Structure of Programming Languages

Answer the following questions

1)

a) Define NER and what it is useful for:

b) Give 3 examples of boundary issues in NER

c) Run NLTK’s NER model on the following sentence: “Trump is going to Paris on France’s express train with John Kelly”

i) Show your code here:

ii) Calculate the accuracy of the model on this sentence

2)

a) What is the difference between polarity sentiment analysis and categorical sentiment analysis? Give examples

b) Give 3 sentences that would be hard to get correct sentiment for. Each one should show a different language issue.

i)

ii)

iii)

c) Code in python and report the polarity sentiment for the following sentence: “This is the best exam in the world!”

i) Show your code here:

 

ii) Report the score:

 

3)

a) What are 3 key features of an imperative language?

i)

ii)

iii)

b) How does a functional language differ from imperative ?

4)

a) Explain a Zipf curve and what it detects.

b) Does a Zipf curve look the same in all languages? What would cause a Zipf curve to be abnormal looking?

b) Draw a Zipf Curve. Label the X and Y axis and show example values

 

 

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