Auto-update: 2025-10-23 15:04:00
This commit is contained in:
parent
7698240a79
commit
6170c48371
28 changed files with 19938 additions and 0 deletions
492
activite2/knn_microregions_animation.html
Normal file
492
activite2/knn_microregions_animation.html
Normal file
|
|
@ -0,0 +1,492 @@
|
|||
<!DOCTYPE html>
|
||||
<html lang="fr">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>k-NN Animation - Micro-régions</title>
|
||||
<style>
|
||||
body {
|
||||
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
|
||||
margin: 0;
|
||||
padding: 20px;
|
||||
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
|
||||
min-height: 100vh;
|
||||
}
|
||||
|
||||
.container {
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
background: white;
|
||||
border-radius: 15px;
|
||||
padding: 30px;
|
||||
box-shadow: 0 10px 30px rgba(0,0,0,0.3);
|
||||
}
|
||||
|
||||
h1 {
|
||||
text-align: center;
|
||||
color: #333;
|
||||
margin-bottom: 10px;
|
||||
}
|
||||
|
||||
.subtitle {
|
||||
text-align: center;
|
||||
color: #666;
|
||||
margin-bottom: 30px;
|
||||
font-style: italic;
|
||||
}
|
||||
|
||||
canvas {
|
||||
border: 2px solid #ddd;
|
||||
border-radius: 10px;
|
||||
display: block;
|
||||
margin: 20px auto;
|
||||
cursor: crosshair;
|
||||
background: #fafafa;
|
||||
}
|
||||
|
||||
.controls {
|
||||
background: #f5f5f5;
|
||||
padding: 20px;
|
||||
border-radius: 10px;
|
||||
margin: 20px 0;
|
||||
}
|
||||
|
||||
.control-group {
|
||||
margin: 15px 0;
|
||||
}
|
||||
|
||||
label {
|
||||
font-weight: bold;
|
||||
color: #555;
|
||||
display: block;
|
||||
margin-bottom: 8px;
|
||||
}
|
||||
|
||||
input[type="range"] {
|
||||
width: 100%;
|
||||
height: 8px;
|
||||
border-radius: 5px;
|
||||
background: #ddd;
|
||||
outline: none;
|
||||
}
|
||||
|
||||
input[type="range"]::-webkit-slider-thumb {
|
||||
appearance: none;
|
||||
width: 20px;
|
||||
height: 20px;
|
||||
border-radius: 50%;
|
||||
background: #667eea;
|
||||
cursor: pointer;
|
||||
}
|
||||
|
||||
input[type="range"]::-moz-range-thumb {
|
||||
width: 20px;
|
||||
height: 20px;
|
||||
border-radius: 50%;
|
||||
background: #667eea;
|
||||
cursor: pointer;
|
||||
border: none;
|
||||
}
|
||||
|
||||
.value-display {
|
||||
display: inline-block;
|
||||
background: #667eea;
|
||||
color: white;
|
||||
padding: 5px 15px;
|
||||
border-radius: 20px;
|
||||
font-weight: bold;
|
||||
margin-left: 10px;
|
||||
}
|
||||
|
||||
.legend {
|
||||
display: flex;
|
||||
justify-content: center;
|
||||
gap: 20px;
|
||||
margin: 20px 0;
|
||||
flex-wrap: wrap;
|
||||
}
|
||||
|
||||
.legend-item {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
gap: 10px;
|
||||
padding: 8px 15px;
|
||||
background: white;
|
||||
border-radius: 8px;
|
||||
border: 2px solid #ddd;
|
||||
}
|
||||
|
||||
.legend-circle {
|
||||
width: 20px;
|
||||
height: 20px;
|
||||
border-radius: 50%;
|
||||
border: 2px solid #333;
|
||||
}
|
||||
|
||||
.result {
|
||||
text-align: center;
|
||||
font-size: 1.5em;
|
||||
font-weight: bold;
|
||||
margin: 20px 0;
|
||||
padding: 20px;
|
||||
border-radius: 10px;
|
||||
background: #f0f0f0;
|
||||
}
|
||||
|
||||
.votes {
|
||||
display: flex;
|
||||
justify-content: center;
|
||||
gap: 15px;
|
||||
margin: 15px 0;
|
||||
flex-wrap: wrap;
|
||||
}
|
||||
|
||||
.vote-box {
|
||||
padding: 15px 20px;
|
||||
border-radius: 10px;
