- I have been Professor in the Computer Science Department at Laval University, Quebec for 37 years. I retired on Septe... moreI have been Professor in the Computer Science Department at Laval University, Quebec for 37 years. I retired on September 2018. I am still active doing research with colleagues and students that I co-supervise. My fields of expertise: System analysis and design methods, Data modeling and knowledge representation, multi-agent system and geo-simulation, applications of artificial intelligence techniques in geomatics (geographic information systems). I managed a lot of research projects funded by Canadian researchcouncils, government agencies, often in collaboration with industry. My research projects are usually multi-disciplinary. During the past 40 years I worked with colleagues in anthropology, sociology, linguistics, computational linguistics, education, computer science, geography, agronomy, geomatics, public health, geomorphology, egovernment ...edit
... The set of typical risky locations NRL = {L8 = Jonquil field, L9 = Mushroom field, L10 = Forest area} ... Visits grouped under this category correspond to 4 different inferred motivations: Picker, Sportsman, Walker and Picnicker... more
... The set of typical risky locations NRL = {L8 = Jonquil field, L9 = Mushroom field, L10 = Forest area} ... Visits grouped under this category correspond to 4 different inferred motivations: Picker, Sportsman, Walker and Picnicker (Figure 5, right side). ...
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Database generalisation is a process which aims at producing a geographic database from an initial geographic database in order to satisfy new needs. Starting from the study of an actual database generalisation process developed at the... more
Database generalisation is a process which aims at producing a geographic database from an initial geographic database in order to satisfy new needs. Starting from the study of an actual database generalisation process developed at the Ministère des Ressources Naturelles of Québec (MRNQ), our intention was to formalise the cartographic knowledge contained in the process to make it reusable. MRNQ's
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We propose a framework to reason qualitatively about courses of action (COAs) which need to be executed in a realistic geographic space that may change. Particularly, the framework aims to support human mental ‘What-If’ analysis by... more
We propose a framework to reason qualitatively about courses of action (COAs) which need to be executed in a realistic geographic space that may change. Particularly, the framework aims to support human mental ‘What-If’ analysis by simulating the execution of COAs in a virtual geographic environment, which can change during the simulation, and by allowing the user to explore various
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ABSTRACT Given the ongoing risk of infectious diseases worldwide, it is crucial to develop appropriate analysis methods, models, and tools to assess and predict the spread of disease and evaluate the risk. Analyzing and Modeling Spatial... more
ABSTRACT Given the ongoing risk of infectious diseases worldwide, it is crucial to develop appropriate analysis methods, models, and tools to assess and predict the spread of disease and evaluate the risk. Analyzing and Modeling Spatial and Temporal Dynamics of Infectious Diseases features mathematical and spatial modeling approaches that integrate applications from various fields such as geo-computation and simulation, spatial analytics, mathematics, statistics, epidemiology, and health policy. In addition, the book captures the latest advances in the use of geographic information system (GIS), global positioning system (GPS), and other location-based technologies in the spatial and temporal study of infectious diseases. More details can be found at http://ca.wiley.com/WileyCDA/WileyTitle/productCd-1118629930,descCd-buy.html?dmmspid=22572988&dmmsmid=88793&dmmsuid=2334962.
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... Gazdar G. (1981), Speech act assignment, in Joshi AK, Webber BL and Sag IA (edts), Elements of Discourse Understanding, Cambridge: Cambridge University Press ... Mittal Vibhu O., Paris, CL (1993), Context: identifying its elements... more
... Gazdar G. (1981), Speech act assignment, in Joshi AK, Webber BL and Sag IA (edts), Elements of Discourse Understanding, Cambridge: Cambridge University Press ... Mittal Vibhu O., Paris, CL (1993), Context: identifying its elements from the communication point of view, In proc. ...
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ABSTRACT Public health decision makers need to better understand the propagation of zo-onoses. The currently available zoonosis simulations are based on compartment models which do not integrate the influence of geographic features on the... more
ABSTRACT Public health decision makers need to better understand the propagation of zo-onoses. The currently available zoonosis simulations are based on compartment models which do not integrate the influence of geographic features on the species’ biological processes. In this context, we propose an approach that can generate an informed virtual geographic environment (IVGE) composed of a set of cells in which the evolution and interaction of the involved populations can be simulated plausibly. Since the number of these cells is huge, we propose a threshold-based merging algorithm which creates spatial subdivisions with the maximal size and suitability for a given biological phenomenon. Our approach also enhances each cell with qualitative and quantitative information such as the relative geographic orientation of the neighbors and the information about the distribution of individuals through trajectories. We used our IVGE to develop decision support tools that can simulate the spread of the West Nile Virus and Lyme disease.
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... Courses Of Action Analysis Hedi Haddad Laval University Computer Science Department, 3904 Pav. Pouliot, Québec, G1K 7P4 1-888-569-7979 hedi.haddad.1@ulaval.ca Bernard Moulin Laval University Computer Science Department, 3904 Pav. ...
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... Souissi from the Japan Advanced Institute of Science and Technology (JAIST) for her support and encouragements. Last and by no means least, I'm forever grateful and in depth to my dear parents, my brothers and their wives, my... more
... Souissi from the Japan Advanced Institute of Science and Technology (JAIST) for her support and encouragements. Last and by no means least, I'm forever grateful and in depth to my dear parents, my brothers and their wives, my sisters and their husbands, my nephews (Wajdi, ...
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Abstract An approach to model group interactions involving persons and machines is presented. It is based on a language/action perspective where a conversation corresponds to a script of interactions which takes place among a group of... more
Abstract An approach to model group interactions involving persons and machines is presented. It is based on a language/action perspective where a conversation corresponds to a script of interactions which takes place among a group of agents performing speech acts as well as ordinary acts. These speech acts and ordinary acts are discussed along with two main knowledge structures, the communication/action structures and the decision space, which represent agents' mental attitudes, plans, and communication activities
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Abstract In this paper we propose an agent-based geosimulation approach to support" What if" analysis of COAs in Virtual Geographic Environments. An innovative part of our approach is the use of the agent-based... more
Abstract In this paper we propose an agent-based geosimulation approach to support" What if" analysis of COAs in Virtual Geographic Environments. An innovative part of our approach is the use of the agent-based simulation (ABS) paradigm to support qualitative reasoning ...