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Displaying 1-50 out of 55 total
An Extensible and Personalized Approach to QoS-enabled Service Discovery
Found in: Database Engineering and Applications Symposium, International
By Le-Hung Vu, Fabio Porto, Karl Aberer, Manfred Hauswirth
Issue Date:September 2007
pp. 37-45
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...
 
A Self-Organizing Architecture for Cloud by Means of Infrastructure Performance and Event Data
Found in: 2013 IEEE 5th International Conference on Cloud Computing Technology and Science (CloudCom)
By Martin Serrano,Manfred Hauswirth,Nikos Kefalakis,John Soldatos
Issue Date:December 2013
pp. 481-486
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 ...
 
Finding Information through Integrated Ad-Hoc Socializing in the Virtual and Physical World
Found in: 2013 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT)
By Christian von der Weth,Manfred Hauswirth
Issue Date:November 2013
pp. 37-44
Despite the services of sophisticated search engines, there are interesting information sources which are useful but largely inaccessible to current web users. These sources are often ad-hoc, location-specific and only useful for users over short periods o...
 
DOBBS: Towards a Comprehensive Dataset to Study the Browsing Behavior of Online Users
Found in: 2013 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT)
By Christian von der Weth,Manfred Hauswirth
Issue Date:November 2013
pp. 51-56
The investigation of the browsing behavior of users has been a topic of active research since the Web started. However, new online services changed the meaning behind "browsing the Web" and require a fresh look at the problem. Platforms such as Y...
 
Open services for IoT cloud applications in the future internet
Found in: 2013 IEEE 14th International Symposium on
By Martin Serrano,Hoan Nguyen M. Quoc,Manfred Hauswirth, Wei Wang,Payam Barnaghi,Philippe Cousin
Issue Date:June 2013
pp. 1-6
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 desig...
   
Global Sensor Modeling and Constrained Application Methods Enabling Cloud-Based Open Space Smart Services
Found in: 2012 IEEE 9th Int'l Conference on Ubiquitous Intelligence & Computing / 9th Int'l Conference on Autonomic & Trusted Computing (UIC/ATC)
By Anh Le Tu'n,Hoan N. Mau Quoc,Martin Serrano,Manfred Hauswirth,John Soldatos,Thanasis Papaioannou,Karl Aberer
Issue Date:September 2012
pp. 196-203
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, cam...
 
Convergence of Utility Computing with the Internet-of-Things
Found in: 2012 Sixth International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing (IMIS)
By John Soldatos,Martin Serrano,Manfred Hauswirth
Issue Date:July 2012
pp. 874-879
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. Solu...
 
Linked Data and Live Querying for Enabling Support Platforms for Web Dataspaces
Found in: 2012 IEEE International Conference on Data Engineering Workshops (ICDEW)
By Jurgen Umbrich,Marcel Karnstedt,Josiane Xavier Parreira,Axel Polleres,Manfred Hauswirth
Issue Date:April 2012
pp. 23-28
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 ...
 
Service Offer Discovery Using Genetic Algorithms
Found in: Web Services, European Conference on
By Maciej Zaremba,Tomas Vitvar,Sami Bhiri,Manfred Hauswirth
Issue Date:September 2011
pp. 23-30
Available service descriptions are often specified using abstract definitions of service attributes. However, service consumers are mainly interested in concrete, consumable service offers which are specified using concrete values of service attributes. Se...
 
Preference-Based Discovery of Dynamically Generated Service Offers
Found in: Services Computing, IEEE International Conference on
By Maciej Zaremba,Tomas Vitvar,Sami Bhiri,Manfred Hauswirth
Issue Date:July 2011
pp. 338-345
The majority of service discovery approaches operate on abstract service descriptions. However, a single service often provides a significant number of possible service offers which are not reflected in abstract service descriptions. In this paper, we defi...
 
Creating a Virtual Personal Health Record Using Mashups
Found in: IEEE Internet Computing
By Ronan Fox, James Cooley, Manfred Hauswirth
Issue Date:July 2011
pp. 23-30
<p>In the telehealth domain, caregiver networks provide support to the patient in the community, often through a personal health record (PHR). Current PHR systems typically are used where data and services are delivered through a single integrated da...
 