|
||||
text-align: center;
|
||||
min-width: 100px;
|
||||
border: 3px solid transparent;
|
||||
}
|
||||
|
||||
.vote-count {
|
||||
font-size: 2em;
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.vote-label {
|
||||
font-size: 0.9em;
|
||||
margin-top: 5px;
|
||||
}
|
||||
|
||||
.buttons {
|
||||
display: flex;
|
||||
gap: 10px;
|
||||
justify-content: center;
|
||||
margin: 20px 0;
|
||||
flex-wrap: wrap;
|
||||
}
|
||||
|
||||
button {
|
||||
padding: 12px 24px;
|
||||
font-size: 16px;
|
||||
border: none;
|
||||
border-radius: 8px;
|
||||
cursor: pointer;
|
||||
font-weight: bold;
|
||||
transition: all 0.3s;
|
||||
}
|
||||
|
||||
button:hover {
|
||||
transform: translateY(-2px);
|
||||
box-shadow: 0 5px 15px rgba(0,0,0,0.2);
|
||||
}
|
||||
|
||||
.btn-reset {
|
||||
background: #f44336;
|
||||
color: white;
|
||||
}
|
||||
|
||||
.btn-random {
|
||||
background: #4CAF50;
|
||||
color: white;
|
||||
}
|
||||
|
||||
.instructions {
|
||||
background: #fff3cd;
|
||||
border-left: 4px solid #ffc107;
|
||||
padding: 15px;
|
||||
margin: 20px 0;
|
||||
border-radius: 5px;
|
||||
}
|
||||
|
||||
.instructions h3 {
|
||||
margin-top: 0;
|
||||
color: #856404;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="container">
|
||||
<h1>🎯 Animation k-NN : Classification multi-zones</h1>
|
||||
<p class="subtitle">Algorithme des k plus proches voisins avec plusieurs classes</p>
|
||||
|
||||
<div class="instructions">
|
||||
<h3>📋 Instructions</h3>
|
||||
<ul>
|
||||
<li><strong>Cliquez</strong> sur le graphique pour placer un nouveau point</li>
|
||||
<li><strong>Ajustez le curseur k</strong> pour voir l'impact du nombre de voisins</li>
|
||||
<li>Observez comment les <strong>votes</strong> se répartissent entre les zones</li>
|
||||
<li>Les lignes colorées montrent les <strong>k plus proches voisins</strong></li>
|
||||
</ul>
|
||||
</div>
|
||||
|
||||
<canvas id="canvas" width="800" height="600"></canvas>
|
||||
|
||||
<div class="legend" id="legend"></div>
|
||||
|
||||
<div class="controls">
|
||||
<div class="control-group">
|
||||
<label>
|
||||
Nombre de voisins (k) :
|
||||
<span class="value-display" id="kValue">5</span>
|
||||
</label>
|
||||
<input type="range" id="kSlider" min="1" max="21" value="5" step="2">
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="result" id="result">
|
||||
Cliquez sur le graphique pour classifier un point
|
||||
</div>
|
||||
|
||||
<div class="votes" id="votes"></div>
|
||||
|
||||
<div class="buttons">
|
||||
<button class="btn-random" onclick="placeRandomPoint()">🎲 Point Aléatoire</button>
|
||||
<button class="btn-reset" onclick="resetPoint()">🔄 Réinitialiser</button>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<script>
|
||||
const canvas = document.getElementById('canvas');
|
||||
const ctx = canvas.getContext('2d');
|
||||
const kSlider = document.getElementById('kSlider');
|
||||
const kValue = document.getElementById('kValue');
|
||||
const result = document.getElementById('result');
|
||||
const votesDiv = document.getElementById('votes');
|
||||
const legendDiv = document.getElementById('legend');
|
||||
|
||||
// Définition des zones (micro-régions)
|
||||
const zones = [
|
||||
{ name: 'Alta Rocca', color: '#e74c3c', shortName: 'Alta Rocca' },
|
||||
{ name: 'Balagne', color: '#3498db', shortName: 'Balagne' },
|
