- A
Use BLEU scores only
Why wrong: BLEU is more suited for translation and code, not summarization.
- B
Use ROUGE scores only
Why wrong: ROUGE alone may not capture semantic quality or coherence.
- C
Use both ROUGE scores and human evaluation on a subset
Combining automated and human evaluation provides a balanced, reliable comparison.
- D
Use human evaluation only
Why wrong: Human evaluation is reliable but expensive and not scalable for many samples.
Question 460 of 1,000
mediumMultiple ChoiceObjective-mapped
AIF-C01 Practice Question: A data scientist needs to compare the performance…
This AIF-C01 practice question tests your understanding of aif-c01 exam topics. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A data scientist needs to compare the performance of two foundation models on a text summarization task. They have reference summaries for 1000 text samples. Which evaluation approach would provide the MOST reliable comparison?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use both ROUGE scores and human evaluation on a subset
Option C is correct because relying solely on automated metrics like BLEU or ROUGE can be misleading for text summarization, as they measure n-gram overlap but not semantic quality or factual consistency. Combining ROUGE scores (for lexical overlap) with human evaluation on a subset provides a more reliable comparison by capturing both quantitative similarity and qualitative aspects like coherence and faithfulness.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use BLEU scores only
Why it's wrong here
BLEU is more suited for translation and code, not summarization.
- ✗
Use ROUGE scores only
Why it's wrong here
ROUGE alone may not capture semantic quality or coherence.
- ✓
Use both ROUGE scores and human evaluation on a subset
Why this is correct
Combining automated and human evaluation provides a balanced, reliable comparison.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use human evaluation only
Why it's wrong here
Human evaluation is reliable but expensive and not scalable for many samples.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common misconception is that automated metrics like BLEU or ROUGE are sufficient for evaluating generative tasks, when in reality they lack semantic understanding and must be supplemented with human judgment for reliable comparison.
Detailed technical explanation
How to think about this question
ROUGE (Recall-Oriented Understudy for Gisting Evaluation) computes n-gram overlap, longest common subsequence, and skip-bigram co-occurrence between candidate and reference summaries, but it does not detect hallucinations or factual errors—a common failure mode where a summary repeats reference n-grams but distorts meaning. In practice, combining ROUGE with human evaluation (e.g., Likert-scale ratings for relevance and consistency) addresses this gap, as seen in benchmarks like the CNN/DailyMail dataset where automated metrics alone correlate poorly with human preference.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this AIF-C01 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Use both ROUGE scores and human evaluation on a subset — Option C is correct because relying solely on automated metrics like BLEU or ROUGE can be misleading for text summarization, as they measure n-gram overlap but not semantic quality or factual consistency. Combining ROUGE scores (for lexical overlap) with human evaluation on a subset provides a more reliable comparison by capturing both quantitative similarity and qualitative aspects like coherence and faithfulness.
What should I do if I get this AIF-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This AIF-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AIF-C01 exam.
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