NO.PZ202304050200007702
问题如下：
Which of Bector’s statements regarding TF, IDF, and
TF–IDF is correct?
选项：
A.
Statement 1
B.
Statement 2
C.
Statement 3
解释：
C is correct.
Statement 3 is correct. TF–IDF values vary by the number of documents in the
dataset, and therefore, the model performance can vary when applied to a
dataset with just a few documents.
Statement 1 is
incorrect because IDF is calculated as the log of the inverse, or reciprocal,
of the document frequency measure. Statement 2 is incorrect because TF at the
sentence (not collection) level is multiplied by IDF to calcu-late TF–IDF.
A is incorrect
because Statement 1 is incorrect. IDF is calculated as the log of the inverse,
or reciprocal, of the document frequency (DF) measure.
B is incorrect because Statement 2 is incorrect. TF at
the sentence (not collec-tion) level is multiplied by IDF to calculate TF–IDF.
可以解释一下statement3么，TFIDF不是指的是词在句中的关系和含词句在文章中的关系么？和dataset包含多少篇文章有什么关联？
