Files
OpenBB/prediction_techniques/neural_networks.py
2021-02-20 19:36:59 +00:00

349 lines
18 KiB
Python

import argparse
from helper_funcs import *
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
from pandas.plotting import register_matplotlib_converters
register_matplotlib_converters()
from TimeSeriesCrossValidation import splitTrain
from sklearn.preprocessing import MinMaxScaler, StandardScaler
from tensorflow.keras.models import Sequential
from tensorflow.keras.layers import LSTM, SimpleRNN, Dense, Dropout, Activation, RepeatVector, TimeDistributed
import config_neural_network_models as cfg_nn_models
import os
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2'
from warnings import simplefilter
simplefilter(action='ignore', category=FutureWarning)
# ----------------------------------------------------------------------------------------------------
def build_neural_network_model(Recurrent_Neural_Network, n_inputs, n_days):
model = Sequential()
for idx_layer, d_layer in enumerate(Recurrent_Neural_Network):
# Recurrent Neural Network
if str(*d_layer) is 'SimpleRNN':
# Is this the input layer? If so, define input_shape
if idx_layer == 0:
model.add(SimpleRNN(**d_layer['SimpleRNN'], input_shape=(n_inputs, 1)))
# Is this the last output layer? If so, set units to prediction days
elif idx_layer == (len(Recurrent_Neural_Network)-1):
model.add(SimpleRNN(**d_layer['SimpleRNN'], units=n_days))
else:
model.add(SimpleRNN(**d_layer['SimpleRNN']))
# Long-Short Term-Memory
elif str(*d_layer) is 'LSTM':
# Is this the input layer? If so, define input_shape
if idx_layer == 0:
model.add(LSTM(**d_layer['LSTM'], input_shape=(n_inputs, 1)))
# Is this the last output layer? If so, set units to prediction days
elif idx_layer == (len(Recurrent_Neural_Network)-1):
model.add(LSTM(**d_layer['LSTM'], units=n_days))
else:
model.add(LSTM(**d_layer['LSTM']))
# Dense (Simple Neuron)
elif str(*d_layer) is 'Dense':
# Is this the input layer? If so, define input_shape
if idx_layer == 0:
model.add(Dense(**d_layer['Dense'], input_dim=n_inputs))
# Is this the last output layer? If so, set units to prediction days
elif idx_layer == (len(Recurrent_Neural_Network)-1):
model.add(Dense(**d_layer['Dense'], units=n_days))
else:
model.add(Dense(**d_layer['Dense']))
# Dropout (Regularization)
elif str(*d_layer) is 'Dropout':
model.add(Dropout(**d_layer['Dropout']))
else:
print(f"Incorrect neuron type: {str(*d_layer)}")
return model
# -------------------------------------------------- MLP --------------------------------------------------
def mlp(l_args, s_ticker, s_interval, df_stock):
parser = argparse.ArgumentParser(prog='mlp',
description="""Multilayer Perceptron. """)
parser.add_argument('-d', "--days", action="store", dest="n_days", type=check_positive, default=5,
help='prediction days.')
parser.add_argument('-i', "--input", action="store", dest="n_inputs", type=check_positive, default=40,
help='number of days to use for prediction.')
parser.add_argument('-e', "--epochs", action="store", dest="n_epochs", type=check_positive, default=200,
help='number of training epochs.')
parser.add_argument('-j', "--jumps", action="store", dest="n_jumps", type=check_positive, default=1,
help='number of jumps in training data.')
parser.add_argument('-p', "--pp", action="store", dest="s_preprocessing", default='normalization',
choices=['normalization', 'standardization', 'none'], help='pre-processing data.')
parser.add_argument('-o', "--optimizer", action="store", dest="s_optimizer", default='adam',
choices=['adam', 'adagrad', 'adadelta', 'adamax', 'ftrl', 'nadam', 'optimizer', 'rmsprop', 'sgd'], help='optimization technique.')
parser.add_argument('-l', "--loss", action="store", dest="s_loss", default='mae',
choices=['mae', 'mape', 'mse', 'msle'], help='loss function.')
