International journal of Web engineering and technology, 2005
On their route to the electronic era, organisations release on the web more and more complex form... more On their route to the electronic era, organisations release on the web more and more complex form-based services, which require users to enter numerous data items interrelated by business rules. In such a context, it is crucial to provide optimal form layouts, in order to present the service users with interfaces that facilitate their work.
Public transaction services (such as e-forms) although perceived the future of e-government have ... more Public transaction services (such as e-forms) although perceived the future of e-government have not yet realised their full potential. E-forms have a significant role in e-government, as they are the basis for implementing most of the twenty public services that all member states have to provide to their citizens and businesses. The aim of the SmartGov project is to specify, develop, deploy and evaluate a knowledge-based platform to assist public sector employees to generate online transaction services by simplifying their development, ...
Query personalization has emerged as a means to handle the issue of information volume growth, ai... more Query personalization has emerged as a means to handle the issue of information volume growth, aiming to tailor query answer results to match the goals and interests of each user. Query personalization dynamically enhances queries, based on information regarding user preferences or other contextual information; typically enhancements relate to incorporation of conditions that filter out results that are deemed of low value to the user and/or ordering results so that data of high value are presented first. In the domain of personalization, social network information can prove valuable; users’ social networks profiles, including their interests, influence from social friends, etc. can be exploited to personalize queries. In this paper, we present a query personalization algorithm, which employs collaborative filtering techniques and takes into account influence factors between social network users, leading to personalized results that are better-targeted to the user.
One of the major problems in the domain of social networks is the handling and diffusion of the v... more One of the major problems in the domain of social networks is the handling and diffusion of the vast, dynamic and disparate information created by its users. In this context, the information contributed by users can be exploited to generate recommendations for other users. Relevant recommender systems take into account static data from users' profiles, such as location, age or gender, complemented with dynamic aspects stemming from the user behavior and/or social network state such as user preferences, items' general acceptance and influence from social friends. In this paper, we enhance recommendation algorithms used in social networks by taking into account qualitative aspects of the recommended items, such as price and reliability, the influencing factors between social network users, the social network user behavior regarding their purchases in different item categories and the semantic categorization of the products to be recommended. The inclusion of these aspects leads to more accurate recommendations and diffusion of better user-targeted information. This allows for better exploitation of the limited recommendation space, and therefore online advertisement efficiency is raised.
International Journal of Web and Grid Services, 2009
WS-BPEL is widely used nowadays for specifying and executing composite business processes within ... more WS-BPEL is widely used nowadays for specifying and executing composite business processes within the Service Oriented Architecture (SOA). During the execution however, of such business processes, a number of faults stemming from the nature of SOA (e.g. network or server failures) may occur. The WS-BPEL scenario designer must therefore use the provisions offered by WS-BPEL to catch these exceptions and
2009 IEEE International Conference on Web Services, ICWS 2009, 2009
... Kareliotis Christos Dept. of Informatics and Telecommunications, University of Athens, Greece... more ... Kareliotis Christos Dept. of Informatics and Telecommunications, University of Athens, Greece ckar@di.uoa.gr Dr. Costas Vassilakis Dept. of Computer Science and Technology, University of Peloponnese, Greece costas@uop.gr Efstathios Rouvas Dept. ...
International Journal of Web and Grid Services, 2009
WS-BPEL is widely used nowadays for specifying and executing composite business processes within ... more WS-BPEL is widely used nowadays for specifying and executing composite business processes within the Service Oriented Architecture (SOA). During the execution however, of such business processes, a number of faults stemming from the nature of SOA (e.g. network or server failures) may occur. The WS-BPEL scenario designer must therefore use the provisions offered by WS-BPEL to catch these exceptions and
Governments are employing modern information and communication technologies to better serve socie... more Governments are employing modern information and communication technologies to better serve society. Raising the effectiveness of government as well as the quality of the civil service is obviously not only a matter of new technologies. It involves clear vision for the objectives, business process reengineering, business strategies for the information technology and a sense of an educational role for
International journal of Web engineering and technology, 2005
On their route to the electronic era, organisations release on the web more and more complex form... more On their route to the electronic era, organisations release on the web more and more complex form-based services, which require users to enter numerous data items interrelated by business rules. In such a context, it is crucial to provide optimal form layouts, in order to present the service users with interfaces that facilitate their work.
