Data Mining Method of Spatial Frequent Wordset from Social Database

摘要

A data mining method of a data mining server according to the present invention includes the following steps: maintaining a spatial social database (SSDB), minimum spatial support count information, and spatial partition hierarchical grid information; constructing an SFP-tree composed of a spatial prefix tree (sfptree) for storing information on spatial frequent wordsets and counts of each cell, and a header table (FT_(1-word-cell)) having information on a one word-space cell frequency; and searching for spatial frequent wordsets having frequency counts greater than or equal to the minimum spatial support count information in a spatial hierarchy tree from the spatial prefix tree (sfptree) and the header table (FT_(1-word-cell)).