| 摘要 |
Sketches are generated for each node in a graph. For undirected graphs, each sketch for a node may include an indicator of a node from a seed set of nodes and the shortest distance between the node and the indicated node. When a request is received for the shortest distance between two nodes of the graph, the sketches for each of the two nodes are retrieved, and nodes that are indicated in both of the sketches are determined. The distances between each of the two nodes and a determined node as indicated in the sketches is summed for each of the determined nodes, and the sum having the least distance is selected as the estimated shortest distance between the two nodes.
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