Nathalie Japkowicz
3 papers in the PaperMetrix corpus
Papers by this author
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Contextual One-Class Classification in Data Streams
2019 · arXiv (Cornell University)
In machine learning, the one-class classification problem occurs when training instances are only available from one class. It has been observed that making use of this class's structure, or its different contexts, may improve one-class …
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On the combined effect of class imbalance and concept complexity in deep learning
2021 · 2021 IEEE International Conference on Big Data (Big Data)
Structural concept complexity, class overlap, and data scarcity are some of the most important factors influencing the performance of classifiers under class imbalance conditions. When these effects were uncovered in the early 2000s, understandably, the …
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Performance estimation bias in class imbalance with minority subconcepts
2023 · NPARC
Learning classifiers from imbalanced data is known to be a challenging and important problem in machine learning. As a results, the topic has been studied from a wide variety of angles. This includes the choice …