Feature selection bias occurs when the process of selecting which features or variables to include in a model skews the results, leading to incorrect conclusions about the data. This bias can arise when certain features are favored based on their availability or perceived importance, ignoring others that may be equally or more relevant. The implications of feature selection bias can significantly impact the fairness and accuracy of AI systems, as it may lead to discriminatory outcomes if particular groups are underrepresented or misrepresented in the model's training data.
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