Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for managing entities using observations. In one aspect, a method includes receiving data identifying an entity; generating a user interface document that, when rendered by a user device, presents a plurality of attribute values to a user and allows the user to modify one or more of the plurality of attribute values; and storing an observation in a data store, the observation including a user-modified value of one of the plurality of attribute values and a context including one or more of the presented attribute values.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for managing entities using observations. In one aspect, a method includes receiving data identifying an entity; generating a user interface document that, when rendered by a user device, presents a plurality of attribute values to a user and allows the user to modify one or more of the plurality of attribute values; and storing an observation in a data store, the observation including a user-modified value of one of the plurality of attribute values and a context including one or more of the presented attribute values.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for managing entities using observations. In one aspect, a method includes receiving an observation, the observation including an updated piece of information about an entity and a context, wherein the context includes at least one value of an attribute describing the entity to which the updated piece of information relates; matching the received observation with a first cluster of observations representing the entity using the context; and associating the received observation with the first cluster of observations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for managing entities using observations. In one aspect, a method includes receiving data identifying an entity; generating a user interface document that, when rendered by a user device, presents a plurality of attribute values to a user and allows the user to modify one or more of the plurality of attribute values; and storing an observation in a data store, the observation including a user-modified value of one of the plurality of attribute values and a context including one or more of the presented attribute values.

Abstract: A method of analyzing documents or relationships between documents includes receiving a notification of an available metadata document containing information about one or more network-accessible documents, obtaining a document format indicator associated with the metadata document, selecting a document crawler using the document format indicator, and crawling at least some of the network-accessible documents using the selected document crawler.

Abstract: A method of analyzing documents or relationships between documents includes receiving a notification of an available metadata document containing information about one or more network-accessible documents, obtaining a document format indicator associated with the metadata document, selecting a document crawler using the document format indicator, and crawling at least some of the network-accessible documents using the selected document crawler.

Abstract: A method of analyzing documents or relationships between documents includes receiving a notification of an available metadata document containing information about one or more network-accessible documents, obtaining a document format indicator associated with the metadata document, selecting a document crawler using the document format indicator, and crawling at least some of the network-accessible documents using the selected document crawler.

Abstract: A method of analyzing documents or relationships between documents includes receiving a notification of an available metadata document containing information about one or more network-accessible documents, obtaining a document format indicator associated with the metadata document, selecting a document crawler using the document format indicator, and crawling at least some of the network-accessible documents using the selected document crawler.

Abstract: A method of analyzing documents or relationships between documents includes receiving a notification of an available metadata document containing information about one or more network-accessible documents, obtaining a document format indicator associated with the metadata document, selecting a document crawler using the document format indicator, and crawling at least some of the network-accessible documents using the selected document crawler.

Abstract: A method of analyzing documents or relationships between documents includes receiving a notification of an available metadata document containing information about one or more network-accessible documents, obtaining a document format indicator associated with the metadata document, selecting a document crawler using the document format indicator, and crawling at least some of the network-accessible documents using the selected document crawler.