For the given unclassified model, feature selection requires us to select the most excellent feature subset and it can represent the model which is classified.
对于一个给定的待分类模式，特征选择要求人们从大量的特征中选取一个最优特征子集，以代表被分类的模式。
It's an excellent feature that's only available in DB2 9.7 and is one that should be activated if parameterized queries are not available for a given development framework.
这个出色特性只在DB 2 9.7中可用；如果某个特定开发框架不能使用参数化查询，则应该激活这个特性。
It's a little pricey for home users, but it's an excellent feature for people who want to run a lot of services without worrying about security or other interactions between them.
对于家庭用户来说，它有点昂贵，但是对于想运行许多服务，却不想为安全性或者服务之间的其他交互担心的人来说，这是一个极好的特性。
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