tf–idf

In information retrieval, tf–idf, short for term frequency–inverse document frequency, is a numerical statistic that is intended to reflect how important a word is to a document in a collection or corpus. It is often used as a weighting factor in information retrieval and text mining. The tf-idf value increases proportionally to the number of times a word appears in the document, but is offset by the frequency of the word in the corpus, which helps to adjust for the fact that some words appear more frequently in general.

单词	Term frequency
释义	Term frequency 原声例句可汗学院Khan Academy Middle school physics - NGSS初中物理 You might hear the term frequency of a wave. 您可能听说过波的频率这个术语。英语百科 tf–idf In information retrieval, tf–idf, short for term frequency–inverse document frequency, is a numerical statistic that is intended to reflect how important a word is to a document in a collection or corpus. It is often used as a weighting factor in information retrieval and text mining. The tf-idf value increases proportionally to the number of times a word appears in the document, but is offset by the frequency of the word in the corpus, which helps to adjust for the fact that some words appear more frequently in general.
随便看	normal dwarf的意思 normal dwarves的意思 normal dynamic height的意思 normal的意思 normal ear的意思 normal earning的意思 normal earnings的意思 normal earth的意思 normal earth fixed axis system的意思 normal earthquake的意思 Normal ECG的意思 normal echo的意思 normal economics的意思 normal edema的意思 normal edition的意思 normal education的意思 normal effect的意思 normal effective head的意思 normal effect of flooding的意思 normal effort的意思 normal eigenvalue problem的意思 Normal ejaculation的意思 Normal EKG finding的意思 normal elastic modulus的意思 normal e layer的意思

Term frequency

tf–idf