尝试使用 Tensorflow 在神经网络中为单个预测结果提供多个输入

问：

import numpy as np
import matplotlib.pyplot as plt
import pandas as pd
import pandas_datareader as web
import datetime as dt
import yfinance as yf

from sklearn.preprocessing import MinMaxScaler
from tensorflow.keras.models import Sequential
from tensorflow.keras.layers import Dense, Dropout, LSTM

# Load Data
company = 'TSLA'
start = dt.datetime(2012, 1, 1)
end = dt.datetime(2020, 1, 1)

data = yf.download(company, start=start, end=end)

# Add additional data points
data['Volume_MA10'] = data['Volume'].rolling(window=10).mean()
data['Volume_MA5'] = data['Volume'].rolling(window=10).mean()

# Drop rows with NaN values after adding the moving average column
data.dropna(inplace=True)

# Scale the data
scaler = MinMaxScaler(feature_range=(0, 1))
scaled_data = scaler.fit_transform(data[['Close', 'Volume', 'Volume_MA10', 'Volume_MA5']])

prediction_days = 60

x_train = []
y_train = []

for x in range(prediction_days, len(scaled_data)):
    x_train.append(scaled_data[x - prediction_days:x, :])
    y_train.append(scaled_data[x, 0])

x_train, y_train = np.array(x_train), np.array(y_train)
x_train = np.reshape(x_train, (x_train.shape[0], x_train.shape[1], x_train.shape[2]))

model = Sequential()
model.add(LSTM(units=50, return_sequences=True, input_shape=(x_train.shape[1], x_train.shape[2])))
model.add(Dropout(0.2))
model.add(LSTM(units=50, return_sequences=True))
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')
model.fit(x_train, y_train, epochs=25, batch_size=32)

这一切似乎都很好，但是当我测试以下内容时：

# Test the model accuracy on existing data
# Load Test Data
test_start = dt.datetime(2020, 1, 1)
test_end = dt.datetime(2023, 10, 30)

test_data = yf.download(company, start=test_start, end=test_end)

actual_prices = test_data['Close'].values

total_dataset = pd.concat((data['Close'], test_data['Close']), axis=0)
total_dataset = pd.concat((total_dataset, data['Volume'], data['Volume_MA10'], data['Volume_Binary']), axis=1)

model_inputs = total_dataset[len(total_dataset) - len(test_data) - prediction_days:].values
model_inputs = model_inputs.reshape(-1, 4)  # Reshape to include all four data points

# Fit scaler with all four features
scaler = MinMaxScaler(feature_range=(0, 1))
model_inputs = scaler.fit_transform(model_inputs)

# Make Predictions on Test Data
x_test = []

for x in range(prediction_days, len(model_inputs)):
    x_test.append(model_inputs[x - prediction_days:x, :])

x_test = np.array(x_test)
x_test = np.reshape(x_test, (x_test.shape[0], x_test.shape[1], x_test.shape[2]))


predicted_prices = model.predict(x_test)

# Perform inverse scaling on the predicted prices
predicted_prices = scaler.inverse_transform(predicted_prices)

# Extract the 'Close' column from the predicted prices
predicted_prices = predicted_prices[:, 0]

# Plot the Test Predictions
plt.plot(actual_prices, color='black', label='Actual Prices')
plt.plot(range(prediction_days, prediction_days + len(predicted_prices)), predicted_prices, color='green', label='Predicted Prices')
plt.xlabel('Time')
plt.ylabel('Price')
plt.legend()
plt.show()

我收到以下错误：

ValueError 回溯（最近一次调用最后一次） 在<细胞系中：33>（） 31 32 # 对预测价格进行反向缩放 ---> 33 predicted_prices = scaler.inverse_transform（predicted_prices） 34 35 # 从预测价格中提取“收盘价”列

/usr/local/lib/python3.10/dist-packages/sklearn/preprocessing/data.py in inverse_transform（self， X） 539 ) 540 --> 541 X -= self.min 542 X /= self.scale_ 543返回X

ValueError：形状为 （963,1） 的不可广播输出操作数与广播形状 （963,4） 不匹配