Source code for skfolio.moments.expected_returns._base

"""Base Expected returns estimators."""

# Copyright (c) 2023
# Author: Hugo Delatte <delatte.hugo@gmail.com>
# License: BSD 3 clause
# Implementation derived from:
# scikit-learn, Copyright (c) 2007-2010 David Cournapeau, Fabian Pedregosa, Olivier
# Grisel Licensed under BSD 3 clause.

from abc import ABC, abstractmethod

import numpy as np
import numpy.typing as npt
import sklearn.base as skb


[docs] class BaseMu(skb.BaseEstimator, ABC): """Base class for all expected returns estimators in skfolio. Notes ----- All estimators should specify all the parameters that can be set at the class level in their ``__init__`` as explicit keyword arguments (no ``*args`` or ``**kwargs``). """ mu_: np.ndarray @abstractmethod def __init__(self): pass @abstractmethod def fit(self, X: npt.ArrayLike, y=None): pass