Prof. Dr.

Hauswirth, Manfred

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  • Publication
    Navigating through changes of a digital world
    ( 2022)
    Hauk, Nathalie
    ;
    Hauswirth, Manfred
    In this chapter, we address the question of how trust in technological development can be increased. The use of information technologies can potentially enable humanity, social justice, and the democratic process. At the same time, there are concerns that the deployment of certain technologies, e.g., AI technologies, can have unintended consequences or can even be used for malicious purposes. In this chapter, we discuss these conflicting positions.
  • Publication
  • Publication
    Non-native RDF storage engines
    ( 2017)
    Hauswirth, Manfred
    ;
    Wylot, Marcin
    ;
    Grund, Martin
    ;
    Sakr, Sharif
    ;
    Cudré-Mauroux, Philippe
    The proliferation of heterogeneous Linked Data requires data management systems to constantly improve their scalability and efficiency. Linked Data can be stored according to many different data storage models. Some of these attempt to use general purpose database storage techniques to persist Linked Data, hence they can leverage existing data processing environments (e.g., big Hadoop clusters). We therefore look at the multiplicity of Linked Data storage systems which we categorize into the following classes: relational database-based systems, NoSQL-based systems, massively parallel systems.
  • Publication
    The ubiquitous semantic web: Promises, progress and challenges
    ( 2016)
    Li, Yuan-Fang
    ;
    Pan, Jeff Z.
    ;
    Krishnaswamy, Shonali
    ;
    Hauswirth, Manfred
    ;
    Nguyen, Hai H.
    The Semantic Web represents an evolution of the World Wide Web towards one of entities and their relationships, rather than pages and links. Such a progression makes it possible to represent, integrate, query and reason about structured online data. Recent years have witnessed tremendous growth of mobile computing, represented by the widespread adoption of smart phones and tablets. The versatility of such smart devices and the capabilities of semantic technologies form a great foundation for a ubiquitous Semantic Web that will contribute to further realising the true potential of both disciplines. In this paper, the authors argue for values provided by the ubiquitous Semantic Web using a mobile service discovery scenario. They also provide a brief overview of state-of-the-art research in this emerging area. Finally, the authors conclude with a summary of challenges and important research problems.
  • Publication
    Insights on federated cloud service management and the internet of things
    ( 2014)
    Serrano, Martin
    ;
    Hauswirth, Manfred
    ;
    Soldatos, John
    ;
    Kefalakis, Nikos
  • Publication
    Internet of things strategic research and innovation agenda
    ( 2014)
    Vermesan, Ovidiu
    ;
    Friess, Peter
    ;
    Guillemin, Patrick
    ;
    Sundmaeker, Harald
    ;
    Eisenhauer, Markus
    ;
    Moessner, Klaus
    ;
    Arndt, Marilyn
    ;
    Spirito, Maurizio
    ;
    Medagliani, Paolo
    ;
    Giaffreda, Raffaele
    ;
    Gusmeroli, Sergio
    ;
    Ladid, Latif
    ;
    Serrano, Martin
    ;
    Hauswirth, Manfred
    ;
    Baldini, Gianmarco
  • Publication
    Smart manufacturing and smart agriculture
    ( 2014)
    Soldatos, John
    ;
    Kefalakis, Nikos
    ;
    Serrano, Martin
    ;
    Hauswirth, Manfred
    ;
    Zaslavsky, Arkady
    ;
    Jayaraman, Prem
    ;
    Dimitropoulos, Panagiotis
    This chapter introduces successful deployments of the OpenIoT platform in the manufacturing and farming domains by means of smart applications. OpenIoT is an award-winner open source platform for building and deployment semantically interoperable IoT deployments in the cloud. It allows the streaming and semantic unification of diverse data streams in the cloud, while at the same time offering visual tools for developing and deploying applications. The presentation of the deployments aims at providing application examples (case studies), which could be extended and replicated in the same or even other domains. The smart manufacturing application illustrates the streaming of numerous manufacturing plant sensors within a cloud infrastructure, along with their combination and use in order to dynamically define and calculate indicators of manufacturing performance. The merit of this approach is that it allows plant managers to dynamically compose and exploit the various sensors, rather than relying on a closed limited set of predefined indicators. The smart agriculture application illustrates the large-scale collection and processing of sensor-derived information for optimizing crop management. To this end, appropriate reports are created and offered to bio-plant experts, which accordingly can interpret the measure for crop optimization.
