The design of packet scheduling strategy and algorithm is one of the most important issues for the high-speed packet-switched networks.

在高速分组交换网络中，分组调度策略和算法的设计是一个关键问题。

The main theory of incremental crawling techniques is the evolution of web pages and the optimal scheduling strategy based on page evolution.

增量搜集技术的核心理论依据是网页的变化规律和以此为基础的最优化调度策略。