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Merge branch 'freqtrade:feat/freqai' into feat/freqai

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lolong 2022-07-13 08:44:49 +02:00 committed by GitHub
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6 changed files with 131 additions and 29 deletions
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14
freqtrade/freqai/data_drawer.py
View File

@ -1,13 +1,13 @@
import collections
import json
import logging
import pickle
import re
import shutil
import threading
from pathlib import Path
from typing import Any, Dict, Tuple
# import pickle as pk
import numpy as np
import pandas as pd
from pandas import DataFrame
@ -78,8 +78,8 @@ class FreqaiDataDrawer:
"""
exists = Path(self.full_path / str("historic_predictions.json")).resolve().exists()
if exists:
with open(self.full_path / str("historic_predictions.json"), "r") as fp:
self.pair_dict = json.load(fp)
with open(self.full_path / str("historic_predictions.pkl"), "rb") as fp:
self.historic_predictions = pickle.load(fp)
logger.info(f"Found existing historic predictions at {self.full_path}, but beware of "
"that statistics may be inaccurate if the bot has been offline for "
"an extended period of time.")
@ -97,15 +97,15 @@ class FreqaiDataDrawer:
"""
Save data drawer full of all pair model metadata in present model folder.
"""
with open(self.full_path / str("pair_dictionary.json"), "w") as fp:
json.dump(self.pair_dict, fp, default=self.np_encoder)
with open(self.full_path / str("historic_predictions.pkl"), "wb") as fp:
pickle.dump(self.historic_predictions, fp, protocol=pickle.HIGHEST_PROTOCOL)
def save_historic_predictions_to_disk(self):
"""
Save data drawer full of all pair model metadata in present model folder.
"""
with open(self.full_path / str("historic_predictions.json"), "w") as fp:
json.dump(self.historic_predictions, fp, default=self.np_encoder)
with open(self.full_path / str("pair_dictionary.json"), "w") as fp:
json.dump(self.pair_dict, fp, default=self.np_encoder)
def save_follower_dict_to_disk(self):
"""

16
freqtrade/freqai/data_kitchen.py
View File

@ -57,6 +57,7 @@ class FreqaiDataKitchen:
self.live = live
self.pair = pair
self.svm_model: linear_model.SGDOneClassSVM = None
self.keras = self.freqai_config.get("keras", False)
self.set_all_pairs()
if not self.live:
self.full_timerange = self.create_fulltimerange(
@ -92,7 +93,7 @@ class FreqaiDataKitchen:
return
def save_data(self, model: Any, coin: str = "", keras_model=False, label=None) -> None:
def save_data(self, model: Any, coin: str = "", label=None) -> None:
"""
Saves all data associated with a model for a single sub-train time range
:params:
@ -106,7 +107,7 @@ class FreqaiDataKitchen:
save_path = Path(self.data_path)
# Save the trained model
if not keras_model:
if not self.keras:
dump(model, save_path / f"{self.model_filename}_model.joblib")
else:
model.save(save_path / f"{self.model_filename}_model.h5")
@ -140,7 +141,7 @@ class FreqaiDataKitchen:
return
def load_data(self, coin: str = "", keras_model=False) -> Any:
def load_data(self, coin: str = "") -> Any:
"""
loads all data required to make a prediction on a sub-train time range
:returns:
@ -174,7 +175,7 @@ class FreqaiDataKitchen:
# try to access model in memory instead of loading object from disk to save time
if self.live and self.model_filename in self.dd.model_dictionary:
model = self.dd.model_dictionary[self.model_filename]
elif not keras_model:
elif not self.keras:
model = load(self.data_path / str(self.model_filename + "_model.joblib"))
else:
from tensorflow import keras
@ -559,6 +560,13 @@ class FreqaiDataKitchen:
predict: bool = If true, inference an existing SVM model, else construct one
"""
if self.keras:
logger.warning("SVM outlier removal not currently supported for Keras based models. "
"Skipping user requested function.")
if predict:
self.do_predict = np.ones(len(self.data_dictionary["prediction_features"]))
return
if predict:
assert self.svm_model, "No svm model available for outlier removal"
y_pred = self.svm_model.predict(self.data_dictionary["prediction_features"])