||||
{ name: 'Centre Corse', color: '#2ecc71', shortName: 'Centre' },
|
||||
{ name: 'Extrême Sud', color: '#f39c12', shortName: 'Sud' },
|
||||
{ name: 'Cap Corse', color: '#9b59b6', shortName: 'Cap' }
|
||||
];
|
||||
|
||||
// Points d'apprentissage (générés automatiquement par zone)
|
||||
const trainingPoints = [];
|
||||
|
||||
// Zone 1 - Alta Rocca (rouge, bas gauche)
|
||||
for (let i = 0; i < 15; i++) {
|
||||
trainingPoints.push({
|
||||
x: 100 + Math.random() * 150,
|
||||
y: 400 + Math.random() * 150,
|
||||
zone: 0
|
||||
});
|
||||
}
|
||||
|
||||
// Zone 2 - Balagne (bleu, haut gauche)
|
||||
for (let i = 0; i < 15; i++) {
|
||||
trainingPoints.push({
|
||||
x: 100 + Math.random() * 150,
|
||||
y: 50 + Math.random() * 150,
|
||||
zone: 1
|
||||
});
|
||||
}
|
||||
|
||||
// Zone 3 - Centre Corse (vert, centre)
|
||||
for (let i = 0; i < 15; i++) {
|
||||
trainingPoints.push({
|
||||
x: 300 + Math.random() * 200,
|
||||
y: 200 + Math.random() * 200,
|
||||
zone: 2
|
||||
});
|
||||
}
|
||||
|
||||
// Zone 4 - Extrême Sud (jaune, bas droite)
|
||||
for (let i = 0; i < 15; i++) {
|
||||
trainingPoints.push({
|
||||
x: 550 + Math.random() * 150,
|
||||
y: 400 + Math.random() * 150,
|
||||
zone: 3
|
||||
});
|
||||
}
|
||||
|
||||
// Zone 5 - Cap Corse (violet, haut droite)
|
||||
for (let i = 0; i < 15; i++) {
|
||||
trainingPoints.push({
|
||||
x: 550 + Math.random() * 150,
|
||||
y: 50 + Math.random() * 150,
|
||||
zone: 4
|
||||
});
|
||||
}
|
||||
|
||||
let testPoint = null;
|
||||
let k = 5;
|
||||
|
||||
// Créer la légende
|
||||
function createLegend() {
|
||||
legendDiv.innerHTML = '';
|
||||
zones.forEach(zone => {
|
||||
const item = document.createElement('div');
|
||||
item.className = 'legend-item';
|
||||
item.innerHTML = `
|
||||
<div class="legend-circle" style="background: ${zone.color};"></div>
|
||||
<span>${zone.name}</span>
|
||||
`;
|
||||
legendDiv.appendChild(item);
|
||||
});
|
||||
}
|
||||
|
||||
function distance(p1, p2) {
|
||||
return Math.sqrt((p1.x - p2.x) ** 2 + (p1.y - p2.y) ** 2);
|
||||
}
|
||||
|
||||
function findKNearest(point, k) {
|
||||
const distances = trainingPoints.map(p => ({
|
||||
point: p,
|
||||
dist: distance(point, p)
|
||||
}));
|
||||
|
||||
distances.sort((a, b) => a.dist - b.dist);
|
||||
return distances.slice(0, k);
|
||||
}
|
||||
|
||||
function classify(point, k) {
|
||||
const nearest = findKNearest(point, k);
|
||||
const votes = {};
|
||||
|
||||
zones.forEach((_, idx) => votes[idx] = 0);
|
||||
|
||||
nearest.forEach(n => {
|
||||
votes[n.point.zone]++;
|
||||
});
|
||||
|
||||
// Trouver la zone avec le plus de votes
|
||||
let maxVotes = -1;
|
||||
let predictedZone = -1;
|
||||
|
||||
for (let zone in votes) {
|
||||
if (votes[zone] > maxVotes) {
|
||||
maxVotes = votes[zone];
|
||||
predictedZone = parseInt(zone);
|
||||
}
|
||||
}
|
||||
|
||||
return {
|
||||
zone: predictedZone,
|
||||
votes: votes,
|
||||
nearest: nearest
|
||||
};
|
||||
}
|
||||
|
||||
function draw() {
|
||||
ctx.clearRect(0, 0, canvas.width, canvas.height);
|
||||
|
||||
// Dessiner les points d'apprentissage
|
||||
trainingPoints.forEach(p => {
|
||||
ctx.beginPath();
|
||||
ctx.arc(p.x, p.y, 6, 0, 2 * Math.PI);
|
||||
ctx.fillStyle = zones[p.zone].color;
|
||||
ctx.fill();
|
||||
ctx.strokeStyle = '#333';
|
||||
ctx.lineWidth = 1;
|
||||
