def __str__(self) -> str:
    return f'{self.name}_ppr_alpha={self.alpha}_k={self.k}_eps={self.eps}_lcc={self.use_lcc}'
def __str__(self) -> str:
    return f'{self.name}_ppr_alpha={self.alpha}_k={self.k}_eps={self.eps}_lcc={self.use_lcc}'