哪一项陈述最准确地描述了贝叶斯网络的目的？Which statement is most accurate about the purpose of Bayesian networks?

Question

哪一项陈述最准确地 描述了贝叶斯网络的目的？Which statement is most accurate about the purpose of Bayesian networks?

BlackTom AI · Accepted Answer

问题在于贝叶斯网络的目的，要求逐项分析各选项的正确性。
选项1: '它用于对条件概率分布进行建模。' 这个说法不完全准确。贝叶斯网络确实涉及条件概率分布，但它的核心是通过有向无环图来表达变量之间的条件依赖结构，并利用局部条件分布来形成全局的联合分布，因此仅说用于建模条件概率分布有些片面。
选项2: '它是图模型的替代品。' 这明显错误。贝叶斯网络本身就是一种图模型，属于有向图模型范畴，用于表达变量间的条件依赖关系，而不是对图模型的替代。
选项3: '它仅对布尔随机变量进行建模。' 这个说法也是不正确的。贝叶斯网络可以处理多种类型的变量（离散、连续，甚至混合类型），不仅限于布尔变量，因此此描述过于狭窄。
选项4: '它描述复杂联合分布的简单、局部分布。' 这句话准确反映了贝叶斯网络的核心思想：通过局部条件分布（通常是针对每个节点在给定其父节点的条件下的分布）来构建全局的复杂联合分布，从而在推理和学习中实现高效性。
因此，综合判断，选项4最符合贝叶斯网络的真正目的，其他选项在描述上存在片面或错误的理解。

2025FallB-X-CSE571-78760 期末考试 Final Exam

哪一项陈述最准确地描述了贝叶斯网络的目的？Which statement is most accurate about the purpose of Bayesian networks?

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2025FallB-X-CSE571-78760 期末考试 Final Exam

哪一项陈述最准确地 描述了贝叶斯网络的目的？Which statement is most accurate about the purpose of Bayesian networks?

查看解析

登录即可查看完整答案

类似问题

Given a Bayesian network as shown below, Fill in the following blanks. The probability of the alarm sounding when there is an earthquake but no a burglary is [blank1] (keep three decimal places).

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Given a Bayesian network as shown below, Fill in the following blank. The probability of the event in which there is no alarm sound when there is a Burglary but no earthquake is [blank1] (keep three decimal places).

Given a Bayesian network as shown below, Fill in the following blanks. The probability of the alarm sounding when there is neither a burglary nor an earthquake is [blank1] (keep three decimal places).

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哪一项陈述最准确地描述了贝叶斯网络的目的？Which statement is most accurate about the purpose of Bayesian networks?