INTEGRATING STRUCTURED AND UNSTRUCTURED FEATURES FOR E-TICKETING CLASSIFICATION: A MACHINE LEARNING AND ENSEMBLE-BASED APPROACH - Mohd Jamaludin, Siti Zulaikha; Majahar Ali, Majid Khan; Shiung, Eric Wong Vun; Ismail, Mohd Tahir; Ibrahim, Noor Farizah; Zamri, Nur Ezlin (BAREKENG: Jurnal Ilmu Matematika dan Terapan, 2026)