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Ubah beberapa line k-means seperti jumlah centroid dan perubahan pemetaan klaster

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daffarahman11 2025-04-08 22:55:50 +07:00
parent d9daf8f054
commit 797d823cad
1 changed files with 12 additions and 6 deletions
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18
app/Http/Controllers/curasKmeansController.php
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@ -4,6 +4,7 @@
use App\Models\Curas; use App\Models\Curas;
use Illuminate\Http\Request; use Illuminate\Http\Request;
use App\Models\Klaster;
class curasKmeansController extends Controller class curasKmeansController extends Controller
{ {
@ -11,7 +12,7 @@ public function hitungKMeans()
{ {
$data = Curas::select('id', 'kecamatan_id', 'klaster_id', 'jumlah_curas')->orderBy('jumlah_curas', 'asc')->get(); $data = Curas::select('id', 'kecamatan_id', 'klaster_id', 'jumlah_curas')->orderBy('jumlah_curas', 'asc')->get();
$k = 3; $k = Klaster::count('id');
$maxIterasi = 100; $maxIterasi = 100;
$centroids = $data->random($k)->values()->map(function ($item) { $centroids = $data->random($k)->values()->map(function ($item) {
return [ return [
@ -51,6 +52,8 @@ public function hitungKMeans()
$prevAssignment = $currentAssignment; $prevAssignment = $currentAssignment;
// Update centroid berdasarkan rata-rata // Update centroid berdasarkan rata-rata
foreach ($clustered as $key => $group) { foreach ($clustered as $key => $group) {
$avg = collect($group)->avg('jumlah_curas'); $avg = collect($group)->avg('jumlah_curas');
@ -61,17 +64,20 @@ public function hitungKMeans()
}); });
} }
} }
// Final mapping centroid ke klaster_id (aman/sedang/rawan) // Final mapping centroid ke klaster_id (aman/sedang/rawan)
$finalCentroids = $centroids->map(function ($item, $index) { $finalCentroids = $centroids->map(function ($item, $index) {
return ['index' => $index + 1, 'jumlah_curas' => $item['jumlah_curas']]; return ['index' => $index + 1, 'jumlah_curas' => $item['jumlah_curas']];
})->sortBy('jumlah_curas')->values(); })->sortBy('jumlah_curas')->values();
$centroidToKlaster = [ $centroidToKlaster = [];
$finalCentroids[0]['index'] => 1, // aman
$finalCentroids[1]['index'] => 2, // sedang foreach ($finalCentroids as $i => $centroid) {
$finalCentroids[2]['index'] => 3, // rawan // Klaster ID mulai dari 1 (asumsi klaster di DB bernomor 1, 2, 3, ...)
]; $centroidToKlaster[$centroid['index']] = $i + 1;
}
// Update ke database // Update ke database
foreach ($data as $item) { foreach ($data as $item) {