@article {770,
	title = {A Semantic Mixed Reality Framework for Shared Cultural Experiences Ecosystems},
	journal = {Big Data and Cognitive Computing},
	volume = {4},
	year = {2020},
	month = {4/2020},
	pages = {6},
	abstract = {This paper presents SemMR, a semantic framework for modelling interactions between human and non-human entities and managing reusable and optimized cultural experiences, towards a shared cultural experience ecosystem that might seamlessly accommodate mixed reality experiences. The SemMR framework synthesizes and integrates interaction data into semantically rich reusable structures and facilitates the interaction between different types of entities in a symbiotic way, within a large, virtual, and fully experiential open world, promoting experience sharing at the user level, as well as data/application interoperability and low-effort implementation at the software engineering level. The proposed semantic framework introduces methods for low-effort implementation and the deployment of open and reusable cultural content, applications, and tools, around the concept of cultural experience as a semantic trajectory or simply, experience as a trajectory (eX-trajectory). The methods facilitate the collection and analysis of data regarding the behaviour of users and their interaction with other users and the environment, towards optimizing eX-trajectories via reconfiguration. The SemMR framework supports the synthesis, enhancement, and recommendation of highly complex reconfigurable eX-trajectories, while using semantically integrated disparate and heterogeneous related data. Overall, this work aims to semantically manage interactions and experiences through the eX-trajectory concept, towards delivering enriched cultural experiences.},
	keywords = {cultural experience, intelligent interaction, Mixed Reality, semantics, Usability},
	doi = {https://doi.org/10.3390/bdcc4020006},
	author = {Costas Vassilakis and Konstantinos Kotis and Dimitris Spiliotopoulos and Dionisis Margaris and Vlasios Kasapakis and Christos-Nikolaos Anagnostopoulos and Georgios Santipantakis and George A. Vouros and Theodore Kotsilieris and Volha Petukhova and Andrei Malchanau and Ioanna Lykourentzou and Kaj Michael Helin and Artem Revenko and Nenad Gligoric and Boris Pokric}
}
@conference {777,
	title = {Semantics-Driven Conversational Interfaces for Museum Chatbots},
	booktitle = {Proceedings of the 22nd International Conference on Human-Computer Interaction, volume "Culture and Computing"},
	year = {2020},
	publisher = {Springer International Publishing},
	organization = {Springer International Publishing},
	abstract = {<p>This work addresses the challenges of creating usable and personalized conversational interfaces for broad, yet applicable, domains that require user engagement and learning, such as museum chatbots. Whether the chatbots are standalone or coupled with virtual agents or real-life robots, the functional requirements for interaction that targets specific learning aspects would be expected to be more or less similar. This work reports on experimental semantics-driven conversational interface design for chatbots in museum settings, targeting visitors to converse about exhibits and learn information about their style, the artists, the era, and other aspects related to them. Depending on the semantics (presentation, learning, exploration), chatbot scenarios were designed and evaluated by participants in a formative evaluation. The evaluation show that user requirement perception manifests in expectations on the semantic level, instead of just the technical level. The results between the scenarios are compared to see how the semantics considered for the design transferred to the implementation and to the user perception.</p>
},
	keywords = {chatbots, conversational interfaces, cultural technology, semantics},
	doi = {10.1007/978-3-030-50267-6_20},
	author = {Dimitris Spiliotopoulos and Konstantinos Kotis and Costas Vassilakis and Dionisis Margaris}
}
@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}
}
@article {lep2008a1,
	title = {An active blackboard for service discovery, composition and execution},
	journal = {International Journal of Electronic Governance},
	volume = {1},
	number = {3},
	year = {2008},
	pages = {275 - 295},
	publisher = {Inderscience Publishers},
	abstract = {Organisations are turning to customer-centric electronic services, oriented to servicing customers{\textquoteright} life-events. This development requires methods for automatically locating and synthesising individual services to compose complex ones that will service the customer{\textquoteright}s life-events, since manual composition, either at the customer or the organisation side, incurs functional, economic and technical problems. In this paper we present an active blackboard architecture, which automates the task of service composition based on the semantics of individual services and data dependencies between them. The blackboard incorporates registries, which facilitate service discovery and an execution engine that arranges for dynamic service composition and execution.},
	keywords = {blackboard architecture, e-government, e-services, electronic governance, electronic services, ontologies, semantics, service composition},
	doi = {10.1504/IJEG.2008.020450},
	author = {Giorgos Lepouras and Costas Vassilakis and Anya Sotiropoulou and Dimitrios Theotokis and Akrivi Katifori}
}
@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 {Vassilakis2005421,
	title = {A semantics-based consultations workbench},
	booktitle = {ITI 3rd International Conference on Information and Communications Technology, ICICT 2005 - Enabling Technologies for the New Knowledge Society},
	volume = {2005},
	year = {2005},
	note = {cited By (since 1996) 0},
	month = {12},
	pages = {421-434},
	abstract = {Econsultations constitute an effective means to inclusive and informed participation of citizens and society in policy, decision and law formulation processes, and an answer to democratic deficit issues. Econsultation platforms need to support all stages of consultation processes including agenda setting and topics raising, legislation proposal publicity, notification of developments, proposal debate and commentary, collection, analysis and synthesis of views. In this paper we present the design of an open platform assisting policy makers and the civil society in the set-up, enactment, management and federation of inclusive and informed digital consultations. The proposed platform employs semantic techniques, such as semantics, content annotation and summarization to support the consultation processes and provide targeted and digested information to participants, and facilitates tailoring of Econsultation procedures by offering basic Econsultation activities as building blocks, which can be combined according to contextual needs. The platform also enables distinct Econsultation processes to be federated, allowing the exchange of information, which may be subject to different semantic annotations and classifications, according to the rules of each Econsultation process.},
	keywords = {Classification (of information), Content annotation, Data transfer, Decision making, Econsultations, Knowledge based systems, Logic programming, Platform architecture, Public policy, Semantic technologies, semantics},
	doi = {10.1109/ITICT.2005.1609641},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33847729948\&partnerID=40\&md5=54c7a246c0ee9ae483889741a327253b},
	author = {Costas Vassilakis and D. Gouscos and P. Georgiadis}
}
