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19
README.md
19
README.md
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# Credit Card Fraud Detection API
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## Problem Statement
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This project aims to predict whether a credit card transaction is fraudulent or legitimate in real-time. It provides a web interface to submit transaction data and receive a fraud probability score.
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## Dataset
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The model will be trained on the [Kaggle Credit Card Fraud Dataset](https://www.kaggle.com/datasets/mlg-ulb/creditcardfraud).
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## Model
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The initial implementation uses a Logistic Regression model as a baseline.
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## API Usage
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* `/predict`: POST endpoint that accepts transaction data and returns a fraud probability.
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* `/health`: GET endpoint to check service status.
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## Future Improvements
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- Implement more advanced models (Random Forest, XGBoost).
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- Add user authentication.
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- Deploy to a cloud environment.
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@ -1,172 +0,0 @@
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/* General Body & Theme Variables */
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:root {
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--primary-color: #0d6efd;
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--background-color: #f8f9fa;
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--card-bg: #ffffff;
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--text-color: #212529;
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--border-color: #dee2e6;
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--muted-text-color: #6c757d;
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--hero-gradient: linear-gradient(45deg, #0d6efd, #6c757d);
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--navbar-bg: #343a40;
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}
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[data-theme="dark"] {
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--primary-color: #4dabf7;
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--background-color: #121212;
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--card-bg: #1e1e1e;
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--text-color: #e9ecef;
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--border-color: #495057;
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--muted-text-color: #adb5bd;
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--hero-gradient: linear-gradient(45deg, #1f3a93, #343a40);
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--navbar-bg: #1e1e1e;
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}
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body {
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||||||
background-color: var(--background-color);
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color: var(--text-color);
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transition: background-color 0.3s ease, color 0.3s ease;
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}
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/* Animations */
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@keyframes fadeInUp {
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from {
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opacity: 0;
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transform: translateY(20px);
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}
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to {
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opacity: 1;
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transform: translateY(0);
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}
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}
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.animated {
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animation-duration: 0.8s;
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animation-fill-mode: both;
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animation-name: fadeInUp;
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}
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/* Navbar */
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.navbar {
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background-color: var(--navbar-bg) !important;
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border-bottom: 1px solid var(--border-color);
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transition: background-color 0.3s ease;
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}
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/* Theme Switcher */
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.theme-switcher {
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display: flex;
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align-items: center;
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}
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.theme-switcher .form-check-input {
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width: 40px;
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height: 20px;
