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• W3174667088 abstract "Approaches based on refinement operators have been successfully applied to class expression learning on RDF knowledge graphs. These approaches often need to explore a large number of concepts to find adequate hypotheses. This need arguably stems from current approaches relying on myopic heuristic functions to guide their search through an infinite concept space. In turn, deep reinforcement learning provides effective means to address myopia by estimating how much discounted cumulated future reward states promise. In this work, we leverage deep reinforcement learning to accelerate the learning of concepts in $mathcal{ALC}$ by proposing DRILL -- a novel class expression learning approach that uses a convolutional deep Q-learning model to steer its search. By virtue of its architecture, DRILL is able to compute the expected discounted cumulated future reward of more than $10^3$ class expressions in a second on standard hardware. We evaluate DRILL on four benchmark datasets against state-of-the-art approaches. Our results suggest that DRILL converges to goal states at least 2.7$times$ faster than state-of-the-art models on all benchmark datasets. We provide an open-source implementation of our approach, including training and evaluation scripts as well as pre-trained models." @default.
• W3174667088 created "2021-07-05" @default.
• W3174667088 creator A5038745720 @default.
• W3174667088 creator A5070510377 @default.
• W3174667088 date "2021-06-29" @default.
• W3174667088 modified "2023-09-27" @default.
• W3174667088 title "DRILL-- Deep Reinforcement Learning for Refinement Operators in $mathcal{ALC}$" @default.
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• W3174667088 hasPublicationYear "2021" @default.
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