46 research outputs found
Multimedia Annotation Interoperability Framework
Multimedia systems typically contain digital documents of mixed media types, which are indexed on the basis of strongly divergent metadata standards. This severely hamplers the inter-operation of such systems. Therefore, machine understanding of metadata comming from different applications is a basic requirement for the inter-operation of distributed Multimedia systems. In this document, we present how interoperability among metadata, vocabularies/ontologies and services is enhanced using Semantic Web technologies. In addition, it provides guidelines for semantic interoperability, illustrated by use cases. Finally, it presents an overview of the most commonly used metadata standards and tools, and provides the general research direction for semantic interoperability using Semantic Web technologies
Reasoning with Very Expressive Fuzzy Description Logics
It is widely recognized today that the management of imprecision and
vagueness will yield more intelligent and realistic knowledge-based
applications. Description Logics (DLs) are a family of knowledge representation
languages that have gained considerable attention the last decade, mainly due
to their decidability and the existence of empirically high performance of
reasoning algorithms. In this paper, we extend the well known fuzzy ALC DL to
the fuzzy SHIN DL, which extends the fuzzy ALC DL with transitive role axioms
(S), inverse roles (I), role hierarchies (H) and number restrictions (N). We
illustrate why transitive role axioms are difficult to handle in the presence
of fuzzy interpretations and how to handle them properly. Then we extend these
results by adding role hierarchies and finally number restrictions. The main
contributions of the paper are the decidability proof of the fuzzy DL languages
fuzzy-SI and fuzzy-SHIN, as well as decision procedures for the knowledge base
satisfiability problem of the fuzzy-SI and fuzzy-SHIN
CultureLabs: Cultural heritage and digital technology at the service of social innovation
Studies and practice in the cultural field have long acknowledged the importance of participatory approaches for engaging visitors of cultural institutions, however, it is only recently that we are talking about steps to connecting institutional heritage with civic initiatives that can aid social cohesion and community empowerment. In dialogue with ongoing practices in this context, CultureLabs aims to develop novel methodologies and digital tools that can facilitate the organisation and wider deployment of participatory projects around cultural her - itage, focusing on the social inclusion of disadvantaged groups, and particularly of migrant communities. As a first step in this process, the CultureLabs team has conducted a series of interviews and surveys with the aim to identify and analyse the organisational needs and lessons learnt by different actors from the cultural, social, educational and public administration fields as well as the needs and viewpoints of different migrant communities. These needs have guided the design of an innovative online platform which seeks to offer a number of services for supporting more efficient and participatory governance of cultural heritage on one hand and for enabling inclusive and creative interactions with digital cultural heritage on the other. The CultureLabs platform will allow multiple and diverse stakeholders to discover and combine differ - ent resources and elements of best practices, the "ingredients", in order to form new "recipes" for social innovation according to their own needs and objectives
COPERNICUS KNOWLEDGE and INNOVATION HUBS
Copernicus, the European Space program ensures free data availability and the organisational and financial framework to provide standardized information products in its service domains atmosphere, marine, land monitoring, climate change, emergency management and human security. A key to success to the market uptake process is knowledge exchange among all actors from the various sectors involved, notably research and educational institutions, industry, and the public sector. As a successful instrument to foster and stimulate this exchange, maximize the impact and additionally boost related capacity building and training activities, the Copernicus Academy has been anchored in the European Space Strategy. The present paper highlights some key activities to leverage the potential of this dynamically growing network of experts from universities and research institutions, public and private organizations, companies, stakeholders, and increase the benefit to its members. The vision of establishing both physical implementations of regional Copernicus hubs and virtual Copernicus hubs, built on key elements of the European Innovation strategy, is discussed. Regional hubs, attached e.g. to centres of excellence, are essential to meet local needs for exchange and training to boost the user uptake. The increasing importance of virtual hubs is becoming evident as a critical means to maximise synergies among actors in the rapidly advancing technological areas. Proposed technical elements demonstrate innovative solutions to visualize and facilitate easy harvesting of the Copernicus Academy membeŕs expertise for different stakeholder and the public, and show cast possibilities of active involvement and exchange within the network