In the aspect of cascade update of multi-scale massive spatialtemporal data, this article formulates the rules for discovery, recognition and cascade update of data change information, develops relevant model algorith...In the aspect of cascade update of multi-scale massive spatialtemporal data, this article formulates the rules for discovery, recognition and cascade update of data change information, develops relevant model algorithms, provides technical support for cascade update of cross-scale spatial data, and applies them to the update and maintenance of vector spatial-temporal data in smart cities, thus improving the efficiency of government decision-making and emergency command based on spatio-temporal big data.展开更多
文摘In the aspect of cascade update of multi-scale massive spatialtemporal data, this article formulates the rules for discovery, recognition and cascade update of data change information, develops relevant model algorithms, provides technical support for cascade update of cross-scale spatial data, and applies them to the update and maintenance of vector spatial-temporal data in smart cities, thus improving the efficiency of government decision-making and emergency command based on spatio-temporal big data.