Lexicon-based approaches (VADER) in NLP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the VADER sentiment analyzer from NLTK.

NLP

from nltk.sentiment.vader import [1]

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ASentimentIntensityAnalyzer

BSentimentAnalyzer

CVaderAnalyzer

DSentimentScore

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect class names like SentimentAnalyzer or VaderAnalyzer.

The correct class to import for VADER sentiment analysis is SentimentIntensityAnalyzer.

2fill in blank

medium

Complete the code to create an instance of the VADER sentiment analyzer.

NLP

analyzer = [1]()

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AVaderSentiment

BSentimentIntensityAnalyzer

CSentimentAnalyzer

DVaderAnalyzer

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to instantiate classes that don't exist like VaderSentiment.

You create an instance by calling SentimentIntensityAnalyzer().

3fill in blank

hard

Fix the error in the code to get the sentiment scores for the text.

NLP

scores = analyzer.[1]('I love learning AI!')

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Apolarity_scores

Bscore

Csentiment_score

Dget_scores

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-existent methods like score or get_scores.

The method to get sentiment scores is polarity_scores.

4fill in blank

hard

Complete the code to extract the compound score from the sentiment scores dictionary.

NLP

compound_score = scores['[1]']

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A[

B]

Ccompound

Dscore

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of brackets or wrong keys like 'score'.

To get the compound score, use scores['compound'].

5fill in blank

hard

Complete the code to create a dictionary comprehension that maps sentences to their compound sentiment scores.

NLP

sentence_scores = {sentence: analyzer.[1](sentence)['compound'] for sentence in sentences}

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A:

Bpolarity_scores

C[

D]

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong separators or missing brackets for dictionary access.

The dictionary comprehension uses sentence: analyzer.polarity_scores(sentence)['compound'] for each sentence.