32
freqtrade/freqai/freqai_interface.py
View File

@ -69,6 +69,9 @@ class IFreqaiModel(ABC):
self.ready_to_scan = False
self.first = True
self.keras = self.freqai_info.get("keras", False)
if self.keras and self.freqai_info.get("feature_parameters", {}).get("DI_threshold", 0):
self.freqai_info["feature_parameters"]["DI_threshold"] = 0
logger.warning("DI threshold is not configured for Keras models yet. Deactivating.")
self.CONV_WIDTH = self.freqai_info.get("conv_width", 2)
def assert_config(self, config: Dict[str, Any]) -> None:
@ -197,9 +200,9 @@ class IFreqaiModel(ABC):
self.model = self.train(dataframe_train, metadata["pair"], dk)
self.dd.pair_dict[metadata["pair"]]["trained_timestamp"] = trained_timestamp.stopts
dk.set_new_model_names(metadata["pair"], trained_timestamp)
dk.save_data(self.model, metadata["pair"], keras_model=self.keras)
dk.save_data(self.model, metadata["pair"])
else:
self.model = dk.load_data(metadata["pair"], keras_model=self.keras)
self.model = dk.load_data(metadata["pair"])
self.check_if_feature_list_matches_strategy(dataframe_train, dk)
@ -276,7 +279,7 @@ class IFreqaiModel(ABC):
)
# load the model and associated data into the data kitchen
self.model = dk.load_data(coin=metadata["pair"], keras_model=self.keras)
self.model = dk.load_data(coin=metadata["pair"])
if not self.model:
logger.warning(
@ -353,13 +356,15 @@ class IFreqaiModel(ABC):
of how outlier data points are dropped from the dataframe used for training.
"""
if self.freqai_info.get("feature_parameters", {}).get("principal_component_analysis"):
if self.freqai_info.get("feature_parameters", {}).get(
"principal_component_analysis", False
):
dk.principal_component_analysis()
if self.freqai_info.get("feature_parameters", {}).get("use_SVM_to_remove_outliers"):
if self.freqai_info.get("feature_parameters", {}).get("use_SVM_to_remove_outliers", False):
dk.use_SVM_to_remove_outliers(predict=False)
if self.freqai_info.get("feature_parameters", {}).get("DI_threshold"):
if self.freqai_info.get("feature_parameters", {}).get("DI_threshold", 0):
dk.data["avg_mean_dist"] = dk.compute_distances()
# if self.feature_parameters["determine_statistical_distributions"]:
@ -378,13 +383,15 @@ class IFreqaiModel(ABC):
of how the do_predict vector is modified. do_predict is ultimately passed back to strategy
for buy signals.
"""
if self.freqai_info.get("feature_parameters", {}).get("principal_component_analysis"):
if self.freqai_info.get("feature_parameters", {}).get(
"principal_component_analysis", False
):
dk.pca_transform(dataframe)
if self.freqai_info.get("feature_parameters", {}).get("use_SVM_to_remove_outliers"):
if self.freqai_info.get("feature_parameters", {}).get("use_SVM_to_remove_outliers", False):
dk.use_SVM_to_remove_outliers(predict=True)
if self.freqai_info.get("feature_parameters", {}).get("DI_threshold"):
if self.freqai_info.get("feature_parameters", {}).get("DI_threshold", 0):
dk.check_if_pred_in_training_spaces()
# if self.feature_parameters["determine_statistical_distributions"]:
@ -479,14 +486,15 @@ class IFreqaiModel(ABC):
if self.dd.pair_dict[pair]["priority"] == 1 and self.scanning:
with self.lock:
self.dd.pair_to_end_of_training_queue(pair)
dk.save_data(model, coin=pair, keras_model=self.keras)
dk.save_data(model, coin=pair)
if self.freqai_info.get("purge_old_models", False):
self.dd.purge_old_models()
# self.retrain = False
def set_initial_historic_predictions(self, df: DataFrame, model: Any,
dk: FreqaiDataKitchen, pair: str) -> None:
def set_initial_historic_predictions(
self, df: DataFrame, model: Any, dk: FreqaiDataKitchen, pair: str
) -> None:
trained_predictions = model.predict(df)
pred_df = DataFrame(trained_predictions, columns=dk.label_list)
for label in dk.label_list:

