Assignment 3, Part I: Ngrams.

1. In your own words, what are the purposes of each of these flags?
      In ngram-count
         a. -text
         b. -order
         c. -wbdiscount
         d. -lm
      
      In ngram
         a. -lm
         b. -order
         c. -ppl


2. What is the perplexity of your bigram model against 'hislastbow.txt'?


3. Against 'lostworld.txt'?


4. Against 'otherauthors.txt'?


5. Why do you think the files with the higher perplexity got the higher perplexity?


6. Show the perplexity figures for
      trigram against hislastbow.txt:
      trigram against lostworld.txt:
      trigram against otherauthors.txt:
      4gram against histlastbow.txt:
      4gram against lostworld.txt:
      4gram against otherauthors.txt:

7. Which combination gives the lowest perplexity?
      N-gram order:
      discounting:
      test file: