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  • 06-2cHave you reviewed whether features were removed excessively during data pre-processing?
    • Feature selection can mitigate potential biases and enhance the performance of the AI model, but extreme feature selection can cause overfitting or even lead to bias.

    • If you have selected features in all data, the same features are used in cross validation, which may lead to bias. Therefore, an assessment is necessary to prevent extreme feature selection and exclusion.

    • Also, in the healthcare sector, intentionally biased features, including race, gender, and age, can be used as the class of datasets to diagnose certain diseases accordingly to AI’s objectives. If you need to remove concentrated or biased data under these circumstances, you must distinguish objectives and potential biases through a review by medical staff with medical knowledge. Exercise caution not to remove features excessively or assign weights for each feature since extreme pre-processing can lower the model’s performance or generate results not appropriate to the model’s objectives.