# Q5 (3 marks)

Subject: Natural Language Processing

Exam: M2

Reader: https://deep-learning-study-room.vercel.app/nlp/#m2/mocks/mock-b/q5

Canonical: https://deep-learning-study-room.vercel.app/read/nlp/m2/mocks/mock-b--q5/

M2 · confirmed 2 + 2 + any two of 3 + 3 + 3 · worked practice

### Q5

Apply simplified Lesk to “bank” with preprocessed context {river, water, flooded}. Gloss R is {sloping, land, river, water}; gloss F is {financial, institution, money, loan}. (3 marks)

**Given**

Two already preprocessed gloss sets and one context set.

**To find**

Overlap scores and selected sense.

### Formula and why it applies



$$
\text{score}(s)=|\text{context}\cap\text{gloss}(s)|
$$



Simplified Lesk chooses the sense whose gloss shares the largest number of context words, using the specified set-overlap convention.

### Solution

#### Step 1. Intersect the river gloss

{river, water, flooded} ∩ {sloping, land, river, water} = {river, water}.

#### Step 2. Count the river overlap



$$
score(R)=2
$$



#### Step 3. Intersect and count the financial gloss

No shared words; intersection is empty, so score(F)=0.

#### Step 4. Compare

2 > 0, hence select the river-bank sense.

River-bank sense, with overlap 2 versus 0.