When the time is expressed as a function of various data rates, the optimum set of data rates for concurrent user groups to achieve minimum transmission time can be derived.

对于多媒体业务，当我们让传输时间是可变数据速率的函数时，该方案即可找出当前用户组的最优数据速率集，以使系统的传输时间最小。

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For U.S. stocks we set an optimum mix based on style and sector of the economy.

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Users can choose the one closest to the situation they are going to shoot and optimum parameters for shooting the scene will be automatically set.

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