• Home
  • Manfred Hauswirth
Manfred Hauswirth

Manfred Hauswirth
Technische Universität Berlin, Fraunhofer FOKUS · Open Distributed Systems

MSc, PhD

About

266
Publications
71,520
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
9,060
Citations
Additional affiliations
September 2014 - present
Technische Universität Berlin
Position
  • Professor (Full)
Description
  • Web research, IoT, quantum computing, semantics, stream processing
September 2014 - present
Fraunhofer Institute for Open Communication Systems FOKUS
Position
  • Head of Department
July 2006 - September 2014
National University of Ireland, Galway
Position
  • Vice-Director

Publications

Publications (266)
Preprint
Full-text available
We present CQELS 2.0, the second version of Continuous Query Evaluation over Linked Streams. CQELS 2.0 is a platform-agnostic federated execution framework towards semantic stream fusion. In this version, we introduce a novel neural-symbolic stream reasoning component that enables specifying deep neural network (DNN) based data fusion pipelines via...
Preprint
Full-text available
Stream processing and reasoning is getting considerable attention in various application domains such as IoT, Industry IoT and Smart Cities. In parallel, reasoning and knowledge-based features have attracted research into many areas of robotics, such as robotic mapping, perception and interaction. To this end, the Semantic Stream Reasoning (SSR) fr...
Poster
Full-text available
Computer Vision (CV) has recently achieved significant improvements , thanks to the evolution of deep learning. Along with advanced architectures and optimisations of deep neural networks, CV data for (cross-datasets) training, validating, and testing contributes greatly to the performance of CV models. Many CV datasets have been created for differ...
Conference Paper
Full-text available
Video streams are becoming ubiquitous in smart cities and traffic monitoring. Recent advances in computer vision with deep neural networks enable querying a rich set of visual features from these video streams. However, it is challenging to deploy these queries on edge devices due to the resource intensive nature of the computing operations of this...
Preprint
Full-text available
Semantic stream processing and reasoning refers to a set of models, principles, and techniques for analyzing and processing stream data by exploiting semantic structures that are explicitly or implicitly embedded in stream data elements. Such “semantic streams” are represented as sequences of temporal graphs linking human and machine understandable...
Article
Full-text available
Semantic interoperability for the Internet of Things (IoT) is enabled by standards and technologies from the Semantic Web. As recent research suggests a move towards decentralised IoT architectures, we have investigated the scalability and robustness of RDF (Resource Description Framework)engines that can be embedded throughout the architecture, in...
Chapter
Full-text available
The wide adoption of increasingly cheap and computationally powerful single-board computers, has triggered the emergence of new paradigms for collaborative data processing among IoT devices. Motivated by the billions of ARM chips having been shipped as IoT gateways so far, our paper proposes a novel continuous federation approach that uses RDF Stre...
Chapter
Full-text available
RDF stores provide a simple abstraction for publishing and querying data, that is becoming a norm in data sharing practice. They also empower the decentralised architecture of data publishing for the Web or IoT-driven systems. Such architecture shares a lot in common with blockchain infrastructure and technologies. Therefore, there are emerging int...
Article
Full-text available
The Resource Description Framework (RDF) represents a main ingredient and data representation format for Linked Data and the Semantic Web. It supports a generic graph-based data model and data representation format for describing things, including their relationships with other things. As the size of RDF datasets is growing fast, RDF data managemen...
Chapter
Full-text available
The Internet and the World Wide Web have transformed modern life by connecting the real world. With the massive connectivity extension of the Net to a much wider world wide web of the manifold physical objects, we are on the verge of the next evolution of the Internet, so called the Internet of Everything (IoE). However, enabling seamless interoper...
Article
Full-text available
The Internet of Things (IoT) with billions of connected devices has been generating an enormous amount of data every hour. Connecting every data item generated by IoT to the rest of the digital world to turn this data into meaningful actions will create new capabilities, richer experiences, and unprecedented economic opportunities for businesses, i...
