" at the Göteborg Book Fair in 2016. Music, photographs, videos, scientific data and art are all examples of content which is now stored digitally. How are the institutions that are collecting enormous amounts of digital content – libraries, museums, archives and research institutes – going to make sure that the material is accessible in the future as well? 100 years from now, will we even know what an iPod was? If our grandchildren find a CD, will they be able to listen to the music stored on it?
Participants included: Efstratios Kontopoulos, PERICLES researcher (CERTH-ITI, Center for Research & Technology Hellas), Christine Sauter, PERICLES Project Manager (King's College London), Maria Cavallin Aijmer, fil. dr. (Department of History Studies, University of Gothenburg), Sanja Halling (Digisam, Swedish National Archives), Bengt Neiss (National Library of Sweden), Göran Kristiansson (Swedish National Archives, eARD project manager). Moderator: Nasrine Olson, (The Swedish School of Library and Information Science (SSLIS) at the University of Borås).
View a recording of the PERICLES seminar at the Göteborg Book Fair
PERICLES Demonstration Workshop
Date: 22 September 2016
In the four year duration of PERICLES (2013-2017), a number of different open-source tools were developed in order to meet the challenges that were investigated and as proofs of concepts. This workshop involved the presentation of a selection of these tools. An aim of the workshop was to spread information about the knowledge gained and tools developed to facilitate sustainability and further development of the tools beyond the boundaries of the project. While the tools had successfully served their purpose within the project, their re-packaging and application to new areas, or their commercialisation, went the bounds of the project and participants were invited to take up from where the project left off to see if any of these tools could be of interest.
Both attendance at the workshop, and the uptake of the tools for use or further development, were free of charge for participants.
SuCCESS’16 - 1st Int. Workshop on Semantic Change & Evolving Semantics
Date: September 12, 2016
The aim of this half-day workshop was to explore emerging research in the areas of semantic change and evolving semantics.
Semantics differ across contexts, domains, communities and time. This has implications for communication, terminology, access to and exchange of information, problem-solving and construction of knowledge. Where there is interaction and feedback, this effect is mitigated, as it is possible to settle on a shared understanding; in contrast, the effect is particularly pronounced in asynchronous and static information. This problem is shared across many domains; some examples of areas in which the effect is particularly pronounced include cultural heritage, data curation, digital preservation, and knowledge management. One practical example is the need to respond to semantic change in ontology curation and engineering; another is the capture and treatment of context in search indexing and ranking. This workshop focussed on semantic change in these domains and closely aligned areas. The target audience was researchers with an interest in combining techniques to address evolving semantics. An aim of the workshop was to gather together a series of perspectives on the theory and relevance of semantic change across contexts and disciplines.
Workshop, From Semantics of Change to Change of Semantics
Date: 19 May 2015
Target Audiences
- Researchers/practitioners interested in metadata and semantics
- Archivists and curators of digital content
- Anyone else working on Digital Preservation
Content
- Presentation of state-of-the-art concepts and technologies in semantics, digital preservation and knowledge representation
- Information on modern approaches for ensuring the long-term digital preservation of digital resources