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arXiv · 2306.15777

"Is a picture of a bird a bird": Policy recommendations for dealing with ambiguity in machine vision models

Alicia Parrish·Sarah Laszlo·Lora Aroyo
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Abstract

Many questions that we ask about the world do not have a single clear answer, yet typical human annotation set-ups in machine learning assume there must be a single ground truth label for all examples in every task. The divergence between reality and practice is stark, especially in cases with inherent ambiguity and where the range of different subjective judgments is wide. Here, we examine the implications of subjective human judgments in the behavioral task of labeling images used to train machine vision models. We identify three primary sources of ambiguity arising from (i) depictions of labels in the images, (ii) raters' backgrounds, and (iii) the task definition. On the basis of the empirical results, we suggest best practices for handling label ambiguity in machine learning datasets.

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Alicia Parrish, Sarah Laszlo, Lora Aroyo. 2023-06-27. "Is a picture of a bird a bird": Policy recommendations for dealing with ambiguity in machine vision models. https://arxiv.org/abs/2306.15777

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