The Synthetic Data Generator (SDG) is a specialized framework designed to generate high-quality structured tabular data. It incorporates a wide range of single-table, multi-table data synthesis algorithms and LLM-based synthetic data generation models.
Synthetic data, generated by machines using real data, metadata, and algorithms, does not contain any sensitive information, yet it retains the essential characteristics of the original data. There is no direct correlation between synthetic data and real data, making it exempt from privacy regulations such as GDPR and ADPPA. This eliminates the risk of privacy breaches in practical applications.
High-quality synthetic data can be safely utilized across various domains including data sharing, model training and debugging, system development and testing, etc. Read the latest API docs for more details!
- Technological advancements
- Supports a wide range of statistical data synthesis algorithms, LLM-based synthetic data generation model is also integrated;
- Optimised for big data scenarios, effectively reducing memory consumption;
- Continuously tracking the latest advances in academia and industry, and introducing support for excellent algorithms and models in a timely manner.
- Privacy enhancements
- SDG supports differential privacy, anonymization and other methods to enhance the security of synthetic data.
- Easy to extend
- Supports expansion of models, data processing, data connectors, etc. in the form of plug-in packages
For a long time, LLM has been used to understand and generate various types of data. In fact, LLM also has certain capabilities in tabular data generation. Also, it has some abilities that cannot be achieved by traditional (based on GAN methods or statistical methods) .
Our sdgx.models.LLM.single_table.gpt.SingleTableGPTModel implements two new features:
No training data is required, synthetic data can be generated based on metadata data.
Infer new column data based on the existing data in the table and the knowledge mastered by LLM.
You can use pre-built images to quickly experience the latest features.
docker pull idsteam/sdgx:latestpip install sdgxUse SDG by installing it through the source code.
git clone git@github.com:hitsz-ids/synthetic-data-generator.git
pip install .
# Or install from git
pip install git+https://github.com/hitsz-ids/synthetic-data-generator.gitfrom sdgx.data_connectors.csv_connector import CsvConnector
from sdgx.models.ml.single_table.ctgan import CTGANSynthesizerModel
from sdgx.synthesizer import Synthesizer
from sdgx.utils import download_demo_data
# This will download demo data to ./dataset
dataset_csv = download_demo_data()
# Create data connector for csv file
data_connector = CsvConnector(path=dataset_csv)
# Initialize synthesizer, use CTGAN model
synthesizer = Synthesizer(
model=CTGANSynthesizerModel(epochs=1), # For quick demo
data_connector=data_connector,
)
# Fit the model
synthesizer.fit()
# Sample
sampled_data = synthesizer.sample(1000)
print(sampled_data)Real data are as follows：
>>> data_connector.read()
age workclass fnlwgt education ... capitalloss hoursperweek native-country class
0 2 State-gov 77516 Bachelors ... 0 2 United-States <=50K
1 3 Self-emp-not-inc 83311 Bachelors ... 0 0 United-States <=50K
2 2 Private 215646 HS-grad ... 0 2 United-States <=50K
3 3 Private 234721 11th ... 0 2 United-States <=50K
4 1 Private 338409 Bachelors ... 0 2 Cuba <=50K
... ... ... ... ... ... ... ... ... ...
48837 2 Private 215419 Bachelors ... 0 2 United-States <=50K
48838 4 NaN 321403 HS-grad ... 0 2 United-States <=50K
48839 2 Private 374983 Bachelors ... 0 3 United-States <=50K
48840 2 Private 83891 Bachelors ... 0 2 United-States <=50K
48841 1 Self-emp-inc 182148 Bachelors ... 0 3 United-States >50K
[48842 rows x 15 columns]Synthetic data are as follows：
>>> sampled_data
age workclass fnlwgt education ... capitalloss hoursperweek native-country class
0 1 NaN 28219 Some-college ... 0 2 Puerto-Rico <=50K
1 2 Private 250166 HS-grad ... 0 2 United-States >50K
2 2 Private 50304 HS-grad ... 0 2 United-States <=50K
3 4 Private 89318 Bachelors ... 0 2 Puerto-Rico >50K
4 1 Private 172149 Bachelors ... 0 3 United-States <=50K
.. ... ... ... ... ... ... ... ... ...
995 2 NaN 208938 Bachelors ... 0 1 United-States <=50K
996 2 Private 166416 Bachelors ... 2 2 United-States <=50K
997 2 NaN 336022 HS-grad ... 0 1 United-States <=50K
998 3 Private 198051 Masters ... 0 2 United-States >50K
999 1 NaN 41973 HS-grad ... 0 2 United-States <=50K
[1000 rows x 15 columns]The SDG project was initiated by Institute of Data Security, Harbin Institute of Technology. If you are interested in out project, welcome to join our community. We welcome organizations, teams, and individuals who share our commitment to data protection and security through open source:
- Read CONTRIBUTING before draft a pull request.
- Submit an issue by viewing View First Good Issue or submit a Pull Request.
- CTGAN：Modeling Tabular Data using Conditional GAN
- C3-TGAN: C3-TGAN- Controllable Tabular Data Synthesis with Explicit Correlations and Property Constraints
- TVAE：Modeling Tabular Data using Conditional GAN
- table-GAN：Data Synthesis based on Generative Adversarial Networks
- CTAB-GAN:CTAB-GAN: Effective Table Data Synthesizing
- OCT-GAN: OCT-GAN: Neural ODE-based Conditional Tabular GANs
The SDG open source project uses Apache-2.0 license, please refer to the LICENSE.