  • Publication
    A formal investigation of semantic interoperability of HCLS systems
    ( 2013)
    Sahay, Ratnesh
    ;
    Zimmermann, Antoine
    ;
    Fox, Ronan
    ;
    Polleres, Axel
    ;
    Hauswirth, Manfred
    Semantic interoperability facilitates Health Care and Life Sciences (HCLS) systems in connecting stakeholders at various levels as well as ensuring seamless use of healthcare resources. Their scope ranges from local to regional, national and cross-border. The use of semantics in delivering interoperable solution for HCLS systems is weakened by fact that an Ontology Based Information System (OBIS) has restrictions in modeling, aggregating, and interpreting global knowledge in conjunction with local information (e.g., policy, profiles). This chapter presents an example-scenario that shows such limitations and recognizes that enabling two key features, namely the type and scope of knowledge, within a knowledge base could enhance the overall effectiveness of an OBIS. This chapter provides the idea of separating knowledge bases in types with scope (e.g., global or local) of applicability. Then, it proposes two concrete solutions on this general notion. Finally, the chapter describes open research issues that may be of interest to knowledge system developers and broader research community.
  • Publication
    Estimating the completeness of range queries over structured P2P databases: Fundamentals, theory, and effective applications to distributed information systems
    ( 2012)
    Cuzzocrea, Alfredo
    ;
    Karnstedt, Marcel
    ;
    Hauswirth, Manfred
    ;
    Sattler, Kai-Uwe
    ;
    Schmidt, Roman
    Range queries are a very powerful tool in a wide range of data management systems and are vital to a multitude of applications. The hierarchy of structured overlay systems can be utilized in order to provide efficient techniques for processing them, resulting in the support of applications and techniques based on range queries in large-scale distributed information systems. On the other hand, due to the rapid development of the Web, applications based on the P2P paradigm gain more and more interest, having such systems started to evolve towards adopting standard database functionalities in terms of complex query processing support. This goes far beyond simple key lookups, as provided by standard distributed hashtables (DHTs) systems, which makes estimating the completeness of query answers a crucial challenge. Unfortunately, due to the limited knowledge and the usually best-effort characteristics, deciding about the completeness of query results, e.g., getting an idea when a query is finished or what amount of results is still missing, is very challenging. There is not only an urgent need to provide this information to the user issuing queries, but also for implementing sophisticated and efficient processing techniques based on them. In this chapter, the authors propose a method for solving this task. They discuss the applicability and quality of the estimations, present an implementation and evaluation for the P-Grid system, and show how to adapt the technique to other overlays. The authors also discuss the semantics of completeness for complex queries in P2P database systems and propose methods based on the notion of routing graphs for estimating the number of expected query answers. Finally, they discuss probabilistic guarantees for the estimated values and evaluate the proposed methods through an implemented system.
  • Publication
    An architectural blueprint for a real-world internet
    ( 2011)
    Gluhak, Alex
    ;
    Hauswirth, Manfred
    ;
    Krco, Srdjan
    ;
    Stojanovic, Nenad
    ;
    Bauer, Martin
    ;
    Nielsen, Rasmus
    ;
    Haller, Stephan
    ;
    Prasad, Neeli
    ;
    Reynolds, Vinny
    ;
    Corcho, Oscar
    Numerous projects in the area of Real-World Internet (RWI), Internet of Things (IoT), and Internet Connected Objects have proposed architectures for the systems they develop. All of these systems are faced with very similar problems in their architecture and design and interoperability among these systems is limited. To address these issues and to speed up development and deployment while at the same time reduce development and maintenance costs, reference architectures are an appropriate tool. As reference architectures require agreement among all stakeholders, they are usually developed in an incremental process. This paper presents the current status of our work on a reference architecture for the RWI as an architectural blueprint.