Abstract: Data objects are organized into attributes and can be acted upon using predefined actions and associated types to greatly simplify user accessibility to such data objects through the limited user interface and bandwidth capabilities of a mobile device. Each data object is associated with a numerical identifier such that the user can easily identify a data object of interest using the limited data entry capabilities of the typical mobile device.

Abstract: Data objects are organized into attributes and can be acted upon using predefined actions and associated types to greatly simplify user accessibility to such data objects through the limited user interface and bandwidth capabilities of a mobile device. Each data object is associated with a numerical identifier such that the user can easily identify a data object of interest using the limited data entry capabilities of the typical mobile device.

Abstract: A system for facilitating exchange of user information and opinion using automated collaborative filtering includes memory elements for storing item profiles and user profiles. The data contained in those profiles is used to calculate a number of similarity factors representing how closely the preferences of one user correlate with another. The similarity factors are evaluated to select a set of neighboring users for each user which represents the set of users which most closely correlate with a particular user. The system assigns a weight to each one of the neighboring users. The system uses the ratings given to items by those neighboring users to recommend an item to a user. The system may be distributed, i.e. the system may include a number of nodes connected to a central server. The central server includes a memory element for storing user profile data and the nodes may be the type of system described above.

Abstract: An object for providing isolated, hierarchical data storage can be used in a method for recommending an item to one of a plurality of users. The data object abstracts an associated physical memory element and provides an interface for storing data and retrieving data from the physical memory element. In some embodiments the data object is provided with an indicator for identifying another data object that is used if a memory request is unable to be serviced by the associated physical memory element. In other embodiments this data object can be used to efficiently and transparently store profile data associated with a system for recommending items to users.