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background-color: #555;
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border: none;
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cursor: pointer;
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position: relative;
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transition: background-color 0.3s ease;
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}
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.theme-switcher .form-check-input:checked {
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background-color: var(--primary-color);
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}
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.theme-switcher .theme-icon {
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margin-left: 8px;
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color: #ffc107;
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transition: color 0.3s ease;
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}
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/* Hero Section */
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.hero {
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background: var(--hero-gradient);
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color: white;
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padding: 4rem 2rem;
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margin-bottom: 2rem;
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border-radius: 0.5rem;
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text-align: center;
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animation-delay: 0.2s;
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}
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/* Card Styling */
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.card {
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background-color: var(--card-bg);
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border: 1px solid var(--border-color);
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border-radius: 0.5rem;
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transition: background-color 0.3s ease, border-color 0.3s ease;
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animation-delay: 0.4s;
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}
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.card-header {
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background-color: transparent;
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border-bottom: 1px solid var(--border-color);
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padding: 1rem 1.25rem;
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}
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.card-header h5 {
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color: var(--text-color);
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}
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.form-label {
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color: var(--muted-text-color);
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}
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.form-control {
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background-color: var(--background-color);
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color: var(--text-color);
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border: 1px solid var(--border-color);
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}
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.form-control:focus {
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background-color: var(--background-color);
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color: var(--text-color);
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border-color: var(--primary-color);
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box-shadow: 0 0 0 0.25rem rgba(var(--primary-color), 0.25);
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||||||
}
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||||||
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||||||
/* Buttons */
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||||||
.btn-primary {
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||||||
background-color: var(--primary-color);
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border-color: var(--primary-color);
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transition: background-color 0.2s ease, transform 0.2s ease;
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}
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.btn-primary:hover {
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transform: translateY(-2px);
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box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
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||||||
}
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||||||
/* Result Card */
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||||||
#result-card {
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transition: opacity 0.5s ease-in-out, transform 0.5s ease;
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border-width: 2px;
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||||||
}
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.result-good {
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color: #28a745;
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||||||
}
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||||||
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.result-bad {
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color: #dc3545;
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||||||
}
