GroupbyCountQuery.suppress

from tmlt.analytics import GroupbyCountQuery

GroupbyCountQuery.suppress(threshold)

Returns a new query with an added postprocessing thresholding step.

Example

>>> my_private_data.toPandas()
   A  B  X
0  0  1  0
1  1  0  1
2  1  2  1
>>> budget = PureDPBudget(float("inf"))
>>> sess = Session.from_dataframe(
...     privacy_budget=budget,
...     source_id="my_private_data",
...     dataframe=my_private_data,
...     protected_change=AddOneRow(),
... )
>>> # Building a groupby count query and suppressing results < 1
>>> query = (
...     QueryBuilder("my_private_data")
...     .groupby(KeySet.from_dict({"A": ["0", "1", "2"]}))
...     .count()
...     .suppress(1)
... )
>>> # Answering the query with infinite privacy budget
>>> answer = sess.evaluate(
...     query,
...     PureDPBudget(float("inf"))
... )
>>> answer.sort("A").toPandas()
   A  count
0  0      1
1  1      2

Parameters:

threshold (float) – Threshold value. All results with a lower value in the aggregated column will be suppressed.

Return type:

Query