AWS Certified AI Practitioner (AIF-C01) — Question 240

A healthcare company wants to create a model to improve disease diagnostics by analyzing patient voices. The company has recorded hundreds of patient voices for this project.

The company is currently filtering voice recordings according to duration and language.

Which phase of the ML lifecycle describes the current project phase?

Answer options

• A. Data collection
• B. Data preprocessing
• C. Feature engineering
• D. Model training

Correct answer: B

Explanation

The correct answer is B, Data preprocessing, as the company is currently filtering the voice recordings, which is a step in preparing the data for analysis. The other options are incorrect because data collection refers to gathering raw data, feature engineering involves selecting and transforming variables, and model training is the phase where the model learns from the prepared data.