From entry aggregation for privacy in glossary Artificial Intelligence: humans at the heart of algorithms
Often aggregate data such as averages or sums over groups is used as a way to protect privacy as individual values are lost in the whole. However, this is not a complete protection. One challenge is algorithmic, if one has sufficient averages of different groupings it may be possible to infer the values of specific indivdiuals based on which groups they belong to. The other is that the use of the aggregate data may not be one that and individual would agree to, that is violating their personal data sovereignty.
Used in Chap. 6: page 81