Time Series Analysis of P2P Networks to Improve Data Availability
Found in: Advanced Information Networking and Applications, International Conference on
By Sanaullah Nazir, Manfred Hauswirth
Issue Date:March 2011
pp. 283-290
In this paper we present a replication approach which utilizes the availability information of nodes in the network. By performing Box-Jenkins's ARIMA model on the availability information, a prediction model is devised which helps to predict the future av...
 
Cross-Layer Optimized Data Gathering in Wireless Multimedia Sensor Networks
Found in: Computational Science and Engineering, IEEE International Conference on
By Lei Shu, Manfred Hauswirth, Lei Wang, Yan Zhang, Jong Hyuk Park
Issue Date:August 2009
pp. 961-966
Using multimedia sensor nodes can enhance the capability of wireless sensor networks (WSNs) for event description. In some scenarios, e.g., an erupting volcano, the WSNs are not deployed to work for long time. Instead, the WSNs aim to deliver continuous an...
 
From Workflow Models to Executable Web Service Interfaces
Found in: Web Services, IEEE International Conference on
By Armin Haller, Mateusz Marmolowski, Walid Gaaloul, Eyal Oren, Brahmanada Sapkota, Manfred Hauswirth
Issue Date:July 2009
pp. 131-140
Workflow models have been used and refined for years to execute processes within organisations. To deal with collaborative processes (choreographies) these internal workflow models have to be aligned with the external behaviour advertised through Web servi...
 
Discovery of Optimized Web Service Configurations Using a Hybrid Semantic and Statistical Approach
Found in: Web Services, IEEE International Conference on
By Maciej Zaremba, Jacek Migdal, Manfred Hauswirth
Issue Date:July 2009
pp. 149-156
We present a Semantic Optimized Service Discovery (SemOSD) approach capable of handling Web service search requests on a fine-grained level of detail where we augment semantic service descriptions with statistically built predictor functions. Our approach ...
 
Enabling Mobility between Context-Aware Smart Spaces
Found in: Advanced Information Networking and Applications Workshops, International Conference on
By Gearoid Hynes, Vinny Reynolds, Manfred Hauswirth
Issue Date:May 2009
pp. 255-260
This paper presents
 
NetTopo: Beyond Simulator and Visualizer for Wireless Sensor Networks
Found in: Future Generation Communication and Networking
By Lei Shu, Chun Wu, Yan Zhang, Jiming Chen, Lei Wang, Manfred Hauswirth
Issue Date:December 2008
pp. 17-20
Deploying real WSN testbed provides a realistic testing environment, and allows users to get more accurate test results. However, deploying real testbed is highly constrained by the available budget when the test needs a large scale WSN environment. By lev...
 
Geographic Routing in Wireless Multimedia Sensor Networks
Found in: Future Generation Communication and Networking
By Lei Shu, Yan Zhang, Laurence T. Yang, Yu Wang, Manfred Hauswirth
Issue Date:December 2008
pp. 68-73
In this paper, a Two-Phase geographic Greedy Forwarding (TPGF) routing algorithm is proposed in wireless multimedia sensor networks (WMSNs). TPGF is a pure geographic greedy forwarding routing algorithm, which does not include the face routing anddoes not ...
 
Developing Process Mediator for Supporting Mediated Web Service Interactions
Found in: Web Services, European Conference on
By Zhangbing Zhou, Sami Bhiri, Walid Gaaloul, Manfred Hauswirth
Issue Date:November 2008
pp. 155-164
Web service interactions lie in the core of Service Oriented Architecture. Due to the inherent autonomy, heterogeneity and continuous evolution of Web services, mediators are often needed to support service interactions to overcome possible mismatches exis...
 
Ontologising Interaction Behavior for Service-Oriented Enterprise Healthcare Integration
Found in: Web Services, European Conference on
By Ratnesh Sahay, Ronan Fox, Manfred Hauswirth
Issue Date:November 2008
pp. 165-174
In this paper we analyse the HL7 healthcare standard as an integration mechanism to connect service-oriented healthcare enterprises. Healthcare enterprises differ in their process model even if they follow same standard. This difference is due to the way i...
 
