Volunteered Geographical Information (VGI) is the assembly of spatial information based on public input. While VGI has proliferated in recent years, assessing the quality of volunteercontributed data has proven challenging, leading some to question the efficiency of such programs. In this paper, we compare several quality metrics for individual volunteers’ contributions. The data was the produc...

Geo-located information is increasingly important for regional decision making and spatial assessment. Toronto has witnessed rapid demographic and economic change over the last decades, making the Toronto region the fourth largest economic centre in North America. From a policymaker’s perspective, understanding land use for planning purposes is critical for better urban planning. Such informati...

The proliferation of information sources as a result of networked computers and other interconnected devices has prompted significant changes in the amount, availability, and nature of geographic information. Among the more significant changes is the increasing amount of readily available volunteered geographic information. Although volunteered information has fundamentally enhanced geographic ...

Résumé. Les entrepôts de données spatiales et les systèmes SOLAP permettent l’analyse en ligne de gros volumes de données géo référencées. Dans un contexte de gestion des risques naturels, ces systèmes ont été utilisés avec succès sur des données officielles dont la collecte suit un processus bien établi. Le développement récent d’outils collaboratifs pour la saisie de données géographiques, y ...

Although the integration of sensor-based information into analysis and decision making has been a research topic for many years, semantic interoperability has not yet been reached. The advent of user-generated content for the geospatial domain, Volunteered Geographic Information (VGI), makes it even more difficult to establish semantic integration. This paper proposes a novel approach to integr...

Providing long-term data about the evolution of railway networks in Europe may help us understand how European Union (EU) member states behave long-term, and they can comply with present EU recommendations. This paper proposes a methodology for collecting stations, at maximal extent French network, century ago.The expected outcome is geocoded dataset stations (gares), which: (a) links gares to ...

The history of the use of informatics tools to support collaborative planning is relatively recent. Personal computer, multimedia techniques and the web provided useful technology for the purposes of collaborative processes. Following the advent of Web 2.0, the wide diffusion of electronic devices containing geo-referenced information have resulted in the production of extensive spatial data. T...