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var_gpyopt.py
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var_gpyopt.py
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# Alejandra Mendez - 28/04/2019
# v1.2
#
# * this program implements hyperoptimization of NLAMVAR parameters in
# autosctructure code (max=20)
# * the autovarlambda.f90 subroutine is compiled with f2py and incorporated
# to this code
# * the autostructure code is executed using system
# * the number of configurations defined by 'cfgs' in .yaml is considered
# in the computation
# * multiple excited energies can be considered via 'nener'
# * the number of elements in array 'weight' must be equal
# to the amount of energies 'nener' considered
#
# * input variables:
# cfgs -- number of configurations to be included in the calculation
# initer -- initial number of evaluations (first prior)
# maxevals -- number of evaluations in minimization
# vpol -- include polarization potential (True/False)
# nlamvar -- number of lambda parameters to be varied
# maxlam -- maximum lambda value
# minlam -- minimum lambda value
# cost -- type of cost function
# ="ener" : summation of energy er%
# ="aki" : summation of einstein coefficient er%
# ="ener+aki" : summation of energy and einstein coefficient er%
# nener -- number of states to be considered in minimization (if cost='ener' or 'ener+aki')
# ntran -- number of transitions to be considered in minimization (if cost='aki' or 'ener+aki')
# initmap -- type of initial sampling
# ="random" : random sampling
# ="latin" : latin hypercube sampling
# iseed -- sets the seed for random initial calculations
# gridtype -- grid type
# ="continuous"
# mtype -- model type
# ="GP" : Gaussian Process
# aftype -- acquisition function type
# ="EI" : Expected improvement
# ="MPI" : Maximum probability of improvement
# ="GP-UCB" : Upper confidence bound
# afweight -- acquisition weight (float)
# mfunc -- minimization function
# ="Er" : sum of weighted relative errros
# ="Er**2" : sum of weighted square relative errors
# minst -- states to be included in minimization
# ="gr+ex" : ground and excited states
# ="ex" : only excited states
# wi -- minimization weight
# ="eq" : all elements are weighted equally
# ="gi" : use statistical weight gi=sum 2j+1
# ="inp" : read input values (below)
# weight -- weight in relative errors (number of elements == nener)
#
#
# * input files:
# inpvar_gpyopt.yml -- input file for .py
# das_XXCFG -- autostructure input
# NIST_*.dat -- observed data
# * cfgs: configurations
# * terms: energy terms
# * energies: binding and ionization energies
# * lines: transition lines
# f2py_autovarlambda.f90 -- subroutines for structure optimization
# SR.*.for -- subroutines for structure optimization
# Quietly compile autovarlamba.f90
import os
import sys
# os.system('f2py -c -m autovarlambda f2py_autovarlambda.f90 SR.as_inp.for SR.nist_inp.for SR.compare_calc.for')
# print('\n===>>> autovarlambda compiled with f2py <<<===')
# Import other stuff
import numpy as np
import autovarlambda
import time
import yaml
import GPy
import GPyOpt
from numpy.random import seed
import matplotlib.pyplot as plt
import matplotlib.ticker as ticker
from matplotlib import gridspec
colors=['k','r','g','b','m','y','c','tab:blue',
'tab:orange','tab:green','tab:red','tab:purple','tab:brown','tab:pink','tab:gray']
orb=['1s','2s','2p','3s','3p','3d','4s','4p','4d','4f','5s','5p','5d','5f','5g']
symbs=['o','s','v','^','>','<','o','o','o','o','o','o','o','o','o']
# Input parameters
global gridtype, cfgs, maxevals, mtype, aftype, afweight, gridtype, igrid, initer, ipol
global nlamvar, maxlam, minlam, mfunc, ifun, minst, imin, nener, wi, igi, iseed
global ii, npolvar, initmap, cost
#########################################################################################################
# Define functions
#########################################################################################################
def lamindex(idxlam):
# inmx=autovarlambda.lamidxbck.inmx
inmx=45 # check with NMX form fortran subroutine
vidxlam=np.zeros(inmx)
for i in range(len(idxlam)): vidxlam[i]=idxlam[i]
autovarlambda.lamidxbck.idxlam=vidxlam
return
def data_input():
global gridtype, cfgs, maxevals, mtype, aftype, afweight, gridtype, igrid, initer, ipol
global nlamvar, idxlam, maxlam, minlam, mfunc, ifun, minst, imin, nener, ntran, wi, igi, iseed, initmap, cost
print('\n===>>> Input parameters <<<===\n')
with open('inpvar_gpyopt.yml', 'r') as stream:
data_loaded=yaml.load(stream)
cfgs=data_loaded.get('cfgs')
initer=data_loaded.get('initer')
maxevals=data_loaded.get('maxevals')
vpol=data_loaded.get('vpol')
nlamvar=data_loaded.get('nlamvar')
idxlam=data_loaded.get('orbs')
lamindex(idxlam)
maxlam=data_loaded.get('maxlam')
minlam=data_loaded.get('minlam')
cost=data_loaded.get('cost')
nener=data_loaded.get('nener')
ntran=data_loaded.get('ntran')
initmap=data_loaded.get('initmap')
iseed=data_loaded.get('iseed')
gridtype=data_loaded.get('gridtype')
mtype=data_loaded.get('mtype')
aftype=data_loaded.get('aftype')
afweight=data_loaded.get('afweight')
mfunc=data_loaded.get('mfunc')
minst=data_loaded.get('minst')
wi=data_loaded.get('wi')
if cfgs is None: raise ValueError('Error: cfgs not defined.')