Developing Process Mediator for Web Service Interactions
Found in: Web Services, IEEE International Conference on
By Zhangbing Zhou, Sami Bhiri, Walid Gaaloul, Lei Shu, Laurentiu Vasiliu, Manfred Hauswirth
Issue Date:September 2008
pp. 828-829
Web service interactions lie in the core of SOA. Due to the autonomy, heterogeneity and continuous evolution of Web services, mediators are usually needed to support service interactions to overcome possible mismatches that may exist among business process...
 
Sharing Worldwide Sensor Network
Found in: Applications and the Internet, IEEE/IPSJ International Symposium on
By Lei Shu, Manfred Hauswirth, Long Cheng, Jian Ma, Vinny Reynolds, Lin Zhang
Issue Date:August 2008
pp. 189-192
We can envision that future sensor networks (WSNs) are ubiquitous, large-scale, interconnected, which we call worldwide sensor network (WWSN). Currently, most of the WSNs are working as isolated islands. Without sharing sensor data across different domains...
 
A Scenario-View Based Approach to Analyze External Behavior of Web Services for Supporting Mediated Service Interactions
Found in: Services Computing, IEEE International Conference on
By Zhangbing Zhou, Sami Bhiri, Lei Shu, Kaizhu Huang, Laurentiu Vasiliu, Manfred Hauswirth
Issue Date:July 2008
pp. 249-256
Web service interactions have triggered the initiative to identify and solve mismatches from a behavioral aspect. Current approaches are limited since they mainly focus on control-flow but largely ignore data-flow. In this paper, we propose an approach to ...
 
Building Application Ontologies from Descriptions of Semantic Web Services
Found in: Web Intelligence, IEEE / WIC / ACM International Conference on
By Xia Wang, Tomas Vitvar, Manfred Hauswirth, Doug Foxvog
Issue Date:November 2007
pp. 337-343
Different ontologies used in semantic web services fields raise numerous interoperation and communication problems with respect to service discovery, composition, and execution. The current approaches for ontology mediation often failed due to their lack o...
 
Semantic overlay for scalable service discovery
Found in: International Conference on Collaborative Computing: Networking, Applications and Worksharing
By Brahmananda Sapkota, Sanaullah Nazir, Tomas Vitvar, Ioan Toma, Laurentiu Vasiliu, Manfred Hauswirth
Issue Date:November 2007
pp. 387-391
Although the development of service infrastructure has gone through significant improvements over the past years addressing service dynamism, heterogeneity and distribution, it still lacks a scalable and efficient mechanisms fitting the nature of theWeb. I...
 
Formal verification of composite service recovery mechanisms consistency
Found in: International Conference on Collaborative Computing: Networking, Applications and Worksharing
By Walid Gaaloul, Sami Bhiri, Manfred Hauswirth, Mohsen Rouached, Claude Godart
Issue Date:November 2007
pp. 278-287
Due to the inherent autonomy and heterogeneity of Web services, ensuring composite services reliability remains a challenging problem. Extending the classical control flow with a transactional flow (encapsulating a set of recovery mechanisms) is widely acc...
 
Infrastructure for Data Processing in Large-Scale Interconnected Sensor Networks
Found in: Mobile Data Management, IEEE International Conference on
By Karl Aberer, Manfred Hauswirth, Ali Salehi
Issue Date:May 2007
pp. 198-205
No summary available.
 
UniStore: Querying a DHT-based Universal Storage
Found in: Data Engineering, International Conference on
By Marcel Karnstedt, Kai-Uwe Sattler, Martin Richtarsky, Jessica Muller, Manfred Hauswirth, Roman Schmidt, Renault John
Issue Date:April 2007
pp. 1503-1504
In recent time, 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...
 
Invited Talk: Zero-Programming Sensor Network Deployment
Found in: Applications and the Internet Workshops, IEEE/IPSJ International Symposium on
By Karl Aberer, Manfred Hauswirth, Ali Salehi
Issue Date:January 2007
pp. 1
The availability of cheap and smart wireless sensing devices provides unprecedented possibilities to monitor the physical world. On the technical side these devices introduce several original research problems, many of them related to the integration of th...
 
Cost-Aware Processing of Similarity Queries in Structured Overlays
Found in: Peer-to-Peer Computing, IEEE International Conference on
By Marcel Karnstedt, Kai-Uwe Sattler, Manfred Hauswirth, Roman Schmidt
Issue Date:June 2006
pp. 81-89
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...
 
