| Assessing the Reliability of Contributors in VGI based on Implicit Factors |
| Paper ID : 1093-GEOSPATIAL (R5) |
| Authors: |
|
Rezvan Ghasemi Nejad *1, Rahim Ali Abbaspour2, Alireza Chehreghan3 1School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran,Iran 2SGS, CoE, UT 3Faculty of Mining Engineering, Sahand University of Technology, Tabriz, Iran |
| Abstract: |
| VGI projects include geographic information, which are the product of many unorganized volunteers, making it a challenge to ensure the quality of their information. In this field of study, several researchers have suggested using intrinsic factors to evaluate the quality of VGI instead of using explicit methods such as comparing with real or reference datasets. In addition, the measurement of the reliability of VGI contributors as an essential intrinsic factor in determining the credibility of their contributions remains an open question. Various types of contributors’ activities and interactions are introduced and discussed in detail in this study at first. Then a comprehensive spatio-temporal contributor reliability model is proposed to assess their performance based on multiple implicit interactions between volunteers in their contribution process. Finally, several cities with different contribution rate (based on their population, number of users and area extent) are chosen and the proposed model is applied to selected study areas’ data, and the results are compared and discussed. |
| Keywords: |
| Volunteered Geographic Information (VGI), Reliability, OpenStreetMap (OSM), Intrinsic Measures, Contributors, Implicit Interactions |
| Status : Paper Accepted (Oral Presentation) |
