| 摘要 |
Under one aspect, an interface program stored on a computer-readable medium causes a computer system with a display device to perform the functions of: accepting search criteria from a user, the search criteria including a free-text query and a domain identifier, the domain identifier identifying a physical location; in response to accepting said search criteria from the user, receiving a set of document-location tuples from a corpus of documents, each document-location tuple satisfying the search criteria from the user; organizing the document-location tuples into a hierarchical graph structure, the hierarchical graph structure representing hierarchical spatial relationships between the physical locations; and displaying a visual representation of the hierarchical graph structure on the display device. |
