Читать книгу Administrative Records for Survey Methodology - Группа авторов - Страница 44

The noise infusion algorithm for QWI is designed to preserve validity of the data for particular analysis tasks. We demonstrate analytical validity using two statistics: time-series properties of the distorted data relative to the confidential data of several estimates, and the cross-sectional unbiasedness of the published data for beginning-of-quarter employment B. The unit of analysis is an interior substate geography × industry × age × sex cell kt.⁹ Analytical validity is obtained when the data display no bias and the additional dispersion due to the confidentiality protection system can be quantified so that statistical inferences can be adjusted to accommodate it.