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Home / Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence / EAAI-20

How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?

February 1, 2023

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Authors

Jacob Whitehill

Worcester Polytechnic Institute


DOI:

10.1609/aaai.v33i01.33015425


Abstract:

Recent work on privacy-preserving machine learning has considered how datamining competitions such as Kaggle could potentially be “hacked”, either intentionally or inadvertently, by using information from an oracle that reports a classifier’s accuracy on the test set (Blum and Hardt 2015; Hardt and Ullman 2014; Zheng 2015; Whitehill 2016). For binary classification tasks in particular, one of the most common accuracy metrics is the Area Under the ROC Curve (AUC), and in this paper we explore the mathematical structure of how the AUC is computed from an n-vector of real-valued “guesses” with respect to the ground-truth labels. Under the assumption of perfect knowledge of the test set AUC c=p/q, we show how knowing c constrains the set W of possible ground-truth labelings, and we derive an algorithm both to compute the exact number of such labelings and to enumerate efficiently over them. We also provide empirical evidence that, surprisingly, the number of compatible labelings can actually decrease as n grows, until a test set-dependent threshold is reached. Finally, we show how W can be efficiently whittled down, through pairs of oracle queries, to infer all the groundtruth test labels with complete certainty.

Topics: AAAI

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HOW TO CITE:

Jacob Whitehill How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings? Proceedings of the AAAI Conference on Artificial Intelligence (2019) 5425-5432.

Jacob Whitehill How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings? AAAI 2019, 5425-5432.

Jacob Whitehill (2019). How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?. Proceedings of the AAAI Conference on Artificial Intelligence, 5425-5432.

Jacob Whitehill. How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?. Proceedings of the AAAI Conference on Artificial Intelligence 2019 p.5425-5432.

Jacob Whitehill. 2019. How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?. "Proceedings of the AAAI Conference on Artificial Intelligence". 5425-5432.

Jacob Whitehill. (2019) "How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?", Proceedings of the AAAI Conference on Artificial Intelligence, p.5425-5432

Jacob Whitehill, "How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?", AAAI, p.5425-5432, 2019.

Jacob Whitehill. "How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?". Proceedings of the AAAI Conference on Artificial Intelligence, 2019, p.5425-5432.

Jacob Whitehill. "How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?". Proceedings of the AAAI Conference on Artificial Intelligence, (2019): 5425-5432.

Jacob Whitehill. How Does Knowledge of the AUC Constrain the Set of Possible Ground-Truth Labelings?. AAAI[Internet]. 2019[cited 2023]; 5425-5432.


ISSN: 2374-3468


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