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import streamlit as st
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import streamlit as st
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st.header("🚗 Brake System Fault Detection")
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feature_desc = {
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'Brake_Pressure': "Pressure applied to the brake pedal.",
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'Pad_Wear_Level': "Indicates the wear level of brake pads.",
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'ABS_Status': "1 if Anti-lock Braking System is active, else 0.",
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'Wheel_Speed_FL': "Speed of the front-left wheel.",
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'Wheel_Speed_FR': "Speed of the front-right wheel.",
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'Wheel_Speed_RL': "Speed of the rear-left wheel.",
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'Wheel_Speed_RR': "Speed of the rear-right wheel.",
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'Fluid_Temperature': "Temperature of the brake fluid.",
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'Pedal_Position': "How far the brake pedal is pressed."
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}
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selected = st.selectbox("Select a feature to understand:", list(feature_desc.keys()))
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st.info(f"📘 **{selected}**: {feature_desc[selected]}")
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st.markdown("### 🎯 Goal")
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st.markdown("""
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Build a data-driven model that detects braking system faults using sensor data such as brake pressure, wheel speeds, fluid temperature, and pedal position.
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""")
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st.markdown("### 📌 Business Objective")
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st.markdown("""
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- Detect faults early to reduce vehicle failure risks.
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- Analyze sensor behavior during fault vs non-fault conditions.
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- Support preventive maintenance using historical data patterns.
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""")
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st.markdown("### 📊 Data Understanding")
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st.markdown("""
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The dataset contains **real-time sensor readings** collected from a vehicle's braking system to detect faults. Below are the details of each feature:
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#### 🔢 Numerical Features:
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- **Brake_Pressure**: Pressure applied to the braking system (in bar or psi).
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- **Pad_Wear_Level**: Indicates how much the brake pads have worn down (in % or mm).
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- **Wheel_Speed_FL**: Speed of the **front-left** wheel (in km/h).
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- **Wheel_Speed_FR**: Speed of the **front-right** wheel (in km/h).
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- **Wheel_Speed_RL**: Speed of the **rear-left** wheel (in km/h).
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- **Wheel_Speed_RR**: Speed of the **rear-right** wheel (in km/h).
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- **Fluid_Temperature**: Temperature of the brake fluid (in °C).
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- **Pedal_Position**: Position of the brake pedal, indicating how far it is pressed (0–100%).
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#### 🔠 Categorical Feature:
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- **ABS_Status**: Anti-lock Braking System status —
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- `1`: Active
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- `0`: Inactive
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#### 🎯 Target Variable:
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- **Fault**:
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- `0`: Normal (No issue detected)
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- `1`: Fault Detected (Brake system problem)
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""")
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