Annotation biases and mitigation strategies
Annotation biases are systematic errors or prejudices that can creep into labeled datasets during the annotation process. These biases can significantly impact the performance and fairness of machine learning models trained on this data, leading to models that are inaccurate or exhibit discriminatory behavior. Recognizing and mitigating these biases is crucial for building robust and ethical AI systems.
Types of annotation bias include the following:
- Selection bias: This occurs when the data selected for annotation is not representative of the true distribution of data the model will encounter in the real world. For instance, if a dataset for facial recognition primarily contains images of people with lighter skin tones, the model trained on it will likely perform poorly on people with darker skin tones.
- Labeling bias: This arises from the subjective interpretations, cultural backgrounds, or personal beliefs of the annotators...