@conference {poulopoulos2018a,
	title = {The Effect of Social Media Trending Topics Related to Cultural Venues{\textquoteright} Content},
	booktitle = {2018 13th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP)},
	year = {2018},
	month = {sep},
	publisher = {IEEE},
	organization = {IEEE},
	abstract = {Social media have gained the majority of attention on the Internet having an extreme number of daily visitors worldwide. The amount of information exchanged is vast, while users have become equally producers and consumers of data. Words like {\textquotedblleft}trending{\textquotedblright}, {\textquotedblleft}influencers{\textquotedblright}, {\textquotedblleft}likes{\textquotedblright} and {\textquotedblleft}viral{\textquotedblright} are in the daily agenda of data analyzers, as they are associated with factors that play an important role in the influence of social media content to its audience. These aspects are nowadays strongly taken into account by organizations that want to draw the public{\textquoteright}s attention to the content they deliver, and in this context cultural institutions have already started to take under great consideration not only their presence in social media, but also the exploitation of social media dynamics. In this paper we propose a method that can enable cultural venues to benefit from matches between their own content and ongoing discussions on social media. More specifically we extract trending topics that can be related semantically with the content of a cultural institute and examine how a venue can benefit by exploiting these matches. The proposed algorithm has been developed in the scope of the {\textquotedblleft}CrossCult{\textquotedblright} H2020 project, and has been experimentally tested by analyzing the case of Twitter in Greek language.},
	keywords = {cultural informatics, cultural venues, personalization, social media, trending topics},
	doi = {10.1109/SMAP.2018.8501878},
	author = {Vassilis Poulopoulos and Costas Vassilakis and Manolis Wallace and Angela Antoniou and Giorgos Lepouras}
}
@conference {PoulopoulosGIIS2018,
	title = {ExhiSTORY: IoT in the service of Cultural Heritage},
	booktitle = {Proceedings of the Global Information Infrastructure and Networking Symposium (GIIS 2018), Special Session on IoT and Cultural Heritage Protection},
	year = {2018},
	month = {oct},
	publisher = {IEEE},
	organization = {IEEE},
	abstract = {Creating stories for exhibitions is a fascinating and in parallel laborious task. As every exhibition is designed to tell a story, museum curators are responsible for analyzing each exhibit in order to extract messages that form a story and position accordingly the objects in correct order within the museum space. In this context, we analyze how the technological advances in the fields of sensors and the Internet of Things can be utilized in order to construct a {\textquotedblleft}smart space{\textquotedblright}, where exhibits can communicate with the visitors and to each other and can be organized automatically so that they can generate rich, personalized, coherent and highly stimulating experiences. We present the architecture of the system named {\textquotedblleft}exhiSTORY{\textquotedblright}, that intends to provide the appropriate infrastructure to be used in museums and places where exhibitions are held, in order to support smart exhibits. We discuss and analyze the architecture of the system and the ways of its application in a cultural space.},
	doi = {10.1109/GIIS.2018.8635759},
	author = {Vassilis Poulopoulos and Costas Vassilakis and Angela Antoniou and Manolis Wallace and Giorgos Lepouras and Martin Lopez Nores}
}
@article {Vassilakis_fgcs17,
	title = {exhiSTORY: Smart Exhibits That Tell Their Own Stories},
	journal = {Future Generation of Computer Systems},
	volume = {81},
	year = {2018},
	pages = {542-556},
	abstract = {Museum exhibitions are designed to tell a story; this story is woven by curators and in its context a particular aspect of each exhibit, fitting to the message that the story is intended to convey, is highlighted. Adding new exhibits to the story requires curators to identify for each exhibit its aspects that fit to the message of the story and position the exhibit at the right place in the story thread. The availability of rich semantic information for exhibits, allows for exploiting the wealth of meanings that museum exhibits express, enabling the automated or semi-automated generation of practically countless stories that can be told. Personalization algorithms can then be employed to choose from these stories the ones most suitable for each individual user, based on the semantics of the stories and information within the user profile. In this work we examine how opportunities arising from technological advances in the fields of IoT and semantics can be used to develop smart, self-organizing exhibits that cooperate with each other and provide visitors with comprehensible, rich, diverse, personalized and highly stimulating experiences. These notions are included in the design of a system named exhiSTORY, which also exploits previously ignored information and identifies previously unseen semantic links. We present the architecture of the system and discuss its application potential.},
	keywords = {Cultural heritage, IoT, personalization, Quality of Experience (QoE), Self-organizing exhibitions, semantics},
	doi = {https://doi.org/10.1016/j.future.2017.10.038},
	url = {https://www.sciencedirect.com/science/article/pii/S0167739X17324093},
	author = {Costas Vassilakis and Vassilis Poulopoulos and Angela Antoniou and Manolis Wallace and Giorgos Lepouras and Martin Lopez Nores}
}
@conference {antoniouEuromed2017,
