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Displaying 1-32 out of 32 total
Achieving Efficient Access to Large Integrated Sets of Semantic Data in Web Applications
Found in: Web Engineering, International Conference on
By Pieter Bellekens, Kees van der Sluijs, William van Woensel, Sven Casteleyn, Geert-Jan Houben
Issue Date:July 2008
pp. 52-64
Web-based systems can exploit Semantic Web-based approaches to link data and thus create applications that make the most out of the combination and integration of different sources and background knowledge. While a lot of attention is paid to the opportuni...
A Rule-based Approach to Content Delivery Adaptation in Web Information Systems
Found in: Mobile Data Management, IEEE International Conference on
By Roberto De Virgilio, Riccardo Torlone, Geert-Jan Houben
Issue Date:May 2006
pp. 21
In this paper, we present a rule-based approach supporting the automatic adaptation in Web Information Systems. The approach relies on the general notions of profile and configuration. Special rules are used to specify, in a declarative way, how to build a...
Interweaving Trend and User Modeling for Personalized News Recommendation
Found in: Web Intelligence and Intelligent Agent Technology, IEEE/WIC/ACM International Conference on
By Qi Gao,Fabian Abel,Geert-Jan Houben,Ke Tao
Issue Date:August 2011
pp. 100-103
In this paper, we study user modeling on Twitter and investigate the interplay between personal interests and public trends. To generate semantically meaningful user profiles, we present a framework that allows us to enrich the semantics of individual Twit...
Exploiting User Tags to Build a Semantic Cultural Heritage Portal
Found in: IEEE Intelligent Systems
By Kees van der Sluijs,Geert-Jan Houben
Issue Date:November 2010
pp. 84-92
Based on a metadata structure that intelligently builds a semantically linked data set, the Chi Explorer Web application discloses cultural heritage collections to the general public.
On-the-fly Data Integration for Personalized Television Recommender Systems
Found in: Web Engineering, International Conference on
By Pieter Bellekens, Kees van der Sluijs, Geert-Jan Houben, Lora Aroyo
Issue Date:July 2008
pp. 362-365
In this paper we present our iFanzy demonstrator, which aims at offering users television content in a personalized and context-sensitive way. With iFanzy we integrate different volatile content sources like video-on-demand, broadcast and Web information o...
Database Wrappers Development: Towards Automatic Generation
Found in: Software Maintenance and Reengineering, European Conference on
By Philippe Thiran, Jean-Luc Hainaut, Geert-Jan Houben
Issue Date:March 2005
pp. 207-216
Wrapping databases allows them to be reused in formerly unplanned contexts, such as web-based applications or federated systems. Indeed, a wrapper can provide external clients of an existing (legacy) database with a neutral interface and augmented capabili...
Updating Legacy Databases through Wrappers: Data Consistency Management
Found in: Reverse Engineering, Working Conference on
By Philippe Thiran, Geert-Jan Houben, Jean-Luc Hainaut, Djamal Benslimane
Issue Date:November 2004
pp. 58-67
Wrapping databases allows them to be reused in earlier unforeseen contexts, such asWeb-based applications or federated systems. Data wrappers, and more specifically updating wrappers (that not only access legacy data but also update them), can provide exte...
Adaptation and Reuse in Designing Web Information Systems
Found in: Information Technology: Coding and Computing, International Conference on
By Flavius Frasincar, Peter Barna, Geert-Jan Houben, Zoltán Fiala
Issue Date:April 2004
pp. 387
The increasing number of requirements for a Web Information System asks for an engineered process in designing such a system. In this paper we focus on two of these requirements: presentation adaptation based on user preferences/ device capabilities and re...
Visualisation of RDF(S)-based Information
Found in: Information Visualisation, International Conference on
By Alexandru Telea, Flavius Frasincar, Geert-Jan Houben
Issue Date:July 2003
pp. 294
As Resource Description Framework (RDF) reaches maturity, there is an increasing need for tools that support it. A common and natural representation for RDF data is a directed labeled graph. Although there are tools to edit and/or browse RDF graph represen...
Methodologies for Web Information System Design
Found in: Information Technology: Coding and Computing, International Conference on
By Peter Barna, Flavius Frasincar, Geert-Jan Houben, Richard Vdovjak
Issue Date:April 2003
pp. 420
The Web information space is rapidly growing in the size and the diversity of both its data and its audience. A consequence is that Web Information Systems (WIS) in many applications replace existing traditional (not Web based) information systems. Since t...
RDF/XML-based Automatic Generation of Adaptable Hypermedia Presentations
Found in: Information Technology: Coding and Computing, International Conference on
By Flavius Frasincar, Geert-Jan Houben, Peter Barna, Cristian Pau
Issue Date:April 2003
pp. 410
Hera is a design methodolog that supports the development of web information systems. It is a model-driven method that distinguishes four steps: data retrieval, application model generation, application model instance generation, and presentation data gene...
