Christos Tatsiopoulos

• Ph.d
• PostDoc Position at University of Patras - Freelancer

This work deals with new approaches in the areas of intelligent knowledge exchange. It presents a knowledge discovery technique, that is being in turn enriched with gamification methodology, so that to find elements of user behaviour and propose optimal personal decision path for achieving objectives, in more productive and fun to user ways. At the...

This work deals with the issue of understanding a user’s behaviour as this is expressed via a gamified application. On a previous work we have introduced the notion of ontologies and the association of concepts in relevance to decisions that have to be made. The current work extends the previous, as it introduces a new process-based approach, based...

The global human population is aging rapidly, however, living longer does not necessarily mean living healthy, active and independent life. The emerging disruptive technologies like the Internet of Things (IoT) are proving instrumental in addressing this prominent societal challenge. Urban IoT infrastructures, designed to support the Smart City vis...

This work deals with new approaches in the areas of intelligent knowledge exchange. It presents a knowledge discovery technique, that is being in turn enriched with gamification methodology, so that to find elements of user behaviour and propose optimal personal decision path for achieving objectives, in more productive and fun to user ways. At the...

As citizens’ age increases, smart cities must adapt to help them to age properly. The objective of the City4Age project is to create the future ambient assisted cities that will help the citizens to deal with mild cognitive impairments (MCI) and frailty. In this paper we present two of the tools developed during the project. The first one is a city...

This paper describes an environment based on rich interactive diagrams, allowing the geriatricians and caregivers to access, analyze and precisely annotate or label specific granular cases of interest in a variety of heterogeneous data collected, to identify “behaviour changes” through Smart City IoT and Open Data infrastructures. The overall goal...

The presented work describes an interactive environment that allows geriatricians and caregivers to access, analyze and understand a variety of heterogeneous data obtained from smart city ICT infrastructure. The objective is to identify and characterize relevant behaviour changes using the newly developed multifunctional dashboard interfaces. The o...

Work to be presented in IGBC conference, Birmingham, UK, Sept. 23 2015, for energy user profile and behavior management / change, based on gamification processes.

Due to the decentralization in the Semantic Web, ontologies can be designed and developed by different communities, using different vocabularies and overlapping content. In this paper, we present a system for ontology exchanging between communities. More specifically, the system updates parts of ontologies, which are considered to be interesting by...

Purpose The paper aims to present an approach for services in the domain of tourism based on a software application in the area of ontology engineering, showing a methodology for intelligent knowledge‐based P2P networks creation, in the tourism knowledge domain, given that, potential tourists share and organize their experiences, interests and know...

A temperature, humidity and light meter has been designed and implemented using open standards technology and commercial components in order to monitor environmental indoor and outdoor conditions. At the heart of the smart meter lies a microprocessor processor using the ZigBee protocol to communicate the data transmitted by commercial wireless sens...

Ontology mapping is one of the most important processes in ontology engineering. It is imposed by the decentralized nature of both the WWW and the Semantic Web, where heterogeneous and incompatible ontologies can be developed by different communities. Ontology mapping can be used to establish efficient information sharing by determining corresponde...

Ontology merging/alignment is one of the most important tasks in ontology engineering. It is imposed by the decentralized nature of both the WWW and the Semantic Web, where heterogeneous and incompatible ontologies can be developed by different communities. Usually, ontology merging/alignment is based on an ontology mapping that has been establishe...

Data integration is the process by which data from hetero- geneous data sources are conceptually integrated into a single cohesive data set. In recent years agents have been increasingly used in informa- tion systems to promote performance. In this work we propose a modeling framework for agent oriented data integration to demonstrate how agents ca...

Increasing numbers of images have made explicit the need for more effective and efficient image indexing and searching of not only the meta-data associated with an image but also retrieval directly based on the content of the image. The scope of the COBWEB (COntext-Based image retrieval on the WEB) project (EP28773) is to create a pioneer system th...