Managing cross-validation splits | AWS Certified AI Practitioner (AIF-C01) original practice question

1.2Standard

There is little data and repeated user records.

Compare models reliably.

Choose two practices.

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

Detailed explanation

CorrectKeep the same user or future rows from leaking across folds

Independence is preserved.

CorrectReport mean and variation and retain a separate final test

Uncertainty is visible.

IncorrectRandomly split records from one user across folds

User patterns leak.

IncorrectTune repeatedly on the final test result

The test becomes contaminated.

An example you can run in a temporary verification environment.

AWS公式AIF-C01 Domain 1.2の交差検証、グループ分割、時系列評価を確認する。

データの関係性を保った分割で、評価結果のばらつきを説明できる。

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDAWS-AIF-433

EnvironmentAWS公式AIF-C01試験ガイドとAWS公式ドキュメントの確認

Last technical review2026-08-20