Research
Full-text available
The Internet of Things (IoT) with billions of connected devices has been generating an enormous amount of data every hour. Connecting every data item generated by IoT to the rest of the digital world to turn this data into meaningful actions will create new capabilities, richer experiences, and unprecedented economic opportunity for businesses, ind...
Conference Paper
Full-text available
This paper presents a solution to the Grand Challenge using CQELS (Continuous Query Evaluation over Linked Stream), a general execution framework to build RDF Stream Processing engines to answer continuous analytical queries. It provides an efficient execution architecture whereby incremental computing algorithms can be implemented to boost the per...
Article
Physical-cyber-social (PCS) computing involves a holistic treatment of data, information, and knowledge from the physical, cyber, and social worlds to integrate, understand, correlate, and provide contextually relevant abstractions to humans and the applications that serve them. PCS computing extends current progress in cyber-physical, socio-techni...
Article
This paper introduces the stack for service delivery models and interoperability in the Internet of Things. The main characteristics and functional layers of the IoT stack are described. The applicability of the IoT stack is described based on particular use cases and deployed pilots. The validation of the IoT stack in terms of functionality and ad...
Article
Full-text available
Despite the proliferation of Internet-of-Things (IoT) platforms for building and deploying IoT applications in the cloud, there is still no easy way to integrate heterogeneous geographically and administratively dispersed sensors and IoT services in a semantically interoperable fashion. In this paper we provide an overview of the OpenIoT project, w...
Conference Paper
To integrate various Linked Datasets, data warehousing and live query processing provide two extremes for optimized response time and quality respectively. The first approach provides very fast responses but with low-quality because changes of original data are not immediately reflected on materialized data. The second approach provides accurate re...
Chapter
Internet of Things systems rely on the principles for service deployment and configuration based on delivery models. The predominant service delivery model for the Internet of Things architecture is a novel approach to create a global IoT system for Internet Connected Objects. While the service control loop has already been proposed (autonomics), t...
Chapter
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...
Conference Paper
Full-text available
Mobile devices are becoming a central data integration hub for personal information. Thus, an up-to-date, comprehensive and con-solidated view of this information across heterogeneous personal informa-tion spaces is required. Linked Data offers various solutions for integrat-ing personal information, but none of them comprehensively addresses the s...
Conference Paper
Full-text available
The Internet of Things(IoT) with billions of connected de- vices has been generating enormous amount data of data every hour. Connecting every data item generated by IoT to the rest of the digital world to turn this data into meaningful actions will create new capa- bilities, richer experiences, and unprecedented economic opportunity for businesses...
Article
Full-text available
Smart City solutions are currently based on multiple architectures, standards and platforms, which have led to a highly fragmented landscape. In order to allow cities to share data across systems and coordinate processes across domains, it is essential to break these silos. A way to achieve the purpose is sensor virtualization, discovery and data r...
Conference Paper
Full-text available
Recent advances in the Internet of Things (IoT) domain for deploying IoT data systems within the cloud have generated Internet-connected silos of sensor technology which make the collection and processing of sensor-generated information more complex. A viable solution to this problem is the use of local sub-servers acting as collector's hubs betwee...
Chapter
Full-text available
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...
Article
By following an analysis of the state of the art in the convergence of cloud computing and the Internet of Things IoT, this paper presents design principles for the IoT in cloud environments. A framework for on-demand establishment of IoT services based on the automated formulation of societies of internet-connected objects is described and the int...
Article
Full-text available
Getting deeper insights into the online browsing behavior of Web users has been a major research topic since the advent of the WWW. It provides useful information to optimize website design, Web browser design, search engines offerings, and online advertisement. We argue that new technologies and new services continue to have significant effects on...
Conference Paper
The management performance of cloud systems is measured by the capacity of the cloud for controlling virtual infrastructures and their capability to run parallel-computing applications and distributed-processing services independently. The challenge about how this management performance can be done more dynamically (self-organization) by means of d...
