Publications de Manfred Hauswirth

OpenIoT: Open Source Internet-of-Things in the Cloud

Karl Aberer, Manfred Hauswirth, Ivana Podnar, Jean Paul Calbimonte Perez, Mehdi Riahi

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 sema ...

Springer2015

PicShark: Mitigating Metadata Scarcity Through Large-Scale P2P Collaboration

Philippe Cudré-Mauroux, Karl Aberer, Manfred Hauswirth, Adriana Budura

With the commoditization of digital devices, personal information and media sharing is becoming a key application on the pervasive Web. In such a context, data annotation rather than data production is the main bottleneck. Metadata scarcity represents a ma ...

2008

Zero-programming Sensor Network Deployment

Karl Aberer, Manfred Hauswirth, Ali Salehi

IEEE Computer Society2007

UniStore: Querying a DHT-based Universal Storage

Renault John Lecoultre, Manfred Hauswirth, Roman Schmidt, Jessica Müller

The idea of collecting and combining large public data sets and services became more and more popular. The special characteristics of such systems and the requirements of the participants demand for strictly decentralized solutions. However, this comes alo ...

2007

An Extensible and Personalized Approach to QoS-enabled Service Discovery

Karl Aberer, Manfred Hauswirth

We present an extensible and customizable framework for the autonomous discovery of Semantic Web services based on their QoS properties. Using semantic technologies, users can specify the QoS matching model and customize the ranking of services flexibly ac ...

2007

Infrastructure for data processing in large-scale interconnected sensor networks

Karl Aberer, Manfred Hauswirth, Ali Salehi

With the price of wireless sensor technologies diminishing rapidly we can expect large numbers of autonomous sensor networks being deployed in the near future. These sensor networks will typically not remain isolated but the need of interconnecting them on ...

IEEE Computer Society2007

Middleware support for the "Internet of Things"

Karl Aberer, Manfred Hauswirth, Ali Salehi

The ``Internet of Things'' intends to enhance items of our everyday life with information and/or processing and interconnect them, so that computers can sense, integrate, present, and react on all kinds of aspects of the physical world. As this implies tha ...

5th GI/ITG KuVS Fachgespräch "Drahtlose Sensornetze"2006

A Search Engine for QoS-enabled Discovery of Semantic Web Services

Karl Aberer, Manfred Hauswirth

Directory services are a genuine constituent of any distributed architecture which facilitate binding attributes to names and then querying this information, that is, announcing and discovering resources. In such contexts, especially in a business environm ...

2006

A middleware for fast and flexible sensor network deployment

Karl Aberer, Manfred Hauswirth, Ali Salehi

Proceedings of the International Conference on Very Large Data Bases (VLDB 2006)2006

Cost-Aware Processing of Similarity Queries in Structured Overlays

Manfred Hauswirth, Roman Schmidt

Large-scale distributed data management with P2P systems requires the existence of similarity operators for queries as we cannot assume that all users will agree on exactly the same schema and value representations and data quality problems due to spelling ...

2006

Similarity Queries on Structured Data in Structured Overlays

Manfred Hauswirth, Roman Schmidt

Structured P2P systems based on distributed hash tables are a popular choice for building large-scaled data management systems. Generally, they only support exact match queries, but data heterogeneities often demand for more complex query types, particular ...

2006

Towards P2P-based Semantic Web Service Discovery with QoS Support

Karl Aberer, Manfred Hauswirth

The growing number of web services advocates distributed discovery infrastructures which are semantics-enabled and support quality of service (QoS). In this paper, we introduce a novel approach for semantic discovery of web services in P2P-based registries ...

2006

The essence of P2P: A reference architecture for overlay networks

Karl Aberer, Manfred Hauswirth, Sarunas Girdzijauskas

The success of the P2P idea has created a huge diversity of approaches, among which overlay networks, for example, Gnutella, Kazaa, Chord, Pastry, Tapestry, P-Grid, or DKS, have received specific attention from both developers and researchers. A wide varie ...

2005

A decentralized public key infrastructure for customer-to-customer e-commerce

Karl Aberer, Anwitaman Datta, Manfred Hauswirth

Inderscience Publishers2005

Efficient processing of XPath queries with structured overlay networks

Karl Aberer, Manfred Hauswirth, Gleb Skobeltsyn

Non-trivial search predicates beyond mere equality are at the current focus of P2P research. Structured queries, as an important type of non-trivial search, have been studied extensively mainly for unstructured P2P systems so far. As unstructured P2P syste ...

Springer Verlag2005

QoS-based Service Selection and Ranking with Trust and Reputation Management

Karl Aberer, Manfred Hauswirth

QoS-based service selection mechanisms will play an essential role in service-oriented architectures, as e-Business applications want to use services that most accurately meet their requirements. Standard approaches in this field typically are based on the ...

2005

Efficient, self-contained handling of identity in Peer-to-Peer systems

Karl Aberer, Anwitaman Datta, Manfred Hauswirth

Identification is an essential building block for many services in distributed information systems. The quality and purpose of identification may differ, but the basic underlying problem is always to bind a set of attributes to an identifier in a unique an ...

2004

Advanced Peer-to-Peer Networking: The P-Grid System and its Applications

Philippe Cudré-Mauroux, Jie Wu, Zoran Despotovic, Karl Aberer, Anwitaman Datta, Manfred Hauswirth, Roman Schmidt

The limitations of client/server systems become evident in an Internet-scale distributed environment. Peer-topeer (P2P) systems offer an interesting alternative to traditional client/server systems: Every node acts both as a client and a server and “ ...

2003

Start making sense: The Chatty Web approach for global semantic agreements

Philippe Cudré-Mauroux, Karl Aberer, Manfred Hauswirth

2003

Improving Data Access in P2P Systems

Karl Aberer, Manfred Hauswirth, Roman Schmidt

The P-Grid approach enables distributed search and replication. Gridella, a P2P system based on P-Grid, improves on Gnutella’s search performance while reducing bandwidth requirements. Fu ...

2002