4.2.2. Knapsack

Darmawan et al. [139] used the EHO algorithm to solve 0–1 knapsack problems. The analysis of the computational results indicated that EHO outperformed other algorithms for convergence rate and global search ability when more and more iterations were done.

#### 4.2.3. Acoustic Energy-Based Positioning

Correia et al. [140] used the EHO algorithm to validate and adjust the decay acoustic model for acoustic energy-based positioning problems. The implementation results for both simulation results and real measurements showed EHO had a good alignment with conducted simulations and was successfully applied to acoustic energy-based positioning problems.
