(l)The Quality of Data数据质量 ·Accuracy准确性 。Integrity完整性 。Consistency /Validity一致有效性 ·The timeliness:update时效性 ·Credibility可信性 whether the data is trust by users 。Interpretability可解释性 data is easy to be understandable 26 DATA Copyright 2019 by Xiaoyu Li.Copyright © 2019 by Xiaoyu Li. 26 (1) The Quality of Data 数据质量  Accuracy 准确性  Integrity 完整性  Consistency /Validity 一致有效性  The timeliness: update 时效性  Credibility 可信性 whether the data is trust by users  Interpretability可解释性 data is easy to be understandable