the_information_nexus/projects/conda.md

Certainly! Let's combine Dash, deep learning, and price prediction capabilities into a working project. We'll create a web application using Dash that allows users to select a stock symbol, trains an LSTM model on the historical data, and displays the predicted stock prices.

Here's a step-by-step guide to create the project:

Step 1: Set up the environment

1. Make sure you have Miniconda installed and activated.

2. Create a new conda environment for this project:

   conda create --name stock_prediction_app python=3.9
   conda activate stock_prediction_app
   

3. Install the required libraries:

   conda install pandas numpy yfinance scikit-learn tensorflow keras
   conda install -c conda-forge sqlite dash
   

Step 2: Fetch historical stock data

1. Use the fetch_stock_data.py script from the previous example to fetch historical stock data and store it in the SQLite database.

Step 3: Create the Dash application

1. Create a new Python script, e.g., stock_prediction_app.py, and add the following code:

   import dash
   import dash_core_components as dcc
   import dash_html_components as html
   from dash.dependencies import Input, Output
   import pandas as pd
   import sqlite3
   from sklearn.preprocessing import MinMaxScaler
   from tensorflow.keras.models import Sequential
   from tensorflow.keras.layers import LSTM, Dense
   
   app = dash.Dash(__name__)
   
   # Define the layout of the application
   app.layout = html.Div([
       html.H1("Stock Price Prediction"),
       html.Div([
           html.Label("Select Stock Symbol"),
           dcc.Dropdown(
               id="stock-dropdown",
               options=[{"label": "S&P 500", "value": "^GSPC"},
                        {"label": "Dow Jones", "value": "^DJI"},
                        {"label": "Nasdaq", "value": "^IXIC"}],
               value="^GSPC"
           )
       ]),
       html.Div([
           dcc.Graph(id="stock-graph")
       ])
   ])
   
   # Callback to update the graph based on the selected stock symbol
   @app.callback(Output("stock-graph", "figure"),
                 [Input("stock-dropdown", "value")])
   def update_graph(stock_symbol):
       # Load data from SQLite database
       conn = sqlite3.connect("stock_data.db")
       data = pd.read_sql_query(f"SELECT Date, Close FROM {stock_symbol}_prices", conn)
       conn.close()
   
       # Prepare the data for training
       scaler = MinMaxScaler(feature_range=(0, 1))
       scaled_data = scaler.fit_transform(data["Close"].values.reshape(-1, 1))
   
       # Create training data
       lookback = 60
       X, y = [], []
       for i in range(lookback, len(scaled_data)):
           X.append(scaled_data[i - lookback:i, 0])
           y.append(scaled_data[i, 0])
       X, y = np.array(X), np.array(y)
       X = np.reshape(X, (X.shape[0], X.shape[1], 1))
   
       # Build and train the LSTM model
       model = Sequential()
       model.add(LSTM(units=50, return_sequences=True, input_shape=(X.shape[1], 1)))
       model.add(LSTM(units=50))
       model.add(Dense(1))
       model.compile(loss="mean_squared_error", optimizer="adam")
       model.fit(X, y, epochs=10, batch_size=32)
   
       # Make predictions
       last_data = scaled_data[-lookback:]
       X_test = []
       for i in range(lookback, len(last_data)):
           X_test.append(last_data[i - lookback:i, 0])
       X_test = np.array(X_test)
       X_test = np.reshape(X_test, (X_test.shape[0], X_test.shape[1], 1))
       predicted_prices = model.predict(X_test)
       predicted_prices = scaler.inverse_transform(predicted_prices)
   
       # Create the graph figure
       fig = go.Figure()
       fig.add_trace(go.Scatter(x=data["Date"], y=data["Close"], name="Actual Price"))
       fig.add_trace(go.Scatter(x=data["Date"][-len(predicted_prices):], y=predicted_prices.flatten(), name="Predicted Price"))
       fig.update_layout(title=f"{stock_symbol} Stock Price Prediction", xaxis_title="Date", yaxis_title="Price")
   
       return fig
   
   if __name__ == "__main__":
       app.run_server(debug=True)
   

   This script creates a Dash application with a dropdown menu to select a stock symbol and a graph to display the actual and predicted stock prices.

   The app.layout defines the structure of the application, including the dropdown menu and the graph.

   The @app.callback decorator is used to update the graph based on the selected stock symbol. It loads the data from the SQLite database, prepares the data for training, builds and trains the LSTM model, makes predictions, and creates the graph figure using the Plotly library.

2. Run the script to start the Dash application:

   python stock_prediction_app.py
   

   The application will start running on a local server, and you can access it in your web browser at http://localhost:8050.

3. Select a stock symbol from the dropdown menu to see the actual and predicted stock prices on the graph.

That's it! You now have a working project that combines Dash, deep learning, and price prediction capabilities. Users can select a stock symbol, and the application will train an LSTM model on the historical data and display the predicted stock prices alongside the actual prices.

This project serves as a starting point, and you can further enhance it by adding more features, improving the model architecture, and incorporating additional data preprocessing techniques.

Remember to handle any errors or exceptions that may occur during data loading, model training, or prediction.

Feel free to explore and customize the application based on your specific requirements and preferences!