Abstract: A facility for producing an item recommendation for a selected user is described. The facility accesses an information resource that, for each of a number of buckets that each correspond to a different collection of personal information, identifies users for a members of the bucket into each of whom the entire collection of personal information applies. The facility selects a bucket among the plurality of buckets of which the selected user is a member. The facility accesses a number of item ratings that were each contributed by a member of the selected bucket other than the selected user. For each item rated among the accessed item ratings, the facility aggregates the ratings of the item. On the basis of items' aggregated ratings, the facility selects one or more rated items for recommendation to the selected user.

Abstract: A facility for producing an item recommendation for a selected user is described. The facility accesses an information resource that, for each of a number of buckets that each correspond to a different collection of personal information, identifies users for a members of the bucket into each of whom the entire collection of personal information applies. The facility selects a bucket among the plurality of buckets of which the selected user is a member. The facility accesses a number of item ratings that were each contributed by a member of the selected bucket other than the selected user. For each item rated among the accessed item ratings, the facility aggregates the ratings of the item. On the basis of items' aggregated ratings, the facility selects one or more rated items for recommendation to the selected user.

Abstract: Server array capacity calculator systems and methods are provided for estimating capacity based on diagnostic data. For example, a system comprising a database and an estimator computing device comprising a graphical user interface (GUI) and a capacity management module stored in memory and executed on a processor comprising instructions to receive diagnostic data from a plurality of servers of different server types, receive user input via the GUI, and in response to the user input, and for each of the server types, compute a current reference number of servers from current server efficiency estimates and a current number of utilized servers; calculate a growth multiplier from a ratio of the projected number of users and a count of the current concurrent users; generate a projected number of servers by multiplying the current reference number of servers with the growth multiplier, and display the projected number of servers on the GUI.

Abstract: Server array capacity calculator systems and methods are provided for estimating capacity based on diagnostic data. For example, a system comprising a database and an estimator computing device comprising a graphical user interface (GUI) and a capacity management module stored in memory and executed on a processor comprising instructions to receive diagnostic data from a plurality of servers of different server types, receive user input via the GUI, and in response to the user input, and for each of the server types, compute a current reference number of servers from current server efficiency estimates and a current number of utilized servers; calculate a growth multiplier from a ratio of the projected number of users and a count of the current concurrent users; generate a projected number of servers by multiplying the current reference number of servers with the growth multiplier, and display the projected number of servers on the GUI.