RAL: an Algebra for Querying RDF
Found in: Web Information Systems Engineering, International Conference on
By Flavius Frasincar, Geert-Jan Houben, Richard Vdovjak, Peter Barna
Issue Date:December 2002
pp. 173
To make the WWW machine-understandable there is a strong demand both for languages describing metadata and for languages querying metadata. The Resource Description Framework (RDF), a language proposed by W3C, can be used for describing metadata about (Web...
Retrieval of Volatile Database Output Through Hypermedia Applications
Found in: Hawaii International Conference on System Sciences
By Geert-Jan Houben, Paul de Bra
Issue Date:January 1999
pp. 5053
This paper reports on research on the generation of hypermedia (Web) applications for querying multimedia databases. In a WebNet97 paper we have proposed a heuristic algorithm for generating navigational structures for multimedia database output, based on ...
Recommending Venues to Visitors of City Scale Events by Continuous Predictive Social Media Analytics
Found in: IEEE Internet Computing
By Marco Balduini,Alessandro Bozzon,Emanuele Della Valle,Yi Huang,Geert-Jan Houben
Issue Date:June 2014
pp. 1
This paper demonstrates how a novel Continuous Predictive Social Media Analytics system, CP-SMA, operates in real-time on social media streams and graphs to recommend venues to visitors of geo- and temporally-bounded city scale events. By making a unique c...
Analyzing user behavior across social sharing environments
Found in: ACM Transactions on Intelligent Systems and Technology (TIST)
By Emilio Ferrara, Fabian Abel, Geert-Jan Houben, Lora Aroyo, Pasquale de Meo
Issue Date:December 2013
pp. 1-31
In this work we present an in-depth analysis of the user behaviors on different Social Sharing systems. We consider three popular platforms, Flickr, Delicious and StumbleUpon, and, by combining techniques from social network analysis with techniques from s...
Identification of useful user comments in social media: a case study on flickr commons
Found in: Proceedings of the 13th ACM/IEEE-CS joint conference on Digital libraries (JCDL '13)
By Bernhard Haslhofer, Elaheh Momeni, Geert-Jan Houben, Ke Tao
Issue Date:July 2013
pp. 1-10
Cultural institutions are increasingly opening up their repositories and contribute digital objects to social media platforms such as Flickr. In return they often receive user comments containing information that could be incorporated in their catalog reco...
Placing images on the world map: a microblog-based enrichment approach
Found in: Proceedings of the 35th international ACM SIGIR conference on Research and development in information retrieval (SIGIR '12)
By Claudia Hauff, Geert-Jan Houben
Issue Date:August 2012
pp. 691-700
Estimating the geographic location of images is a task which has received increasing attention recently. Large numbers of images uploaded to platforms such as Flickr do not contain GPS-based latitude/longitude coordinates. Obtaining such geographic informa...
Semantics + filtering + search = twitcident. exploring information in social web streams
Found in: Proceedings of the 23rd ACM conference on Hypertext and social media (HT '12)
By Claudia Hauff, Fabian Abel, Geert-Jan Houben, Ke Tao, Richard Stronkman
Issue Date:June 2012
pp. 285-294
Automatically filtering relevant information about a real-world incident from Social Web streams and making the information accessible and findable in the given context of the incident are non-trivial scientific challenges. In this paper, we engineer and e...
A semantics-based aspect-oriented approach to adaptation in web engineering
Found in: Proceedings of the 18th conference on Hypertext and hypermedia (HT '07)
By Geert-Jan Houben, Sven Casteleyn, William Van Woensel
Issue Date:September 2007
pp. 189-198
In the modern Web, users are accessing their favourite Web applications from any place, at any time and with any device. In this setting, they expect the application to user-tailor and personalize content access upon their particular needs. Exhibiting some...
Wrapper-based evolution of legacy information systems
Found in: ACM Transactions on Software Engineering and Methodology (TOSEM)
By Djamal Benslimane, Geert-Jan Houben, Jean-Luc Hainaut, Philippe Thiran
Issue Date:October 2006
pp. 329-359
System evolution most often implies the integration of legacy components, such as databases, with newly developed ones, leading to mixed architectures that suffer from severe heterogeneity problems. For instance, incorporating a new program in a legacy dat...
Preface to SMIWEP-MATeS'06: workshop held in conjunction with the 6th international conference on web engineering (ICWE2006) Palo Alto, California, USA. July 10th, 2006
Found in: Workshop proceedings of the sixth international conference on Web engineering (ICWE '06)
By Andreas Wombacher, Daniel Schwabe, Geert-Jan Houben, Oscar Corcho, Oscar Pastor, Pedro Sampaio
Issue Date:July 2006
pp. 15-es
This workshop is the result of joining the two workshops "Web Services Modeling and Implementation Using Sound Web Engineering Practices" (SMIWEP) and "Methods, Architectures & Technologies for e-Service Engineering" (MATeS), which were originally prop...
