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- W2291236900 abstract "In common binary classification scenarios, the presence of both positive and negative examples in training data is needed to build an efficient classifier. Unfortunately, in many domains, this requirement is not satisfied and only one class of examples is available. To cope with this setting, classification algorithms have been introduced that learn from Positive and Unlabeled (PU) data. Originally, these approaches were exploited in the context of document classification. Only few works address the PU problem for categorical dataset. Nevertheless, the available algorithms are mainly based on Naive Bayes classifiers. In this work we present a new distance based PU learning approach for categorical data: Pulce. Our framework takes advantage of the intrinsic relationships between attribute values and exceeds the independence assumption made by Naive Bayes. Pulce, in fact, leverages on the statistical properties of the data to learn a distance metric employed during the classification task. We extensively validate our approach over real world datasets and demonstrate that our strategy obtains statistically significant improvements w.r.t. state-of-the-art competitors." @default.
- W2291236900 created "2016-06-24" @default.
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- W2291236900 date "2014-01-01" @default.
- W2291236900 modified "2023-09-27" @default.
- W2291236900 title "Learning from Categorical Attribute Relationships for Positive-Unlabeled Classification" @default.
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