关键词: 不确定性数据, 数据清理, 信息熵, 不确定度, 可信区间

Abstract: In response to the issue that data anomalies in the uncertain databases often hamper the efficient and effective use of data, an uncertain data cleaning method was proposed to reduce abnormal data based on the information entropy theory. First, the uncertainty degree of uncertain data was defined by using information entropy. Then, the confidence interval of uncertain data was obtained based on statistical method with the degree of uncertainty. By means of the confidence interval, the uncertain databases were cleaned. The experimental results show the effectiveness and efficiency of the proposed method.

Key words: uncertain data, data cleansing, information entropy, uncertainty degree, confidence interval