The starting point for this article is the fact that each spatial object i is characterized by three coordinates: x (latitude), y (longitude) and zi(by tradition elevation). The discussion is organized around three axes. First, the author reviews some of main problems encountered when representing a volume (ellipsoid) on a plane (map). Second, some elementary principles of cartography are discu...

This paper presents a novel approach for context driven knowledge retrieval. The main focus is placed on the user interface to support the representation and contextualization of search results in a thematic category network, which can be present in the form of web directories like the Google category system or organizational ontologies. An interactive matrix display is used for showing relatio...

1 LIMSI-CNRS. BP 133, 91403 Orsay Cedex, France. email: [ferret,grau]@limsi.fr Abstract. Thematic analysis is essential for many Natural Language Processing (NLP) applications, such as text summarization or information extraction. It is a two-dimensional process that has both to delimit the thematic segments of a text and to identify the topic of each of them. The system we present possesses th...

This study attempts to specify the contribution of two subregions of Broca's area during syntactic and semantic processing of sentences by examining brain activation in a grammaticality judgment task. The processing of two types of ungrammatical sentences was examined. One type leaves the thematic interpretation generally unaffected, by violating the noun-verb agreement in number, while the oth...

Spatial and temporal data are critical components in many applications. This is especially true in analytical domains such as national security and criminal investigation. Often, the analytical process requires uncovering and analyzing complex thematic relationships between disparate people, places and events. Fundamentally new query operators based on the graph structure of Semantic Web data m...

This paper presents a novel approach for the representation and contextualization of search results in a thematic category network, which can be present in the form of web directories like the Google category system or the Open Directory Project. An interactive matrix display is used for showing relations between concepts and concept hierarchies of the directory, which are displayed along the t...

E-learning has been continuously present in current educational discourse, thanks to technological advances, learning methodologies and public or organizational policies, among other factors. However, despite its boom and dominance in various subject areas, this thematic does not yet exist in the world system of publications. Therefore, works in this thematic end up being published under relate...