if initer is None: raise ValueError('Error: initer not defined.')
if maxevals is None: raise ValueError('Error: maxevals not defined.')
if mtype is None:
mtype='GP'
print('Warning: model type not defined. Use default: GP')
# if mtype!='GP': raise ValueError('Error: '+mtype+' not implemented.')
if aftype is None:
aftype='EI'
print('Warning: acquisition function type not defined. Use default: EI')
if aftype!='EI' and aftype!='MPI' and aftype!='GP-UCB': raise ValueError('Error: '+aftype+' not implemented.')
if afweight is None:
afweight=1.
print('Warning: acquisition function weight not defined. Use default: 1.')
if gridtype=='continuous':
igrid=0
elif gridtype is None:
igrid=0
print('Warning: grid type not defined. Use default: continuous')
else: raise ValueError('Error: '+gridtype+' not implemented.')
if nlamvar is None: raise ValueError('Error: nlamvar not defined.')
if len(idxlam) is None: raise ValueError('Error: orbs not defined.')
if maxlam is None or minlam is None: raise ValueError('Error: maxlam and/or minlam not defined.')
if mfunc=='Er':
ifun=0
elif mfunc=='Er**2':
ifun=1
elif mfunc is None:
imin=0
print('Warning: minimization function not defined. Use default: Er ')
else: raise ValueError('Error: '+mfunc+' not implemented.')
if minst=='gr+ex':
imin=0
elif minst=='ex':
imin=1
elif minst is None:
ifun=0
print('Warning: states to be minimized not defined. Use default: ground + excited')
else: raise ValueError('Error: '+minst+' not implemented.')
if nener is None: raise ValueError('Error: nener not defined.')
if wi=='eq' or wi=='gi':
if wi=='eq': igi=0
if wi=='gi': igi=1
weight=np.full(nener,1.)
elif wi=='inp':
inpweight=data_loaded.get('weight')
linpw=len(inpweight)
if linpw<nener: # fill the missing wi with the last input value
for i in range(linpw,nener):
inpweight.append(inpweight[linpw-1])
weight=np.array(listweight)
if inpweight is None or linpw==0:
raise ValueError('Error: weight not defined.')
elif wi is None:
igi=1
print('Warning: wi not defined. Use default: eq')
else: raise ValueError('Error: '+wi+'not implemented.')
if vpol==True:
ipol=1
autovarlambda.polbck.ipol=ipol
else: ipol=0
if iseed is None:
iseed=123456.
