Files
drift/tests/test_walk_forward.py
T
Mark Aron Szulyovszky b5ddee8dce feat(HPO): added run_hpo script (#237)
* feat(HPO): added `run_hpo` script

* fix(Linter): ran

* feat(HPO): removed any reference to sweep (superseeded by optuna)

* fix(HPO): optimize for sharpe

* fix(Config): removed glassnode data, save trials from hpo

* feat(Labelling): added three-balanced method works again

* fix(BetSizing): set the correct class labels

* fix(HPO): powerset should return what's expected, added two new normalization methods

* fix(Linter): ran

* fix(DataLoader): sort the dataframe when fetching data

* fix(Config): only take z-score of other assets
2022-03-15 14:43:16 +01:00

90 lines
2.4 KiB
Python

import numpy as np
import pandas as pd
from training.walk_forward import walk_forward_train, walk_forward_inference
from models.base import Model
from sklearn.base import BaseEstimator, ClassifierMixin
no_of_rows = 100
def __generate_incremental_test_data(no_of_rows) -> tuple[pd.DataFrame, pd.Series]:
"""Test data, where X[n][any_column] == y[n]+1"""
no_columns = 6
X = [[row] * no_columns for row in range(no_of_rows)]
assert X[1][0] == 1
assert X[2][0] == 2
assert X[3][0] == 3
assert X[4][0] == 4
X = pd.DataFrame(X)
y = [row + 1 for row in range(no_of_rows)]
assert y[1] == 2
assert y[2] == 3
assert y[3] == 4
y = pd.Series(y)
return X, y
class IncrementingStubModel(Model, BaseEstimator, ClassifierMixin):
"""
A deteministic model that can predict the future with 100% accuracy
It verifies that the X[n][any_column]+1 == y[n]
"""
data_transformation = "original"
only_column = None
predict_window_size = "single_timestamp"
def __init__(self, window_length) -> None:
super().__init__()
self.window_length = window_length
def fit(self, X, y):
assert len(X) == self.window_length
for i in range(len(X)):
assert X[i][0] + 1 == y[i]
def predict(self, X):
return np.array([row[0] + 1 for row in X])
def predict_proba(self, X):
return np.array([[row[0] + 1, 0] for row in X])
def test_walk_forward_train_test():
X, y = __generate_incremental_test_data(no_of_rows)
window_length = 10
retrain_every = 10
model = IncrementingStubModel(window_length=window_length)
model_over_time = walk_forward_train(
model=model,
X=X,
y=y,
forward_returns=y,
expanding_window=False,
window_size=window_length,
retrain_every=retrain_every,
from_index=None,
transformations_over_time=[],
)
predictions, _ = walk_forward_inference(
model_name="test",
model_over_time=model_over_time,
transformations_over_time=[],
X=X,
expanding_window=False,
window_size=window_length,
retrain_every=retrain_every,
class_labels=[0, 1],
from_index=None,
)
# verify if predictions are the same as y
for i in range(window_length + 2, no_of_rows):
assert predictions[i] == y[i]