A portal information taxonomy (or Navigation taxonomy, as usually defined within the field of information Architecture) is the orderly classification of terms used to navigate the portal.

门户信息分类(或导航分类，通常是在信息体系结构领域内定义的)是按照一定的顺序划分用于导航门户的内容的类别。

youdao

Text orientation recognition has broad application in some field such as information filtering, automatic abstracting and text classification.

文本倾向性识别在信息过滤、自动文摘、文本分类等领域有广泛的应用前景。

youdao

Vegetation classification is an important part of vegetation research, which is also the most complex problem in that field.

植被分类是植被研究的重要组成部分，亦是植被研究中最复杂的问题之一。

youdao

Some in the field have been frustrated by the classification system, which focuses on behavioral symptoms and not on chemical changes or brain abnormalities.

WSJ: Revised Psychiatric Manual Faces Mixed Reviews

The numbers were combined to find an overall rating of employee happiness for each respondent, and then they were sorted by field to find the six happiest and six unhappiest industries (as defined by the North American Industry Classification System ( NAICS)).

FORBES: The Happiest And Unhappiest Industries To Work In Right Now