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arXiv 1303.1464cs.AI
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加性信度网络模型

Additive Belief-Network Models

Stanford University School of Medicine(斯坦福大学医学院);Rockwell Palo Alto Laboratory(罗克韦尔帕洛阿尔托实验室)

Paul Dagum, Adam Galper

摘要:

概率推理固有的困难性阻碍了信度网络在大领域的应用。噪声OR门[30]和概率相似性网络[18,17]通过限制模型表达能力来避免推理的复杂性。最近的工作在信网络模型的应用时间序列分析和预测[9,10]已经引起了加性信网络模型(ABNM)。我们(1)讨论了由信度网络的加性分解所作的近似的性质和含义,(2)在可用数据稀缺时显示出更高的加性模型归纳效率,(3)推广概率推理算法以利用ABNM的加性分解,(4)显示出更高的推理效率,(5)用简单的加性信度网络比较推理结果。

英文摘要:

The inherent intractability of probabilistic inference has hindered the application of belief networks to large domains. Noisy OR-gates [30] and probabilistic similarity networks [18, 17] escape the complexity of inference by restricting model expressiveness. Recent work in the application of belief-network models to time-series analysis and forecasting [9, 10] has given rise to the additive belief network model (ABNM). We (1) discuss the nature and implications of the approximations made by an additive decomposition of a belief network, (2) show greater efficiency in the induction of additive models when available data are scarce, (3) generalize probabilistic inference algorithms to exploit the additive decomposition of ABNMs, (4) show greater efficiency of inference, and (5) compare results on inference with a simple additive belief network.

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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