DMC--Distributed and Mobile Collaboration Workshop Report
Found in: Enabling Technologies, IEEE International Workshops on
By Manfred Hauswirth, Wolfgang Nejdl
Issue Date:June 2006
pp. 103-106
Private and business communication and collaboration is increasingly being freed from temporal and spatial constraints. Many traditional ways of interacting which required temporal or spatial coordination have given way to much more flexible and adaptive d...
 
Similarity Queries on Structured Data in Structured Overlays
Found in: Data Engineering Workshops, 22nd International Conference on
By Marcel Karnstedt, Kai-Uwe Sattler, Manfred Hauswirth, Roman Schmidt
Issue Date:April 2006
pp. 32
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...
 
The Essence of P2P: A Reference Architecture for Overlay Networks
Found in: Peer-to-Peer Computing, IEEE International Conference on
By Karl Aberer, Luc Onana Alima, Ali Ghodsi, Sarunas Girdzijauskas, Seif Haridi, Manfred Hauswirth
Issue Date:September 2005
pp. 11-20
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...
 
Range Queries in Trie-Structured Overlays
Found in: Peer-to-Peer Computing, IEEE International Conference on
By Anwitaman Datta, Manfred Hauswirth, Renault John, Roman Schmidt, Karl Aberer
Issue Date:September 2005
pp. 57-66
Among the open problems in P2P systems, support for non-trivial search predicates, standardized query languages, distributed query processing, query load balancing, and quality of query results have been identified as some of the most relevant issues. This...
 
An Overlay Network for Resource Discovery in Grids
Found in: Database and Expert Systems Applications, International Workshop on
By Manfred Hauswirth, Roman Schmidt
Issue Date:August 2005
pp. 343-348
As Grids try to achieve optimal and balanced utilization of unused resources in a distributed system, fast and efficient discovery of resource states is a key requirement. For small to medium scale Grids, solutions such as the approach in Globus work fine....
 
On P2P Collaboration Infrastructures
Found in: Enabling Technologies, IEEE International Workshops on
By Manfred Hauswirth, Ivana Podnar, Stefan Decker
Issue Date:June 2005
pp. 66-71
BSCW [8] and Groove [10] have become the two defacto standards for collaboration over the Internet. They offer a wealth of functionalities, support a variety of possible collaboration styles, and are applied frequently in research and business projects. Wh...
 
Efficient, Self-Contained Handling of Identity in Peer-to-Peer Systems
Found in: IEEE Transactions on Knowledge and Data Engineering
By Karl Aberer, Anwitaman Datta, Manfred Hauswirth
Issue Date:July 2004
pp. 858-869
<p><b>Abstract</b>—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 attri...
 
Handling Identity in Peer-to-Peer Systems
Found in: Database and Expert Systems Applications, International Workshop on
By Manfred Hauswirth, Anwitaman Datta, Karl Aberer
Issue Date:September 2003
pp. 942
Due to the limited number of available IP addresses most computers on the Internet use dynamic IP addresses which causes problems for applications that have to maintain routing tables, for example, peer-to-peer systems. To overcome this we propose unique p...
 
Updates in Highly Unreliable, Replicated Peer-to-Peer Systems
Found in: Distributed Computing Systems, International Conference on
By Anwitaman Datta, Manfred Hauswirth, Karl Aberer
Issue Date:May 2003
pp. 76
This paper studies the problem of updates in decentralised and self-organising P2P systems in which peers have low online probabilities and only local knowledge. The update strategy we propose for this environment is based on a hybrid push/pull rumor sprea...
 
Trust-Aware Cooperation
Found in: Distributed Computing Systems Workshops, International Conference on
By Zoran Despotovic, Karl Aberer, Manfred Hauswirth
Issue Date:July 2002
pp. 408
In mobile teamwork environments two basic problems exist: how to discover someone based on a profile (skills, reputations) and how to assess that person?s
   
Mobile Push: Delivering Content to Mobile Users
Found in: Distributed Computing Systems Workshops, International Conference on
By Ivana Podnar, Manfred Hauswirth, Mehdi Jazayeri
Issue Date:July 2002
pp. 563
The increasing popularity of information services that rely on content delivery in mobile environments motivates the need for a mobile push service — an efficient and flexible content dissemination service that targets mobile users. We analyze the features...
 