try:
(ns_parser, l_unknown_args) = parser.parse_known_args(l_args)
if l_unknown_args:
print(f"The following args couldn't be interpreted: {l_unknown_args}\n")
return
# Pre-process data
if ns_parser.s_preprocessing == 'standardization':
scaler = StandardScaler()
stock_train_data = scaler.fit_transform(np.array(df_stock['5. adjusted close'].values.reshape(-1, 1)))
elif ns_parser.s_preprocessing == 'normalization':
scaler = MinMaxScaler()
stock_train_data = scaler.fit_transform(np.array(df_stock['5. adjusted close'].values.reshape(-1, 1)))
else: # No pre-processing
stock_train_data = np.array(df_stock['5. adjusted close'].values.reshape(-1, 1))
# Split training data for the neural network
stock_x, stock_y = splitTrain.split_train(stock_train_data, ns_parser.n_inputs, ns_parser.n_days, numJumps=ns_parser.n_jumps)
stock_x = np.array(stock_x)
stock_x = np.reshape(stock_x, (stock_x.shape[0], stock_x.shape[1]))
stock_y = np.array(stock_y)
stock_y = np.reshape(stock_y, (stock_y.shape[0], stock_y.shape[1]))
# Build Neural Network model
model = build_neural_network_model(cfg_nn_models.MultiLayer_Perceptron, ns_parser.n_inputs, ns_parser.n_days)
model.compile(optimizer=ns_parser.s_optimizer, loss=ns_parser.s_loss)
# Train our model
model.fit(stock_x, stock_y, epochs=ns_parser.n_epochs, verbose=1);
print("")
print(model.summary())
print("")
# Prediction
yhat = model.predict(stock_train_data[-ns_parser.n_inputs:].reshape(1, ns_parser.n_inputs), verbose=0)
# Re-scale the data back
if (ns_parser.s_preprocessing == 'standardization') or (ns_parser.s_preprocessing == 'normalization'):
y_pred_test_t = scaler.inverse_transform(yhat.tolist())
else:
y_pred_test_t = yhat
l_pred_days = get_next_stock_market_days(last_stock_day=df_stock['5. adjusted close'].index[-1], n_next_days=ns_parser.n_days)
df_pred = pd.Series(y_pred_test_t[0].tolist(), index=l_pred_days, name='Price')
# Plotting
plt.plot(df_stock.index, df_stock['5. adjusted close'], lw=3)
plt.title(f"MLP on {s_ticker} - {ns_parser.n_days} days prediction")
plt.xlim(df_stock.index[0], get_next_stock_market_days(df_pred.index[-1], 1)[-1])
plt.xlabel('Time')
plt.ylabel('Share Price ($)')
plt.grid(b=True, which='major', color='#666666', linestyle='-')
plt.minorticks_on()
plt.grid(b=True, which='minor', color='#999999', linestyle='-', alpha=0.2)
plt.plot([df_stock.index[-1], df_pred.index[0]], [df_stock['5. adjusted close'].values[-1], df_pred.values[0]], lw=1, c='tab:green', linestyle='--')
plt.plot(df_pred.index, df_pred, lw=2, c='tab:green')
plt.axvspan(df_stock.index[-1], df_pred.index[-1], facecolor='tab:orange', alpha=0.2)
xmin, xmax, ymin, ymax = plt.axis()
plt.vlines(df_stock.index[-1], ymin, ymax, colors='k', linewidth=3, linestyle='--', color='k')
plt.show()
# Print prediction data
print("Predicted share price:")
df_pred = df_pred.apply(lambda x: f"{x:.2f} $")
print(df_pred.to_string())
print("")
except:
print("")
# -------------------------------------------------- RNN --------------------------------------------------
def rnn(l_args, s_ticker, s_interval, df_stock):
parser = argparse.ArgumentParser(prog='rnn',
description="""Recurrent Neural Network. """)
parser.add_argument('-d', "--days", action="store", dest="n_days", type=check_positive, default=5,
help='prediction days.')
parser.add_argument('-i', "--input", action="store", dest="n_inputs", type=check_positive, default=40,
help='number of days to use for prediction.')
parser.add_argument('-e', "--epochs", action="store", dest="n_epochs", type=check_positive, default=200,
help='number of training epochs.')
parser.add_argument('-j', "--jumps", action="store", dest="n_jumps", type=check_positive, default=1,
help='number of jumps in training data.')
parser.add_argument('-p', "--pp", action="store", dest="s_preprocessing", default='normalization',
choices=['normalization', 'standardization', 'none'], help='pre-processing data.')
parser.add_argument('-o', "--optimizer", action="store", dest="s_optimizer", default='adam', help='optimizer technique',
choices=['adam', 'adagrad', 'adadelta', 'adamax', 'ftrl', 'nadam', 'optimizer', 'rmsprop', 'sgd'])
parser.add_argument('-l', "--loss", action="store", dest="s_loss", default='mae',
choices=['mae', 'mape', 'mse', 'msle'], help='loss function.')