Conference Paper
Full-text available
Over the last years the Web of Data has developed into a large compendium of interlinked data sets from multiple domains. Due to the decentralised architecture of this compendium, several of these datasets contain duplicated data. Yet, so far, only little attention has been paid to the effect of duplicated data on federated querying. This work pres...
Conference Paper
Full-text available
A set of well-integrated clinical terminologies is at the core of delivering an efficient clinical trial system. The design and outcomes of a clinical trial can be improved significantly through an unambiguous and consistent set of clinical terminolo-gies used in a participating clinical institute. However, due to lack of generalised legal and tech...
Conference Paper
Existing approaches for fine-grained access control for RDF data suffer from high overhead, making them ill-suited for mobile devices. This makes it difficult to develop mobile applications that manage personal RDF data in a privacy preserving manner. In this paper we propose a new approach to realise fine-grained access control for mobile devices....
Article
Full-text available
Location-based services gained much popularity through providing users with helpful information with respect to their current location. The search and recommendation of nearby locations or places, and the navigation to a specific location are some of the most prominent location-based services. As a recent trend, virtual location-based services cons...
Conference Paper
Full-text available
Stream reasoning is an emerging research field focused on dynamic processing and continuous reasoning over huge volumes of streaming data. Finding the right trade-off between scalability and expressivity is a key challenge in this area. In this paper, we want to provide a baseline for exploring the applicability of complex reasoning to the Web of D...
Article
Full-text available
The investigation of the browsing behavior of users provides useful information to optimize web site design, web browser design, search engines offerings, and online advertisement. This has been a topic of active research since the Web started and a large body of work exists. However, new online services as well as advances in Web and mobile techno...
Article
Full-text available
Despite the services of sophisticated search engines like Google, there are a number of interesting information sources which are useful but largely inaccessible to current Web users. These information sources are often ad-hoc, location-specific and only useful for users over short periods of time, or relate to tacit knowledge of users or implicit...
Conference Paper
Internet of Things (IoT) is an emerging area that not only requires development of infrastructure but also deployment of new services capable of supporting multiple, scalable (cloud-based) and interoperable (multi-domain) applications. In the race of designing the IoT as part of the Future Internet architecture, academic and ICT's (Information and...
Conference Paper
Full-text available
IoT Cloud systems provide scalable capacity and dynamic behaviour control of virtual infrastructures for running applications, services and processes. Key aspects in this type of complex systems are the resource optimisation and the performance of dynamic management based on distributed user data metrics and/or IoT application data demands and/or r...
Conference Paper
Full-text available
Large-scale ubiquitous computing applications are rapidly emerging in the fields of pervasive healthcare, smart cities and so on. They present unprecedented challenges to state-of-the-art ubiquitous systems in the respects of accommodating fluctuating user demands, handling volatile data quality and adaptation to complex system and user contexts. D...
Conference Paper
In recent years, location based services (LBS) have become very popular. The performance of LBS depends on number of factors including how well the places are described. Though LBS enable users to tag places, users rarely do so. On the other hand, users express their interests via online social networks. The common interests of a group of people th...
Conference Paper
Cloud Computing is an elastic execution environment becoming the dominating solution for scalable and on-demand computing, and a large market of cloud providers has recently emerged. IaaS is a realisation of the Cloud Computing at the level of processing, storage and networking resources. Currently, users lack a consolidated view of the IaaS market...
Article
Full-text available
The W3C Semantic Sensor Network Incubator group (the SSN-XG) produced an OWL~2 ontology to describe sensors and observations --- the SSN ontology, available at http://purl.oclc.org/NET/ssnx/ssn. The SSN ontology can describe sensors in terms of capabilities, measurement processes, observations and deployments. This article describes the SSN ontolog...
