Research

Keywords : Geographical Information System,
Multi-media databases,
Query language,
Data model

 

These few lines aim to present some research activities in recent years. A complete bibliography is available with the link « Bibliography« . The main subjects presented here are :

Human-Computer Interface (language / model)

The definition of a visual query language for Geographical Information System was one of the first studied subjects.  A query language, CIGALES, allows defining a query on a database with geolocalizaed data. Visual, since the main concept is the representation of a set of desired spatial relationships defined by the end-user with a drawing  (illustration as QBE did for alphanumeric data but applied to (geo-)graphical components). CIGALES is a declarative language in the sense that it does not define any order for the actions to be performed to solve the query but presents the desired spatial relationships (Mainguenaud, Portier – SDH 1990). Here are some links on publications about this subject  :

At the data model level, research directions are based on the management of multi-users applications to manage for example over-constraint problems or end-users with an heterogeneous knowledge in computer-science or in buisiness logic. Here are some links on publications about this subject  :

 

Network management

Another research area is the modeling of network using the concept of graph. The aim is to study this modeling from the semantical point of view (the cartographical representation is not taken into account). The basic principle is to provide the representation of a network starting from the user’s level toward the cartographical level (which may not exists). Here are some links on publications about this subject  :

 

Data models

This research area is mainly oriented towards the result of a spatial operator from the semantical point of view : Which is the data model associated with the result of a spatial data manipulation operator ?). Here are some links on publications about this subject  :

 

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Last update (YYYY-MM-DD): 2016-02-26