k-anonymity metric, used for analysis of reidentification
Set of fields to compute k-anonymity over.
When multiple fields are specified, they are
considered a single composite key. Structs and
repeated data types are not supported; however,
nested fields are supported so long as they are
not structs themselves or nested within a
Message indicating that multiple rows might be associated to
a single individual. If the same entity_id is associated to
multiple quasi-identifier tuples over distinct rows, we
consider the entire collection of tuples as the composite
quasi-identifier. This collection is a multiset: the order
in which the different tuples appear in the dataset is
ignored, but their frequency is taken into account.
Important note: a maximum of 1000 rows can be associated to
a single entity ID. If more rows are associated with the
same entity ID, some might be ignored.