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https://github.com/webclinic017/drift.git
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chore(Linter): reformatted code with black (#211)
* chore(Linter): reformatted code with black * Create black.yaml
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@@ -7,39 +7,55 @@ from typing import Optional
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from data_loader.types import ForwardReturnSeries, XDataFrame, ySeries
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from copy import deepcopy
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def walk_forward_train(
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model: Model,
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X: XDataFrame,
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y: ySeries,
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forward_returns: ForwardReturnSeries,
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expanding_window: bool,
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window_size: int,
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retrain_every: int,
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from_index: Optional[pd.Timestamp],
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transformations_over_time: TransformationsOverTime,
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) -> ModelOverTime:
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models_over_time = pd.Series(index=y.index, dtype='object').rename(model.name)
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first_nonzero_return = max(get_first_valid_return_index(forward_returns), get_first_valid_return_index(X.iloc[:,0]), get_first_valid_return_index(y))
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train_from = first_nonzero_return + window_size + 1 if from_index is None else X.index.to_list().index(from_index)
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def walk_forward_train(
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model: Model,
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X: XDataFrame,
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y: ySeries,
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forward_returns: ForwardReturnSeries,
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expanding_window: bool,
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window_size: int,
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retrain_every: int,
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from_index: Optional[pd.Timestamp],
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transformations_over_time: TransformationsOverTime,
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) -> ModelOverTime:
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models_over_time = pd.Series(index=y.index, dtype="object").rename(model.name)
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first_nonzero_return = max(
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get_first_valid_return_index(forward_returns),
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get_first_valid_return_index(X.iloc[:, 0]),
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get_first_valid_return_index(y),
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)
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train_from = (
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first_nonzero_return + window_size + 1
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if from_index is None
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else X.index.to_list().index(from_index)
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)
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train_till = len(y)
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if model.only_column is not None:
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X = X[[column for column in X.columns if model.only_column in column]]
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if model.data_transformation == 'original':
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if model.data_transformation == "original":
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transformations_over_time = []
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for index in tqdm(range(train_from, train_till, retrain_every)):
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train_window_start = X.index[first_nonzero_return] if expanding_window else X.index[index - window_size - 1]
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train_window_start = (
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X.index[first_nonzero_return]
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if expanding_window
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else X.index[index - window_size - 1]
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)
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train_window_end = X.index[index - 1]
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current_transformations = [transformation_over_time[index] for transformation_over_time in transformations_over_time]
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current_transformations = [
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transformation_over_time[index]
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for transformation_over_time in transformations_over_time
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]
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X_slice = X[train_window_start:train_window_end]
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for transformation in current_transformations:
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X_slice = transformation.transform(X_slice)
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X_slice = X_slice.to_numpy()
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y_slice = y[train_window_start:train_window_end].to_numpy()
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@@ -48,4 +64,4 @@ def walk_forward_train(
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models_over_time[X.index[index]] = current_model
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return models_over_time
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return models_over_time
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