short-term frequency stability 短期频率稳定度 ; 频率短期稳定度
term frequency 检索词频率 ; 中出现的次数
long-term frequency drift 长期频率漂移
Term Frequency data 词频数据
term frequency stability 短期频率稳定度
Normalized Term Frequency 正规化词频率
long-term frequency stability 长期频率稳定度
term frequency drift 长期频率漂移
It is shown by the experiment that considering the term with high term frequency during feature selection can improve the classification performance of the traditional DF method.
实验结果表明,在进行特征选择时,考虑高词频特征词对类别的贡献,可提高传统DF方法的分类性能。
参考来源 - 基于文档频率的特征选择方法·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
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。
Hurricane scientists, for instance, would like to know about long-term changes in the frequency and strengths of the storms they study.
例如，研究飓风的科学家们想知道他们所研究的飓风在长时期内的发生频率和风力强度的变化。
Based on it, we doa deep research on the space distribution and time distribution from the view of term frequency, mutual information and word similarity.
在此基础上，我们进行了新词特征的挖掘，从串频、互信息和相似度等角度主要对新词的空间分布规律和时间分布规律进行了分析。
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