Assessment of the Level of Geo-Statistical Data Dissemination
Date Issued
2016
Date
2016
Author(s)
Wu, Yi-Jie
Abstract
ABSTRACT By the end of 2012, the Ministry of Interior has built the system of Census Geography. There are three new spatial levels for data dissemination: the statistical area, the 1st level dissemination area and the 2nd level dissemination area. Social economic statistical data can be released by these three additional levels to improve its accuracy. However, privacy exposure is the critical issue that has to be concerned. This study proposes a method to determine the level of dissemination areas in order to provide the most accurate data and consider privacy protection as well. Two indicators, attribute integrity and spatial accuracy, are employed in the study. It is found that the selection of the most appropriate dissemination area depends on the characteristics of data including spatial distribution and attribute values. It is also found that higher level dissemination area may still preserve the same spatial accuracy as the lower level areas. That is to say it is possible to consider data accuracy and privacy protection simultaneously.
Subjects
Spatial privacy
Kernel density estimation
the system of Census Geography
Type
thesis
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