A Spatio-Temporal VGI Model Considering Trust-Related Information

ISPRS International Journal of Geo-Information

Hanfa Xing¹  Xiaoguang Zhou²  Yijiang Zhao²  Guangqiang Li² 

[1] College of Geography and Environment, Shandong Normal University, Jinan 250014, China;School of Geosciences and Info-physics, Central South University, Changsha 410083, China;

关键词: GIS;    VGI;    spatio-temporal model;    reputation;    trust;    operation;   

DOI  :  10.3390/ijgi5020010

来源: DOAJ

【 摘 要 】

Over the past several years, volunteered geographic information (VGI) has expanded rapidly. VGI collection has been proven to serve as a highly successful means of acquiring timely and detailed global spatial data. However, VGI includes several special properties. For example, the contributor’s reputation affects the quality of objects edited, and a geographic object may have multiple versions. The existing spatio-temporal data model cannot describe the unique properties of VGI. Therefore, a spatio-temporal VGI model considering trust-related information is presented in this paper. In this model, central elements of the VGI environment, e.g., geographic entity, entity state, state version, contributor, reputation, geographic event, and edit event, and their interaction mechanisms are analysed. Major VGI objects and relations are determined using the object-oriented method and trust-related operations, and their relationships are analysed, and nine linkage rules among trust-related operations are found to maintain the consistency of corresponding data. A prototype system for the spatio-temporal VGI model is presented, and the effectiveness of the model is verified.

【 授权许可】

Unknown