“…Researchers developed metrics to be able to evaluate the efficiency of a line balancing approach. Metrics such as balance delay and smoothness index (Chao & Sun, 2016) are used. Mainly the evaluation intended to measure the solution difficulty (Driscoll & Thilakawardana, 2001), namely measures such as order strength (Driscoll & Thilakawardana, 2001), flexibility ratio (Bukchin et al, 2002), west ratio (Bukchin et al, 2002), and time interval (Baykasoğlu & Özbakır, 2015) are used.…”