“…The relationship between the formulation of the objective function and the chosen metaheuristic offers a lens into the evolving research preferences and trends in feature selection. Figure 30 The majority of articles with a "weighted multi-objective" formulation predominantly employ both "direct binarization" [73,80,82,87,94,95,98,101,104,105,108,112,115,118,119,123,133,134,136,149,150,152,153,158,159,161,169,177] and "binarization with various approaches" [78,89,91,92,96,106,107,110,114,124,129,131,132,138,142,144,146,154,…”