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arXiv 1809.00792cs.DBcs.DS
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top-k高效用项集挖掘方法的比较研究

A comparative study of top-k high utility itemset mining methods

Srikumar Krishnamoorthy

摘要:

高效用项集(HUI)挖掘问题是数据采掘领域的重要问题之一。这个问题提供了更大的灵活性,决策者将她/他的概念的效用模式挖掘过程。然而,这个问题需要决策者选择一个最小的效用阈值来发现有趣的模式。由于不同的项集特征及其效用分布,这是相当具有挑战性的。为了解决这个问题,Top-K高效用项目集(THUI)挖掘问题在文献中被引入。THUI挖掘问题主要是HUI挖掘问题的一个变体,它允许决策者指定所需的HUI数量,而不是最小效用阈值。在文献中已经引入了几种算法来有效地挖掘前k个HUI。本文系统地分析了文献中的top-k HUI挖掘方法,对方法进行了描述,并进行了比较分析。本文还介绍和分析了高效top-k HUI挖掘所采用的数据结构、阈值提高策略和剪枝策略。此外,本文回顾了top-k HUI挖掘问题的几个扩展,如数据流挖掘,序列模式挖掘和货架效用挖掘。本文可能有助于研究人员研究top-k HUI挖掘的关键方法,评估文献中的空白,探索新的研究机会,并提高高效用模式挖掘的最新水平。

英文摘要:

High Utility Itemset (HUI) mining problem is one of the important problems in the data mining literature. The problem offers greater flexibility to a decision maker to incorporate her/his notion of utility into the pattern mining process. The problem, however, requires the decision maker to choose a minimum utility threshold value for discovering interesting patterns. This is quite challenging due to the disparate itemset characteristics and their utility distributions. In order to address this issue, Top-K High Utility Itemset (THUI) mining problem was introduced in the literature. THUI mining problem is primarily a variant of the HUI mining problem that allows a decision maker to specify the desired number of HUIs rather than the minimum utility threshold value. Several algorithms have been introduced in the literature to efficiently mine top-k HUIs. This paper systematically analyses the top-k HUI mining methods in the literature, describes the methods, and performs a comparative analysis. The data structures, threshold raising strategies, and pruning strategies adopted for efficient top-k HUI mining are also presented and analysed. Furthermore, the paper reviews several extensions of the top-k HUI mining problem such as data stream mining, sequential pattern mining and on-shelf utility mining. The paper is likely to be useful for researchers to examine the key methods in top-k HUI mining, evaluate the gaps in literature, explore new research opportunities and enhance the state-of-the-art in high utility pattern mining.

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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