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A fair loss function

Project description

A fair PyTorch loss function

REUSE status PyPI version

The goal of this loss function is to take fairness into account during the training of a PyTorch model. It works by adding a fairness measure to a regular loss value, following this equation:

Installation

pip install fair-loss

Example

import torch
from fair_loss import FairLoss

model = torch.nn.Sequential(torch.nn.Linear(5, 1), torch.nn.ReLU())
data = torch.randint(0, 5, (100, 5), dtype=torch.float, requires_grad=True)
y_true = torch.randint(0, 5, (100, 1), dtype=torch.float)
y_pred = model(data)
# Let's say the sensitive attribute is in the second dimension
dim = 1
criterion = FairLoss(torch.nn.MSELoss(), data[:, dim].detach().unique(), accuracy)
loss = criterion(data[:, dim], y_pred, y_true)
loss.backward()

Documentation

See the documentation.

Project details


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