Vassilios Peristeras

Vassilios Peristeras
International Hellenic University · School of Science and Technology

Associate Professor

About

152
Publications
31,549
Reads
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2,344
Citations
Citations since 2016
26 Research Items
828 Citations
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2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150

Publications

Publications (152)
Article
Full-text available
Today humanity is in the midst of the massive expansion of new and fundamental technology, represented by advanced artificial intelligence (AI) systems. The ongoing revolution of these technologies and their profound impact across various sectors, has triggered discussions about the characteristics and values that should guide their use and develop...
Chapter
Full-text available
Cyberspace is slowly but surely evolving into the battlefield of the future. The rise of computational power allows not only for state-sponsored hacking groups, but for lone hackers or organizations to wreak havoc on infrastructure, either for financial or political gain. Cooperation between states, on multiple levels, is required to defend their c...
Chapter
The aim of this research is to understand what strategies, models and technologies can be deployed to transform the public administration into being more efficient, effective, fair and data-centric. To do that, the research team has carried out a set of 14 case studies in three analytical domains: the first is data strategies, policies and governan...
Article
In Europe, an open government data ecosystem is being developed. This ecosystem is implemented using various technologies and platforms. In fact, the use of a common metadata standard for describing datasets and open data portals, i.e., the DCAT-AP specification, appears as the lingua franca that connects an, otherwise, fragmented environment. In t...
Article
Full-text available
Document Management Systems (DMS) are used for decades to store large amounts of information in textual form. Their technology paradigm is based on storing vast quantities of textual information enriched with metadata to support searchability. However, this exhibits limitations as it treats textual information as black box and is based exclusively...
Chapter
E-government and the implementation of ICT technologies in the public sector has been in the center of interest for a few decades now, but it is a fact that the Covid-19 pandemic and the worldwide lockdowns have given a boost on their prosecution in our everyday lives. The aims of this study were to i) examine the implementation of digital transfor...
Article
Full-text available
The rise of the internet and computational power in recent years allowed for the exponential growth of misinformation phenomena. An issue that was a non-issue a decade ago, became a challenge for societal cohesion. The emergence of this new threat has led many stakeholders, especially in Europe, to act in order to tackle this phenomenon. This paper...
Article
Full-text available
The public sector, private firms, business community, and civil society are generating data that is high in volume, veracity, velocity and comes from a diversity of sources. This kind of data is known as big data. Public Administrations (PAs) pursue big data as “new oil” and implement data-centric policies to transform data into knowledge, to promo...
Article
The public sector, private firms, business community, and civil society are generating data that are high in volume, veracity, and velocity and come from a diversity of sources. This type of data is today known as big data. Public administrations pursue big data as “new oil” and implement data-centric policies to collect, generate, process, share,...
Article
The scale, volume, and distribution speed of disinformation raise concerns in governments, businesses, and citizens. To respond effectively to this problem, we first need to disambiguate, understand, and clearly define the phenomenon. Our online information landscape is characterized by a variety of different types of false information. There is no...
Preprint
Full-text available
The rise of the internet and computational power in recent years allowed for the exponential growth of misinformation phenomena. An issue that was a non-issue a decade ago, became a challenge for societal cohesion. The emergence of this new threat has led many stakeholders, especially in Europe, to act in order to tackle this phenomenon. This paper...
Article
Purpose This paper aims to research, identify and discuss the benefits and overall role of big data and artificial intelligence (BDAI) in the tourism sector, as this is depicted in recent literature. Design/methodology/approach A systematic literature review was conducted under the McKinsey’s Global Institute (Talwar and Koury, 2017) methodologica...
Article
This article investigates which public values are prioritized in e-government policies, what the connection is to governance approaches and how the public value prioritization can be explained. Strategic horizontal e-government policy documents are analysed from 2000 to 2018 in Belgium, the United Kingdom and the European Union. A public value typo...
Article
During the last decades, public authorities worldwide have invested heavily in electronic public services (PSs). This includes efforts for publishing information about PSs and for providing online PSs. Each of these efforts is based on an underlying PS Model, i.e. a data model developed for describing and/or developing PSs. Although many PS models...
