Natural Language Processing Week 8 NPTEL Assignment Answers 2025

NPTEL Natural Language Processing Week 8 Assignment Answers 2024

1. Consider the following sentences:

After a hectic day, she found peace in finishing the last piece of her puzzle.
He used a bat to hit the ball out of the park, then later that evening, he saw a bat flying in the night sky.

The lexical relation between the highlighted words in sentences 1, 2 are:

• a. Homograph, Synonym
• b. Homonymy, Homophones
• c. Synonym, Hyponym
• d. Homophones, Homonymy

Answer: d
Explanation:
“Piece” and “peace” sound the same but have different meanings and spellings → Homophones.
“Bat” and “bat” are spelled the same but have different meanings → Homonymy.

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2. Consider the following sentences. Which of the following is/are False?

• a. Fruit is a hypernym of mango.
• b. Animal is hyponym of cat.
• c. Homographs are the words with the same pronunciation but different spelling
• d. Bank (financial organization) vs Bank (riverside) is an example of homonym

Answer: b, c
Explanation:

• b is false because cat is a hyponym of animal, not the reverse.
• c is false because homographs have the same spelling, not different spelling.

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3. Which of the following is /are True?

• a. Synonymy is a binary relation
• b. Thesaurus-based algorithms are based on whether words are nearby in Wordnet
• c. Synset is a set of antonyms representing sense
• d. Troponym is from a verb to a specific manner elaboration of that verb

Answer: a, b, d
Explanation:

• a is true because synonymy involves pairs of words.
• b is true; WordNet and thesaurus-based approaches work on proximity of words.
• c is false; Synset is a set of synonyms, not antonyms.
• d is true.

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4. What is the Lin similarity between house and decoration?

• a. 0.564
• b. 0.433
• c. 0.501
• d. 0.473

Answer: c
Explanation:
Lin similarity is a semantic similarity measure. Based on the data (as used in course), the correct score is 0.501.

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5. What is the Resnik similarity between building and door?

• a. 11.09
• b. 8.30
• c. 9.23
• d. 4.70

Answer: b
Explanation:
The Resnik similarity considers the information content of the lowest common ancestor. From the dataset, the correct score is 8.30.

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6. What is the Leacock-Chodorow similarity between house and design?

• a. 0.694
• b. 0.398
• c. 0.097
• d. None of the above

Answer: d
Explanation:
None of the values match the actual Leacock-Chodorow similarity based on the path length in taxonomy between “house” and “design”.

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7. Compute the scores for:

(i) the hub “colors” and the component “white”
(ii) the hub “colors” and the component “fixtures”

• a. 0.2, 0.25
• b. 1.0, 0.0
• c. 0.5, 0.25
• d. None of the above

Answer: d
Explanation:
Actual values are not matching any of the listed choices. Based on course data or calculations, correct scores do not correspond to options provided.

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8. Which of the following is/are false?

• a. Hyponym is also called superordinate
• b. Hypernym is also called subordinate
• c. Snore → Sleep is an example of entails
• d. Meal → lunch is an example of hyponym

Answer: a, b
Explanation:

• a is false: Hyponym is the more specific term, not superordinate.
• b is false: Hypernym is the general term, hence superordinate, not subordinate.
• c is true: “Snore” entails “sleep”.
• d is true: “Lunch” is a kind of “meal”, so hyponym.