	title = {Experiences from the development of thematic itineraries in three Greek museums (Greek title: Εμπειρίες από την ανάπτυξη θεματικών διαδρομών σε τρία Ελληνικά μουσεία)},
	booktitle = {Proceedings of the 2nd PanHellenic conference on Cultural Heritage (Euromed 2017)},
	year = {2017},
	month = {12},
	abstract = {Private museums, as well as a considerable number of public regional museums, are confined by the small exhibition space and the relatively small number of exhibits and therefore cannot develop multiple exhibitions to satisfy visitors with different interests and characteristics. In this paper we report on our experieces from developing multiple thematic itineraries in the Tegea Folklore Museum , in the Cretan open-air museum "Lychnostatis" in Heraclion, and in the Panarcadic Archaeological Museum of Tripolis. The thematic itineraries in the Tegea Folklore Museum are (a) space (b) technology and (c) clothing. In the Cretan open-air museum "Lychnostatis", the itineraries are (a) natural sciences,(b) popular art, (c) pre-industrial technology and (d) folklore. In the Panarcadic Archaeological Museum of Tripolis we have the following itineraries: (a) appearance/clothing, (b) mortality, (c) nudity, (d) religion, (e) social status, (f) education, (g) healing practices and (h) everyday life. Each itinerary exploits a subset of the available exhibits to present a selected subject and is adapted to the needs of a predetermined and focused group of the general public. The results from the application of the approach, insofar, have shown that this is a promising path, both regarding the better exploitation of the space and the exhibits of the small museums, as well as regarding the better adaptation to the interests of the visitors.},
	author = {Angela Antoniou and Costas Vassilakis and Manolis Wallace and Giorgos Lepouras and Vassilis Poulopoulos}
}
@article {katifori15a,
	title = {Effectiveness of visualization for information retrieval through ontologies with entity evolution: the impact of ontology modeling},
	journal = {International Journal of Information Retrieval Research},
	volume = {5},
	number = {2},
	year = {2015},
	pages = {26},
	abstract = {Incorporating digital tools in the business and scientific research workflows is at the moment an on-going process, challenging and demanding as every domain has its own needs in terms of data models and information retrieval methods. The information in some domains involves entity evolution, a characteristic that introduces additional tasks, such as finding all evolution stages of an entity, and poses additional requirements for the information retrieval process. In this paper, we present a user study aiming to investigate how the different aspects of ontology modelling affect the performance and effectiveness of users regarding information retrieval tasks that are carried out using visualization methods. The results of the user study are analyzed and guidelines for ontology design are offered.},
	doi = {10.4018/IJIRR.2015040104},
	author = {Akrivi Katifori and Costas Vassilakis and Giorgos Lepouras and Elena Torou}
}
@inbook {lep2007a,
	title = {Encyclopedia of Digital Government},
	year = {2007},
	pages = {1413{\textendash}1417},
	publisher = {IGI Publishing},
	organization = {IGI Publishing},
	chapter = {Reusability In Governmental Electronic Services},
	abstract = {Reusability is the degree to which a software component or other work can be used in more than one programs or software systems. e-Government is a prosperous area for the application of reusability, since the services offered to citizens from the same administration, or even different administrations, have common portions that can be developed only once and reused wherever appropriate. In this paper we present the design and implementation of an electronic service development environment which offers the potential to reuse components that have already been implemented, for the realization of new services.},
	doi = {10.4018/978-1-59140-789-8.ch216},
	author = {Giorgos Lepouras and Costas Vassilakis},
	editor = {Ari-Veikko Anttiroiko and Matti Malkia}
}
@inbook {vas2007a,
	title = {Encyclopedia of Digital Government},
	year = {2007},
	pages = {1174{\textendash}1179},
	publisher = {IGI Publishing},
	organization = {IGI Publishing},
	chapter = {The Lifecycle Of Transactional Services},
	abstract = {Transactional services are an indispensible part of e-government, since provision of services to citizens and enterprises,as well as the interaction between the government and citizens-enterprises are modelled mainly through such services. Latest quantifications, however, show that the development of such services lags behind as compared both to the expectations of citizens-enterprises and to the efforts made by governments. This can be attributed, amongst other reasons, to the "traditional" approach to electronic service development, which treats each electronic service as an isolated software project. In this paper, we propose an e-service development platform, which covers the whole lifecycle of transactional services and facilitates the analysis, development, deployment and maintenance of these services.},
	doi = {10.4018/978-1-59140-789-8.ch177},
	author = {Costas Vassilakis and Giorgos Lepouras},
	editor = {Ari-Veikko Anttiroiko and Matti Malkia}
}
@inbook {vas2006a,
	title = {Encyclopedia of E-Commerce, E-Government and Mobile Commerce},
	year = {2006},
	pages = {865{\textendash}870},
	publisher = {Idea Group Inc.},
	organization = {Idea Group Inc.},
	chapter = {Ontology for e-Government public services},
