Annotating and visualizing location data in geospatial web applications

Abstract

This paper presents the IDIOM Media Watch on Climate Change (www.ecoresearch.net/climate), a prototypical implementation of an environmental portal that emphasizes the importance of location data for advanced Web applications. The introductory section outlines the process of retrofitting existing knowledge repositories with geographical context information, a process also referred to as geotagging. The paper then describes the portal's functionality, which aggregates, annotates and visualizes environmental articles from 150 Anglo-American news media sites. From 300,000 news media articles gathered in weekly intervals, the system selects about 10,000 focusing on environmental issues. The crawled data is indexed and stored in a central repository. Geographic location represents a central aspect of the application, but not the only dimension used to organize and filter content. Applying the concepts of location and topography to semantic similarity, the paper concludes with discussing information landscapes as alternative interface metaphor for accessing large Web repositories.

Geographic Information Retrieval and Text Mining on Chinese Tourism Web Pages

“…Relevant major modules include a semantic retrieval module, a geographic information retrieval module, a TCP/IP Socket connection Map is the center of operation and inquiry interface in the whole system. Document content and geographic information on spatial position are connected to each other through hyperlinks on the map, which is also the concept of Geospatial Web promoted by Scharl (2007Scharl ( , 2008, where all information and operations are connected with map (figure six). The design of the experiment uses Google search engine and Google Local Search as platforms for semantics and space testing and comparison, setting multiple search keyword strings and having Google Search and Local Search conduct searches and experiments as well as result comparisons.…”

Automated spatiotemporal and semantic information extraction for hazards

“…Similar to GIPSY, the web-a-where system employs a thesaurus-based approach to identify geographic locations from web pages (Amitay et al 2004). This system uses geotagging, a process of adding geographic references (e.g., place names) to different medias (e.g., web pages), to tag each place name with geographic coordinates (Scharl et al 2008). The web-a-where system determines a geographical focus for each document (Amitay et al 2004).…”