Amirullah, D. and Gultom, L.M. 2026. Quantum Natural Gradient vs. Adam Optimizer in Variational Quantum Classifiers: Crossover Analysis and Information Acquisition Efficiency. Journal of Computer Science and Informatics Engineering . 5, 3 (Jul. 2026), 414–423. DOI:https://doi.org/10.55537/cosie.v5i3.1829.