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beginning to fold in HOD code with jeremy tinker's approval
This commit is contained in:
P.M. Sutter
parent
d8108d3a8e
commit
44cd0eb71f
95 changed files with 21950 additions and 0 deletions
425
c_tools/hod/mcmc_with_errors.c
Normal file
425
c_tools/hod/mcmc_with_errors.c
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#ifdef PARALLEL
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#include <mpi.h>
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#endif
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#include "header.h"
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/* External functions from wp_minimization.c
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*/
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void wp_input(void);
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double mcmc_initialize(double *a, double **cov1, double *avg1);
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/* Internal functions.
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*/
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void choose_bias_fit(void);
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double chi2_wp_wrapper(double *);
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void choose_dndM_fit(void);
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/******************************************************************
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*
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* HOD.free[] also controls which variables will be held constant/vary
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* during MCMC minimization. Since this routine will also so z-space
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* minimization if requested, indices>6 are cosmological.
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*
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* i variable
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* --- --------
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* [1] -> M_min
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* [2] -> M1
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* [3] -> alpha
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* [4] -> M_cut
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* [5] -> sigmaM
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* [6] -> CVIR_FAC
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* [7] -> OMEGA_M
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* [8] -> SIGMA_8
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* [9] -> VBIAS
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*
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*/
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void mcmc_minimization()
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{
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int EJENK=1,EBIAS=0;
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double stepfac=1;
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double error=1,tolerance=0,**cov1,**tmp,*a,*avg1,chi2,chi2prev,
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**evect,*eval,*aprev,*atemp,**tmp1;
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int n,i,j,nrot,niter=0,count=0;
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long IDUM=-555;
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float original_jenkins_a,
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original_jenkins_b,
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original_jenkins_c;
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int *pcheck,pcnt,ptot=10;
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original_jenkins_a=JENKINS_A;
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original_jenkins_b=JENKINS_B;
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original_jenkins_c=JENKINS_C;
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pcheck=calloc(ptot,sizeof(int));
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if(MCMC>1)
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wp.esys=0.08;
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wp_input();
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Work.imodel=2;
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Work.chi2=1;
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MCMC=Task.MCMC;
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OUTPUT=0;
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srand48(32498793);
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/* Find the number of free parameters in the minimization
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* for the real-space correlation function.
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*/
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for(n=0,i=1;i<=10;++i)
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{
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n+=HOD.free[i];
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if(OUTPUT)
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printf("mcmc_min> free[%i] = %d\n",i,HOD.free[i]);
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}
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wp.ncf=n;
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if(OUTPUT)
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printf("mcmc_min> %d free parameters\n",n);
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a=dvector(1,n);
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aprev=dvector(1,n);
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atemp=dvector(1,n);
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cov1=dmatrix(1,n,1,n);
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avg1=dvector(1,n);
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tmp=dmatrix(1,n,1,n);
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tmp1=dmatrix(1,n,1,1);
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evect=dmatrix(1,n,1,n);
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eval=dvector(1,n);
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chi2prev=mcmc_initialize(a,cov1,avg1);
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niter++;
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for(i=1;i<=n;++i)
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aprev[i] = a[i];
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IDUM=IDUM_MCMC;
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pcnt=0;
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pcheck[pcnt]=1;
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stepfac=1;
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while(niter<10)
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{
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pcnt++;
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if(pcnt==ptot)
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{
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for(j=i=0;i<ptot;++i)j+=pcheck[i];
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stepfac = stepfac*pow(0.9,5-j);
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printf("STEPFAC %f %d %d\n",stepfac,j,count);
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pcnt=0;
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}
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for(i=1;i<=n;++i)
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a[i] = (1+gasdev(&IDUM)*0.004*stepfac)*aprev[i];
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if(MCMC>1)
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{
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RESET_COSMOLOGY++;
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j=0;
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for(i=1;i<=6;++i)if(HOD.free[i])j++;
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i=6;
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if(HOD.free[++i])OMEGA_M = a[++j];
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if(HOD.free[++i])SIGMA_8 = a[++j];
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if(HOD.free[++i])VBIAS = a[++j];
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if(HOD.free[++i])VBIAS_C = a[++j];
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}
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/* Take the parameters of the Jenkins
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* mass function from Gaussian distributions.
