This contribution deals with the role of geographical information in participatory research concerning coastal zones and its potential to bridge the gap between research and coastal zone management. The study aims at modeling the interactions between human activities in a maritime basin. A dynamic GIS is used as a tool to facilitate the exchange of points of view and to share knowledge. Geograp...

Species richness patterns are remarkably similar across many marine taxa, yet explanations of how such patterns are generated and maintained are conflicting. I use published occurrence data to identify previously masked latitudinal and longitudinal diversity gradients for all genera of benthic marine macroalgae and for species in the Order Bryopsidales. I also quantify the size, location, and o...

The rapid growth of geotagged social media raises new computational possibilities for investigating geographic linguistic variation. In this paper, we present a multi-level generative model that reasons jointly about latent topics and geographical regions. High-level topics such as “sports” or “entertainment” are rendered differently in each geographic region, revealing topic-specific regional ...

The Landscape Genetics GIS Toolbox contains tools that run in the Geographic Information System software, ArcGIS , to map genetic landscapes and to summarize multiple genetic landscapes as average and variance surfaces. These tools can be used to visualize the distribution of genetic diversity across geographic space and to study associations between patterns of genetic diversity and geographic...

Geographic Information Retrieval can be seen as a specialized branch of traditional Information Retrieval. It includes all of the research areas that have traditionally made up the core of research into Information Retrieval, but in addition has an emphasis on spatial and geographic indexing and retrieval. This article present some of the challenges in Geographic Information Retrieval like the ...

We study the problem of resolving a perhaps misspelled address of a location into geographic coordinates of latitude and longitude. Our data structure solves this problem within a few milliseconds even for misspelled and fragmentary queries. Compared to major geographic search engines such as Google or Bing we achieve results of significantly better quality.

In this paper, we describe our approach to estimating the geographic location of videos. Our system relies on textual meta-data and includes two basic term filtering strategies: filtering according to the general use of terms and filtering according to the geographic spread. Combining both filtering steps yields 50% accuracy within a 10km range.

Being able to identify locations associated to a Web resource is essential for providing location-based Web applications. However, geographical information in Web documents is rarely supplied in a machine-readable way and therefore not easily discoverable. As a consequence, it is necessary to extract geographical keywords from Web documents and to associate locations with them. This method is c...

Supporting nodes without Global Positioning System (GPS) capability, in wireless ad hoc and sensor networks, has numerous applications in guidance and surveying systems in use today. At issue is that a procedure be available so that the subset of nodes with GPS capability succeed in supporting the maximum possible number of nodes without GPS capability and as a result enable the highest connect...

Interactive social media platforms offer a tremendous amount of volunteered, user-generated content (Flickr, Twitter, etc.). Together with volunteered geographic information (VGI) they potentially provide a valuable source of information which is increasingly recognized, but particularly in GIScience not utilized to its full potential. Twitter as one location-based social network in particular,...