Relational query method implemented on large-scale data set
A large-scale data and relational query technology, applied in the field of relational query with label restrictions, can solve the problems of sharp increase in index calculation, relational query method can not meet the requirements of entity relational query, increased calculation time, etc., to support expansion sexual effect
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[0036] The example of the present invention is based on the function of entity relationship query.
[0037] The overall method flow chart of the invention is as follows figure 1 Shown:
[0038] In the example, methods for abstracting directed graphs include:
[0039] Step 101: abstract entities in the semantic data graph into points, and abstract relationships between entities into directed edges.
[0040] Step 102: Abstract the edges corresponding to the same relationship into a label.
[0041] figure 2 It is a directed graph that has been abstracted, where the label represents the type of edge. Here, we define the length of the path between points as the number of types of labels on the path. Such as figure 2 As shown, there are two paths from point 1 to point 5, respectively p 1 (1, 2, 5), p 2 (1, 2, 3, 4, 5), the label sets of the two paths are {a, b} and {a} respectively, then according to our above definition, p 1 is of length 2, p 2 has a length of 1.
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