Preface to AEWSE'06
Found in: Workshop proceedings of the sixth international conference on Web engineering (ICWE '06)
By Florian Daniel, Geert-Jan Houben, Maristella Matera, Olga De Troyer, Peter Plessers, Sven Casteleyn
Issue Date:July 2006
pp. 9-es
Current Web Applications are volatile in nature, and require (frequent) changes of content, functionality, semantics, structure, navigation, presentation or implementation. Often, the application is somehow engineered at design time to be able to adapt to ...
Preface to MDWE'06
Found in: Workshop proceedings of the sixth international conference on Web engineering (ICWE '06)
By Antonio Vallecillo, Geert-Jan Houben, Gustavo Rossi
Issue Date:July 2006
pp. 1-es
In this paper we describe the aim, rationale and main objectives of the third edition of the Workshop on Model-Driven Web Engineering (MDWE2006), that was held in conjunction with ICWE 2006, in Palo Alto, California, on July 11, 2006. We also describe the ...
Hera-S: web design using sesame
Found in: Proceedings of the 6th international conference on Web engineering (ICWE '06)
By Geert-Jan Houben, Jeen Broekstra, Kees van der Sluijs, Sven Casteleyn
Issue Date:July 2006
pp. 337-344
Web application design methods traditionally aim to reduce complexity in implementing Web applications. However, these methods struggle with providing the necessary dynamics and flexibility to keep up with the increasing users' demand for personalization a...
A workflow-driven design of web information systems
Found in: Proceedings of the 6th international conference on Web engineering (ICWE '06)
By Flavius Frasincar, Geert-Jan Houben, Peter Barna
Issue Date:July 2006
pp. 321-328
The World Wide Web is a rapidly growing business environmenthosting a large number of business transactions. Methods fordesigning Web Information Systems (WIS) have adopted processmodels, typically as extensions of the navigation models they arebased on. W...
Hera presentation generator
Found in: Special interest tracks and posters of the 14th international conference on World Wide Web (WWW '05)
By Flavius Frasincar, Geert-Jan Houben, Peter Barna
Issue Date:May 2005
pp. 952-953
Semantic Web Information Systems (SWIS) are Web Information Systems that use Semantic Web technologies. Hera is a model-driven design methodology for SWIS. In Hera, models are represented in RDFS and model instances in RDF. The Hera Presentation Generator ...
HPG: a tool for presentation generation in WIS
Found in: Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters (WWW Alt. '04)
By Bas Rutten, Flavius Frasincar, Geert-Jan Houben, Peter Barna, Richard Vdovjak
Issue Date:May 2004
pp. 242-243
Web Information Systems (WIS) support the process of retrieving information from sources on the Web and of presenting them as a hypermedia presentation. Most WIS design methodologies focus on the engineering of the abstract navigation (hyperlinks). The act...
EROS: explorer for RDFS-based ontologies
Found in: Proceedings of the 2003 international conference on Intelligent user interfaces (IUI '03)
By Geert-Jan Houben, Peter Barna, Richard Vdovjak
Issue Date:January 2003
pp. 330-330
This article describes the implementation of a system that 'imagines' while a movie is being played by finding associations in the movie's content and presenting them to the viewer. This related information, in the form of images and movie clips, helps enh...
Automatic hypermedia generation for ad hoc queries on semi-structured data
Found in: Proceedings of the fifth ACM conference on Digital libraries (DL '00)
By Geert-Jan Houben, Paul De Bra
Issue Date:June 2000
pp. 240-241
This paper describes research on the automatic generation of hypermedia or Web-based presentations for semi-structured data resulting from ad-hoc queries. We identify how different aspects of adaptation, such as personalization and customization, influence...
AHAM: a Dexter-based reference model for adaptive hypermedia
Found in: Proceedings of the tenth ACM Conference on Hypertext and hypermedia : returning to our diverse roots: returning to our diverse roots (HYPERTEXT '99)
By Geert-Jan Houben, Hongjing Wu, Paul De Bra
Issue Date:February 1999
pp. 147-156
This paper discusses a semantic database approach to museum hypermedia systems based upon binary relations, with a restricted set of abstraction relationships. We describe examples of schema, queries and naviagaion aids for a prototype system designed as a...
An extensible data model for hyperdocuments
Found in: Proceedings of the ACM conference on Hypertext (ECHT '92)
By Geert-Jan Houben, Paul De Bra, Yoram Kornatzky
Issue Date:November 1992
pp. 222-231
The purpose of this panel is to bring together researchers in software engineering and hypertext and help identify the major issues in the application of hypertext technology and concepts to software engineering and vice versa.
Adaptive hypermedia: from systems to framework
Found in: ACM Computing Surveys (CSUR)
By Geert-Jan Houben, Paul De Bra, Peter Brusilovsky
Issue Date:March 1988
pp. 12-es
Static scheduling of a program represented by a directed task graph on a multiprocessor system to minimize the program completion time is a well-known problem in parallel processing. Since finding an optimal schedule is an NP-complete problem in general, r...