Data cleaning and transformation is an important area of data warehouse, the method for detecting approximately duplicate database record is one of technology difficulties.
数据清理转换是数据仓库中的一个重要研究领域，其技术难点之一是重复记录的识别。
Methods of data cleaning, data integration and transformation, and data reduction are discussed.
讨论数据清理、数据集成和变换、数据归约的方法。
Methods of data cleaning, data integration and transformation, and data reduction are discussed.
讨论数据清理、数据集成和变换、数据归约的方法。
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