This code is based on modifications made to the open-source code of PVP4REAL, 
includes all the algorithms from the paper, 
such as HACO and its generalized experimental upgraded versions HACOOptimize, 
TS2C, and VIQS. 
Please note that all ablation experiments, 
as well as the base algorithms PVP and PVP4Real and their generalization experiments, 
are implemented by modifying the parameters of VIQStd3.