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Updated: Jul 19, 2025

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收回:数字行业金融风险预警系统基于改进的K-Means集群算法

Computational Intelligence And Neuroscience

    Computational intelligence and neuroscience
    |August 18, 2023
    PubMed
    概括

    这篇文章已被撤回. 最初的研究,DOI 10.1155/2022/6797185标识,不再被认为是有效的. 进一步的研究应该咨询更新或替代出版物.

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    Cluster Sampling Method01:20

    Cluster Sampling Method

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    Aggregate classification is generally based on its size, petrographic characteristics, weight, and source. Size classification ranges from coarse to fine aggregates, defined by the size of the particles. Coarse aggregates are particles that do not pass through ASTM sieve No. 4, and aggregates that pass through the sieve are fine aggregates.
    Petrographic classification groups aggregates based on common mineralogical characteristics. Some of the common mineral groups found in aggregates are...
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