A vast amount of the world's data and knowledge is relational in nature. By designing machine learning methods that consume such symbolic, relational knowledge or interact with formal reasoning methods, it becomes possible to discover new knowledge, to detect mistakes in existing knowledge, and to develop alternative forms of inference.
In the other direction, the use of prior knowledge can improve machine learning methods by reducing the need for huge amounts of data and computing resources, and by making machine learning models more generalisable and interpretable. We study how symbolic methods can be used to represent such prior knowledge, and how formal reasoning can be combined with learning to achieve the best of both worlds.
We apply our results in a variety of different domains, with a particular emphasis on medicine and scientific discovery.
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