Abstract: In an example, a network is described with a plurality of data sources. Each data source may provide a feature, such as a data type that the data source collects or generates. A data aggregator may be connected to the network, and configured to collect, classify, and merge features as appropriate. The data aggregator includes a discriminator for classifying features, a merger, unmerger, converter, and evaluator. Features are provided to one or more expert systems configured to control one or more systems based on the features. Feedback to the data aggregator is used to evaluate the success of a merge. When a merge is found to be unhelpful, features may be unmerged.

Abstract: A database system uses indexes to improve performance. The system can use one or more of the following: differentiated subfields for index clustering; set function calculations to reduce the amount of I/O; and/or using an inferred index in a circular table.

Abstract: In an example, a network is described with a plurality of data sources. Each data source may provide a feature, such as a data type that the data source collects or generates. A data aggregator may be connected to the network, and configured to collect, classify, and merge features as appropriate. The data aggregator includes a discriminator for classifying features, a merger, unmerger, converter, and evaluator. Features are provided to one or more expert systems configured to control one or more systems based on the features. Feedback to the data aggregator is used to evaluate the success of a merge. When a merge is found to be unhelpful, features may be unmerged.

Abstract: A database system uses indexes to improve performance. The system can use one or more of the following: differentiated subfields for index clustering; set function calculations to reduce the amount of I/O; and/or using an inferred index in a circular table.

Abstract: A database system uses indexes to improve performance. The system can use one or more of the following: differentiated subfields for index clustering; set function calculations to reduce the amount of I/O; and/or using an inferred index in a circular table.

Abstract: A database system uses indexes to improve performance. The system can use one or more of the following: differentiated subfields for index clustering; set function calculations to reduce the amount of I/O; and/or using an inferred index in a circular table.

Abstract: Systems and methods reduce a time to calculate an aggregate of data values associated with a range of index entries. The system manages aggregate values within data stored in the entries of an index during insertion, modification, and deletion operations, and provides new index operations to generate aggregate values associated with a range of index entries. Multiple simultaneous operations can be executed efficiently.

Abstract: A database system uses indexes to improve performance. The system can use one or more of the following: differentiated subfields for index clustering; set function calculations to reduce the amount of I/O; and/or using an inferred index in a circular table.

Abstract: A database system uses indexes to improve performance. The system can use one or more of the following: differentiated subfields for index clustering; set function calculations to reduce the amount of I/O; and/or using an inferred index in a circular table.

Abstract: A database system uses indexes to improve performance. The system can use one or more of the following: differentiated subfields for index clustering; set function calculations to reduce the amount of I/O; and/or using an inferred index in a circular table.

Abstract: In a tape winding machine, a vacuum probe assembly for attaching one end of a section of tape to an adhesive patch oriented on the periphery of a reel mounted within a cartridge, and means for winding the tape on the reel, severing the tape an reattaching the trailing end to the vacuum probe for subsequent adherence to the reel of the next cartridge.

Abstract: Winding apparatus for continuously winding tape media upon reels contained within closed cartridges. The winding apparatus includes means for supplying cartridges alternatively to three separate in-line winding channels all of which perform a winding function and then collecting the wound cartridges off the individual lines and presenting an output station for a subsequent packing operation. Each channel includes vacuum extension means for reaching through an opening in each cartridge to apply an adhesive patch to the hub of the reel contained within the cartridge. Each line also includes means for continuously supplying tape media to a wind station for winding upon the reels passing through that line. At the wind station, additional vacuum means bring the leading edge of the media into the cartridge and press it against the adhesive patch, thereby attaching the media to the reel.