Abstract: The position of a mobile unit (12) within a detection zone is determined. An acoustic signal is emitted from the mobile unit and received along a first path (54). An echo of the signal is received after reflection from a surface (46) within said detection zone. The position of the mobile unit (12) within the detection zone is determined from the times of arrival of the signal and echo.

Abstract: In a method for information access, search, and retrieval over a data communication system generally, wherein a query is applied to a set of documents, a result set of the matching documents and query-dependent subsections of the matching documents are identified. The method comprises computing summary information on document scopes, values and associated weights across the result sets and weighting the values with a summary value metric which provides a measure of the probability of a value. In a search engine (100) capable of supporting and implementing the above method, the search engine comprises as per se known subsystems for performing search and retrieval in the form of one or more core search engines (101), a content application programming interface (102), a content analysis stage (103) and a client application programming interface (106) connected to the core search engine (101) via query analysis and result analysis stages (105; 106).

Abstract: In a method for administrating data storage in an information search and retrieval system, particularly in an enterprise search system, wherein the system implements indexing and search applications and comprises a suitable search engine, and data storage devices and a data communication system which together realize a network storage system provided with an application interface, the network storage system divided in distinct logical volumes which are associated with the physical data storage units and configured depending on the application in one of a read-write mode mounted on one computer, a read-only mode mounted on one or more computers, or a floating and unmounted mode.

Abstract: In a method for composing and presenting information in a user context, the information shall be presented for the user on a man-machine interface in the form of a visual or graphic display. The method comprises steps for determining a user context in which the information is required, selecting a set of content sources, and the content components are retrieved from the content sources. The information in selected content components are computed using an information measure that reflects the information as perceived by human cognition, and an optimum presentation of the selected content components are determined and presented for the user.

Abstract: In a method for administrating data storage in an information search and retrieval system, particularly in an enterprise search system, wherein the system implements indexing and search applications and comprises a suitable search engine, and data storage devices and a data communication system which together realize a network storage system provided with an application interface, the network storage system divided in distinct logical volumes which are associated with the physical data storage units and configured depending on the application in one of a read-write mode mounted on one computer, a read-only mode mounted on one or more computers, or a floating and unmounted mode.

Abstract: In a method for information access, search, and retrieval over a data communication system generally, wherein a query is applied to a set of documents, a result set of the matching documents and query-dependent subsections of the matching documents are identified. The method comprises computing summary information on document scopes, values and associated weights across the result sets and weighting the values with a summary value metric which provides a measure of the probability of a value. In a search engine (100) capable of supporting and implementing the above method, the search engine comprises as per se known subsystems for performing search and retrieval in the form of one or more core search engines (101), a content application programming interface (102), a content analysis stage (103) and a client application programming interface (106) connected to the core search engine (101) via query analysis and result analysis stages (105;106).