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Please answer the five multiple choice questions in the attachment below .....
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Question 1
In the “bag of words” representation
Grammar and phrasing are important considerations
No pre-processing of the text is necessary
Stemming and normalization are important
All stop words are typically included
Question 2
Most stop words will have an inverse document frequency (IDF) near one.
True
False
Question 3
All of the following are true about Named Entity Extraction EXCEPT
It may need to be hand-coded using domain knowledge
It may be used to identify relevant phrases in a document such as "Boston Red Sox"
It is based on segmenting text on whitespace and punctuation
It may involve normalization
Question 4
In a Term-Document Matrix
Cell entries can be 0-1 indicators or frequency counts
Each document becomes a feature vector
The data can be analyzed by data mining methods we have already learned about (e.g., classification, cluste
etc.)
All of the above
Question 5
All of the following are true about n-gram sequences EXCEPT
n-grams acknowledge that word order is sometimes important in gathering knowledge from a text docume
n-grams can greatly increase the number of features/variables associated with a document
bi-grams are created for a document by pairing each word with every other word in the document
n-gram phrases may be significant, even if their component words are not
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Five Multiple Questions
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Question 1
In the “bag of words” representation
Grammar and phrasing are important considerations
No pre-processing of the text is necessary
Ste...
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