[Solved] You have a list of reviews with aspects and sentiments:reviews = [ {"aspect": "battery", "sentiment": "positive"}, {"aspect": "screen", "sentiment": "negative"}, {"aspect": "battery", "sentiment":... | NLP

NLP - Sentiment Analysis Advanced

You have a list of reviews with aspects and sentiments:

reviews = [
  {"aspect": "battery", "sentiment": "positive"},
  {"aspect": "screen", "sentiment": "negative"},
  {"aspect": "battery", "sentiment": "neutral"}
]

How would you create a dictionary that keeps the last sentiment for each aspect?

AUse a set to store unique sentiments only

BUse a list to store all sentiments without keys

CUse a loop to assign each aspect's sentiment, overwriting previous

DUse a tuple to store aspect and sentiment pairs

Step-by-Step Solution

Solution:

Step 1: Understand the goal to keep last sentiment per aspect
Assigning each aspect's sentiment in a dictionary overwrites previous values, keeping the last.
Step 2: Evaluate options for data structure use
Looping and assigning to a dictionary key is the correct way. Lists, sets, or tuples do not overwrite by key.
Final Answer:
Use a loop to assign each aspect's sentiment, overwriting previous -> Option C
Quick Check:
Dictionary assignment overwrites previous values [OK]

Quick Trick: Dictionary keys overwrite values on repeated assignment [OK]

Common Mistakes:

MISTAKES

Using list or set which don't map keys to values
Expecting sets to keep order or overwrite
Using tuples which are immutable and unordered

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More NLP Quizzes

You have a list of reviews with aspects and sentiments:

Step 1: Understand the goal to keep last sentiment per aspect

Step 2: Evaluate options for data structure use

Final Answer:

Quick Check:

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