Chapter
This paper maps the participatory process applied during the development of open government commitments by twenty-nine Open Government Partnership countries. It investigates the role and perceived value of e-participation practices and their relationship to inclusive interaction with stakeholders. The insights of the paper on the perceived value of...
Chapter
Full-text available
Blockchain technology is widely known as the technological basis on which bitcoin is built. This technology has created high expectations, as transactions of every kind are executed in a decentralized way, without the need of a trusted third-party. Blockchain real business applications are currently limited mostly to financial services but many R&D...
Chapter
In this paper, we propose a model conceptualization (Linked Open Economy - LOE) capable of exploiting the massive amount and variety of open economic data that are gradually becoming available by governments and open source communities. The main aim is to unleash the power of open data and open source systems and create a common ground to serve as...
Conference Paper
Managing Privacy and understanding the handling of personal data has turned into a fundamental right-at least for Europeans-since May 25th with the coming into force of the General Data Protection Regulation. Yet, whereas many different tools by different vendors promise companies to guarantee their compliance to GDPR in terms of consent management...
Article
Full-text available
Geospatial data and geospatial e-services require governance and coordination between different governmental organisations. This article aims to understand what governance, and specifically what coordination, is used in Belgium for geospatial e-services and data. The Belgian case, with a focus on the regions and federal administration, is researche...
Conference Paper
Public administrations are often still organised in vertical, closed silos. The lack of common data standards (common data models and reference data) for exchanging information between administrations in a cross-domain and/or cross-border setting stands in the way of digital public services and automated flow of information between public administr...
Article
Business data is high-value data and has a high reuse potential both in national and in cross-border settings. National business registers, tax authorities and others are currently holding such data. Opening up basic business data and making it available in machine-readable formats will definitely increase its reuse. In this work, the authors prese...
Article
The "Rethinking Education" EC strategy highlights the importance of learning outcomes in education. The so-called Massive Open Online Courses (MOOC) is becoming an increasingly important part of education. In this paper, we present a novel approach and proof-of-concept application to enable automatically matching MOOCs learning outcomes with learne...
Article
The rising importance of service for the global economy has resulted in a significant number of efforts to define and interpret its meaning. In this vein, this article identifies and organizes related literature following a holistic approach. The authors study service from different perspectives, both business-related and technical ones, e.g., mark...
Article
The growth of Information and Communication Technologies (ICTs) offers governments advanced methods for providing services and governing their constituency. eGovernment research aims to provide the models, technologies, and tools for more effective and efficient public administration systems as well as more participatory decision processes. In part...
Article
The divergent interpretations of data, the lack of common metadata and the absence of universal reference data hinder governments from seamless data exchange, information systems integration and the delivery of cross-border public services. To overcome this, governments develop e-Government metadata repositories to store reusable data models, schem...
Article
Semantic assets and the agreements associated with them are essential elements for organisations to understand the meaning of the information they exchange - without them this information would be of little use. In order to facilitate the access of public administrations in Europe to reusable semantic assets, the Interoperability Solutions for Euro...
Chapter
The growth of Information and Communication Technologies (ICTs) offers governments advanced methods for providing services and governing their constituency. eGovernment research aims to provide the models, technologies, and tools for more effective and efficient public administration systems as well as more participatory decision processes. In part...
Article
According to the Interoperability Solutions for European Public Administrations (ISA) Programme of the European Commission, interoperability relates to the ability of disparate organisations to interact towards mutually beneficial and agreed goals, involving the sharing of information and knowledge [1]. Semantic assets and the agreements associated...
Conference Paper
We tackle the challenges involved in converting raw government data into high-quality Linked Government Data (LGD). Our approach is centred around the idea of self-service LGD which shifts the burden of Linked Data conversion towards the data consumer. The self-service LGD is supported by a publishing pipeline that also enables sharing the results...
Article
Government data covers authoritative and valuable information about our society. Public access to government data, however, remains challenging largely due to the heterogeneity and complexity of the public information ecosystem which results in high costs for locating, decoding, inter-linking and reusing existing government data. Recently, linked d...
Article
Full-text available
Advances in Information and Communications Technology (ICT), particularly the so-called Web 2.0, are affecting all aspects of our life: How we communicate, how we shop, how we socialise, how we learn. Facilitating learning through the use of ICT, also known as eLearning, is a vital part of modern educational systems. Established pedagogical strateg...
