arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2407.07045cs.AI
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面向知识图谱的简单可解释概率分类器

Simple and Interpretable Probabilistic Classifiers for Knowledge Graphs

Università degli Studi di Bari Aldo Moro(巴里·阿尔多·莫罗大学);Fincons Group(芬康斯集团);CILA;LACAM

Christian Riefolo, Nicola Fanizzi, Claudia d'Amato

AI总结:

针对知识图谱场景下从不完整数据学习概率分类器的难题,提出基于简单信念网络的归纳方法,含朴素贝叶斯及双层扩展模型,可转译为概率规则提升可解释性,还可利用专家知识初始化,经多本体随机分类任务验证有效。

摘要:

针对以描述逻辑表示的知识图谱场景下从不完整数据中学习概率分类器的问题,本文提出一种基于学习简单信念网络的归纳方法。具体而言,我们研究了一种基础概率模型——基于多元伯努利分布的朴素贝叶斯(Naive Bayes)分类器,以及其扩展的双层网络模型:该分类模型连接至由伯努利混合模型构成的下层网络。我们展示了如何将此类模型转换为(概率)公理(或规则),从而提升可解释性,此外还可利用专家知识对模型进行初始化。本文呈现并讨论了实证评估的结果,该评估旨在测试模型在多个涉及不同本体的随机分类问题上的有效性。

英文摘要:

Tackling the problem of learning probabilistic classifiers from incomplete data in the context of Knowledge Graphs expressed in Description Logics, we describe an inductive approach based on learning simple belief networks. Specifically, we consider a basic probabilistic model, a Naive Bayes classifier, based on multivariate Bernoullis and its extension to a two-tier network in which this classification model is connected to a lower layer consisting of a mixture of Bernoullis. We show how such models can be converted into (probabilistic) axioms (or rules) thus ensuring more interpretability. Moreover they may be also initialized exploiting expert knowledge. We present and discuss the outcomes of an empirical evaluation which aimed at testing the effectiveness of the models on a number of random classification problems with different ontologies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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