def __init__(self) -> None:
        """Initialize empty buffers for mean and inverse covariance."""
        super().__init__()

        self.register_buffer("mean", torch.empty(0))
        self.register_buffer("inv_covariance", torch.empty(0))

        self.mean: torch.Tensor
        self.inv_covariance: torch.Tensor
Initialize empty buffers for mean and inverse covariance.
src/anomalib/models/components/stats/multi_variate_gaussian.py