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*/
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/*
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RESET_COSMOLOGY++;
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if(EJENK)
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choose_dndM_fit();
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if(EBIAS)
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choose_bias_fit();
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*/
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chi2=chi2_wp_wrapper(a);
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if(MCMC>1)chi2+=chi2_zspace(a);
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printf("TRY %d ",++count);
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for(i=1;i<=n;++i)
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printf("%.4e ",a[i]);
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printf("%e\n",chi2);fflush(stdout);
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pcheck[pcnt]=0;
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if(!(chi2<chi2prev || drand48() <= exp(-(chi2-chi2prev)/2)))
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continue;
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pcheck[pcnt]=1;
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niter++;
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for(i=1;i<=n;++i)
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avg1[i] += a[i];
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for(i=1;i<=n;++i)
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aprev[i] = a[i];
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for(i=1;i<=n;++i)
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for(j=1;j<=n;++j)
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cov1[i][j] += a[i]*a[j];
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chi2prev=chi2;
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printf("ACCEPT %d %d ",niter,count);
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for(i=1;i<=n;++i)
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printf("%e ",a[i]);
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printf("%e\n",chi2);fflush(stdout);
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}
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stepfac=1.0;
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pcnt=-1;
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while(error>tolerance)
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{
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pcnt++;
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if(pcnt==ptot)
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{
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for(j=i=0;i<ptot;++i)j+=pcheck[i];
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stepfac = stepfac*pow(0.9,5-j);
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printf("STEPFAC %f %d %d\n",stepfac,j,count);
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pcnt=0;
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}
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stepfac=1;
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for(i=1;i<=n;++i)
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for(j=1;j<=n;++j)
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tmp[i][j] = cov1[i][j]/niter - avg1[i]*avg1[j]/niter/niter;
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jacobi(tmp,n,eval,evect,&nrot);
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gaussj(evect,n,tmp1,1);
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for(i=1;i<=n;++i)
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atemp[i] = gasdev(&IDUM)*sqrt(eval[i])*stepfac;
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for(i=1;i<=n;++i)
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for(a[i]=0,j=1;j<=n;++j)
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a[i] += atemp[j]*evect[j][i];
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for(i=1;i<=n;++i)
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a[i] += aprev[i];
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printf("BOO %d %f %f\n",niter,a[1],a[2]);
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fflush(stdout);
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if(MCMC>1)
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{
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RESET_COSMOLOGY++;
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j=0;
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for(i=1;i<=6;++i)if(HOD.free[i])j++;
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i=6;
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if(HOD.free[++i])OMEGA_M = a[++j];
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if(HOD.free[++i])SIGMA_8 = a[++j];
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if(HOD.free[++i])VBIAS = a[++j];
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if(HOD.free[++i])VBIAS_C = a[++j];
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}
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/* Take the parameters of the Jenkins
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* mass function from Gaussian distributions.
