Add PolyaEstimateNoiser #115
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
jiayu-google
approved these changes
Nov 24, 2020
kungfucraig
approved these changes
Nov 24, 2020
src/estimators/estimator_noisers.py
Outdated
| """A noiser that adds a difference of two Polya noises to a cardinality estimate.""" | ||
|
|
||
| def __init__(self, r, p, random_state=None): | ||
| """Instantiates a GaussianEstimateNoiser object. |
src/estimators/estimator_noisers.py
Outdated
| lambda x: x, r, p, random_state=random_state) | ||
|
|
||
| def __call__(self, cardinality_estimate): | ||
| """Returns a cardinality estimate with Gaussian noise.""" |
|
Thanks for the catches Craig. Fixed now. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Add PolyaMechanism and PolyaEstimateNoiser for adding a difference of two Polya noises to the input.
Note that, since we never use Polya alone (and hence there is no formal privacy proofs for the mechanism by itself), the initialization is done through the Polya parameters, rather than the privacy parameters.