William Van Woensel

@inproceedings{VanWoensel2012,

title = {Adapting the Obtrusiveness of Service Interactions in Dynamically Discovered Environments},

author = { William Van Woensel and  Miriam Gil and  Sven Casteleyn and  Estefania Serral and  Vicente Pelechano},

editor = {Zheng, Kan and Li, Mo and Jiang, Hongbo},

url = {http://web.cs.dal.ca/~woensel/paper/Adapting the Obtrusiveness of Service Interactions in Dynamically Discovered Environments.pdf},

year  = {2012},

date = {2012-01-01},

booktitle = {Proceedings of the 9th International Conference on Mobile and Ubiquitous Systems},

pages = {250--262},

publisher = {Springer-Verlag},

address = {Beijing, China},

abstract = {Due to the ubiquity of mobile devices, mobile service interactions (e.g., agenda notifications) may occur in any situation, leading to potential obtrusiveness (e.g., while in a meeting). In order to effectively adapt interaction obtrusiveness to suit the user’s situation, the user’s different situations should be defined in an unambiguous, generic and fine-grained way, while being valid across previously unknown, dynamically discovered environments. To realize this, we put the user in charge of defining his own situations, and exploit rich, descriptive environment information for defining and determining user situations. Our concrete approach aligns and extends two approaches, namely AdaptIO and SCOUT, to autonomously adapt mobile interactions in new, dynamically discovered environments. We supply a mobile user interface for defining situations, and validate it via an initial study with end-users.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{VanWoensel:2011:GAO:1995966.1995987,

title = {A Generic Approach for On-The-Fly Adding of Context-Aware Features to Existing Websites},

author = { William Van Woensel and  Sven Casteleyn and  Olga De Troyer},

editor = {De Bra, Paul and Grø nbaek, Kaj},

url = {http://web.cs.dal.ca/~woensel/paper/A Generic Approach for On-The-Fly Adding of Context-aware Features to Existing Websites.pdf},

isbn = {978-1-4503-0256-2},

year  = {2011},

date = {2011-01-01},

booktitle = {Proceedings of the 22nd Conference on Hypertext and Hypermedia},

pages = {143--152},

publisher = {ACM},

address = {Eindhoven, Netherlands},

series = {HT '11},

abstract = {More and more, mobile devices act as personal information managers and are able to obtain rich contextual information on the user’s environment. Mobile, context-aware web applications can exploit this information to better address the needs of mobile users. Currently, such websites are either developed separately from their associated desktop-oriented version, or both versions are created simultaneously by employing methodologies that support multi-platform context-aware websites, requiring an extensive engineering effort. While these approaches provide a solution for developing new websites, they go past the plethora of existing websites. To address this issue, we present an approach for enhancing existing websites on-the-fly with context-aware features. We first discuss the requirements for such an adaptation process, and identify applicable adaptation methods to realize context-aware features. Next, we explain our generic approach, which is grounded in the use of semantic information extracted from existing websites. Finally, we present a concrete application of our approach that is based on the SCOUT framework for mobile and context-aware application development.},

keywords = {Semantic Web},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Paret2011,

title = {Efficient Querying of Distributed RDF Sources in Mobile Settings based on a Source Index Model},

author = { Elien Paret and  William Van Woensel and  Sven Casteleyn and  Beat Signer and  Olga De Troyer},

editor = {Shakshuki, Elhandi and Younas, Muhammad},

url = {http://web.cs.dal.ca/~woensel/paper/Efficient Querying of Distributed RDF Sources in Mobile Settings based on a Source Index Model.pdf},

year  = {2011},

date = {2011-01-01},

booktitle = {Proceedings of the 8th International Conference on Mobile Web Information Systems},

pages = {554--561},

publisher = {Elsevier, Procedia Computer Science},

address = {Niagara Falls, Canada},

abstract = {Recent technological developments in the area of mobile devices in combination with the ubiquity of mobile connectivity have turned handheld devices into rich mobile web clients. On the other hand, we witness an increased number of web resources that are no longer only available in HTML but also in RDF format. In order to access relevant information in a mobile setting, we often want to query a subset of this large amount of heterogeneous RDF resources based on various context factors. We present a semantic technology-based client-side solution for efficient querying of large sets of distributed RDF sources without query endpoints. Our solution continuously extracts metadata from distributed RDF sources and manages this metadata in a local Source Index Model (SIM). When a new query has to be processed, the SIM is consulted to identify, assemble and query only potentially relevant resources. We do not plan to replace existing mobile query engines, but rather build on them to efficiently and transparently query large sets of distributed online RDF sources. The evaluation of our enhanced query handler reveals significant improvements in the overall query execution time based on the proposed SIM.},

keywords = {Querying Distributed RDF, RDF indexing, SPARQL},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Paret2011a,

title = {Efficient Mobile Querying of Distributed RDF Sources},

author = { Elien Paret and  William Van Woensel and  Sven Casteleyn and  Beat Signer and  Olga De Troyer},