	abstract = {In this work, the usage of ontologies for meeting requirements related to e-service composition, e-service cataloguing, change management and administrative responsibility is examined. An ontology for e-government services is presented, covering various aspects of services, including administrative responsibility, meta-data, involved documents and legislation. Both the development and usage phase of the ontology are covered and directions for further exploitation of the potential offered by the ontological representation are given.},
	doi = {10.4018/978-1-59140-799-7.ch139},
	author = {Costas Vassilakis and Giorgos Lepouras},
	editor = {Mehdi Khosrow-Pour}
}
@inbook {lep2006a,
	title = {Encyclopedia of E-Commerce, E-Government and Mobile Commerce},
	year = {2006},
	pages = {1064{\textendash}1069},
	publisher = {Idea Group Inc.},
	organization = {Idea Group Inc.},
	chapter = {Tailorable e-government information systems},
	abstract = {Real-world information, knowledge and procedures after which information systems are modeled are generally of dynamic nature and subject to changes, due to the emergence of new requirements or revisions to initial specifications. E-government information systems (eGIS) present a higher degree of volatility in their environment, since requirement changes may stem from multiple sources, including legislation changes, organizational reforms, end-user needs, interoperability and distribution concerns etc. To this end, the design and implementation of eGIS must adhere to paradigms and practices that facilitate the accommodation of changes to the eGIS as they occur in the real world. In this work, we present a role-based model for designing and implementing eGIS that can dynamically accomodate changes, providing the necessary facilities for modeling multiple aspects of the same real-world entities and delivering context-specific behaviour.},
	doi = {10.4018/978-1-59140-799-7.ch171},
	author = {Giorgos Lepouras and Anya Sotiropoulou and Dimitrios Theotokis and Costas Vassilakis},
	editor = {Mehdi Khosrow-Pour}
}
@inbook {lep2006b,
	title = {Encyclopedia of E-Commerce, E-Government and Mobile Commerce},
	year = {2006},
	pages = {1{\textendash}6},
	publisher = {Idea Group Inc.},
	organization = {Idea Group Inc.},
	chapter = {Adaptive Virtual Reality Shopping Malls},
	abstract = {Firms and organizations are increasingly exploiting electronic channels to reach their customers and create new business opportunities. To this end, electronic shops have been developed, either offering products from a single firm or encompassing multiple individual electronic stores, comprising thus electronic shopping malls. Two main concerns for e-commerce are personalization and enhancement of user experience. Personalization addresses the ability to offer content tailored to the preferences of each user or user group. Preferences may be explicitly declared by the user, or derived by the system through inspecting user interaction; if the system dynamically reacts to changes of visitor behavior, it is termed as adaptive. Enhancement of user experience is another major issue in e-commerce, given that 2D-images and texts on the screen are not sufficient to provide information on products aspects such as physical dimensions, textures and manipulation feedback. Multimedia presentations can also be used as a means for .information acceleration. for promoting "really new" products. This article aims to specify a system that exploits capabilities offered by adaptation and VR technologies to offer e-shoppers personalized and enhanced experiences, while addressing challenges related to the cost, complexity and effort of building and maintaining such a system.},
	doi = {10.4018/978-1-59904-955-7.ch099},
	author = {Giorgos Lepouras and Costas Vassilakis},
	editor = {Mehdi Khosrow-Pour}
}
@article {Vassilakis200581,
	title = {Exploiting form semantics and validation checks to improve e-form layout},
	journal = {International Journal of Web Engineering and Technology},
	volume = {2},
	number = {1},
	year = {2005},
	note = {cited By (since 1996) 0},
	pages = {81-96},
	abstract = {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. This paper presents an integrated environment, which exploits data item interrelations manifested by the business rules (or validation checks), to optimise the layout of the web forms comprising a complex service. The approach is validated through its application on a tax return form e-service. Copyright Β{\textcopyright} 2005 Inderscience Enterprises Ltd.},
	keywords = {electronic services, Form layout, Form semantics, Integrated environment, Interfaces (computer), Optimization, semantics, Taxation, Usuability, Validation checks, World Wide Web},
	doi = {10.1504/IJWET.2005.007465},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-24344507764\&partnerID=40\&md5=e94b487785303410cb7bf88df9d12c86},
	author = {Costas Vassilakis and Giorgos Lepouras and S. Rouvas and P. Georgiadis}
}
@conference {Lask2001a,
	title = {e-Citizens and e-Consumers: Is There a Difference?},
	booktitle = {Proceedings of the PCHCI 2001 Workshop: "Transforming Web Surfers to E-Shoppers"},
	year = {2001},
	month = {12},
	pages = {47-50},
	abstract = {Both the business sector and the government are nowadays embracing Internet technologies in order to provide high quality on-line services to their "target groups". In both cases, service providers are trying to transform web surfers, casually visiting their web sites to seek information, to users of their electronic services, i.e. e-consumers and. e-citizens. In this paper, we address the similarities and the differences between the business and the government, when they act as service providers, with respect to the factors for successful service and the issues that must be addressed.},
	author = {Laskaridis, G. and Costas Vassilakis and Giorgos Lepouras and S. Rouvas}
}
