In this course, we will explore the process of building an automated trading system for Bitcoin using deep learning and machine learning. In particular, we will explain in detail the importance of hyperparameter tuning for maximizing performance and the methods to achieve this. We will provide an introduction to the data and machine learning models we will use, along with practical code examples of hyperparameter tuning techniques.
1. Overview of the Bitcoin Automated Trading System
An automated trading system is an algorithm used to trade assets such as stocks and cryptocurrencies. These systems make decisions through data analysis, pattern recognition, and predictive modeling. Because Bitcoin is particularly volatile, machine learning and deep learning models can effectively automate trading.
2. Importance of Hyperparameter Tuning
Hyperparameters are parameters that must be set during the training process of machine learning models. These include learning rate, batch size, regularization coefficient, and more, and the model’s performance can vary significantly based on these values. Finding the appropriate hyperparameters is one of the most critical parts of improving a model.
3. Hyperparameter Tuning Techniques
There are several methods for hyperparameter tuning. Here, we will introduce two representative methods: Grid Search and Random Search.
3.1 Grid Search
Grid Search is a method that searches all combinations of predefined hyperparameter values to find the optimal combination. This method is straightforward but can be computationally expensive.
from sklearn.model_selection import GridSearchCV
from sklearn.ensemble import RandomForestClassifier
# Hyperparameter grid
param_grid = {
'n_estimators': [10, 50, 100],
'max_features': ['auto', 'sqrt', 'log2'],
'max_depth': [None, 10, 20, 30],
}
grid_search = GridSearchCV(estimator=RandomForestClassifier(), param_grid=param_grid, cv=3)
grid_search.fit(X_train, y_train)
best_params = grid_search.best_params_
3.2 Random Search
Random Search is a method that selects random combinations from the hyperparameter space to evaluate performance. It can find the optimal combination faster than Grid Search, but there is no theoretical guarantee of finding the appropriate combinations.
from sklearn.model_selection import RandomizedSearchCV
from scipy.stats import randint
# Hyperparameter distribution
param_dist = {
'n_estimators': randint(10, 200),
'max_features': ['auto', 'sqrt', 'log2'],
'max_depth': [None] + list(range(10, 31)),
}
random_search = RandomizedSearchCV(estimator=RandomForestClassifier(), param_distributions=param_dist, n_iter=100, cv=3)
random_search.fit(X_train, y_train)
best_params = random_search.best_params_
4. Building the Bitcoin Automated Trading Model
This time, we will collect Bitcoin price data and build a deep learning model for automated trading based on this data, along with an example of hyperparameter tuning.
4.1 Data Collection
Bitcoin price data can be collected through various data service providers via APIs. For example, data can be obtained through the Binance API.
import pandas as pd
import requests
def get_bitcoin_data():
url = 'https://api.binance.com/api/v3/klines?symbol=BTCUSDT&interval=1d&limit=100'
response = requests.get(url)
data = response.json()
df = pd.DataFrame(data, columns=['Open time', 'Open', 'High', 'Low', 'Close', 'Volume', 'Close time', 'Quote asset volume', 'Number of trades', 'Taker buy base asset volume', 'Taker buy quote asset volume', 'Ignore'])
df['Close'] = df['Close'].astype(float)
df['Open time'] = pd.to_datetime(df['Open time'], unit='ms')
return df[['Open time', 'Close']]
bitcoin_data = get_bitcoin_data()
4.2 Data Preprocessing
Preprocessing is required for the collected data. This includes handling missing values, scaling, and splitting the data into training and testing sets.
from sklearn.preprocessing import MinMaxScaler
from sklearn.model_selection import train_test_split
# Data preprocessing
scaler = MinMaxScaler()
bitcoin_data['Close'] = scaler.fit_transform(bitcoin_data['Close'].values.reshape(-1, 1))
X = bitcoin_data['Close'].shift(1).dropna().values.reshape(-1, 1)
y = bitcoin_data['Close'].iloc[1:].values
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
4.3 Model Building
We will use an LSTM (Long Short-Term Memory) deep learning model to build a Bitcoin price prediction model.
from keras.models import Sequential
from keras.layers import LSTM, Dense, Dropout
model = Sequential()
model.add(LSTM(units=50, return_sequences=True, input_shape=(1, 1)))
model.add(Dropout(0.2))
model.add(LSTM(units=50))
model.add(Dropout(0.2))
model.add(Dense(units=1))
model.compile(optimizer='adam', loss='mean_squared_error')
4.4 Model Training
Hyperparameter tuning is necessary to train the model. The following is an example of adjusting the learning rate and batch size.
from keras.callbacks import EarlyStopping
early_stopping = EarlyStopping(monitor='loss', patience=3)
model.fit(X_train.reshape((X_train.shape[0], 1, 1)), y_train, epochs=100, batch_size=1, callbacks=[early_stopping])
4.5 Prediction and Evaluation
We perform predictions on the test data using the trained model and evaluate them.
import numpy as np
predicted_prices = model.predict(X_test.reshape((X_test.shape[0], 1, 1)))
predicted_prices = scaler.inverse_transform(predicted_prices)
# Model evaluation
from sklearn.metrics import mean_squared_error
mse = mean_squared_error(y_test, predicted_prices)
print('Mean Squared Error:', mse)
5. Conclusion
In this article, we have explored the process of building a Bitcoin automated trading system using deep learning and machine learning, detailing the importance of hyperparameter tuning and the methods to achieve it. By tuning hyperparameters, we can enhance the model’s performance, significantly increasing the efficiency of the Bitcoin automated trading system.
6. Additional Resources
For more information and resources on hyperparameter tuning, please refer to the following links: