Synthesizers v1.0.2

• Switch to use SmartNoise SQL v1.0.2
• Synthesizers now convert integer epsilon to float rather than crashing (thanks, @lo2aayy)

SQL v1.0.2

• Fix privacy bug in approx_bounds (thanks, @TedTed)
• Remove buggy dead code for quantile computation

Synthesizers v0.3.5

• Callers can constrain inference with hints (thanks, @neat-web!)
• DropTransformer can now be used to drop columns
• Anonymizing transformer for PII (thanks, @neat-web!)
• DateTime transformer
• Fix MinMax and StandardScaler to replace null with 0.0 when indicator column present
• Support for conditional sampling
• Fix bug with onehot encoding on single-category column
• Update to OpenDP v0.6
• Update PAC-Synth to v0.6 (thanks, @rracanicci!)
• Fix dependencies to allow StandardScaler to run on Windows

SQL v0.2.9

• MySql and SQLite readers
• HAVING and ORDER BY allow expressions in addition to columns
• Fix bug where integer sums can overflow i32. All engines default to 64-bit integers now.
• Fix Postgres Reader to rollback on failed transaction (thanks, @FishmanL!)
• Update to use OpenDP v0.6

Synthesizers v0.3.0

This release is a breaking change from v0.2.x.

• Add Synthesizer.create() factory method as preferred way to create synthesizers. See Getting Started for new factory syntax.
• Add library for differentially private reversible data transforms. All synthesizers now accept a TableTransformer object, and infer one if none provided. See Data Transforms for more information.
• All synthesizers use safe differentially private preprocessing by default.
• Removed option for log_frequency from CTGAN synthesizers.
• Support for Apple Silicon

SQL v0.2.5

• Update to use OpenDP v0.5, support for Mac Silicon
• Switch to use discrete Laplace for all integer sums and counts
• Enable discrete Gaussian option
• get_privacy_cost now allows lists of queries

Synthesizers v0.2.8

• Support for pac-synth DP Marginals synthesizer (thanks, @rracanicci!)
• Bump Python requirement to 3.7+

pip install smartnoise-synth==v0.2.8

MWEM Updates

• Support for measuring Cuboids. Cuboids include multiple disjoint queries that can be measured under a single iteration.
• Default iterations and query count adapt based on dimensionality of source data
• Support for measure-only MWEM, for small cubes with optimal query workloads
• Basic accountant keeps track of spent epsilon
• Removed bin edge support, since we delegate to preprocessor now
• Better handles cases where exponential mechanism can't find a query. Should always find queries to measure now
• Debug flag prints trace information

BigQuery Support

• Support for BigQuery (thanks, @oskarkocol!)
• Support for nullable and fixed imputation
• Allow override of sensitivity via metadata

Continuous values and MWEM fix

• Support for MST synthesizer.
• Re-enabled support for continuous values in GAN synthesizers.
• Fixed bug where MWEM was adding too much noise