The experimental results show that the selective features are valid and effective.

实验结果表明，所选择的特征是合理的、有效的。

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It has been proved by an application of the model that it is valid and effective to discover association rules by using this model.

通过该模型的一个应用实例证明利用这个模型来发现关联规则是可行的、有效的。

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Before the entry into force of this law, any judgment that has been made and has become effective according to the laws at the time shall remain valid.

本法施行以前，依照当时的法律已经作出的生效判决，继续有效。

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Whenever possible, each provision of these terms shall be interpreted in such manner as to be effective and valid under applicable law, but if any provision is deemed prohibited or invalid under applicable law, such provision shall be ineffective to the extent of such prohibition or invalidity without invalidating the remainder of such provision or the remaining provisions of these terms.

CENTERFORSECURITYPOLICY: Terms of Use

If we took half the energy we spend denouncing stereotypes and applied it to making sure that our stereotypes are valid we would be far more effective in managing our bosses, colleagues, prospects, customers, and even our personal lives.

FORBES: The Confession of a Serial Stereotyper: How to Stereotype Your Way to Success