Article
Full-text available
The Web has long exceeded its original purpose of a distributed hypertext system and has become a global, data sharing and processing platform. This development is confirmed by remarkable milestones such as the Semantic Web, Web services, social networks and mashups. In parallel with these developments on the Web, the Internet of Things (IoT), i.e....
Article
Full-text available
Mobile health apps are proliferating, but they fail to deliver on a key patient and caregiver requirement - the ability to collaborate using key phone features while leveraging existing web services. Typically, mobile health apps are for single use, proprietary, and deliver closed-world solutions. By making use of web services, both open and propri...
Chapter
Full-text available
Linked Stream Data has emerged as an effort to represent dynamic, time-dependent data streams following the principles of Linked Data. Given the increasing number of available stream data sources like sensors and social network services, Linked Stream Data allows an easy and seamless integration, not only among heterogenous stream data, but also be...
Conference Paper
Full-text available
The deployment and provisioning of intelligent systems and utility-based services will greatly benefit from a cloud-based intelligent middleware framework, which could be deployed over multiple infrastructure providers (such as smart cities, hospitals, campus and private enterprises, offices, etc.) in order to deliver on-demand access to smart serv...
Conference Paper
Despite recent advances in the IoT area for developing control systems into the cloud, the proliferation of inter-connected entities and the collection of diverse information act as the big challenges in order to provide full control over IoT devices. Solutions to the problem of formulating and managing internet-connected objects in cloud environme...
Article
Full-text available
Sensing devices are becoming the source of a large portion of the Web data. To facilitate the integration of sensed data with data from other sources, both sensor stream sources and data are being enriched with semantic descriptions, creating Linked Stream Data. Despite its enormous potential, little has been done to explore Linked Stream Data. One...
Conference Paper
Enabling the "Web of Data" has recently gained increased attention, particularly driven by the success of Linked Data. The agreed need for technologies from the database domain is therein often referred to as the "Web as a Database", a concept that is still more a vision than a reality. Meanwhile, the database community proposed the notion of datas...
Article
Full-text available
Linked Data is becoming the core part of modern Web applications and thus efficient access to structured information expressed in RDF gains paramount importance. A number of efficient local RDF stores exist already, while distributed indexing and distributed query processing over Linked Data with similar efficiency and data management features as k...
Article
Full-text available
Semantic interoperability facilitates Health Care and Life Sciences (HCLS) systems in connecting stakeholders (e.g., patient, physician, pharmacy) at various levels as well as ensure seamless use of healthcare resources (e.g., data, schema, applications). Their scope ranges from local (within, e.g., hospitals or hospital networks) to regional, nati...
Article
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 distri...
Conference Paper
People normally suffer many different kind of diseases that are strongly affected by the changing of weather. In this poster, we present a novel research work that integrating online weather information with body sensor information to monitor the health condition of patients, and providing real-time suggestion to patients to avoid sudden unexpected...
Article
The developed world is awash with sensors. However, they are typically locked into unimodal closed systems. To unleash their full potential, access to sensors should be opened such that their data and services can be integrated with data and services available in other information systems, facilitating novel applications and services that are based...
Article
A main promise of the service-oriented computing paradigm is to support a seamless interaction between service protocols. Given the inherent autonomy, heterogeneity, and continuous evolution of Web services, mismatches usually exist between service protocols. Hence, to efficiently identify and then select a suitable service protocol among functiona...
Conference Paper
Full-text available
In this paper we address the problem of scalable, native and adaptive query processing over Linked Stream Data integrated with Linked Data. Linked Stream Data consists of data generated by stream sources, e.g., sensors, enriched with semantic descriptions, following the standards proposed for Linked Data. This enables the integration of stream data...
Conference Paper
We are happy to present the papers of the 10th International Conference on Ontologies DataBases, and Applications of Semantics, ODBASE 2011, held in Heraklion, Crete (Greece), in October 2011. The ODBASE conference series provides a forum for research on the use of ontologies and data semantics in novel applications, and continues to draw a highly...