Recent Research Activities & Projects

WIQ-EI: Web Information Quality - Evaluation Initiative (FP7-PEOPLE-2010-IRSES)

Development of Web Content Information Qualit Measures
Plagiarism Detection and Authorship Attribution
Multilingual Opinion and Sentiment Mining

The mission of WIQ-EI is to develop mechanisms for estimating the quality of textual Web documents and to evaluate these mechanisms for their effectiveness and efficiency. This will be done on a global scale by organising researcher exchanges between renowned organisations from European and third countries which have their expertise in topic relevant fields. WIQs motivation starts from the observation, that today’s information and data pools on the Web focus on the quantity of information rather than its quality; a fact observable through the increasing size of the blogosphere, the number of growing artificially created data, the well established copy & paste syndrome, the lack of semantically enriched data as well as the intentional and unintentional information misuse. The assessment of the quality of information is especially important because decisions are often based on information from multiple and sometimes unknown sources, though, the reliability and accuracy of the information is questionable. However, the web lacks quality dependent filter mechanisms, automatic identification of misuse patterns, as well as tools to establish user trust in information and authors. Given this motivation, WIQ-EI aims at the development of mechanisms to automatically estimate information quality aspects, which is inexpensive, complete and can be performed continuously to cope with large amounts of data. Thus, WIQ-EI will result in a set of algorithms, tools and test data sets to estimate the quality of textual Web documents and evaluate the algorithmic effectiveness and efficiency.
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Automatic Multiple-Choice Questions construction using domain ontologies

Semantic Wiki-based Argumentation in Collaborative Ontology engineering

Semantic Information System for the trading of resources and services

Semantic Matchmaking of WSDL Web Services


Agreement Technologies COST Action IC0801

Agreement Technologies refer to computer systems in which autonomous software agents negotiate with one another, typically on behalf of humans, in order to come to mutually acceptable agreements. This Action aims at coordinating national efforts on a new paradigm for next generation distributed systems, based on the concept of agreement between computational agents. An entity may choose whether to fulfill an agreement or not, and it should fulfill it when there is an obligation to do so derived from the standing agreements. Autonomy, interaction, mobility and openness are the characteristics that the paradigm will cover from a theoretical and practical perspective. Semantic alignment, negotiation, argumentation, virtual organisations, learning, real time, and several other technologies will be in the sandbox to define, specify and verify such systems. Both functional and non-functional properties are to be studied. Security on execution will be based on trust and reputation measures. These measures will help agents to determine with whom to interact and what terms and conditions to accept.
Keywords: Agreement, Multiagent Systems, Semantics

Domain : Information and Communication Technologies
Action title : Agreement Technologies

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e-University for Administrative Affairs Consultancy to Information Society SA

e-University aims at developing systems to support all of the activities of Greek Universities and Technological Institutes (GU&TI). The major objective is to provide citizens interacting with GU&TI the electronic services needed for information provision and transactions support. The project aims to the development of pilot systems that are going to be deployed in selected GU&TI.

This project is part of the overall e-University project, aiming to the development of a pilot system that will support information provision and e-transactions for the citizens interacting with GU&TIs on administrative affairs. We specify the requirements for such a system and supervise its development. The pilot system will be tested in the premises of the University of the Aegean and in the premises of the Technological Institute of Athens.

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Pythagoras: Dynamic Formation of Collaborative Agent Organizations

Agent Organizations are complex entities composed of several agents that collaborate to achieve certain tasks. The Pythagoras project aims at developing new efficient methods for the formation and the collaborative operation of dynamic agent organizations. We propose to represent the formation process as a 3-step procedure consisting of the following steps: 1) creation of the organization's structure, 2) task/role allocation to the agents in the organization, 3) planning and acting by the agents. Since the agents that participate in an organization can be diverse, having different skills and resources, and also different personal goals, the processes of creating the organization's structure and allocating roles/tasks to agent can be heavily constrained and very complex. We intend to investigate distributed constraint-based reasoning techniques for the efficient implementation of these processes.

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ICAGENT: Towards a Generic Framework for the development of Intelligent Collaborative Agents

Several agent frameworks have been proposed for developing intelligent software agents and multi-agent systems that are able to perform in dynamic environments. These frameworks and architectures exploit specific reasoning tasks (such as option selection, desire filtering, plan elaboration and means-end reasoning) that support agents to react, deliberate and/or interact/cooperate with other agents. Such reasoning tasks are realized by means of specific modules that agents may trigger according to circumstances, switching their behaviour between predefined discrete behavioural modes. Developments in the context of this project aim to provide facilities so as the non-layered BDI-architecture of ICagent to support performance in dynamic and unpredictable multi-agent environments through efficient balancing between behavioural modes in a continuous space. This space is circumscribed by the purely (individual) reactive, the purely (individual) deliberative and the social deliberative behavioural modes. ICagent relates agent’s flexible behaviour to cognition and sociability, supporting the management of plans constructed by the agent’s mental and domain actions in a coordinated manner.

This is a continuation of the work done by Vangelis Kourakos-Mavromichalis: Via this project we aim to the full implementation, validation and empirical testing of a generic framework for building collaborative agents.
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