Author:

Keywords:

classification, weakly supervised learning, PU learning, Science & Technology, Technology, Computer Science, Artificial Intelligence, Computer Science, Classification, Weakly supervised learning, ONE-CLASS CLASSIFICATION, TEXT CATEGORIZATION, DECISION TREE, C14/17/070#54271146, G0D8819N#54969420, 0801 Artificial Intelligence and Image Processing, 0806 Information Systems, 1702 Cognitive Sciences, Artificial Intelligence & Image Processing, 4611 Machine learning

Abstract:

Learning from positive and unlabeled data or PU learning is the setting where a learner only has access to positive examples and unlabeled data. The assumption is that the unlabeled data can contain both positive and negative examples. This setting has attracted increasing interest within the machine learning literature as this type of data naturally arises in applications such as medical diagnosis and knowledge base completion. This article provides a survey of the current state of the art in PU learning. It proposes seven key research questions that commonly arise in this field and provides a broad overview of how the field has tried to address them.