12.What is the formula for calculating TF-IDF score?  A. (Number of times X appears in a document) / (Total number of terms in the document) * log(Total number of documents / Number of documents containing X)  B. (Total number of documents / Number of documents containing X) * log(Number of times X appears in a document) / (Total number of terms in the document)  C. (Number of times X appears in a document) * log(Total number of documents / Number of documents containing X) / (Total number of terms in the document)  D. (Total number of terms in the document) * log(Total number of documents / Number of documents containing X) / (Number of times X appears in a document)

What is the formula for IDF?Answer choicesSelect only one optionREVISITLog(Total number of documents - Number of documents containing X)Log(Total number of documents + Number of documents containing X)Log(Total number of documents / Number of documents containing X)Log(Total number of documents * Number of documents containing X)

Consider a term that appears 15 times in a document of 500 words. In a collection of 1000 documents, this term appears in 200 documents. What is the TF-IDF score for this term?Answer choicesSelect only one optionREVISIT0.10.02090.20.209

15.What is the TF-IDF score of a term that appears 10 times in a document of 100 words, and appears in 20 out of a total of 100 documents?  A. 0.5  B. 1  C. 1.5  D. 2

Question 201 MarkREVISITIn a document collection consisting of 500 documents, a term appears 50 times in a specific document that contains 1000 words. If this term appears in 100 out of the total 500 documents, what is its TF-IDF score?Answer choicesSelect only one option0.20.3490.03490.319

If the term frequency (TF) of a word in a document is 0.1 and the inverse document frequency (IDF) of the word is 1.609, what is the TF-IDF weighted value of the word in the document?Question 3Answera.0.1609b.0.162c.0.161d.0.160