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Tag Archive 'quality analysis'

Geographic information crowdsourcing is an increasingly popular approach to derive geographic data about human settlements from remotely sensed imagery. However, crowdsourcing approaches are frequently associated with uncertainty about the quality of the information produced. Although previous studies have found acceptable quality of crowdsourced information in some application domains, there is still lack of research about [...]

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Crowdsourced Geographic Information (CGI) has emerged as a potential source of geographic information for different domains. Despite advantages associated with it, such information lacks quality assurance, since it is provided by different individuals. Several authors have investigated different approaches to assess CGI quality. Some of the existing methods have been summarized in different classification schemas. [...]

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VGI-Analytics 2017
Volunteered Geographic Information (VGI) and social media data have become part of our everyday lives over the past few years. Whereas in the early beginnings of crowd-sourced data the collection occurred primarily to isolated, individual platforms, contribution patterns are now beginning to be more intertwined between different platforms, both [...]

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VGI-Analytics 2017 is the 4th workshop in a series of AGILE pre-conference workshops
Volunteered Geographic Information (VGI) and social media data have become part of our everyday lives over the past few years. Whereas in the early beginnings of crowd-sourced data the collection occurred primarily to isolated, individual platforms, contribution patterns are now beginning to be more [...]

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On Tuesday 17th January, the CAP4Access/MyAccessible.EU came to a close after three years with the successful completion of the final European Commission review meeting in Brussels. Reviewers were highly pleased with the outcomes of the project, both on the technical and societal fronts.
At GIScience in Heidelberg, through the EC FP7 project we have extended the [...]

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cfp: VGI-Analytics 2017
Volunteered Geographic Information (VGI): Integration, ANALYsis, applICationS
Tuesday, 9th May 2017, Wageningen University, The Netherlands at AGILE 2017

VGI-Analytics 2017 is the [...]

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Last week on Monday 12th, we organized a workshop for the CAP4Access project that aimed to discuss ideas and methods on how the developed tools and services within the project would be exploited especially after the project has came to an end.
Dr. Emmanuel Sofianopoulos was the expert for the workshop appointed by the European Commission. The workshop [...]

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Recently some of our work on intrinsic VGI quality analysis has been published. In this work we propose a framework to assess the quality of OSM building footprints data without using any reference data. More specifically, the OSM history data will be examined regarding the development of attributes, geometries and positions of building footprints. In [...]

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Successfull PhD Defence by Yingwei YAN

Our recent team member Dr. Yingwei YAN successfully defended his PhD thesis this very week.
We do congratulate him most cordially!
The thesis was conducted at the National University of Singapore at the Department of Geography before he joined the GIScience Heidelberg team. Yingwei worked for example on using fuzzy set theory to assure the [...]

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This Friday, Nov 4th, Alexander Zipf from GIScience Heidelberg will give a presentation at the WhereCamp 2016 conference in Berlin about some current activities and developments in the currently being established Heidelberg Institute for Geoinformatics (HeiGIT), core funded by the Klaus Tschira Foundation. This includes latest developments in Routing and Navigation solutions, such as OpenRouteService [...]

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