1792938226a:3:{s:7:"content";s:548:"{"success":true,"status_code":200,"message":"Metrik evaluasi algoritma K-Means berhasil diambil","data":{"model":"K-Means APBDes Desa Simanindo","k":2,"davies_bouldin_index":0.7865,"silhouette_score":0.2864,"execution_time_ms":57.93,"iterations":2,"evaluation_summary":{"dbi_quality":"Baik (Semakin kecil DBI semakin rapat dan terpisah klaster)","silhouette_quality":"Struktur Klaster Kuat (Skor > 0.5 menunjukkan pemisahan yang baik)","convergence_speed":"Sangat Cepat (Konvergen stabil dalam 2 iterasi)"}},"timestamp":"2026-10-25T14:18:46+00:00"}";s:6:"status";i:200;s:7:"headers";a:2:{s:12:"Content-Type";s:31:"application/json; charset=UTF-8";s:13:"Cache-Control";s:44:"private, no-store, no-cache, must-revalidate";}}