Study of Spatial Data Quality Elements and VGI Linear Data Quality Assessment Methods

Volunteered Geographic Information has provided a rich and valuable resource for spatial data in a variety of applications. Despite the many benefits, this information does not provide any guarantee for their quality. So far, there are several methods to determine the quality of VGI. In addition to introducing quality elements and their evaluation methods, the present study attempts to explore existing methods for assessing the VGI quality and the quality assessment methods based on the type of information used in the evaluation process, classified into three groups of methods focused on comparing VGI data with reference data, Focuses on contributor evaluation and focused on data history. In this review study, we will try to review the methods used to assess the quality of VGI in the absence of valid and reference data.