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||||||
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||||||
#result-card.result-good {
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border-color: #28a745;
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}
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||||||
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#result-card.result-bad {
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border-color: #dc3545;
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}
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.result-value {
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font-size: 2.5rem;
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font-weight: bold;
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||||||
}
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/* Footer */
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footer {
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color: var(--muted-text-color);
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}
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@ -1,74 +0,0 @@
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document.addEventListener('DOMContentLoaded', function () {
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// --- Theme Switcher --- //
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const themeSwitch = document.getElementById('theme-switch');
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const themeIcon = document.querySelector('.theme-icon');
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||||||
const currentTheme = localStorage.getItem('theme') || 'light';
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||||||
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document.documentElement.setAttribute('data-theme', currentTheme);
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||||||
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||||||
if (currentTheme === 'dark') {
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||||||
themeSwitch.checked = true;
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||||||
themeIcon.classList.remove('fa-moon');
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||||||
themeIcon.classList.add('fa-sun');
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} else {
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||||||
themeIcon.classList.remove('fa-sun');
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||||||
themeIcon.classList.add('fa-moon');
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||||||
}
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||||||
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themeSwitch.addEventListener('change', function(e) {
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||||||
if (e.target.checked) {
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||||||
document.documentElement.setAttribute('data-theme', 'dark');
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||||||
localStorage.setItem('theme', 'dark');
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||||||
themeIcon.classList.remove('fa-moon');
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||||||
themeIcon.classList.add('fa-sun');
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} else {
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document.documentElement.setAttribute('data-theme', 'light');
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||||||
localStorage.setItem('theme', 'light');
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||||||
themeIcon.classList.remove('fa-sun');
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||||||
themeIcon.classList.add('fa-moon');
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||||||
}
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||||||
});
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||||||
|
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||||||
// --- Prediction Form --- //
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const predictionForm = document.getElementById('prediction-form');
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const resultCard = document.getElementById('result-card');
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||||||
const resultMessage = document.getElementById('result-message');
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||||||
const resultValue = document.getElementById('result-value');
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predictionForm.addEventListener('submit', function (e) {
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e.preventDefault();
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// Mocking the API call for demonstration
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const mockProbability = Math.random();
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displayResult(mockProbability);
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});
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function displayResult(probability) {
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const isFraud = probability > 0.5; // Example threshold: tune this based on your model's ROC curve
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resultValue.textContent = `${(probability * 100).toFixed(2)}%`;
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resultCard.classList.remove('result-good', 'result-bad');
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if (isFraud) {
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resultMessage.textContent = 'High Probability of Fraud';
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resultValue.classList.remove('result-good');
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resultValue.classList.add('result-bad');