raise ValueError('Warning: iseed = 123456 ')
if initmap is None:
initmap='latin'
raise ValueError('Warning: initmap = latin')
if cost is None:
cost='ener'
raise ValueError('Warning: cost = ener')
def print_input():
global gridtype, cfgs, maxevals, mtype, aftype, afweight, gridtype, igrid, initer, ipol
global nlamvar, idxlam, maxlam, minlam, mfunc, ifun, minst, imin, nener, wi, igi, iseed, initmap, cost
print(' * initial evaluations: '+str(initer))
print(' * evaluations: '+str(maxevals))
print(' * number of orbitals varied: '+str(nlamvar))
print(' * orbitals: ',idxlam)
print(' * model type: '+mtype)
print(' * acquisition function type: '+aftype)
print(' * acquisition function weight: '+str(afweight))
print(' * grid type: '+gridtype)
if ifun==0: print(' * minimization function: sum of weighted relative errors')
if ifun==1: print(' * minimization function: sum of weighted square relative errors')
if imin==0: print(' * states included in minimization: ground + excited')
if imin==1: print(' * states included in minimization: excited')
print(' * weight type: '+wi)
if ipol==1: print(' * polarization: yes')
if ipol==0: print(' * polarization: no')
print(' * iseed: ',iseed)
print(' * initmap: ',initmap)
print(' * cost: ',cost)
def atom_name(nzion):
nzion=abs(nzion)
atomname=['H','He','Li','Be','B','C','N','O','F','Ne','Na','Mg']
nname=len(atomname)
if nzion>nname: raise ValueError('atomname not defined for Z='+str(nzion))
for i in range(nname):
if nzion==i+1: chatom=atomname[i]
return chatom
def pot_type(nzion):
if nzion < 0:
chtype='STO'
else:
chtype='TFDA'
return chtype
# Define function for writing iteration number in a human-readable-way
def human_format(num):
magnitude=0
while abs(num) >= 1000:
magnitude += 1
num /= 1000
return '%.f%s' % (num, ['', 'K', 'M', 'G', 'T', 'P'][magnitude])
# Determine file name string vector from fortran subroutine data
def def_filename():
global ncfg, filename,initer
ncfg=autovarlambda.salgebbck.mxconf
nzion=autovarlambda.sminimbck.nzion
chatom=atom_name(nzion)
chtype=pot_type(nzion)
cfgs=str(ncfg)+'CFG'+chtype
idrun=str(initer)+mtype+human_format(maxevals)
filename=chatom+cfgs+'_'+idrun
# Open .out file
def open_fout():
global fener
fener=open(filename+'.out','w')
# Define and initialize variables
def init_var():
enere=np.zeros(nener)
enerc=np.zeros(nener)
neex=int()
return enere, enerc, neex
def check_errlog():
ierr=0
errlog=os.path.exists('errlog')
if errlog == True:
ierr=1
os.system('rm errlog')
autovarlambda.errlogbck.ierr=ierr
return
def print_opt(total,myBopt):
global fmin,weight,fener,npolvar,initer,maxevals,filename,iseed,nlamvar,cost
var_best=myBopt.x_opt
fmin=myBopt.fx_opt
if fvar=='pol':
py_runAS_pol(var_best,npolvar)
xalpha='\n'+17*' '+'alpha = '
xrho=19*' '+'rho = '
ii=0
for i in range(npolvar):
j=i+ii
xalpha=xalpha+'{vp['+str(j)+']:.{prec}f}'
xrho=xrho+'{vp['+str(j+1)+']:.{prec}f}'
if j<npolvar:
xalpha=xalpha+' , '
xrho=xrho+' , '
ii=ii+1
if fvar=='lam':
py_runAS_lam(var_best,nlamvar)
xlambda='\n'+16*' '+'lambda = '
for i in range(nlamvar):
xlambda=xlambda+' {vp['+str(i)+']:.{prec}f} '
if cost=='ener': loss_best=loss_sumwE()
if cost=='aki': loss_best=loss_sumaki()
if cost=='ener+aki':
lei=loss_sumwE()
laki=loss_sumaki()
loss_best=lei+laki
print('\n'+4*' '+'Initial iterations = {:5d}'.format(initer),file=fener)
print(' Number of evaluations = {:5d}'.format(maxevals),file=fener)
print(11*' '+'Random seed = {:8d}'.format(iseed),file=fener)
print(12*' '+'Total time = {:.{prec}f} min\n'.format(total,prec=4),file=fener)
print('-'*80,file=fener)
print(' Best results:',file=fener)
print('-'*80,file=fener)
if fvar=='pol':
print(xalpha.format(vp=var_best,prec=4),file=fener)
print(xrho.format(vp=var_best,prec=4),file=fener)
if fvar=='lam':
print(xlambda.format(vp=var_best,prec=4),file=fener)
if loss_best!=fmin:
print("fx_opt = ",fmin,"\nloss_min = ",loss_best)
