Claudia Bauzer Medeiros

Learn More
Geographic Information Systems (GIS) have grown rapidly, motivated by general trends of information technologies in expanding their potential uses. In line with this tendency, GIS must consider the familiarity of new users with Cartography and their traditional way of representing natural phenomena. This paper evaluates the expressive power of GIS relative(More)
Requirements Engineering (RE) is the process of discovering the purpose of a prospective software system, by identifying stakeholders and their needs, and documenting these in a form that is suitable to analysis, communication, and subsequent implementation. Requirements elicitation is closely related and even interleaved to other RE activities such as:(More)
Content-Based Image Retrieval (CBIR) presents several challenges and has been subject to extensive research from many domains, such as image processing or database systems. Database researchers are concerned with indexing and querying, whereas image processing experts worry about extracting appropriate image descriptors. Comparatively little work has been(More)
The problems of discussingGeographic Information Systems { gis, for short { begin with de ning this term. There are countless de nitions for gis, each based on the type of user and application domain [43]. The more general de nition [24] would be \a digital information system whose records are somehow geographically referenced". For more precise de nitions,(More)
This paper presents an approach that helps to discover geographic locations from the recognition, extraction, and geocoding of urban addresses found in Web pages. Experiments that evaluate the presence and incidence of urban addresses in Web pages are described. Experimental results, based on a collection of over 4 million documents from the Brazilian Web,(More)
This paper presents UAPEÂÐa computational environment for modeling and designing environmental geographic applications. UAPEÂ is aimed at end-users who are experts in their application domain, but who do not have adequate background in software engineering or database design, and thus are unable to take full advantage of available GIS tools. Its goal is to(More)
Database views are traditionally described as unmaterialized queries, which may be coincidentally updatable according to some fixed criteria. One of the problems in updating through views lies in determining whether a given view modification can be correctly translated by the system. To define an updatable view, a view designer must be aware of how an(More)
The Web is a huge repository of geospatial information. Efficient retrieval of this information is a key factor in planning and decision-making in many domains, including agriculture. However, standards for data annotation and exchange enable only syntactic interoperability, while semantic heterogeneity presents challenges. This work describes a framework(More)