An algorithm based on rough set theory for extracting rules from data class by class is proposed.

提出一种基于粗糙集理论的分类别进行规则抽取的算法。

youdao

A summary for all objects on the heap is given first, then the statistics are broken down class by class.

首先给出堆中所有对象的一个总结，然后分别是各个类的统计数据。

youdao

Yet despite the muddle over what the markers of class are these days, 71% of those polled by YouGov still said they found it very or fairly easy to figure out which class others belong to.

然而，尽管这些日子里人们对阶级的标志是什么还很困惑，但在 YouGov 的民意调查中，71%的受访者仍然表示，他们发现要弄清楚其他人属于哪个阶级是非常或相当容易的。

youdao

He said his views were influenced by the many poor and working class people he had met in his life.

VOA: special.2010.05.21

And, by all means, if you are scheduled to attend class at 11:00, please take the test at 11:00.

当然，如果你安排到11：00参加考试的话，请在11：00参加考试。

麻省理工公开课 - 固态化学导论课程节选

When we started with the entire class, I showed the children how to bind the book by hand.

这门课最开始的时候，我向孩子们展示了如何把书用绳子缝起来。

麻省理工公开课 - 媒体、教育、市场课程节选

Dewey said the Ninth Circuit allowed the plaintiff lawyers to sidestep a number of onerous provisions of class action law by certifying the class under a provision providing for injunctive relief.

FORBES: Supreme Court Takes On Massive Wal-Mart Discrimination Case

At stake are two political traditions: the old, working-class machine politics personified by Mr Martinez, and a middle-class reformist trend represented by Dade County's mayor, Alex Penelas.

ECONOMIST: Florida politics

This year, visitors are delighted to be returning to Bethlehem, where they can send franked letters by first class or by air mail.

BBC: Bethlehem post attracts festive flock