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arXiv 1806.02421cs.LGcs.AIstat.ML
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基于关系数据的人工辅助多实体贝叶斯网络学习

Human-aided Multi-Entity Bayesian Networks Learning from Relational Data

George Mason University(乔治梅森大学)

Cheol Young Park, Kathryn Blackmond Laskey

摘要:

人工智能(AI)系统是一个自治系统,它模仿人类的精神和身体活动,如观察,定向,决策和行动,称为OODA过程。执行OODA过程的AI系统需要语义丰富的表示来处理复杂的现实世界情况,并能够在不确定的情况下进行推理。多实体贝叶斯网络(MEBN)将一阶逻辑与贝叶斯网络相结合,用于表示和推理复杂,知识丰富的领域中的不确定性。MEBN超越了标准的贝叶斯网络,能够对未知数量的实体进行推理,这些实体在各种类型的关系中相互作用,这是人工智能系统OODA过程的关键要求。迄今为止,MEBN模型是由领域专家手动构建的。然而,手动MEBN建模是劳动密集型的,不够敏捷。为了解决这些问题,MEBN建模需要一种有效的方法。方法之一是使用机器学习从数据中整体或部分地学习MEBN模型。在大数据时代,以不确定性和复杂性为特征的数据丰富的环境已经变得无处不在。数据样本越大,机器学习方法的结果就越准确。因此,机器学习有潜力提高MEBN模型的质量以及MEBN建模的有效性。在本研究中,我们研究了一个MEBN学习框架,从领域专家的知识和数据相结合,开发一个MEBN模型。为了评估MEBN学习框架,我们进行了一个实验,比较MEBN学习框架和现有的手动MEBN建模的开发效率。

英文摘要:

An Artificial Intelligence (AI) system is an autonomous system which emulates human mental and physical activities such as Observe, Orient, Decide, and Act, called the OODA process. An AI system performing the OODA process requires a semantically rich representation to handle a complex real world situation and ability to reason under uncertainty about the situation. Multi-Entity Bayesian Networks (MEBNs) combines First-Order Logic with Bayesian Networks for representing and reasoning about uncertainty in complex, knowledge-rich domains. MEBN goes beyond standard Bayesian networks to enable reasoning about an unknown number of entities interacting with each other in various types of relationships, a key requirement for the OODA process of an AI system. MEBN models have heretofore been constructed manually by a domain expert. However, manual MEBN modeling is labor-intensive and insufficiently agile. To address these problems, an efficient method is needed for MEBN modeling. One of the methods is to use machine learning to learn a MEBN model in whole or in part from data. In the era of Big Data, data-rich environments, characterized by uncertainty and complexity, have become ubiquitous. The larger the data sample is, the more accurate the results of the machine learning approach can be. Therefore, machine learning has potential to improve the quality of MEBN models as well as the effectiveness for MEBN modeling. In this research, we study a MEBN learning framework to develop a MEBN model from a combination of domain expert's knowledge and data. To evaluate the MEBN learning framework, we conduct an experiment to compare the MEBN learning framework and the existing manual MEBN modeling in terms of development efficiency.

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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