A slide rail assembly includes a fixed rail, a movable rail, and a lever member engageable to the fixed rail. To perform similarity matching of multimedia query frames against reference content, reference database comprising of a cluster index using cluster keys to perform similarity matching and a multimedia index to perform sequence matching is built. A server in the network incorporates other generic portions of the questionnaire. A random number is generated and utilized to randomize the value of a message. Wrappers are developed that provide statistical consistency with existing interfaces and are integrated into the new vision system.