try:
(ns_parser, l_unknown_args) = parser.parse_known_args(l_args)
if l_unknown_args:
print(f"The following args couldn't be interpreted: {l_unknown_args}\n")
return
# Pre-process data
if ns_parser.s_preprocessing == 'standardization':
scaler = StandardScaler()
stock_train_data = scaler.fit_transform(np.array(df_stock['5. adjusted close'].values.reshape(-1, 1)))
elif ns_parser.s_preprocessing == 'normalization':
scaler = MinMaxScaler()
stock_train_data = scaler.fit_transform(np.array(df_stock['5. adjusted close'].values.reshape(-1, 1)))
else: # No pre-processing
stock_train_data = np.array(df_stock['5. adjusted close'].values.reshape(-1, 1))
# Split training data for the neural network
stock_x, stock_y = splitTrain.split_train(stock_train_data, ns_parser.n_inputs, ns_parser.n_days, numJumps=ns_parser.n_jumps)
stock_x = np.array(stock_x)
stock_x = np.reshape(stock_x, (stock_x.shape[0], stock_x.shape[1], 1))
stock_y = np.array(stock_y)
stock_y = np.reshape(stock_y, (stock_y.shape[0], stock_y.shape[1], 1))
# Build Neural Network model
model = build_neural_network_model(cfg_nn_models.Recurrent_Neural_Network, ns_parser.n_inputs, ns_parser.n_days)
model.compile(optimizer=ns_parser.s_optimizer, loss=ns_parser.s_loss)
# Train our model
model.fit(stock_x, stock_y, epochs=ns_parser.n_epochs, verbose=1);
print("")
print(model.summary())
print("")
# Prediction
yhat = model.predict(stock_train_data[-ns_parser.n_inputs:].reshape(1, ns_parser.n_inputs, 1), verbose=0)
# Re-scale the data back
if (ns_parser.s_preprocessing == 'standardization') or (ns_parser.s_preprocessing == 'normalization'):
y_pred_test_t = scaler.inverse_transform(yhat.tolist())
else:
y_pred_test_t = yhat
l_pred_days = get_next_stock_market_days(last_stock_day=df_stock['5. adjusted close'].index[-1], n_next_days=ns_parser.n_days)
df_pred = pd.Series(y_pred_test_t[0].tolist(), index=l_pred_days, name='Price')
# Plotting
plt.plot(df_stock.index, df_stock['5. adjusted close'], lw=3)
plt.title(f"RNN on {s_ticker} - {ns_parser.n_days} days prediction")
plt.xlim(df_stock.index[0], get_next_stock_market_days(df_pred.index[-1], 1)[-1])
plt.xlabel('Time')
plt.ylabel('Share Price ($)')
plt.grid(b=True, which='major', color='#666666', linestyle='-')
plt.minorticks_on()
plt.grid(b=True, which='minor', color='#999999', linestyle='-', alpha=0.2)
plt.plot([df_stock.index[-1], df_pred.index[0]], [df_stock['5. adjusted close'].values[-1], df_pred.values[0]], lw=1, c='tab:green', linestyle='--')
plt.plot(df_pred.index, df_pred, lw=2, c='tab:green')
plt.axvspan(df_stock.index[-1], df_pred.index[-1], facecolor='tab:orange', alpha=0.2)
xmin, xmax, ymin, ymax = plt.axis()
plt.vlines(df_stock.index[-1], ymin, ymax, colors='k', linewidth=3, linestyle='--', color='k')
plt.show()
# Print prediction data
print("Predicted share price:")
df_pred = df_pred.apply(lambda x: f"{x:.2f} $")
print(df_pred.to_string())
print("")
except:
print("")
# -------------------------------------------------- LSTM --------------------------------------------------
def lstm(l_args, s_ticker, s_interval, df_stock):
parser = argparse.ArgumentParser(prog='lstm',
description="""Long-Short Term Memory. """)
parser.add_argument('-d', "--days", action="store", dest="n_days", type=check_positive, default=5,
help='prediction days')
parser.add_argument('-i', "--input", action="store", dest="n_inputs", type=check_positive, default=40,
help='number of days to use for prediction.')
parser.add_argument('-e', "--epochs", action="store", dest="n_epochs", type=check_positive, default=200,
help='number of training epochs.')
