Hu, Bo, Croitoru, Madalina, Roset, Roman, David, Dupplaw, Miguel, Lurgi, Srinandan, Dasmahapatra, ...
In this paper we present our experience of representing the knowledge behind HealthAgents, a distributed decision support system for brain tumour diagnosis. Our initial motivation came from the...
Hu, Bo, Croitoru, Madalina, Roset, Roman, David, Dupplaw, Miguel, Lurgi, Srinandan, Dasmahapatra, ...
In this paper we present our experience of representing the knowledge behind HealthAgents, a distributed decision support system for brain tumour diagnosis. Our initial motivation came from the...
Incorporating Probabilistic Knowledge in HealthAgents: a Conceptual Graph Approach (2009)
Madalina Croitoru, An Dasmahapatra, Paul Lewis
Abstract HealthAgents is a multi-agent, distributed decision support system for brain tumor diagnosis. Knowledge needs to be shared amongst different agents in order to assist clinicians when making...
Indexing Ontologies with Semantics-enhanced Keywords (2009)
Hu, Bo, Croitoru, Madalina, Dasmahapatra, Srinandan, Lewis, Paul, Shadbolt, Nigel
Ontologies, as a knowledge representation paradigm, rely on semantics for performing logical inference. However, in the context of ontology query and reuse, the semantics are hard to be manipulated....
Distinguishing Answers in Conceptual Graph Knowledge Bases (2009)
Moreau, Nicolas, Leclère, Michel, Croitoru, Madalina
In knowledge bases, the open world assumption and the ability to express variables may lead to an answer redundancy problem. This problem occurs when the returned answers are comparable. In this...
Distinguishing Answers in Conceptual Graph Knowledge Bases (2009)
Moreau, Nicolas, Leclère, Michel, Croitoru, Madalina
In knowledge bases, the open world assumption and the ability to express variables may lead to an answer redundancy problem. This problem occurs when the returned answers are comparable. In this...
Croitoru, Madalina, Gonzales, Christophe, Lang, Jérôme, Motik, Boris, Mugnier, Marie-Laure
The development of effective techniques for knowledge representation and reasoning (KRR) is a crucial aspect of successful intelligent systems. Different representation paradigms, as well as their...
A Generalised Network Flow Approach to Combinatorial Auctions (2009)
Croitoru, Madalina, Croitoru, Cornelius
In this paper we address the problem of (1) representing bids for combinatorial auctions and (2) employing those structures for “reasoning”. We propose a graph-based language who's novelty lies...
Croitoru, Madalina, Gonzales, Christophe, Lang, Jérôme, Motik, Boris, Mugnier, Marie-Laure
The development of effective techniques for knowledge representation and reasoning (KRR) is a crucial aspect of successful intelligent systems. Different representation paradigms, as well as their...
A Generalised Network Flow Approach to Combinatorial Auctions (2009)
Croitoru, Madalina, Croitoru, Cornelius
In this paper we address the problem of (1) representing bids for combinatorial auctions and (2) employing those structures for “reasoning”. We propose a graph-based language who's novelty lies...
RDF to Conceptual Graphs Translations (2009)
Baget, Jean-Francois, Chein, Michel, Croitoru, Madalina, Fortin, Jérôme, Genest, David, Gutierrez, Alain, ...
In this paper we will discuss two different translations between RDF (Resource Description Format) and Conceptual Graphs (CGs). These translations will allow tools like Cogui and Cogitant to be able...
RDF to Conceptual Graphs Translations (2009)
Baget, Jean-Francois, Chein, Michel, Croitoru, Madalina, Fortin, Jérôme, Genest, David, Gutierrez, Alain, ...
In this paper we will discuss two different translations between RDF (Resource Description Format) and Conceptual Graphs (CGs). These translations will allow tools like Cogui and Cogitant to be able...
Default Conceptual Graph Rules: Preliminary Results for an Agronomy Application (2009)
Baget, Jean-Francois, Croitoru, Madalina, Fortin, Jérôme, Thomopoulos, Rallou
In this paper, we extend Simple Conceptual Graphs with Reiter's default rules. The motivation for this extension came from the type of reasonings involved in an agronomy application, namely the...
Default Conceptual Graph Rules: Preliminary Results for an Agronomy Application (2009)
Baget, Jean-Francois, Croitoru, Madalina, Fortin, Jérôme, Thomopoulos, Rallou
In this paper, we extend Simple Conceptual Graphs with Reiter's default rules. The motivation for this extension came from the type of reasonings involved in an agronomy application, namely the...
Representing and reasoning about different viewpoints: an agronomy application (2009)
Croitoru, Madalina, Thomopoulos, Rallou
Real world applications are often complex systems where several ways of analyzing a given situation can be expressed, depending on actors' viewpoints. This paper proposes a semantically sound...
Representing and reasoning about different viewpoints: an agronomy application (2009)
Croitoru, Madalina, Thomopoulos, Rallou
Real world applications are often complex systems where several ways of analyzing a given situation can be expressed, depending on actors' viewpoints. This paper proposes a semantically sound...
Argumentation Map Generation with Conceptual Graphs: the Case for ESSENCE (2009)
De Moor, Aldo, Park, Jack, Croitoru, Madalina
Argumentation maps are visual representations of argumentation structures, making it possible to efficiently examine the cumulative results of protracted, distributed, and complex argumentation...
Argumentation Map Generation with Conceptual Graphs: the Case for ESSENCE (2009)
De Moor, Aldo, Park, Jack, Croitoru, Madalina
Argumentation maps are visual representations of argumentation structures, making it possible to efficiently examine the cumulative results of protracted, distributed, and complex argumentation...
Croitoru, Madalina, Fortin, Jérôme, Jaschke, Robert
The Fourth Conceptual Structures Tool Interoperability Workshop (CS-TIW 2009) was held in Moscow, Russia on the 26th of July 2009, collocated with the 17th International Conference on Conceptual...
Croitoru, Madalina, Fortin, Jérôme, Jaschke, Robert
The Fourth Conceptual Structures Tool Interoperability Workshop (CS-TIW 2009) was held in Moscow, Russia on the 26th of July 2009, collocated with the 17th International Conference on Conceptual...
Conceptual Graphs based information retrieval in (2008)
Madalina Croitoru, Bo Hu, An Dasmahapatra, Paul Lewis, Alex Gibb, Margarida Julia-sape, ...
4 Instituto de Aplicaciones de las TIC Avanzadas, Spain;
(GRE). Employing Conceptual Graphs as the (2008)
underlying formalism allows a rigorous, semantically rich, approach to GRE. A number of advantages over existing work are discussed. The new framework is also used to revisit existing complexity...
A tree decomposition algorithm for Conceptual Graph projection (2008)
Madalina Croitoru, Ernesto Compatangelo
This paper discusses combinatorial mechanisms for reasoning with conceptual graphs. We focus on the combinatorial aspects of a backtracking approach to the NP-hard problem of projection, which is the...
Multimedia Markup Tools for OpenKnowledge (2008)
Madalina Croitoru, Antonis Loizou, An Dasmahapatra, Paul H. Lewis, Mischa M. Tuffield, Liang Xiao
Abstract. OpenKnowledge is a peer-to-peer system for sharing knowledge and is driven by interaction models that give the necessary context for mapping of ontological knowledge fragments necessary for...
Ontology Constraint Satisfaction Problems using Conceptual Graphs (2008)
Madalina Croitoru, Ernesto Compatangelo
In this paper we present a visual formalism for representing constraints over knowledge intensive domains. Our approach is based on Conceptual Graphs and consequently benefits from their visual and...
Expressive security policy rules using Layered Conceptual Graphs (2008)
Madalina Croitoru, Liang Xiao, Paul Lewis
A method must be provided to support the analysis of security policy rules interdependencies in a (possibly distributed) environment. We propose a Conceptual Graphs based language that will allow us...
A Conceptual Graph Approach to the Generation of Referring Expressions (2008)
This paper presents a Conceptual Graph (CG)
A Security Model and its Application to a Distributed Decision Support System for Healthcare (2008)
Xiao, Liang, Vicente, Javier, Sáez, Carlos, Peet, Andrew, Gibb, Alex, Lewis, Paul, ...
A distributed decision support system involving multiple clinical centres is crucial to the diagnosis of rare diseases. Although sharing of valid diagnosed cases can facilitate later decision making,...
Delivery of secure health care across clinical centres (2008)
Xiao, Liang, Croitoru , Madalina, Lewis, Paul
Assisting medical diagnosis has been one of the main goals of Software Engineering (SE) and Artificial Intelligence (AI). Access to patient data is resenting itself as a challenge due to the nature...
Expressive Security Policy Rules using Layered Conceptual Graphs (2008)
Croitoru, Madalina, Xiao, Liang, Dupplaw , David, Lewis, Paul
A Security Model and its Application to a Distributed Decision Support System for Healthcare (2008)
Xiao, Liang, Vicente, Javier, Sáez, Carlos, Peet, Andrew, Gibb, Alex, Lewis, Paul, ...
A distributed decision support system involving multiple clinical centres is crucial to the diagnosis of rare diseases. Although sharing of valid diagnosed cases can facilitate later decision making,...
Delivery of secure health care across clinical centres (2008)
Xiao, Liang, Croitoru , Madalina, Lewis, Paul
Assisting medical diagnosis has been one of the main goals of Software Engineering (SE) and Artificial Intelligence (AI). Access to patient data is resenting itself as a challenge due to the nature...
