Abstract: The invention is directed to a method, computer program product and computer system for creating an index of a subset of data, comprising: a first step of receiving: a set of data; a first index of said set of data; and identifiers of a subset of data of said set; and a second step of creating a second index of said subset of data according to the first index and said identifiers.

Abstract: A database of entries, such as Web pages and sites, is provided. The entries are at least partially mapped to a set of predetermined categories. The entries are also associated with keywords, for instance, by automatic indexing of documents. In response to a query into the database, a user is provided with a series of refinement strategies, in addition to search results. Refinement strategies comprise categories relevant for the search, selected among the set of predetermined categories. Refinement strategies also include keywords dynamically selected among keywords associated with the entries. The user may easily navigate among the results to the query, and formulate new queries.

Abstract: The invention is directed to a program for accessing information records on a computer, the program being adapted for operating on the computer and comprising: an indexer adapted to build an index of information records stored in at least two information systems present on the computer; wherein an information system provides access to information records using at least an interface such as a user interface, an application programming interface, or a procedure call interface; an agent adapted to receive requests from a terminal remote from the computer and to serve said requests using said index. A person travelling is thus able to get access to his or her own information stored on his or her personal computer at home or at work, using for instance another computer, a personal digital assistant (PDA), a smartphone. It can furthermore act on these information records, using the service available on his local computer.

Abstract: A collection of documents comprises referencing documents, such as html documents, and referenced documents, such as images or audio documents. Referenced documents are referenced in the referencing documents. In response to a search query, a search engine displays to the user information or attributes of the referenced documents, as well as an excerpt of the referencing document.

Abstract: A database of entries, such as Web pages and sites, is provided. The entries are at least partially mapped to a set of predetermined categories. The entries are also associated with keywords, for instance, by automatic indexing of documents. In response to a query into the database, a user is provided with a series of refinement strategies, in addition to search results. Refinement strategies comprise categories relevant for the search, selected among the set of predetermined categories. Refinement strategies also include keywords dynamically selected among keywords associated with the entries. The user may easily navigate among the results to the query, and formulate new queries.