Hacktoberfest 2026: los issues que los mantenedores marcaron para octubre, abiertos y aptos para principiantes. Explorar issues de Hacktoberfest

SKLearn Pipeline calculate sensitivity of categorical features for Local DP

Abierto
#389 2 comentarios 0 reacciones 1 asignado Ver en GitHub

@grilhami ya está trabajando en esto.

Desde el 30/11/2021.

Evaluación

Este issue todavía no se ha evaluado.

Descripción

Type: New Feature :heavy_plus_sign:

Feature Description

The current SKLearn Pipeline noise mechanism "operator" for Local DPassumes that the dataset given contains only all numerical features. This means that noise is calculated on top of the sensitivity calculation on numerical features.

However, most often, datasets also contain categorical features, which requires a different method to calculate the sensitivity. The "operator" should also support categorical features.

This applies to all the noise mechanisms: LaplaceMechanism, GaussianMechanism, and GeometricMechanism.

Note: as far as this issue was created, only LaplaceMechanism has been implemented, so it's a good starting point to start with LaplaceMechanism. Once GeometricMechanism and GaussianMechanism have been implemented, the specifications for categorical feature support are the same.

Additional Context

Preferably, the support for the categorial features would be in the form of parameters for the "operator" class.

For example, in the case of LaplaceMechanism, it would look something like this:

# Set a privacy budget accountant
accountant = BudgetAccountant(10000)

# Set sensitivity function for numerical data
sensitivity = lambda x: (max(x) - min(x))/ (len(x) + 1)

# Set sensitivity function for categorical data
sensitivity_cat = lambda x: ...

# Indecies of the categorical features in the dataset
cat_features = [0, 1, ...]

# Set laplace mechanism with epsilon, sensitivity, and accountant
laplace = LaplaceMechanism(
    epsilon=0.1, 
    sensitivity=sensitivity, 
    accountant=accountant,
    sensitivity_cat=sensitivity_cat,
    cat_features=cat_features
)

# Initialize scaler and naive bayes extimator
scaler = StandardScaler()
nb = GaussianNB()

# Create the pipeline
pipe = Pipeline([('scaler', scaler), ('laplace', laplace), ('nb', nb)])

For more examples, please have look at the notebook example of Laplace Mechanism's implementation.

As starting guidance, please refer to the source code for LaplaceMechanism in here.

Lenguaje dominante
Python
Estrellas
550
Forks
142
Métricas de merge de PR
Sin PR fusionados en 30 d

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

Más de OpenMined/PyDP

Todos los issues de OpenMined/PyDP

Issues similares

Más issues de Python

Recibe los nuevos issues en tu correo

Un resumen breve de issues de GitHub para principiantes.