Conference Paper
The heterogeneity of the environment in which data ex-change happens is creating many challenges during the execution of digital public services across Europe. Lack of agreement and guidance on the meaning and format of information to be exchanged between Member States are the main stumbling block. Semantic interoperability is jeopardized by differ...
Chapter
In this article the authors provide an overview of the Ecospace reference architecture which constitutes a reusable high-level representation for building Collaborative Work Environments that are interoperable, context-aware and highly personalised. Based on this architecture they have already developed a number of prototypes that at the same time...
Article
Governments and citizens alike can benefit from the development of Web 2.0 government applications. This work presents a citizen-centric public-service information portal, i.e., MyPortal.gov. The public service descriptions offered by MyPortal.gov are based on a mature public service model and are annotated using lightweight semantics. Public servi...
Article
The Public Service ontology provides researchers and practitioners with a formal, standardised and unambiguous way for modelling public services. To develop the Public Service ontology, a formal ontology development methodology was followed and a generic Public Administration (PA) service model (Peristeras and Tarabanis, 2008) was used as a bluepri...
Article
This paper introduces a reference service model (RSM) that closes the gap between two phenomenically contradictory service annotation paradigms: traditional semantic service frameworks and the emerging social annotation of services. RSM aims to (i) facilitate the semantic interlinking between services annotated using different semantic models and (...
Article
Web 2.0 social platforms (e.g., Flickr, YouTube) and Collaborative Working Environments (e.g., Microsoft SharePoint, BSCW) provide Web-based collaborative information spaces which enable common users and/or professionals to work together and share their online resources. Most of these collaborative information spaces provide role-based or group-bas...
Article
Currently, the Web is an important part of people’s personal, professional and social life and thousands of services are becoming available online to support these. Since 2005, many efforts have been made to semantically describe Web services and several models have been proposed towards this direction, e.g. OWL-S, WSMO, SAWSDL. The Web follows a d...
Conference Paper
One of government’s responsibilities is the provision of public services to its citizens, for example, education, health, transportation, and social services. Additionally, with the explosion of the Internet in the past 20 years, many citizens have moved online as their main method of communication and learning. Therefore, a logical step for govern...
Article
Although discovery of semantic web services has widely been investigated, the problems to represent the users' informal needs as formal goals and of goal-based service discovery are not addressed sufficiently well, yet. Therefore, an ontology-dependent, two-phase, and goal-based approach to discover semantic web services is proposed. It addresses t...
Conference Paper
Full-text available
This paper focuses on the emerging problem of semantic interoperability between heterogeneous cooperating Cloud platforms. We try to pave the way towards a Reference Architecture for Semantically Interoperable Clouds (RASIC). To this end, three fundamental and complementary computing paradigms, namely Cloud computing, Service Oriented Architectures...
Article
The growth of Information and Communication Technologies (ICTs) offers governments advanced methods for providing services and governing their constituency. eGovernment research aims to provide the models, technologies, and tools for more effective and efficient public administration systems as well as more participatory decision processes. In part...
Article
We observe that "LOD hubs" are emerging. They provide well-managed reference identifiers that attract a large share of the incoming links on the Web of Data and play a crucial role in data integration within communities of interest. But connecting to such hubs as part of the Linked Data publish-ing process is still a difficult task. In this paper,...
Chapter
Interoperability is one of the most challenging problems in modern cross-organizational information systems, which rely on heterogeneous information and process models. Interoperability becomes very important for e-Government information systems that support cross-organizational communication especially in a cross-border setting. The main goal in t...
Article
During the past years, governments have made significant efforts to improve both their internal processes and the services that they provide to citizens and businesses. These led to several successful e-Government applications (e.g., see www.epractice.eu). One of the most popular tools that was used by governments in order to modernize their servic...
Conference Paper
Opening public sector information has recently become a trend in many countries around the world. Online government data catalogues with national, regional or local scope act as one-stop data portals providing descriptions of available government datasets. These catalogues though remain isolated. Potential benefits from federating geographically ov...
Article
In this article the authors provide an overview of the Ecospace reference architecture which constitutes a reusable high-level representation for building Collaborative Work Environments that are interoperable, context-aware and highly personalised. Based on this architecture they have already developed a number of prototypes that at the same time...