Improving Data Access in P2P Systems
Found in: IEEE Internet Computing
By Karl Aberer, Magdalena Punceva, Manfred Hauswirth, Roman Schmidt
Issue Date:January 2002
pp. 58-67
<p>Gridella, a P2P system based on the P-Grid approach, improves on Gnutella's search performance while reducing bandwidth requirements.</p>
 
A Cache Architecture for Modernizing the Usenet Infrastructure
Found in: Hawaii International Conference on System Sciences
By Thomas Gschwind, Manfred Hauswirth
Issue Date:January 1999
pp. 8011
Current Internet users see the combination of World-wide Web (WWW) and electronic mail as a synonym for the Internet. While WWW is excellent for easy and fast dissemination of information and email facilitates efficient communication, a means for wide-spre...
   
Beyond
Found in: E-Commerce Technology, IEEE International Conference on
By Anwitaman Datta, Manfred Hauswirth, Karl Aberer
Issue Date:June 2003
pp. 303
The huge success of eBay has proven the demand for customer-to-customer (C2C) electronic commerce. eBay is a centralized infrastructure with all its scalability problems (network bandwidth, server load, availability, etc.). In this paper we argue that C2C ...
 
Matchmaking of IaaS cloud computing offers leveraging linked data
Found in: Proceedings of the 28th Annual ACM Symposium on Applied Computing (SAC '13)
By Maciej Zaremba, Manfred Hauswirth, Sami Bhiri, Tomas Vitvar
Issue Date:March 2013
pp. 383-388
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, ...
     
Live linked open sensor database
Found in: Proceedings of the 6th International Conference on Semantic Systems (I-SEMANTICS '10)
By Danh Le-Phuoc, Josiane Xavier Parreira, Manfred Hauswirth, Michael Hausenblas, Yuanbo Han
Issue Date:September 2010
pp. 1-4
There are millions of sensors being deployed all over the world. Data generated by these sensors is provided in different formats and interfaces and is rarely associated with semantics that describe its meaning. The heterogeneity and lack of semantic descr...
     
Using Monte Carlo simulation for improving data availability in P2P network
Found in: Proceedings of the Fourteenth International Database Engineering & Applications Symposium (IDEAS '10)
By Manfred Hauswirth, Sanaullah Nazir
Issue Date:August 2010
pp. 179-185
In this paper we present a replication strategy to improve data availability in P2P Networks. The focus of the paper is to replicate data to nodes which are highly available and complement one another in terms of uptimes. This would decrease the replicatio...
     
Visualizing simulation and testbed of wireless sensor networks with NetTopo
Found in: Proceedings of the 4th ACM international workshop on Experimental evaluation and characterization (WINTECH '09)
By Lei Shu, Lei Wang, Manfred Hauswirth, Yuanfang Chen, Zhuxiu Yuan
Issue Date:September 2009
pp. 99-100
In this paper, we present an integrated framework called NetTopo for providing both simulation and visualization functions to assist the investigation of algorithms in WSNs. NetTopo provides a common virtual WSN for the purpose of interaction between senso...
     
Rapid prototyping of semantic mash-ups through semantic web pipes
Found in: Proceedings of the 18th international conference on World wide web (WWW '09)
By Axel Polleres, Christian Morbidoni, Danh Le-Phuoc, Giovanni Tummarello, Manfred Hauswirth
Issue Date:April 2009
pp. 66-66
The use of RDF data published on the Web for applications is still a cumbersome and resource-intensive task due to the limited software support and the lack of standard programming paradigms to deal with everyday problems such as combination of RDF data fr...
     
A DHT-based infrastructure for ad-hoc integration and querying of semantic data
Found in: Proceedings of the 2008 international symposium on Database engineering & applications (IDEAS '08)
By Kai-Uwe Sattler, Manfred Hauswirth, Marcel Karnstedt, Roman Schmidt
Issue Date:September 2008
pp. N/A
A crucial prerequisite for the deployment and success of Peer-to-Peer data management applications is the availability of metadata in a way that makes it easy to access and combine data from different sources and domains. In this paper, we argue for a unif...
     
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