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resultCard.classList.add('result-bad');
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} else {
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resultMessage.textContent = 'Low Probability of Fraud';
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resultValue.classList.remove('result-bad');
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resultValue.classList.add('result-good');
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resultCard.classList.add('result-good');
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||||||
}
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||||||
|
|
||||||
// Show the result card with a smooth animation
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||||||
resultCard.style.display = 'block';
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||||||
resultCard.style.transform = 'translateY(20px)';
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||||||
setTimeout(() => {
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||||||
resultCard.style.opacity = 1;
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||||||
resultCard.style.transform = 'translateY(0)';
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||||||
}, 10); // A small delay to ensure the display property is applied first
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}
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});
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224
index.php
224
index.php
@ -1,90 +1,150 @@
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<!DOCTYPE html>
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<?php
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<html lang="en" data-theme="light">
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declare(strict_types=1);
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@ini_set('display_errors', '1');
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||||||
|
@error_reporting(E_ALL);
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||||||
|
@date_default_timezone_set('UTC');
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||||||
|
$phpVersion = PHP_VERSION;
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||||||
|
$now = date('Y-m-d H:i:s');
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||||||
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?>
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||||||
|
<!doctype html>
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||||||
|
<html lang="en">
|
||||||
<head>
|
<head>
|
||||||
<meta charset="UTF-8">
|
<meta charset="utf-8" />
|
||||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
<meta name="viewport" content="width=device-width, initial-scale=1" />
|
||||||
<title>Credit Card Fraud Detection</title>
|
<title>New Style</title>
|
||||||
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
|
<?php
|
||||||
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css">
|
// Read project preview data from environment
|
||||||
<link href="assets/css/custom.css?v=<?php echo time(); ?>" rel="stylesheet">
|
$projectDescription = $_SERVER['PROJECT_DESCRIPTION'] ?? '';
|
||||||
|
$projectImageUrl = $_SERVER['PROJECT_IMAGE_URL'] ?? '';
|
||||||
|
?>
|
||||||
|
<?php if ($projectDescription): ?>
|
||||||
|
<!-- Meta description -->
|
||||||
|
<meta name="description" content='<?= htmlspecialchars($projectDescription) ?>' />
|
||||||
|
<!-- Open Graph meta tags -->
|
||||||
|
<meta property="og:description" content="<?= htmlspecialchars($projectDescription) ?>" />
|
||||||
|
<!-- Twitter meta tags -->
|
||||||
|
<meta property="twitter:description" content="<?= htmlspecialchars($projectDescription) ?>" />
|
||||||
|
<?php endif; ?>
|
||||||
|
<?php if ($projectImageUrl): ?>
|
||||||
|
<!-- Open Graph image -->
|
||||||
|
<meta property="og:image" content="<?= htmlspecialchars($projectImageUrl) ?>" />
|
||||||
|
<!-- Twitter image -->
|
||||||
|
<meta property="twitter:image" content="<?= htmlspecialchars($projectImageUrl) ?>" />
|
||||||
|
<?php endif; ?>
|
||||||
|
<link rel="preconnect" href="https://fonts.googleapis.com">
|
||||||
|
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
|
||||||
|
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap" rel="stylesheet">
|
||||||
|
<style>
|
||||||
|
:root {
|
||||||
|
--bg-color-start: #6a11cb;
|
||||||
|
--bg-color-end: #2575fc;
|
||||||
|
--text-color: #ffffff;
|
||||||
|
--card-bg-color: rgba(255, 255, 255, 0.01);
|
||||||
|
--card-border-color: rgba(255, 255, 255, 0.1);
|
||||||
|
}
|
||||||
|
body {
|
||||||
|
margin: 0;
|
||||||
|
font-family: 'Inter', sans-serif;
|
||||||
|
background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
|
||||||
|
color: var(--text-color);
|
||||||
|
display: flex;
|
||||||
|
justify-content: center;
|
||||||
|
align-items: center;
|
||||||
|
min-height: 100vh;
|
||||||
|
text-align: center;
|
||||||
|
overflow: hidden;
|
||||||
|
position: relative;
|
||||||
|
}
|
||||||
|
body::before {
|
||||||
|
content: '';
|
||||||
|
position: absolute;
|
||||||
|
top: 0;
|
||||||
|
left: 0;
|
||||||
|
width: 100%;
|
||||||
|
height: 100%;
|
||||||
|
background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M-10 10L110 10M10 -10L10 110" stroke-width="1" stroke="rgba(255,255,255,0.05)"/></svg>');
|
||||||
|
animation: bg-pan 20s linear infinite;
|
||||||
|
z-index: -1;
|
||||||
|
}
|
||||||
|
@keyframes bg-pan {
|
||||||
|
0% { background-position: 0% 0%; }
|
||||||
|
100% { background-position: 100% 100%; }
|
||||||
|
}
|
||||||
|
main {
|
||||||
|
padding: 2rem;
|
||||||
|
}
|
||||||
|
.card {
|
||||||
|
background: var(--card-bg-color);
|
||||||
|
border: 1px solid var(--card-border-color);
|
||||||
|
border-radius: 16px;
|
||||||
|