9
freqtrade/freqai/prediction_models/BaseRegressionModel.py
View File

@ -12,9 +12,9 @@ logger = logging.getLogger(__name__)
class BaseRegressionModel(IFreqaiModel):
"""
User created prediction model. The class needs to override three necessary
functions, predict(), train(), fit(). The class inherits ModelHandler which
has its own DataHandler where data is held, saved, loaded, and managed.
Base class for regression type models (e.g. Catboost, LightGBM, XGboost etc.).
User *must* inherit from this class and set fit() and predict(). See example scripts
such as prediction_models/CatboostPredictionModel.py for guidance.
"""
def return_values(self, dataframe: DataFrame, dk: FreqaiDataKitchen) -> DataFrame:
@ -71,7 +71,8 @@ class BaseRegressionModel(IFreqaiModel):
data_dictionary['train_features'], model, dk, pair)
elif self.freqai_info.get('fit_live_predictions_candles', 0):
dk.fit_live_predictions()
self.dd.save_historic_predictions_to_disk()
self.dd.save_historic_predictions_to_disk()
logger.info(f"--------------------done training {pair}--------------------")

78
freqtrade/freqai/prediction_models/BaseTensorFlowModel.py Normal file
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@ -0,0 +1,78 @@
import logging
from typing import Tuple
from pandas import DataFrame
from freqtrade.freqai.data_kitchen import FreqaiDataKitchen
from freqtrade.freqai.freqai_interface import IFreqaiModel
logger = logging.getLogger(__name__)
class BaseTensorFlowModel(IFreqaiModel):
"""
Base class for TensorFlow type models.
User *must* inherit from this class and set fit() and predict().
"""
def return_values(self, dataframe: DataFrame, dk: FreqaiDataKitchen) -> DataFrame:
"""
User uses this function to add any additional return values to the dataframe.
e.g.
dataframe['volatility'] = dk.volatility_values
"""
return dataframe
def train(
self, unfiltered_dataframe: DataFrame, pair: str, dk: FreqaiDataKitchen
) -> Tuple[DataFrame, DataFrame]:
"""
Filter the training data and train a model to it. Train makes heavy use of the datakitchen
for storing, saving, loading, and analyzing the data.
:params:
:unfiltered_dataframe: Full dataframe for the current training period
:metadata: pair metadata from strategy.
:returns:
:model: Trained model which can be used to inference (self.predict)
"""
logger.info("--------------------Starting training " f"{pair} --------------------")
# filter the features requested by user in the configuration file and elegantly handle NaNs
features_filtered, labels_filtered = dk.filter_features(
unfiltered_dataframe,
dk.training_features_list,
dk.label_list,
training_filter=True,
)
# split data into train/test data.
data_dictionary = dk.make_train_test_datasets(features_filtered, labels_filtered)
if not self.freqai_info.get('fit_live_predictions', 0):
dk.fit_labels()
# normalize all data based on train_dataset only
data_dictionary = dk.normalize_data(data_dictionary)
# optional additional data cleaning/analysis
self.data_cleaning_train(dk)
logger.info(
f'Training model on {len(dk.data_dictionary["train_features"].columns)}' " features"
)
logger.info(f'Training model on {len(data_dictionary["train_features"])} data points')
model = self.fit(data_dictionary)
if pair not in self.dd.historic_predictions:
self.set_initial_historic_predictions(
data_dictionary['train_features'], model, dk, pair)
elif self.freqai_info.get('fit_live_predictions_candles', 0):
dk.fit_live_predictions()
self.dd.save_historic_predictions_to_disk()
logger.info(f"--------------------done training {pair}--------------------")
return model

11
freqtrade/resolvers/freqaimodel_resolver.py
View File

@ -24,8 +24,9 @@ class FreqaiModelResolver(IResolver):
object_type = IFreqaiModel
object_type_str = "FreqaiModel"
user_subdir = USERPATH_FREQAIMODELS
initial_search_path = Path(__file__).parent.parent.joinpath(
"freqai/prediction_models").resolve()
initial_search_path = (
Path(__file__).parent.parent.joinpath("freqai/prediction_models").resolve()
)
@staticmethod
def load_freqaimodel(config: Dict) -> IFreqaiModel:
@ -33,6 +34,7 @@ class FreqaiModelResolver(IResolver):
Load the custom class from config parameter
:param config: configuration dictionary
"""
disallowed_models = ["BaseRegressionModel", "BaseTensorFlowModel"]
freqaimodel_name = config.get("freqaimodel")
if not freqaimodel_name:
@ -40,6 +42,11 @@ class FreqaiModelResolver(IResolver):
"No freqaimodel set. Please use `--freqaimodel` to "
"specify the FreqaiModel class to use.\n"
)
if freqaimodel_name in disallowed_models:
raise OperationalException(
f"{freqaimodel_name} is a baseclass and cannot be used directly. User must choose "
"an existing child class or inherit from this baseclass.\n"
)
freqaimodel = FreqaiModelResolver.load_object(
freqaimodel_name,
config,