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Martin Mihelich

3 accepted papers

2024

Interplay of ROC and Precision-Recall AUCs: Theoretical Limits and Practical Implications in Binary Classification

ICML 2024poster

In this paper, we present two key theorems that should have significant implications for machine learning practitioners working with binary classification models. The first theorem provides a formula to calculate the maximum and minimum Precision-Recall AUC ($AUC_{PR}$) for a fixed Receiver Operatin…

Cited by 0SourcePDFScholar
2022

A Simple Log-based Loss Function for Ordinal Text Classification

COLING 2022main

The cross-entropy loss function is widely used and generally considered the default loss function for text classification. When it comes to ordinal text classification where there is an ordinal relationship between labels, the cross-entropy is not optimal as it does not incorporate the ordinal chara…

2020

A Characterization of Mean Squared Error for Estimator with Bagging

AISTATS 2020poster

Bagging can significantly improve the generalization performance of unstable machine learning algorithms such as trees or neural networks. Though bagging is now widely used in practice and many empirical studies have explored its behavior, we still know little about the theoretical properties of bag…