arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1301.3897cs.AIcs.LGstat.ML
收藏

MDL学习贝叶斯网络的分支定界算法

A Branch-and-Bound Algorithm for MDL Learning Bayesian Networks

University of California, Los Angeles(加州大学洛杉矶分校)

Jin Tian

摘要:

本文扩展了[Suzuki,1996]中的工作,提出了一种基于最小描述长度(MDL)原则的贝叶斯网络结构学习的有效的深度优先分支定界算法。该算法彻底搜索所有网络结构,并保证找到具有最佳MDL分数的网络。初步实验表明,该算法是有效的,并且时间复杂度随样本量的增加而缓慢增长。该算法是有用的经验研究次优启发式搜索算法的性能和MDL原则在学习贝叶斯网络的充分性。

英文摘要:

This paper extends the work in [Suzuki, 1996] and presents an efficient depth-first branch-and-bound algorithm for learning Bayesian network structures, based on the minimum description length (MDL) principle, for a given (consistent) variable ordering. The algorithm exhaustively searches through all network structures and guarantees to find the network with the best MDL score. Preliminary experiments show that the algorithm is efficient, and that the time complexity grows slowly with the sample size. The algorithm is useful for empirically studying both the performance of suboptimal heuristic search algorithms and the adequacy of the MDL principle in learning Bayesian networks.

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。

↑