Nizar Ghoula

Yellow Pages Group, Montreal

Local search engines are specialized information retrieval systems enabling users to discover amenities and services in their neighbourhood. Developing a local search system still raises scientific questions, as well as very specific technical issues. Those issues come for example from the lack of information about local events and actors, or the s...

In this paper we show that connecting terminological resources with other knowledge resources, such as text corpora, aligned texts, or ontologies can enhance their applicability and quality. We first show how the tools developed at Olanto leverage different types of knowledge resources and processes to provide new functionalities. Then we present a...

La terminologie est largement dépendante du contexte d’utilisation et varie donc d’une organisation à une autre. Nous présentons un outil qui facilite l’exploration terminologique. A partir d’un terme, il permet de chercher interactivement des traductions, les termes composés, des synonymes et éventuellement d’autres termes qui lui sont associés. C...

Multiple tasks related to documents, such as indexing, retrieving, annotation, or translation are based on linguistic, terminological and ontological knowledge existing in resources of different types represented using various formalisms. Building bridges between these resources and using them together is a complex task. Solving this problem relies...

Résumé : Les applications du Web sémantique utilisent et produisent un grand nombre de ressources termino-ontologiques. Malgré l'hétérogénéité de ces ressources, elles peuvent partager ou importer des mêmes entités (concepts, termes, individus, ...). Idéalement, ces ressources doivent être alignées afin de pouvoir reformuler des requêtes pour mieux...

Virtual 3D city models are used for different applications such as urban planning, navigation, pedestrian behaviour, historical information, and disaster management. These applications require rich information models that associate urban objects not only with their geometric properties but also with other types of information. When designing such m...

Since the invention of the Semantic Web concept, the number of ontological and terminological resources on the Web has been increasing. These heterogeneous resources may share entities or contain similar ones. To cope with the diversity of these resources and collect them, resources repositories have been created. Matching entities belonging to dif...

Version October 2013

De plus en plus d'environnements virtuels 3D servent à présenter des informations qui n'ont pas de représentation directe sous forme d'objets géométriques (textes, données numériques) et pour lesquelles une technique de visualisation appropriée doit être utilisée. C'est le cas notamment des modèles urbains 3D enrichis qui contiennent non seulement...

Version February 2013

Knowledge based applications require linguistic, terminological and ontological resources. These applications are used to fulfill a set of tasks such as semantic indexing, knowledge extraction from text, in-formation retrieval, etc. Using these resources and combining them for the same application is a tedious task with different levels of complex-...

3D city models - which represent in 3 dimensions the geometric elements of a city - are increasingly used for an intended wide range of applications. Such uses are made possible by using semantically enriched 3D city models and by presenting such enriched 3D city models in a way that allows decision-making processes to be carried out from the best...

Models, which represent in 3 dimensions the geometric elements of a city, are called 3D city models. Those models are used for an intended wide range of applications beyond mere visualization. Such uses are made possible by enriching the geometrical aspects with urban or environmental data that cannot be perceptible to a user without a visual abstr...

Le nombre croissant d'ontologies disponibles sur le web a justifié l'apparition d'entrepôts d'ontologies. Cependant, peu d'entre eux intègrent également des ressources hétérogènes de type ontologique, textuelle, linguistique et terminologique. De plus, ils ne fournissent pas un ensemble complet d'opérateurs permettant la gestion et le traitement de...

Multiple sources of information can improve knowledge mangement if they are properly combined and processed. Knowledge engineering usually relies on knowledge resources, typically ontologies. We propose a domain-independent framework which models, combines and represents heterogenous sources of information. Our aim is to build a resources repositor...

Documents are rich resources containing knowledge describing a specific domain. That's why their processing is a common task, which is based on the use of terminological and ontological resources. Various types of ontologies, thesauri, and a large list of resources are commonly used in the process of knowledge extraction. The modeling and reuse of...

Les brevets sont une source d'information très riche puisque ce sont des documents qui servent à décrire les inventions. L'accès aux documents de brevets en ligne est possible grâce aux efforts des offices nationaux de la propriété intellectuelle. Par ailleurs, ayant des objectifs différents, la présentation de ces documents a pris des formes varié...

Semantic web approach seems interesting for supporting content mining of millions of patents accessible through the Web. In this paper, we describe our approach for generating semantic annotations on patents, by relying on the structure and on a semantic representation of patent documents. We use both the structure of the patent documents and their...