Public transaction services (such as e-forms) although perceived the future of e-government have ... more Public transaction services (such as e-forms) although perceived the future of e-government have not yet realised their full potential. E-forms have a significant role in e-government, as they are the basis for implementing most of the twenty public services that all member states have to provide to their citizens and businesses. The aim of the SmartGov project is to specify, develop, deploy and evaluate a knowledge-based platform to assist public sector employees to generate online transaction services by simplifying their development, ...
Query personalization has emerged as a means to handle the issue of information volume growth, ai... more Query personalization has emerged as a means to handle the issue of information volume growth, aiming to tailor query answer results to match the goals and interests of each user. Query personalization dynamically enhances queries, based on information regarding user preferences or other contextual information; typically enhancements relate to incorporation of conditions that filter out results that are deemed of low value to the user and/or ordering results so that data of high value are presented first. In the domain of personalization, social network information can prove valuable; users’ social networks profiles, including their interests, influence from social friends, etc. can be exploited to personalize queries. In this paper, we present a query personalization algorithm, which employs collaborative filtering techniques and takes into account influence factors between social network users, leading to personalized results that are better-targeted to the user.
One of the major problems in the domain of social networks is the handling and diffusion of the v... more One of the major problems in the domain of social networks is the handling and diffusion of the vast, dynamic and disparate information created by its users. In this context, the information contributed by users can be exploited to generate recommendations for other users. Relevant recommender systems take into account static data from users' profiles, such as location, age or gender, complemented with dynamic aspects stemming from the user behavior and/or social network state such as user preferences, items' general acceptance and influence from social friends. In this paper, we enhance recommendation algorithms used in social networks by taking into account qualitative aspects of the recommended items, such as price and reliability, the influencing factors between social network users, the social network user behavior regarding their purchases in different item categories and the semantic categorization of the products to be recommended. The inclusion of these aspects leads to more accurate recommendations and diffusion of better user-targeted information. This allows for better exploitation of the limited recommendation space, and therefore online advertisement efficiency is raised.
International Journal of Web and Grid Services, 2009
WS-BPEL is widely used nowadays for specifying and executing composite business processes within ... more WS-BPEL is widely used nowadays for specifying and executing composite business processes within the Service Oriented Architecture (SOA). During the execution however, of such business processes, a number of faults stemming from the nature of SOA (e.g. network or server failures) may occur. The WS-BPEL scenario designer must therefore use the provisions offered by WS-BPEL to catch these exceptions and
2009 IEEE International Conference on Web Services, ICWS 2009, 2009
... Kareliotis Christos Dept. of Informatics and Telecommunications, University of Athens, Greece... more ... Kareliotis Christos Dept. of Informatics and Telecommunications, University of Athens, Greece ckar@di.uoa.gr Dr. Costas Vassilakis Dept. of Computer Science and Technology, University of Peloponnese, Greece costas@uop.gr Efstathios Rouvas Dept. ...
International Journal of Web and Grid Services, 2009
WS-BPEL is widely used nowadays for specifying and executing composite business processes within ... more WS-BPEL is widely used nowadays for specifying and executing composite business processes within the Service Oriented Architecture (SOA). During the execution however, of such business processes, a number of faults stemming from the nature of SOA (e.g. network or server failures) may occur. The WS-BPEL scenario designer must therefore use the provisions offered by WS-BPEL to catch these exceptions and
Governments are employing modern information and communication technologies to better serve socie... more Governments are employing modern information and communication technologies to better serve society. Raising the effectiveness of government as well as the quality of the civil service is obviously not only a matter of new technologies. It involves clear vision for the objectives, business process reengineering, business strategies for the information technology and a sense of an educational role for
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Papers by Panagiotis Georgiadis