wassname/simpeg
1
0
Fork 0
mirror of https://github.com/wassname/simpeg.git synced 2026-07-13 17:45:30 +08:00
Code Issues Packages Projects Releases Wiki Activity

Update IRLS directive to allow multiple GN iterations.

Browse Source 
Remove modifications to the ProjGN solver.
Update IRLS example.
This commit is contained in:
D Fournier
2016-05-27 13:11:31 -07:00
parent fd3bde787f
commit 022e1f7660
4 changed files with 121 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files
SimPEG/Examples/Inversion_IRLS.py
+7 -7
View File
@@ -20,7 +20,7 @@ def run(N=200, plotIt=True):
m0 = np.ones(mesh.nC) * 1e-4
mref = np.zeros(mesh.nC)
nk = 10
nk = 15
jk = np.linspace(1.,nk,nk)
p = -2.
q = 1.
@@ -59,7 +59,7 @@ def run(N=200, plotIt=True):
dmis = DataMisfit.l2_DataMisfit(survey)
dmis.Wd = 1./wd
opt = Optimization.ProjectedGNCG(maxIter=20,lower=-2.,upper=2., maxIterCG= 10, maxIterGN=1, tolCG = 1e-4)
opt = Optimization.ProjectedGNCG(maxIter=20,lower=-2.,upper=2., maxIterCG= 10, tolCG = 1e-4)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt)
invProb.curModel = m0
@@ -83,18 +83,18 @@ def run(N=200, plotIt=True):
reg.cell_weights = wr
reg.mref = np.zeros(mesh.nC)
reg.eps_p = 5e-2
reg.eps_p = 1e-3
reg.eps_q = 1e-2
reg.norms = [0., 0., 2., 2.]
opt = Optimization.ProjectedGNCG(maxIter=10 ,lower=-2.,upper=2., maxIterLS = 20, maxIterCG= 10, tolCG = 1e-3)
opt = Optimization.ProjectedGNCG(maxIter=100 ,lower=-2.,upper=2., maxIterLS = 20, maxIterCG= 10, tolCG = 1e-3)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta = invProb.beta*2.)
beta = Directives.BetaSchedule(coolingFactor=1, coolingRate=1)
#betaest = Directives.BetaEstimate_ByEig()
update_beta = Directives.Scale_Beta(tol = 0.05, coolingRate=5)
target = Directives.TargetMisfit()
IRLS =Directives.Update_IRLS( phi_m_last = phim, phi_d_last = phid )
IRLS = Directives.Update_IRLS( phi_m_last = phim, phi_d_last = phid, coolingRate=5 )
inv = Inversion.BaseInversion(invProb, directiveList=[beta,IRLS])
inv = Inversion.BaseInversion(invProb, directiveList=[beta,IRLS,update_beta])
m0 = mrec