Sökning: "Volunteered Geographic Information VGI"

Hittade 4 uppsatser innehållade orden Volunteered Geographic Information VGI.

  1. 1. Developing Data Extraction and Dynamic Data Visualization (Styling) Modules for Web GIS Risk Assessment System (WGRAS)

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Daniel Assefa; [2018]
    Nyckelord :Geographical Information Systems; GIS; Disaster Risk Management; web GIS; Volunteered Geographic Information VGI ; Map Visualization and styling; Geo-spatial data extraction; OpenStreetMap OSM ; Earth and Environmental Sciences;

    Sammanfattning : Interactive web-GIS tools play an important role in determining disaster risk assessment which ultimately result in reduction of unexpected damages, cost and saves millions of lives. Disaster management practitioners largely benefited information at their disposal about location where possible incidents are eminent, anticipate the impact and project possible outcomes to help mitigate and organize proper response. LÄS MER

  3. 2. Development of an automated matching algorithm to assess the quality of the OpenStreetMap road network : a case study in Göteborg, Sweden

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Julian Will; [2014]
    Nyckelord :OpenStreetMap; automated matching; quality assessment; volunteered geographic data; linear features; Physical Geography and Ecosystem analysis; Earth and Environmental Sciences;

    Sammanfattning : In the last decade a new and alternative source of geospatial data has become available, so called Volunteered Geographic Information (VGI). Private individuals voluntarily collect large amount of geographic data for a joint project. This data are usually free under certain licence restrictions. LÄS MER

  4. 3. Exploring Spatio-Temporal Patterns of Volunteered Geographic Information : A Case Study on Flickr Data of Sweden

    Kandidat-uppsats, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

    Författare :Yufan Miao; [2013]
    Nyckelord :Big Data; VGI; Flickr; Delaunay Triangulation; Power Law; Scaling Analysis; Spatio-Temporal Pattern;

    Sammanfattning : This thesis aims to seek interesting patterns from massive amounts of Flickr data in Sweden with pro- posed new clustering strategies. The aim can be further divided into three objectives. The first one is to acquire large amount of timestamped geolocation data from Flickr servers. LÄS MER

  5. 4. Robustness of Spatial Databases: Using Network Analysis on GIS Data Models

    Magister-uppsats, Institutionen för teknik och byggd miljö

    Författare :Finn Hedefalk; [2010]
    Nyckelord :GIS; Database; UML; VGI; Power-law; Small-world; Error and attack tolerance; Network;

    Sammanfattning : Demands on the quality and reliability of Volunteered Geographic Information have increased because of its rising popularity. Due to the less controlled data entry, there is a risk that people provide false or inaccurate information to the database. LÄS MER