raise ValueError('Error: loss_best!=fmin ')
print('\n'+12*' '+'total loss = {:12.4f} %'.format(loss_best),file=fener)
print(12*' '+'best loss = {:12.4f} %'.format(fmin),file=fener)
autovarlambda.print_ener()
autovarlambda.print_aki()
os.system('mv relat_error.dat '+filename+'.erp')
os.system('mv tmp '+filename+'.das')
fener.close()
return
def clean_up():
os.system('rm das CONFIG.DAT oic ols olg TERMS LEVELS')
os.system('if [ -f "adasex.in.form" ]; then rm adas* adf* OMG*; fi')
########################################################################
# S P A C E S
########################################################################
def lamspace(minlam,maxlam):
space=[]
for i in range(nlamvar):
alam=str(i+1)
# space.append({'name': 'lam'+alam, 'type': gridtype, 'domain': (minlam,maxlam)})
space.append({'name': 'lam'+alam, 'type': gridtype, 'domain': (minlam[i],maxlam[i])})
return space
def polspace(alpha_min,alpha_max,rho_min,rho_max,npolvar):
space=[]
for i in range(npolvar):
apol=str(i)
space.append({'name': 'alpha'+apol, 'type': 'continuous', 'domain': (alpha_min[i],alpha_max[i])})
space.append({'name': 'rho'+apol, 'type': 'continuous', 'domain': (rho_min[i],rho_max[i])})
return space
########################################################################
# K E R N E L S
########################################################################
def lamkernel(rbf,stdperiodic):
if rbf==1: kernel=GPy.kern.RBF(input_dim=nlamvar,variance=varf,lengthscale=lf,ARD=ARD)
if rbf==1 and stdperiodic==1:
kernel1=GPy.kern.RBF(input_dim=nlamvar,variance=varf,lengthscale=lf,ARD=ARD)
kernel2=GPy.kern.StdPeriodic(input_dim=nlamvar,variance=varf,period=None,lengthscale=None,ARD1=ARD,ARD2=ARD)
kernel=kernel1*kernel2
return kernel
def polkernel(rbf,stdperiodic):
if rbf==1: kernel=GPy.kern.RBF(input_dim=2*npolvar,variance=varf,lengthscale=lf,ARD=ARD)
return kernel
########################################################################
# C O S T F U N C T I O N S
########################################################################
def error_relat(valexact,valcomp,neex):
if valexact == 0.0 or valcomp == 0.0:
error=5./neex
else:
error=abs((valexact-valcomp)/valexact)*100
return error
def loss_sumwE():
global imin
neex=autovarlambda.eei_ls.ne
enere=autovarlambda.eicompare.enere
enerc=autovarlambda.eicompare.enerc
loss=0.0
if igi==1: weight=autovarlambda.cei_ls.gic
if igi==0: weight=autovarlambda.cei_ls.gic*0+1.
for i in range(imin,neex): # consider ground energy and/or-only excited states
erp=error_relat(enere[i],enerc[i],neex)
if ifun==1: erp=erp*erp
loss=loss + weight[i]*erp
# print(' {} {:.4f} {:.4f} {:.4f} {:.4f} {:.4f}'.format(i,enere[i],enerc[i],erp,weight[i],loss))
return loss
def loss_sumaki():
global imin,ntran,akinorm
ntrtot=autovarlambda.akicompare.ntrtot
if ntran>ntrtot: ntran=ntrtot
vakie=autovarlambda.akicompare.vakie
vakic=autovarlambda.akicompare.vakic
facc=autovarlambda.akicompare.vfacce
loss=0.0
for i in range(imin,ntran): # consider a certain number of transitions
erp=error_relat(vakie[i],vakic[i],ntran)
if akinorm=='yes': erp=erp/facc[i]
if ifun==1: erp=erp*erp
loss=loss+erp
# print(' {} {:.5e} {:.5e} {:.5f} {:.5f} {:.5f}'.format(i,vakie[i],vakic[i],facc[i],erp,loss))
return loss
def loss_total(ii,x):
global cost
lx=len(x)
xp='{:4d}: [ '
for i in range(lx):
xp=xp+'{vp['+str(i)+']:.{prec}f} '
xp=xp+'] // {l1:.{prec}f}'
if cost=='ener':
lei=loss_sumwE()
loss=lei
# print(xp.format(ii,vp=x,l1=lei,prec=4),file=fener)
print(xp.format(ii,vp=x,l1=lei,prec=4))
if cost=='aki':
laki=loss_sumaki()
loss=laki
# print(xp.format(ii,vp=x,l1=lei,l2=laki,lt=loss,prec=4),file=fener)
print(xp.format(ii,vp=x,l1=laki,lt=loss,prec=4))
if cost=='ener+aki':
lei=loss_sumwE()
laki=loss_sumaki()
loss=lei+laki
xp=xp+' + {l2:.{prec}e} = {lt:.{prec}e}'
# print(xp.format(ii,vp=x,l1=lei,l2=laki,lt=loss,prec=4),file=fener)
print(xp.format(ii,vp=x,l1=lei,l2=laki,lt=loss,prec=4))
