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Iteratively Learning Embeddings and Rules for Knowledge Graph Reasoning.pdf
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上传时间: 2019-08-09
详细说明： Reasoning is essential for the development of large knowledge graphs,especiallyforcompletion,whichaimstoinfernewtriples basedonexistingones.Bothrulesandembeddingscanbeusedfor knowledgegraphreasoningandtheyhavetheirownadvantages anddifficulties.Rule-basedreasoningisaccurateandexplainable butrulelearningwithsearchingoverthegraphalways suffersfrom efficiencyduetohugesearchspace.Embedding-basedreasoningis morescalableandefficientasthereasoningisconductedviacomputationbetweenembeddings,butithasdifficultylearninggood representationsforsparseentitiesbecauseagoodembeddingrelies heavilyondatarichness.Basedonthisobservation,inthispaper we explore how embedding and rule learning can be combined together and complement each other’s difficulties with their advantages.WeproposeanovelframeworkIterEiterativelylearning embeddingsandrules,inwhichrulesarelearnedfromembeddings with proper pruning strategy and embeddings are learned from existingtriplesandnewtriplesinferredbyrules.Evaluationson embeddingqualitiesofIterEshowthatruleshelpimprovethequality of sparse entity embeddings and their link prediction results. Wealsoevaluatetheefficiencyofrulelearningandqualityofrules fromIterEcomparedwithAMIE+,showingthatIterEiscapableof generatinghighqualityrulesmoreefficiently.
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