(3)提出一种多粒度的TCURLs优先级计算(PUMG，Prioritizing URLs in Multi-Granularities)方法。 主题爬行的基本思想就是计算爬行队列中的待爬行URLs(TCURLs，To Crawl URL...
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这部分内容介绍了如何更改用于计算每个线程优先级值的CPU调度参数。
This section shows how you can change some of the CPU scheduling parameters, which are used to calculate the priority value for each thread.
当执行这些计算时，也将考虑不同任务的优先级值。
The priority values of different tasks are also considered while doing these calculations.
在近几年里，由于预算的削减以及将优先级给以了那些做为标准化考试基础的核心课程，做为选修课的计算机科学教育已经遭到了削减。
And computer science programs, typically elective courses, have suffered in recent years because of budget cuts and the priority given to core courses that are the basis of standardized tests.
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