Spatio-temporal data quick retrieval method based on MF-Octree
A fast technology for spatiotemporal data, applied in other database retrieval, digital data information retrieval, other database indexing, etc., can solve the problems that cannot meet the spatiotemporal data spatiotemporal retrieval application, limit the application of spatiotemporal query technology, etc., to reduce query response time, Meet the real-time requirements and the effect of real-time problems
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[0080] Step 1, establish a time axis based on time;
[0081] Step 2, when receiving the newly arrived spatio-temporal data, store the newly arrived spatio-temporal data in the octree based on the Z-order curve; wherein the octree is sequentially located at the time according to the time attribute of the spatio-temporal data it stores on the corresponding time period of the axis;
[0082] Step 3, when a query request is received, use the preset constraint model to preprocess the query data; then, according to the time attribute of the query request, find the root node of the octree that meets the corresponding time attribute on the time axis;
[0083] Step 4, calculate the correlation degree ranking scores of each node in the octree to which the root node belongs, and output the nodes whose correlation degree ranking score value is less than the preset correlation degree sorting score standard value as the query result; the specific process for:
[0084] Step 4.1, set the num...
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