DF 就是Document Frequency,也就是说,如果今天我们手中有固定 N 篇文章,某个关键字的 Document Frquency (DF),就是说这个关键字在 N 篇文章里面出现了几次。Inverse Document Frequency (IDF) 则是把 DF 取倒数,如此一来,一个数字乘以 IDF,就等於是除以 DF 的意思。 有了 TF 和 IDF 以後,
简介: 词频-逆文档频率(Term Frequency-Inverse Document Frequency,简称 TF-IDF)是一种统计方法,用以评估一个词对于一个文本或一组文本的重要性。词频-逆文档频率(Term Frequency-Inverse Document Frequency,简称 TF-IDF)是一种统计方法,用以评估一个词对于一个文本或一组文本的重要性。 定义 TF-IDF = 词频(...
To design a text-filter experiment, first, the dualistic relevancy of word coexistence frequency should be mined by the word frequency Stat. 设计一个文本过滤实验 ,首先从语料库的词频统计结果中挖掘出词频的二元关联度 ,然后用一个Hop field网络将词频的二元关联关系转化为语境关联关系 ,训练语言单位在整...
inverse frequency noise 反转频率噪声 inverse frequency spectrum 反转频谱 inverse frequency noise 反比例频率噪声 inverse noise 反向噪声 inverse frequency response 【电】 倒频率应答 inverse frequency spectrum 反向频谱 high frequency noise 高频噪声 single frequency noise 单频噪声 spot frequency nois...
the I-D earth is studied first. 了解入IP作用。 I-D地球首先被学习。 [translate] abased on transforming frequency-domain results to the time 基于变换的频率领域结果到时间 [translate] aan independent frequency-domain program using an inverse 一个独立频率领域节目使用反面 [translate] ...
athe third terminal will be the probe ground 第三个终端将是被研的探针[translate] aThe frequency is calculated as the inverse of the time period 频率被计算作为时期的反面[translate]
inverse_frequency_spectrum 翻译 逆频谱 以上结果来自机器翻译。
翻译结果1复制译文编辑译文朗读译文返回顶部 Electromagnetic backscatter coupling, generally applies to long-distance high frequency, microwave radio frequency identification system. 翻译结果2复制译文编辑译文朗读译文返回顶部 正在翻译,请等待... 翻译结果3复制译文编辑译文朗读译文返回顶部 ...
青云英语翻译 请在下面的文本框内输入文字,然后点击开始翻译按钮进行翻译,如果您看不到结果,请重新翻译!A high signal-to-noise ratio is also desired in receive mode. As mentioned above, there are similarities between design methods for low-frequency RF coils and those for gradient coils. Despite ...