API for robust solution?

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Use API RSOL in PSSE rev 35.

the data matrix large scale linear systems generally have correlated columns and high condition number finding unknows from measurements by using a least-square technique result in noise enhancement. for this reason, robust solution techniques are needed .in this article, we investigate how to regularize the momentum-alterative hessian sketch solver for solving ill-posed linear systems including large-scale data matrices. instead of using a single regularization parameter for all iterations, the proposed solver automatically finds a separate parameter in each iteration without requiring any other parameter tuning and then adjusts momentum parameters accordingly

PTI released the module "robosolve.pyc" to implement activity "rsol" on lower versions.

In v.34:

savfile = r"C:\Program Files (x86)\PTI\PSSE34\EXAMPLE\savnw.sav"
psspy.case(savfile)
import robosolve
#solver = RobustSolver(case="mydir/mycase.raw")
#result, steps, settings = solver.solve()
#result, steps, settings = robosolve.rsol(case="mydir/mycase.raw")
result, steps, settings = robosolve.rsol()   #use case in memory

In v.33: To run same code for v.34, copy first the module robosolve.pyc from its [v. 34 or v.35] psspy27 folder to the PSSe bin folder in v.33.

copy  "C:\Program Files (x86)\PTI\PSSE34\PSSPY27\robosolve.pyc"
to    "C:\Program Files (x86)\PTI\PSSE33\PSSBIN"