Conference Paper
Open Government Data initiatives in the US, UK and elsewhere have made large amounts of raw data available to the public on the Web. There is enormous potential in applying Linked Data principles to these datasets. This potential currently remains largely untapped because governments lack the resources required to convert from raw data to highquali...
Conference Paper
In this paper, we present our work to identify assessment criteria for an eConsultation assessment framework and some preliminary results from the assessment of a large number of eConsultation platforms.
Conference Paper
In this paper, we briefly present the official Greek e-consultation platform OpenGov. Due to its success and mass participation, processing and summarization of contributions creates many problems. Here we propose a consultation logical model to organize contributions, and use an argument visualization tool to manually create meaningful, visual con...
Book
Semantics, in the context of information systems, allows for a rich description of information or behavioural models that improve application processing, integration, and performance. Research and development into semantic technologies is today centred around Semantic Web, which covers various areas of computer science including knowledge engineeri...
Chapter
In the E-Business and particular in the eGovernment domain special focus is often given to the demand side, i.e. the everyday practice and reality of citizen and business contacts with government and businesses. Information services available online from public administration are the first stage for e-government. This stage has drawn a great amount...
Article
Full-text available
This paper dealt with the topic of E-government and E-participation aiming to provide the technologies and tools for more efficient public administration systems and more participatory decision processes. Public administrations are considered the heaviest service industry worldwide. During the last decades, governments all over the world have under...
Conference Paper
Full-text available
Log files of online shared workspaces contain rich information that can be further analyzed. In this paper, log-file information is used to extract object-centric and user-centric social networks. The object-centric social networks are used as a means for assigning concept-based expertise elements to users based on the documents that they created,...
Conference Paper
Currently, the Web is an important part of people's personal, professional and social life and millions of services are becoming available online. At the same time many efforts are made to semantically describe Web Services and several frameworks have been proposed, i.e. WSMO, SAWSDL etc. The Web follows a decentralized architecture, thus all the s...
Conference Paper
e-Government portals suffer from various shortcomings, such as the lack of formal service models for documenting services, the complexity of the user interfaces, the badly structured content etc. In this work we start from a mature model for modelling public services and employ semantic and Web 2.0 technologies in order to develop a citizen-centric...
Article
Full-text available
This paper presents our effort to “ontologize” a conceptual public service model in order to express in a formal way domain specific semantics and create a reusable service ontology for eGovernment applications. The conceptual model we have used comes from a broader public administration domain modeling effort, called Governance Enterprise Architec...
Article
Full-text available
Collective Intelligence takes advantage of collaboration, com- petition and integration. It often uses mixed groups of humans and com- puters to research in new unexplored ways. Ontologies, which are the main building block of the Semantic Web, are usually prepared by do- main experts. We introduce a novel approach, which employs Collective Intelli...
Article
The aim of this paper is to provide a better understanding on the role of interoperability in eGovernment applications. The focus of interest is on eGovernment applications involving more than one agency or heterogeneous technical infrastructures. The main research objective is to identify a set of critical factors that influence eGovernment intero...
Article
This paper reviews the state of the art in the area of enhancing eGovernment interoperability by using common models and/or ontologies. This area has currently become a very active research field. We identify and present a significant number (N40) of relevant efforts. These initiatives are grouped into categories based on the owner, scope and model...
Article
In this paper, we present the collaborative environment reference architecture (CERA) with the aim of supporting collaborative work environment (CWE) interoperability. The vision of CERA is to support users who are engaged in common collaborative spaces with similar work processes to work and collaborate seamlessly together, despite their use of pr...
Conference Paper
Full-text available
This work extends and enhances existing semantic service models by involving users and by including service metadata related to the user's view of the service and their behaviour. We borrow ideas and extend the models and practices for the annotation of Web content and information resources that has recently become popular in widely-used social pla...
Article
Interoperability issues are one of the most challenging problems in modern information systems that are spread over different peers and rely on heterogeneous information and process models. This is a core issue especially for e-Government information systems that require communication with different crossborder services. The main goal is to seamles...
Article
As SOA matures the number of services made available on the Web increases steadily. At the same time, Web 2.0 allows people to easily combine content from different sources and to create mashups, which are becoming a new service species, mainly generated by users. In this paper, we extend and enhance service descriptions by involving users and incl...