Compared with the traditional network mode, this new mode structure has many remarkable characteristics<br>The k-step pattern graph is a hierarchical graph, which is easy to traverse from top to bottom to get the meta path. The top level only contains the initial node type, and the bottom layer only contains the target node type.<br>Each meta path generated by traversing from the top to the bottom is an abstract mapping of the existing paths in the original heterogeneous information network;<br>
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