Madalina Croitoru, Robert Jäschke, Robert Jäschke, Sebastian Rudolph, Madalina Croitoru, Robert Jäschke
O programmer why seekest thou to hide The mellow fruits of craftmanship and wit, Sweets with sweets war not, coupled side by side, Will software grant the greatest benefit. Each single tool might let...
Multimedia Markup Tools for OpenKnowledge (2007)
Dupplaw, David, Croitoru, Madalina, Loizou, Antonis, Dasmahapatra, Srinandan, Lewis, Paul, Tuffield, Mischa, ...
OpenKnowledge is a peer-to-peer system for sharing knowl- edge and is driven by interaction models that give the necessary context for mapping of ontological knowledge fragments necessary for the in-...
Multimedia Markup Tools for OpenKnowledge (2007)
Dupplaw, David, Croitoru, Madalina, Loizou, Antonis, Dasmahapatra, Srinandan, Lewis, Paul, Tuffield, Mischa, ...
OpenKnowledge is a peer-to-peer system for sharing knowl- edge and is driven by interaction models that give the necessary context for mapping of ontological knowledge fragments necessary for the in-...
A Conceptual Graph Description of Medical data for Brain Tumour Classification (2007)
Croitoru, Madalina, Hu, Bo, Dasmahapatra, Srinandan, Lewis, Paul, Dupplaw, David, Xiao, Liang
HealthAgents proposes an agent-based distributed decision support system for brain tumour diagnosis and prognosis which employs Magnetic Resonance Imaging and Magnetic Resonance Spectroscopy...
Adaptive Agent Model: an Agent Interaction and Computation Model (2007)
Xiao, Liang, Robertson, Dave, Croitoru, Madalina, Lewis, Paul, Dashmapatra, Srinandan, Dupplaw, David, ...
Software systems must be capable of coping with continuous requirements changes and at the same time wisely make use of emerging components and services to remain useful in their environment. In this...
Xiao, Liang, Peet, Andrew, Lewis, Paul, Dashmapatra, Srinandan, Sáez, Carlos, Croitoru, Madalina, ...
We present in this paper an adaptive security model for Multi-agent systems. A security meta-model has been developed in which the traditional role concept has been extended. The new concept...
Adaptive Agent Model: an Agent Interaction and Computation Model (2007)
Xiao, Liang, Robertson, Dave, Croitoru, Madalina, Lewis, Paul, Dashmapatra, Srinandan, Dupplaw, David, ...
Software systems must be capable of coping with continuous requirements changes and at the same time wisely make use of emerging components and services to remain useful in their environment. In this...
Xiao, Liang, Peet, Andrew, Lewis, Paul, Dashmapatra, Srinandan, Sáez, Carlos, Croitoru, Madalina, ...
We present in this paper an adaptive security model for Multi-agent systems. A security meta-model has been developed in which the traditional role concept has been extended. The new concept...
Expressive Security Policy Rules using Layered Conceptual Graphs (2007)
Croitoru, Madalina, Xiao , Liang, Dupplaw , David, Lewis, Paul
Conceptual Graphs Based Information Retrieval in HealthAgents (2007)
Croitoru, Madalina, Hu, Bo, Dasmahapatra, Srinandan, Lewis, Paul, Dupplaw, David, Gibb, A, ...
This paper focuses on the problem of representing, in a meaningful way, the knowledge involved in the HealthAgents project. Our work is motivated by the complexity of representing Electronic...
Hierarchical knowledge integration using layered conceptual graphs (2005)
Madalina Croitoru, Ernesto Compatangelo, Chris Mellish
Abstract We describe the ‘Hierarchical as View ’ approach to knowledge integration from heterogeneous sources. This is based on a novel representation called Layered Conceptual Graphs (LCGs), a...
Hierarchical knowledge integration using layered conceptual graphs (2005)
Madalina Croitoru, Ernesto Compatangelo, Chris Mellish
Abstract We describe the ‘Hierarchical as View ’ approach to knowledge integration from heterogeneous sources. This is based on a novel representation called Layered Conceptual Graphs (LCGs), a...
Hierarchical knowledge oriented specification for information integration (2005)
Madalina Croitoru, Ernesto Compatangelo
We present a novel methodology for manipulating sources in a knowledge integration scenario. First we define and exploit an appropriate data model – Knowledge Oriented Specification – for...
E.: On conceptual graph projection (2004)
Madalina Croitoru, Ernesto Compatangelo
Version 1.1 — 17/5/2004
A combinatorial approach to conceptual graph projection checking (2004)
Madalina Croitoru, Ernesto Compatangelo
We exploit the combinatorial structure of conceptual graphs in order to obtain better execution times when computing projection, which is a core generalisation-specialisation relation over conceptual...
M.: Domain knowledge articulation using integration graphs (2003)
Madalina Croitoru, Ernesto Compatangelo
In order to be queried and reused, different domain knowledge bases must be shared using the same representation. In this paper, we introduce a graph-based knowledge model to articulate independently...