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16. A 4-gram model is a ________ order Markov Model.
Constant
Five
Four
Three
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17. Arrange the words "blueberry, cranberry, raspberry, strawberry" in descending order, based on the frequency of their occurrence in the Google Books n-grams. The Google Books n-gram viewer i available at https://books.google.com/ngrams.
raspberry, strawberry, blueberry, cranberry
blueberry, cranberry, raspberry, strawberry
strawberry, raspberry, cranberry, blueberry
None of the above
18. For the string 'mash', identify which of the following set of strings have a Levenshtein distance of 1
smash, mas, lash, mushy, hash
bash, stash, lush, flash, dash
smash, mas, lash, mush, ash
19. Assume that we modify the costs incurred for operations in calculating Levenshtein distance, such that both the insertion and deletion operations incur a cost of 1 each, while substitution incurs a cost of 2. Now, for the string 'lash' which of the following set of strings will have an edit distance of 1?
ash, slash, clash, flush
flash, stash, lush, blush
slash, last, bash, ash
20. Given a corpus C2, the Maximum Likelihood Estimation (MLE) for the bigram "dried berries" is 0.3 and the count of occurrence of the word "dried" is 580 for the same corpus C2, the likelihood of "dried berries" after applying add-one smoothing is 0.04. What is the vocabulary size of C2?
3585
3795
4955
3995
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