| 摘要 |
<P>PROBLEM TO BE SOLVED: To support retrieval in a graph which treats data elements as nodes and has links of relations between data elements, even when the data elements relations between a plurality of links do not strictly specify conditions to be met. <P>SOLUTION: A user specifies, on a reference node reception unit 12 and a retrieval condition reception unit 16, respectively, a reference node indicating a reference position in a graph and retrieval conditions for specifying subgraphs to be retrieved. A retrieval processing unit 26 retrieves subgraphs meeting the retrieval conditions from the graph. A sort unit 30 creates ranking of the individual retrieval results on the basis of, for example, a hop count from the reference node. A sort result presentation unit 42 provides a representation image representing each retrieval result in association with information about a path from the reference node to a subgraph of the retrieval result on the graph. The user refers to the path information to select what he/she wants from the retrieval results. <P>COPYRIGHT: (C)2012,JPO&INPIT |
