Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4 Krisnayana, I Dewa Made, Putu Arya Mertasana, & Made Sudarma. " APLIKASI SISTEM PAKAR DIAGNOSA PENYAKIT GASTROENTERITIS BERBASIS ANDROID DENGAN METODE CLASSIFICATION AND REGRESSION TREE." Jurnal SPEKTRUM [Online], 7.3 (2020): 25-33. Web. 29 Aug. 2026