一张谷歌词频统计图显示，到1993年时，在各类书中，气候变化这一词的使用频率就已经超过全球变暖。
A Google Ngram Viewer chart shows that by 1993 climate change was already more commonly used in books than global warming.
尽管如此，用于排序结果的数学模型通常是常用的词频/倒排文档频率模型的变体，而对于这种模型，已有很好的研究基础。
Still, the mathematical models used to rank results are usually some variation of the common term-frequency/inversed document frequency model, which is well-mapped territory.
所以，图书馆员有责任保证研究过程能够产生学术价值，而不只是产生关键词频率的列表。
It becomes the responsibility of librarians, therefore, to ensure that the research process is used to generate scholarship of value, instead of mere lists upon lists of keyword frequencies.
我们在mrjobPython框架中编写了这个简单的MapReduce作业，它执行单词频率统计。
A simple MapReduce job that does a word frequency count, written in our mrjob Python framework.
文本分析：在非结构化上下文中定义单词频率
Text analytics: Defining word frequency in unstructured context
Google的书籍词频统计器简直叫人着迷，它可以搜索成千上万书籍关键“词”的使用频率——从1800年到今天，然后生成一个图表。
We’re totally hooked on Google’s new book search tool, which lets you search and graph the frequency of words in millions of books from 1800 to today.
第一种尝试的焦点是，如何基于确定单词频率，建立您自己的XQuery 文本挖掘技术。
The first attempts were focused on how to build your own XQuery text-mining techniques based on determining word frequencies.
采用词汇判断任务考察了留学生汉语单字词识别中的笔画数效应、词频效应和词素频率效应。
This paper aims to explore the stroke effect, word frequency effect and morpheme frequency effect in the recognition of Chinese one-character word by foreign students.
统计结果证明，从字词频率、平均字长和句长这些语言变量方面讲，六级作文的语言水平略高于四级作文。
The result indicates that CET6 writers show higher language proficiency from the perspective of word frequency, average word length and sentence length.
它们可以用于经由过程给定内容或者类型对单词频率计数。
They can be used for counting word frequencies, given a context or a genre.
它们可以用于通过给定内容或者类型对单词频率计数。
They can be used for counting word frequencies, given a context or a genre.
采用词汇判定法，考察首词频率和尾词频率对高熟悉度四字成语识别的影响。
Lexical decision method was used to examine the effect of initial word frequency and last word frequency of Chinese idioms on the highly familiar idiom recognition time.
采用词汇判定法，考察首词频率和尾词频率对高熟悉度四字成语识别的影响。
Lexical decision method was used to examine the effect of initial word frequency and last word frequency of Chinese idioms on the highly familiar idiom recognition time.
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