Data Feedback Loops: Model-driven Amplification of Dataset Biases

Datasets scraped from the internet have been critical to the successes of large-scale machine learning. Yet, this very success puts the utility of future internet-derived datasets at potential risk, as model outputs begin to replace human annotations as a source of supervision. In this work, we firs...

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Bibliographic Details
Published in:arXiv.org 2022-09
Main Authors: Taori, Rohan, Hashimoto, Tatsunori B
Format: Article
Language:English
Subjects:
Amplification
Annotations
Bias
Calibration
Datasets
Feedback loops
Human bias
Image classification
Internet
Machine learning
Stability analysis
Testing time
Training
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Summary:Datasets scraped from the internet have been critical to the successes of large-scale machine learning. Yet, this very success puts the utility of future internet-derived datasets at potential risk, as model outputs begin to replace human annotations as a source of supervision. In this work, we first formalize a system where interactions with one model are recorded as history and scraped as training data in the future. We then analyze its stability over time by tracking changes to a test-time bias statistic (e.g. gender bias of model predictions). We find that the degree of bias amplification is closely linked to whether the model's outputs behave like samples from the training distribution, a behavior which we characterize and define as consistent calibration. Experiments in three conditional prediction scenarios - image classification, visual role-labeling, and language generation - demonstrate that models that exhibit a sampling-like behavior are more calibrated and thus more stable. Based on this insight, we propose an intervention to help calibrate and stabilize unstable feedback systems. Code is available at https://github.com/rtaori/data_feedback.
ISSN:2331-8422