parser.add_argument('-j', "--jumps", action="store", dest="n_jumps", type=check_positive, default=1,
help='number of jumps in training data.')
parser.add_argument('-p', "--pp", action="store", dest="s_preprocessing", default='normalization',
choices=['normalization', 'standardization', 'none'], help='pre-processing data.')
parser.add_argument('-o', "--optimizer", action="store", dest="s_optimizer", default='adam', help='optimization technique.',
choices=['adam', 'adagrad', 'adadelta', 'adamax', 'ftrl', 'nadam', 'optimizer', 'rmsprop', 'sgd'])
parser.add_argument('-l', "--loss", action="store", dest="s_loss", default='mae',
choices=['mae', 'mape', 'mse', 'msle'], help='loss function.')
try:
(ns_parser, l_unknown_args) = parser.parse_known_args(l_args)
if l_unknown_args:
print(f"The following args couldn't be interpreted: {l_unknown_args}\n")
return
# Pre-process data
if ns_parser.s_preprocessing == 'standardization':
scaler = StandardScaler()
stock_train_data = scaler.fit_transform(np.array(df_stock['5. adjusted close'].values.reshape(-1, 1)))
elif ns_parser.s_preprocessing == 'normalization':
scaler = MinMaxScaler()
stock_train_data = scaler.fit_transform(np.array(df_stock['5. adjusted close'].values.reshape(-1, 1)))
else: # No pre-processing
stock_train_data = np.array(df_stock['5. adjusted close'].values.reshape(-1, 1))
# Split training data for the neural network
stock_x, stock_y = splitTrain.split_train(stock_train_data, ns_parser.n_inputs, ns_parser.n_days, numJumps=ns_parser.n_jumps)
stock_x = np.array(stock_x)
stock_x = np.reshape(stock_x, (stock_x.shape[0], stock_x.shape[1], 1))
stock_y = np.array(stock_y)
stock_y = np.reshape(stock_y, (stock_y.shape[0], stock_y.shape[1], 1))
# Build Neural Network model
model = build_neural_network_model(cfg_nn_models.Long_Short_Term_Memory, ns_parser.n_inputs, ns_parser.n_days)
model.compile(optimizer=ns_parser.s_optimizer, loss=ns_parser.s_loss)
# Train our model
model.fit(stock_x, stock_y, epochs=ns_parser.n_epochs, verbose=1);
print("")
print(model.summary())
print("")
# Prediction
yhat = model.predict(stock_train_data[-ns_parser.n_inputs:].reshape(1, ns_parser.n_inputs, 1), verbose=0)
# Re-scale the data back
if (ns_parser.s_preprocessing == 'standardization') or (ns_parser.s_preprocessing == 'normalization'):
y_pred_test_t = scaler.inverse_transform(yhat.tolist())
else:
y_pred_test_t = yhat
l_pred_days = get_next_stock_market_days(last_stock_day=df_stock['5. adjusted close'].index[-1], n_next_days=ns_parser.n_days)
df_pred = pd.Series(y_pred_test_t[0].tolist(), index=l_pred_days, name='Price')
# Plotting
plt.plot(df_stock.index, df_stock['5. adjusted close'], lw=3)
plt.title(f"LSTM on {s_ticker} - {ns_parser.n_days} days prediction")
plt.xlim(df_stock.index[0], get_next_stock_market_days(df_pred.index[-1], 1)[-1])
plt.xlabel('Time')
plt.ylabel('Share Price ($)')
plt.grid(b=True, which='major', color='#666666', linestyle='-')
plt.minorticks_on()
plt.grid(b=True, which='minor', color='#999999', linestyle='-', alpha=0.2)
plt.plot([df_stock.index[-1], df_pred.index[0]], [df_stock['5. adjusted close'].values[-1], df_pred.values[0]], lw=1, c='tab:green', linestyle='--')
plt.plot(df_pred.index, df_pred, lw=2, c='tab:green')
plt.axvspan(df_stock.index[-1], df_pred.index[-1], facecolor='tab:orange', alpha=0.2)
xmin, xmax, ymin, ymax = plt.axis()
plt.vlines(df_stock.index[-1], ymin, ymax, colors='k', linewidth=3, linestyle='--', color='k')
plt.show()
# Print prediction data
print("Predicted share price:")
df_pred = df_pred.apply(lambda x: f"{x:.2f} $")
print(df_pred.to_string())
print("")
except:
print("")