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Percentage of visits that meet specific k-anonymity thresholds. For different user-specified k-anonymity minimum thresholds, the percentage of visits in a data set with a k-anonymity value below the minimum threshold (and not sufficiently de-identified) decreases quickly as the average distance moved increases. For over 99% of the visits in all test data sets, a minimum k-anonymity value of 20 could be achieved with an average distance moved of 0.25 km.
