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cleaningdata:用于获取和清理数据项目
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2021-06-17
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清理数据 用于获取和清理数据项目 ###采取的分析步骤 使用 read.table 将特征(变量名)加载到内存中 使用 read.table 将活动标签加载到内存中 测试数据对应的活动数据被加载到内存中 将与测试数据对应的活动数据与活动标签数据合并,以获得测试数据活动的描述性名称 将训练数据对应的活动数据加载到内存中 将训练数据对应的活动数据与活动标签数据合并,以获得训练数据活动的描述性名称 测试数据的主题身份已加载到内存中 训练数据的主题身份已加载到内存中 LaF 库已加载到内存 固定宽度文件中的测试数据已加载到内存中 测试数据的活动名称数据和主题数据与测试数据集合并 固定宽度文件中的训练数据已加载到内存中 测试数据的活动名称数据和主题数据与训练数据集合并 使用 rbind 合并训练集和测试集以创建一个数据集 从组合数据集中仅提取受试者、活动名称以及每次测量的平均值和标准偏差的测量值 d
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