padding: 2rem;
|
||||||
|
backdrop-filter: blur(20px);
|
||||||
|
-webkit-backdrop-filter: blur(20px);
|
||||||
|
box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
|
||||||
|
}
|
||||||
|
.loader {
|
||||||
|
margin: 1.25rem auto 1.25rem;
|
||||||
|
width: 48px;
|
||||||
|
height: 48px;
|
||||||
|
border: 3px solid rgba(255, 255, 255, 0.25);
|
||||||
|
border-top-color: #fff;
|
||||||
|
border-radius: 50%;
|
||||||
|
animation: spin 1s linear infinite;
|
||||||
|
}
|
||||||
|
@keyframes spin {
|
||||||
|
from { transform: rotate(0deg); }
|
||||||
|
to { transform: rotate(360deg); }
|
||||||
|
}
|
||||||
|
.hint {
|
||||||
|
opacity: 0.9;
|
||||||
|
}
|
||||||
|
.sr-only {
|
||||||
|
position: absolute;
|
||||||
|
width: 1px; height: 1px;
|
||||||
|
padding: 0; margin: -1px;
|
||||||
|
overflow: hidden;
|
||||||
|
clip: rect(0, 0, 0, 0);
|
||||||
|
white-space: nowrap; border: 0;
|
||||||
|
}
|
||||||
|
h1 {
|
||||||
|
font-size: 3rem;
|
||||||
|
font-weight: 700;
|
||||||
|
margin: 0 0 1rem;
|
||||||
|
letter-spacing: -1px;
|
||||||
|
}
|
||||||
|
p {
|
||||||
|
margin: 0.5rem 0;
|
||||||
|
font-size: 1.1rem;
|
||||||
|
}
|
||||||
|
code {
|
||||||
|
background: rgba(0,0,0,0.2);
|
||||||
|
padding: 2px 6px;
|
||||||
|
border-radius: 4px;
|
||||||
|
font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
|
||||||
|
}
|
||||||
|
footer {
|
||||||
|
position: absolute;
|
||||||
|
bottom: 1rem;
|
||||||
|
font-size: 0.8rem;
|
||||||
|
opacity: 0.7;
|
||||||
|
}
|
||||||
|
</style>
|
||||||
</head>
|
</head>
|
||||||
<body>
|
<body>
|
||||||
|
<main>
|
||||||
<nav class="navbar navbar-expand-lg navbar-dark">
|
<div class="card">
|
||||||
<div class="container">
|
<h1>Analyzing your requirements and generating your website…</h1>
|
||||||
<a class="navbar-brand" href="#">Fraud Detection</a>
|
<div class="loader" role="status" aria-live="polite" aria-label="Applying initial changes">
|
||||||
<div class="theme-switcher ms-auto">
|
<span class="sr-only">Loading…</span>
|
||||||
<div class="form-check form-switch">
|
|
||||||
<input class="form-check-input" type="checkbox" id="theme-switch">
|
|
||||||
<label class="form-check-label" for="theme-switch"><i class="fas fa-moon theme-icon"></i></label>
|
|
||||||
</div>
|
</div>
|
||||||
|
<p class="hint"><?= ($_SERVER['HTTP_HOST'] ?? '') === 'appwizzy.com' ? 'AppWizzy' : 'Flatlogic' ?> AI is collecting your requirements and applying the first changes.</p>
|
||||||
|
<p class="hint">This page will update automatically as the plan is implemented.</p>
|
||||||
|
<p>Runtime: PHP <code><?= htmlspecialchars($phpVersion) ?></code> — UTC <code><?= htmlspecialchars($now) ?></code></p>
|
||||||
</div>
|
</div>
|
||||||
</div>
|
</main>
|
||||||
</nav>
|
<footer>
|
||||||
|
Page updated: <?= htmlspecialchars($now) ?> (UTC)
|
||||||
<div class="container mt-4">
|
|
||||||
<div class="hero animated">
|
|
||||||
<h1 class="animated" style="animation-delay: 0.3s;">Real-Time Transaction Analysis</h1>
|
|
||||||
<p class="lead animated" style="animation-delay: 0.5s;">Enter transaction details below to get a fraud probability score.</p>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="row">
|
|
||||||
<div class="col-md-8 mx-auto">
|
|
||||||
<div class="card shadow-sm animated">
|
|
||||||
<div class="card-header">
|
|
||||||
<h5 class="mb-0">New Transaction</h5>
|
|
||||||
</div>
|
|
||||||
<div class="card-body">
|
|
||||||
<form id="prediction-form">
|
|
||||||
<p class="text-muted small">NOTE: For this demo, only a few of the 28 anonymized features are shown.</p>
|
|
||||||
<div class="row g-3">
|
|
||||||
<div class="col-md-6">
|
|
||||||
<label for="time" class="form-label">Time (seconds since first transaction)</label>
|
|
||||||
<input type="number" class="form-control" id="time" value="3600" required>
|
|
||||||
</div>
|
|
||||||
<div class="col-md-6">
|
|
||||||
<label for="amount" class="form-label">Amount</label>
|
|
||||||
<input type="number" step="0.01" class="form-control" id="amount" value="129.99" required>
|
|
||||||
</div>
|
|
||||||
<div class="col-md-3">
|
|
||||||
<label for="v1" class="form-label">V1</label>
|
|
||||||
<input type="number" step="any" class="form-control" id="v1" value="-1.35">
|
|
||||||
</div>
|
|
||||||
<div class="col-md-3">
|
|
||||||
<label for="v2" class="form-label">V2</label>
|
|
||||||
<input type="number" step="any" class="form-control" id="v2" value="-0.03">
|
|
||||||
</div>
|
|
||||||
<div class="col-md-3">
|
|
||||||
<label for="v3" class="form-label">V3</label>
|
|
||||||
<input type="number" step="any" class="form-control" id="v3" value="2.53">
|
|
||||||
</div>
|
|
||||||
<div class="col-md-3">
|
|
||||||
<label for="v4" class="form-label">V4</label>
|
|
||||||
<input type="number" step="any" class="form-control" id="v4" value="1.37">
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
<div class="text-center mt-4">
|
|
||||||
<button type="submit" class="btn btn-primary btn-lg">Predict Fraud</button>
|
|
||||||
</div>
|
|
||||||
</form>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card shadow-sm mt-4" id="result-card" style="display: none; opacity: 0;">
|
|
||||||
<div class="card-body text-center">
|
|
||||||
<h5 id="result-message"></h5>
|
|
||||||
<p class="result-value" id="result-value"></p>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<footer class="text-center text-muted py-4 mt-5">
|
|
||||||
<p>© <?php echo date("Y"); ?> Fraud Detection Service</p>
|
|
||||||
</footer>
|
</footer>
|
||||||
|
|
||||||
<script src="assets/js/main.js?v=<?php echo time(); ?>"></script>
|
|
||||||
</body>
|
</body>
|
||||||
</html>
|
</html>
|
||||||
@ -1,6 +0,0 @@
|
|||||||
fastapi
|
|
||||||
uvicorn[standard]
|
|
||||||
scikit-learn
|
|
||||||
pandas
|
|
||||||
numpy
|
|
||||||
joblib
|
|
||||||
Loading…
x
Reference in New Issue
Block a user