Which role ensures that data accurately reflects the task for which the model is trained?

• A. Subject matter experts
• B. Data scientists
• C. Data engineers
• D. Product owners

Answer: (A)

Aligning data with the task through domain knowledge is essential. Subject matter experts provide the deep understanding of the real-world problem, define what counts as correct answers, and establish realistic scenarios and labeling standards. Their input ensures the ground-truth labels, categories, and edge cases truly reflect how the task should be performed in practice, so the model learns from data that represents the intended use.

While other roles contribute significantly—data scientists design models and evaluate performance, data engineers build and maintain the data pipelines to deliver clean data at scale, and product owners set goals and priorities—they do not inherently anchor the data to the actual domain and task requirements as SME input does.