A fraud model includes a column containing the future outcome.
Validation is suspiciously high.
Choose two responses.
Use only information available at prediction time, split by time, and fit preprocessing on training data before applying it to validation.
Detailed explanation
Future information is not available during training.
Future information is not available during training.
Validation information is less likely to leak into training.
Validation information is less likely to leak into training.
Future or validation statistics can enter training.
Future or validation statistics can enter training.
The score may depend on impossible future information.
The score may depend on impossible future information.
Try it yourself
An example you can run in a temporary verification environment.
AWS公式AIF-C01 Domain 1.2のデータ品質、リーケージ、訓練・検証分割を確認する。Expected result
未来情報と検証情報が訓練へ漏れる経路を説明し、時系列で防止できる。Key points
- Future information
- Time split
- Fit preprocessing
Notes
- Environment: AWS公式AIF-C01試験ガイドとAWS公式ドキュメントの確認
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.