ctx.stroke();
|
||||
});
|
||||
|
||||
// Si un point test existe
|
||||
if (testPoint) {
|
||||
const classification = classify(testPoint, k);
|
||||
|
||||
// Dessiner les lignes vers les k plus proches voisins
|
||||
classification.nearest.forEach((n, index) => {
|
||||
ctx.beginPath();
|
||||
ctx.moveTo(testPoint.x, testPoint.y);
|
||||
ctx.lineTo(n.point.x, n.point.y);
|
||||
ctx.strokeStyle = zones[n.point.zone].color;
|
||||
ctx.globalAlpha = 0.3 + 0.7 * (k - index) / k;
|
||||
ctx.lineWidth = 2;
|
||||
ctx.stroke();
|
||||
ctx.globalAlpha = 1;
|
||||
});
|
||||
|
||||
// Dessiner un cercle autour du k-ième plus proche voisin
|
||||
if (classification.nearest.length > 0) {
|
||||
const maxDist = classification.nearest[classification.nearest.length - 1].dist;
|
||||
ctx.beginPath();
|
||||
ctx.arc(testPoint.x, testPoint.y, maxDist, 0, 2 * Math.PI);
|
||||
ctx.strokeStyle = 'rgba(0, 0, 0, 0.2)';
|
||||
ctx.lineWidth = 2;
|
||||
ctx.setLineDash([5, 5]);
|
||||
ctx.stroke();
|
||||
ctx.setLineDash([]);
|
||||
}
|
||||
|
||||
// Dessiner le point test
|
||||
ctx.beginPath();
|
||||
ctx.arc(testPoint.x, testPoint.y, 12, 0, 2 * Math.PI);
|
||||
ctx.fillStyle = '#95a5a6';
|
||||
ctx.fill();
|
||||
ctx.strokeStyle = '#000';
|
||||
ctx.lineWidth = 3;
|
||||
ctx.stroke();
|
||||
|
||||
// Afficher le résultat
|
||||
displayResults(classification);
|
||||
}
|
||||
}
|
||||
|
||||
function displayResults(classification) {
|
||||
const zoneName = zones[classification.zone].name;
|
||||
const zoneColor = zones[classification.zone].color;
|
||||
|
||||
result.innerHTML = `Classification : <span style="color: ${zoneColor};">${zoneName}</span>`;
|
||||
result.style.background = zoneColor + '22';
|
||||
|
||||
// Afficher les votes
|
||||
votesDiv.innerHTML = '';
|
||||
zones.forEach((zone, idx) => {
|
||||
const voteBox = document.createElement('div');
|
||||
voteBox.className = 'vote-box';
|
||||
voteBox.style.background = zone.color + '22';
|
||||
voteBox.style.borderColor = classification.zone === idx ? zone.color : 'transparent';
|
||||
|
||||
const voteCount = classification.votes[idx] || 0;
|
||||
|
||||
voteBox.innerHTML = `
|
||||
<div class="vote-count" style="color: ${zone.color};">${voteCount}</div>
|
||||
<div class="vote-label">${zone.shortName}</div>
|
||||
`;
|
||||
votesDiv.appendChild(voteBox);
|
||||
});
|
||||
}
|
||||
|
||||
canvas.addEventListener('click', (e) => {
|
||||
const rect = canvas.getBoundingClientRect();
|
||||
testPoint = {
|
||||
x: e.clientX - rect.left,
|
||||
y: e.clientY - rect.top
|
||||
};
|
||||
draw();
|
||||
});
|
||||
|
||||
kSlider.addEventListener('input', (e) => {
|
||||
k = parseInt(e.target.value);
|
||||
kValue.textContent = k;
|
||||
draw();
|
||||
});
|
||||
|
||||
function placeRandomPoint() {
|
||||
testPoint = {
|
||||
x: Math.random() * (canvas.width - 100) + 50,
|
||||
y: Math.random() * (canvas.height - 100) + 50
|
||||
};
|
||||
draw();
|
||||
}
|
||||
|
||||
function resetPoint() {
|
||||
testPoint = null;
|
||||
result.innerHTML = 'Cliquez sur le graphique pour classifier un point';
|
||||
result.style.background = '#f0f0f0';
|
||||
votesDiv.innerHTML = '';
|
||||
draw();
|
||||
}
|
||||
|
||||
// Initialisation
|
||||
createLegend();
|
||||
draw();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Add table
Add a link
Reference in a new issue