Files
drift/models/base.py
T
Mark Aron Szulyovszky 1cd0119589 feat(DataLoader): caching MVP, added ability to use standard scaling for exogenous data, scaling is now also done before feature selection (#105)
* fix(FeatureExtractor): apply log to transform some series to normality

* feat(DataLoader): add ability of not returning returns when they're not needed (exogenous data), applied log to certain features

* feat(FeatureExtractors): added standard scaling for exogenous data

* feat(FeatureSelection): scale data with the passed in scaler before doing feature-selection

* fix(Config): sweep config

* feat(Models): output probability, store it

* feat(Core): added caching to select_features() and load_data()

* fix(Dependencies): added diskcache

* fix(Training): error when creating results DF

* feat(Models): added xgboost, fixed tests

* refactor(Cache): moved hashing to a separate function, created wrapper functions to separate business logic and caching

* fix(Tests): new syntax

* fix(Model): XGboost can't handle -1 class, so we'll use the deprecated label_encoder fornow

* fix(Model): XGBoost config

* feat(Cache): add run_clear_cache script

* fix(Pipeline) accidentally re-instatiating all_predictions for each asset
2022-01-04 11:44:35 +01:00

55 lines
1.5 KiB
Python

from __future__ import annotations
from typing import Literal, Optional
from sklearn.base import clone
from abc import ABC, abstractmethod
import numpy as np
class Model(ABC):
data_scaling: Literal["scaled", "unscaled"]
feature_selection: Literal["on", "off"]
# data_format: Literal["wide", "narrow"]
only_column: Optional[str]
model_type: Literal['ml', 'static']
predict_window_size: Literal['single_timestamp', 'window_size']
@abstractmethod
def fit(self, X: np.ndarray, y: np.ndarray) -> None:
raise NotImplementedError
@abstractmethod
def predict(self, X) -> tuple[float, np.ndarray]:
raise NotImplementedError
@abstractmethod
def clone(self) -> Model:
raise NotImplementedError
def get_name(self) -> str:
raise NotImplementedError
class SKLearnModel(Model):
data_scaling = 'scaled'
only_column = None
feature_selection = 'on'
model_type = 'ml'
predict_window_size = 'single_timestamp'
def __init__(self, model):
self.model = model
def fit(self, X: np.ndarray, y: np.ndarray) -> None:
self.model.fit(X, y)
def predict(self, X) -> tuple[float, np.ndarray]:
pred = self.model.predict(X).item()
probability = self.model.predict_proba(X).squeeze()
return (pred, probability)
def clone(self) -> SKLearnModel:
return SKLearnModel(clone(self.model))
def get_name(self) -> str:
return self.model.__class__.__name__