editor = {Antoniou, Grigoris and Grobelnik, Marko and Simperl, Elena Paslaru Bontas and Parsia, Bijan and Plexousakis, Dimitris and De Leenheer, Pieter and Pan, Jeff Z.},

url = {http://web.cs.dal.ca/~woensel/paper/Efficient Mobile Querying of Distributed RDF Sources.pdf},

year  = {2011},

date = {2011-01-01},

booktitle = {Proceedings of the 8th Extended Semantic Web Conference (Poster)},

publisher = {Springer-Verlag},

address = {Heraklion, Greece},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{VanWoensel:2011:TMQ:2050963.2050978,

title = {Transparent Mobile Querying of Online RDF sources using Semantic Indexing and Caching},

author = { William Van Woensel and  Sven Casteleyn and  Elien Paret and  Olga De Troyer},

editor = {Bouguettaya, Athman and Hauswirth, Manfred and Liu, Ling},

url = {http://web.cs.dal.ca/~woensel/paper/Transparent Mobile Querying of online RDF sources using Semantic Indexing and Caching.pdf},

isbn = {978-3-642-24433-9},

year  = {2011},

date = {2011-01-01},

booktitle = {Proceedings of the 12th International Conference on Web Information System Engineering},

pages = {185--198},

publisher = {Springer-Verlag},

address = {Sydney, Australia},

series = {WISE'11},

abstract = {Due to advancements in mobile technology and connectivity, mobile devices have become fully-fledged web clients. At the same time, more and more Semantic Web data is becoming available, to a point where it becomes usable for various mobile application scenarios. However, most applications are limited to using pre-defined query endpoints in order to access Semantic Web data, which leaves a huge part of the Semantic Web, consisting of online RDF files and semantically annotated websites, inaccessible. In this paper, we present a mobile query service for the efficient and transparent querying of large amounts of small online RDF sources. In order to achieve this, the query service relies on two key components: 1/ a lightweight semantics-based indexing scheme, to identify sources relevant to posed queries, and 2/ a caching mechanism that locally stores frequently-used data.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Casteleyn:2010:AMW:1967486.1967555,

title = {Assisting Mobile Web Users: Client-Side Injection of Context-Sensitive Cues into Websites},

author = { Sven Casteleyn and  William Van Woensel and  Olga De Troyer},

editor = {Kotsis, Gabriele and Taniar, David and Pardede, Eric and Saleh, Imad and Khalil, Ismail},

url = {http://web.cs.dal.ca/~woensel/paper/Assisting Mobile Web Users Client-Side Injection of Context-Sensitive Cues into Websites.pdf},

isbn = {978-1-4503-0421-4},

year  = {2010},

date = {2010-01-01},

booktitle = {Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services},

pages = {443--450},

publisher = {ACM},

address = {Paris, France},

series = {iiWAS '10},

abstract = {In a mobile setting, the user often browses the Web to consult information related to his current context and environment: e.g., reviews of nearby restaurants, or tourist information on visited monuments. On the other hand, the limitations of mobile devices (e.g., limited screen) and the peculiarities of mobile Web usage (e.g., walking around, driving a car) make it cumbersome to extensively browse a Web page for such useful information. In this paper, we present a client-side approach that aims to assist the mobile user in his browsing session, by correlating the Web page’s content with the mobile user’s context, and subsequently emphasizing and enriching relevant content with so-called context-sensitive cues. To achieve this, we utilize the SCOUT framework for mobile applications to model and access the user’s context, and RDFa annotations present on existing Web pages to identify Web page elements suitable to enrich with context-sensitive cues. The cues themselves are injected using existing adaptation techniques, borrowed from the field of Adaptive Hypermedia.},

keywords = {mobile application, Semantic Web},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{VanWoensel:2010:ASW:1884110.1884157,

title = {Applying Semantic Web Technology in a Mobile Setting: The Person Matcher},

author = { William Van Woensel and  Sven Casteleyn and  Olga De Troyer},

editor = {Benatallah, Boualem and Casati, Fabio and Kappel, Gerti and Rossi, Gustavo},

url = {http://web.cs.dal.ca/~woensel/paper/Applying Semantic Web technology in a Mobile Setting the Person Matcher.pdf},

isbn = {3-642-13910-8, 978-3-642-13910-9},

year  = {2010},

date = {2010-01-01},

booktitle = {Proceedings of the 10th International Conference on Web Engineering},

pages = {506--509},

publisher = {Springer-Verlag},

address = {Vienna, Austria},

series = {ICWE'10},

abstract = {In a mobile setting, users use, handle and search for online information in a different way. Two features typically desired by mobile users are tailored information delivery and context awareness. In this paper, we elaborate a demo application that is built upon the existing SCOUT framework, which supports mobile, context-aware applications. The application illustrates the use of intrinsic mobile features, such as context- and environment-awareness, and combines them with the use of Semantic Web technologies to integrate and tailor knowledge present in distributed data sources.},

keywords = {Semantic Web},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{22,

title = {A Framework for Decentralized, Context-Aware Mobile Applications Using Semantic Web Technology},

