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arXiv 1902.00633cs.CC
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基于项集的并行计算的计算复杂性

Computational Complexity of Queries Based on Itemsets

Nikolaj Tatti

摘要:

我们调查确定的频率的关联词的频繁集的基础上的确切界限。我们的情况是一个重要的特殊情况下,一些一般的概率逻辑问题,已知是棘手的。我们表明,尽管有这些限制,我们的问题也是棘手的,即,我们表明,检查是否最大一致的查询频率大于一个给定的阈值是NP-完全的,评估的最大熵估计的查询是PP-硬。我们还证明了一致性检验是NP完全的。

英文摘要:

We investigate determining the exact bounds of the frequencies of conjunctions based on frequent sets. Our scenario is an important special case of some general probabilistic logic problems that are known to be intractable. We show that despite the limitations our problems are also intractable, namely, we show that checking whether the maximal consistent frequency of a query is larger than a given threshold is NP-complete and that evaluating the Maximum Entropy estimate of a query is PP-hard. We also prove that checking consistency is NP-complete.

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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