ITPEC FE Subject B April 2026 Question 15

A is {1, 2, 1, 1, 2, 2, 1, 0} and B is {1, 2, 0, 1, 1, 2, 2, 1}.

Count each word of the sequence {He, is, a, an, good, boy, honest, the} in each document, ignoring case.

document-III — "He is a good boy. An honest boy is good."

• •He 1, is 2 (both sentences), a 1, an 1, good 2, boy 2, honest 1, the 0

document-IV — "He is an honest boy. The good boy is honest."

• •He 1, is 2, a 0, an 1, good 1, boy 2, honest 2, the 1

Answer (i)

Why not others: the options split into three groups for each blank, and only one group in each is right.

• •(a), (b) and (c) — give is a count of 1 in document-III, missing its second occurrence in "boy is good"
• •(d), (e) and (f) — give good and boy a count of 1 in document-III, though each appears twice
• •(a), (d) and (g) — give is a count of 1 in document-IV, missing "boy is honest"
• •(b), (e) and (h) — give boy and honest a count of 1 in document-IV, though each appears twice

Key rule: Bag of Words counts every occurrence, not merely presence, and the vector positions follow the shared word sequence — so a word absent from one document contributes a 0 rather than being skipped.

AI-generated — may contain errors