author = { William Van Woensel and Sven Casteleyn and Olga Troyer},

editor = {Meersman, Robert and Herrero, Pilar and Dillon, Tharam S.},

url = {http://web.cs.dal.ca/~woensel/paper/A Framework for Decentralized Context-Aware Mobile Applications Using Semantic Web technology.pdf},

isbn = {978-3-642-05289-7},

year  = {2009},

date = {2009-01-01},

booktitle = {Proceedings of the Confederated International Workshops and Posters on On the Move to Meaningful Internet Systems},

pages = {88--97},

publisher = {Springer-Verlag},

address = {Villamoura, Portugal},

abstract = {The recent evolution in mobile devices, combined with rapid advancements in identification techniques, has lead to new opportunities for mobile application developers: mobile applications that can be made aware of their environment and the objects in it. Additionally, by combining mobile devices and identification technology with the Web, mobile applications can be developed that exploit services and information associated with nearby objects. In this paper, we present an application framework that supports the development of such mobile applications, without having to rely on a central service to provide information on the user’s environment. Furthermore, by deploying Semantic Web technology, the integration of information from various information sources is facilitated, allowing for expressive and powerful personalized information delivery.},

keywords = {Information Personalization},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{VanWoensel2009,

title = {SCOUT: A Framework for Personalized Context-Aware Mobile Applications},

author = { William Van Woensel and  Sven Casteleyn and  Olga De Troyer},

editor = {Rossi, Gustavo},

url = {http://web.cs.dal.ca/~woensel/paper/SCOUT A Framework for Personalized Context-Aware Mobile Applications.pdf},

year  = {2009},

date = {2009-01-01},

booktitle = {Proceedings of the 9th International Conference on Web Engineering (Doctoral Consortium)},

publisher = {CEUR-WS},

address = {San Sebastian, Spain},

abstract = {The recent evolution in mobile devices, combined with rapid advancements in identification techniques, has lead to new opportunities for mobile application developers: mobile applications that can be made aware of their environment and the objects in it. Furthermore, by combining mobile devices and identification technology with the Web, mobile applications can be developed that exploit interesting services and information associated with nearby objects. We present an application framework that supports the development of such mobile applications, enabling them to become fully context-aware and capable of providing personalized information and services. Because of the decentralized nature of our approach, we allow for more flexibility and scalability, and significantly lower the threshold for third parties to benefit from our approach. Also, due to the separation of concerns and the systematic use of abstraction mechanisms, the framework supports a variety of implementation options (i.e. different identification techniques, push- or pull-based notification mechanisms, etc), while still hiding technical details from the application developer.},

keywords = {Information Personalization},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Bellekens:2008:AEA:1441421.1441554,

title = {Achieving Efficient Access to Large Integrated Sets of Semantic Data in Web Applications},

author = { Pieter Bellekens and  Kees Van Der Sluijs and  William Van Woensel and  Sven Casteleyn and  Geert-Jan Houben},

url = {http://web.cs.dal.ca/~woensel/paper/Achieving Efficient Access to Large Integrated Sets of Semantic Data in Web Applications.pdf},

isbn = {978-0-7695-3261-5},

year  = {2008},

date = {2008-01-01},

booktitle = {Proceedings of the 8th International Conference on Web Engineering},

pages = {52--64},

publisher = {IEEE Computer Society},

address = {Yorktown Heights, NY, USA},

series = {ICWE '08},

abstract = {Web-based systems exploit Semantic Web-based approaches to link data and 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 opportunities that this linking of data on the Web provides, the reality of implementing such solutions with currently available semantic technologies creates a serious engineering challenge. In developing such applications in a commercial setting, we have been confronted with requirements and conditions that show the limitations of current technologies for this type of Web applications. Using our experience from iFanzy, we illustrate in this paper the issues and steps in turning the concept of access to semantically integrated content into solutions that use available technology.},

keywords = {Query Optimization, Reasoning, Semantic Web},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{12,

title = {A Semantics-Based Aspect-Oriented Approach to Adaptation in Web Engineering},

author = { Sven Casteleyn and  William Van Woensel and  Geert-Jan Houben},

url = {http://web.cs.dal.ca/~woensel/paper/A Semantics-based Aspect-Oriented Approach to Adaptation in Web Engineering.pdf},

isbn = {978-1-59593-820-6},

year  = {2007},

date = {2007-01-01},

booktitle = {Proceedings of the 18th Conference on Hypertext and Hypermedia},

pages = {189--198},

publisher = {ACM},

address = {Manchester, UK},

abstract = {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 kind of user- and context-dependency is thus crucial in Web Engineering. In this research, we focus on separating the adaptation engineering process from regular Web engineering by applying aspect-oriented techniques. We show how semantic information and metadata associated with the content can be exploited in our aspect-oriented approach. Furthermore, the approach allows the use of global (structural) properties of the Web application in adaptation specification. We thus obtain several advantages, which are demonstrated in this paper: to control adaptation (specification) separate from (regular) Web Engineering concerns in a richer, more consistent, robust and flexible way.},

keywords = {Semantic Web},

pubstate = {published},

tppubtype = {inproceedings}

}