return loss
########################################################################
# F U N C T I O N S
########################################################################
def py_runAS_lam(lam,nlamvar):
check_errlog()
autovarlambda.run_varlam(lam,nlamvar)
check_errlog()
autovarlambda.inp_comp()
autovarlambda.compare_ei()
autovarlambda.compare_aki()
return
def py_runAS_pol(pol,npolvar):
check_errlog()
autovarlambda.run_varpol(pol,npolvar)
check_errlog()
autovarlambda.inp_comp()
autovarlambda.compare_ei()
autovarlambda.compare_aki()
return
def var_lam(x):
global ii
ii=ii+1
lam=x[0,:]
py_runAS_lam(lam,nlamvar)
loss=loss_total(ii,lam)
# print(lam,loss)
return loss
def var_pol(x):
global ii,npolvar
pol=x[0,:]
ii=ii+1
py_runAS_pol(pol,npolvar)
loss=loss_total(ii,pol)
return loss
def run_bo(iseed,space,kernel,function,initer,initmap,maxevals,varf,lf,noise_var,exact_feval,optimize_restarts,ARD,xi):
seed(iseed)
enere, enerc, neex=init_var()
cpdas='cp das_' + str(cfgs) + 'CFG das'
os.system(cpdas)
autovarlambda.open_files()
autovarlambda.inp_das()
autovarlambda.inp_obs()
dummyne=autovarlambda.eei_ls.ne.copy()
if nener != dummyne:
autovarlambda.eei_ls.ne=nener
def_filename()
if ncfg != cfgs:
print(' >>>> configuration mismatch !!!! ')
sys.exit()
open_fout()
t0=time.time()
global ii
ii=0
model=GPyOpt.models.GPModel(kernel=kernel,noise_var=noise_var,exact_feval=exact_feval,
optimizer='lbfgs',max_iters=1500,optimize_restarts=optimize_restarts,
verbose=False,ARD=ARD)
dspace=GPyOpt.Design_space(space=space)
objective=GPyOpt.core.task.SingleObjective(function)
initial_design=GPyOpt.experiment_design.initial_design(initmap,dspace,initer)
acquisition_optimizer=GPyOpt.optimization.AcquisitionOptimizer(dspace, optimizer='lbfgs')
acquisition=GPyOpt.acquisitions.AcquisitionEI(model,dspace,acquisition_optimizer,jitter=xi)
evaluator=GPyOpt.core.evaluators.Sequential(acquisition)
myBopt=GPyOpt.methods.ModularBayesianOptimization(model,dspace,objective,acquisition,
evaluator,X_init=initial_design,normalize_Y=True,
model_update_interval=1)
myBopt.run_optimization(maxevals,eps=1e-7,verbosity=False)
myBopt.save_evaluations(filename+'.dat')
t1=time.time()
total=(t1-t0)/60.
print_opt(total,myBopt)
return
########################################################################
# M A I N P R O G R A M
########################################################################
# call input data
data_input()
print_input()
#sys.exit()
# other important variables
noise_var=None
exact_feval=True
ARD=True
varf=2.5
lf=0.1
xi=afweight # input
optimize_restarts=5
#minlam=[]
#maxlam=[]
################################
# POLARIZATION POTENTIAL #
################################
ioptpol=0
if ioptpol==1:
print('\n===>>> Optimize Polarization Potential <<<===\n')
print('\n * cost = ',cost)
# define values for the polarization parameters' space
alpha_max=[0.200,0.200,0.200]
alpha_min=[0.001,0.001,0.001]
rho_max=[1.500,1.500,1.500]
rho_min=[0.200,0.200,0.200]
npolvar=3
if npolvar != len(alpha_min):
print('npolvar .ne. alpha and rho dimension')
fvar='pol'
space=polspace(alpha_min,alpha_max,rho_min,rho_max,npolvar)
kernel=polkernel(rbf=1,stdperiodic=0)
run_bo(iseed,space,kernel,var_pol,initer,initmap,maxevals,varf,lf,noise_var,exact_feval,optimize_restarts,ARD,xi)
os.system('cp Be*.das das_6CFG')
os.system('if [ ! -d pol ]; then mkdir pol; fi')
os.system('mv Be* pol/.')
#########################
# MODEL POTENTIAL #
#########################
ioptmod=1
if ioptmod==1:
print('\n===>>> Optimize Model Potential <<<===\n')
print('\n * cost = ',cost)
fvar='lam'
akinorm='yes' # normalizar los errores relativos de Aki
space=lamspace(minlam,maxlam)
kernel=lamkernel(rbf=1,stdperiodic=0)
run_bo(iseed,space,kernel,var_lam,initer,initmap,maxevals,varf,lf,noise_var,exact_feval,optimize_restarts,ARD,xi)
clean_up()