Abstract: Methods, systems, and apparatus, including computer programs stored on computer storage media, for populating a structured presentation with new values. One aspect can be embodied in machine-implemented methods that include the actions of receiving description data describing a preexisting structured presentation, comparing characteristics of the preexisting structured presentation with content of electronic documents in an unstructured collection of electronic documents to locate electronic documents that identify a new value that is relevant to the preexisting structured presentation, adding the new value to the preexisting structured presentation to form a new structured presentation, and outputting instructions for visually presenting the new structured presentation.

Abstract: Methods, systems, and apparatus, including computer programs stored on computer storage media, for retrieval and display of information from an electronic document collection. In one aspect, a machine-implemented method includes the actions of receiving description data describing a preexisting structured presentation, comparing characteristics of the preexisting structured presentation with content of electronic documents in an unstructured collection of electronic documents to locate electronic documents that identify a new instance that is relevant to the preexisting structured presentation, adding an identifier of the new instance to the preexisting structured presentation to form an expanded structured presentation, and outputting instructions for presenting the expanded structured presentation.

Abstract: Methods, systems, and apparatus, including computer programs stored on computer storage media, for retrieval and display of information from an electronic document collection. One aspect can be embodied in machine-implemented methods that include the actions of receiving description data describing a preexisting structured presentation, comparing characteristics of the preexisting structured presentation with content of electronic documents in an unstructured collection of electronic documents to locate electronic documents that identify a new attribute that is relevant to the preexisting structured presentation, adding an identifier of the new attribute to the preexisting structured presentation to form an expanded structured presentation, and outputting instructions for presenting the expanded structured presentation.