Natural Language Processing with Python

Exercises

1. ○ Try using the Python interpreter as a calculator, and typing expressions like 12 / (4 + 1).

2. ○ Given an alphabet of 26 letters, there are 26 to the power 10, or 26 ** 10, 10-letter strings we can form. That works out to 141167095653376L (the L at the end just indicates that this is Python’s long-number format). How many hundred-letter strings are possible?

3. ○ The Python multiplication operation can be applied to lists. What happens when you type ['Monty', 'Python'] * 20, or 3 * sent1?

4. ○ Review Computing with Language: Texts and Words on computing with language. How many words are there in text2? How many distinct words are there?

5. ○ Compare the lexical diversity scores for humor and romance fiction in Table 1-1. Which genre is more lexically diverse?

6. ○ Produce a dispersion plot of the four main protagonists in Sense and Sensibility: Elinor, Marianne, Edward, and Willoughby. What can you observe about the different roles played by the males and females in this novel? Can you identify the couples?

7. ○ Find the collocations in text5.

8. ○ Consider the following Python expression: len(set(text4)). State the purpose of this expression. Describe the two steps involved in performing this computation.

9. ○ Review A Closer Look at Python: Texts as Lists of Words on lists and strings.

   1. Define a string and assign it to a variable, e.g., my_string = 'My String' (but put something more interesting in the string). Print the contents of this variable in two ways, first by simply typing the variable name ...