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*/
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RESET_COSMOLOGY++;
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if(EJENK)
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{
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/*
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JENKINS_A = original_jenkins_a*(1+gasdev(&IDUM)*sqrt(3.919662e-07));
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JENKINS_B = original_jenkins_b*(1+gasdev(&IDUM)*sqrt(9.265636e-06));
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JENKINS_C = original_jenkins_c*(1+gasdev(&IDUM)*sqrt(2.365370e-03));
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choose_dndM_fit();
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*/
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}
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if(EBIAS)
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choose_bias_fit();
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chi2=chi2_wp_wrapper(a);
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if(MCMC>1)chi2+=chi2_zspace(a);
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printf("TRY %d ",++count);
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for(i=1;i<=n;++i)
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printf("%.4e ",a[i]);
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printf("%e\n",chi2);fflush(stdout);
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pcheck[pcnt]=0;
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if(!(chi2<chi2prev || drand48() <= exp(-(chi2-chi2prev)/2)))
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continue;
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pcheck[pcnt]=1;
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niter++;
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for(i=1;i<=n;++i)
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avg1[i] += a[i];
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for(i=1;i<=n;++i)
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aprev[i] = a[i];
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for(i=1;i<=n;++i)
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for(j=1;j<=n;++j)
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cov1[i][j] += a[i]*a[j];
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chi2prev=chi2;
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printf("ACCEPT %d %d ",niter,count);
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for(i=1;i<=n;++i)
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printf("%e ",a[i]);
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printf("%e\n",chi2);fflush(stdout);
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}
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}
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double chi2_wp_wrapper(double *a)
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{
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static int flag=1;
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static double *b;
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int i,j;
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if(flag)
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{
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b=dvector(1,100);
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flag=0;
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}
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for(j=0,i=1;i<=6;++i)
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if(HOD.free[i])
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if(a[++j]<=0)return(1.0E7);
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i=0;j=0;
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if(HOD.free[++i]){j++;b[j]=pow(10.0,a[j]);}
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if(HOD.free[++i]){j++;b[j]=pow(10.0,a[j]);}
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if(HOD.free[++i]){j++;b[j]=a[j];}
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if(HOD.free[++i]){j++;b[j]=pow(10.0,a[j]);}
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if(HOD.free[++i]){j++;b[j]=a[j];}
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if(HOD.free[++i]){j++;b[j]=a[j];}
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return(chi2_wp(b));
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}
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double mcmc_initialize(double *a, double **cov1, double *avg1)
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{
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int i,j=0;
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double x1,x2;
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long IDUM = -556;
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i=0;j=0;
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if(HOD.free[++i])a[++j]=log10(HOD.M_min);
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if(HOD.free[++i])a[++j]=log10(HOD.M1);
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if(HOD.free[++i])a[++j]=HOD.alpha;
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if(HOD.free[++i])a[++j]=log10(HOD.M_cut);
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if(HOD.free[++i])a[++j]=HOD.sigma_logM;
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if(HOD.free[++i])a[++j]=CVIR_FAC;
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if(MCMC>1)
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{
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if(HOD.free[++i])a[++j]=OMEGA_M;
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if(HOD.free[++i])a[++j]=SIGMA_8;
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if(HOD.free[++i])a[++j]=VBIAS;
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if(HOD.free[++i])a[++j]=VBIAS_C;
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}
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printf("INITIAL VALUES: ");
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for(i=1;i<=wp.ncf;++i)printf("%e ",a[i]);
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printf("\n");
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for(i=1;i<=wp.ncf;++i)
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{
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avg1[i]=a[i];
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for(j=1;j<=wp.ncf;++j)
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cov1[i][j]=a[i]*a[j];
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}
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if(MCMC>1)
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{
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RESET_COSMOLOGY++;
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j=0;
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for(i=1;i<=6;++i)if(HOD.free[i])j++;
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i=6;
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if(HOD.free[++i])OMEGA_M = a[++j];
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if(HOD.free[++i])SIGMA_8 = a[++j];
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if(HOD.free[++i])VBIAS = a[++j];
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if(HOD.free[++i])VBIAS_C = a[++j];
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}
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x1=chi2_wp_wrapper(a);
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if(MCMC>1)
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x2=chi2_zspace(a);
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else
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x2=0;
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printf("TRY 0 ");
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for(i=1;i<=wp.ncf;++i)
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printf("%.4e ",a[i]);
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printf("%e\n",x1+x2);fflush(stdout);
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printf("INITIAL CHI2: %e %e\n",x1,x2);
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fflush(stdout);
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return(x1+x2);
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}
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void choose_bias_fit()
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{
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static long IDUM1=-444;
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static int flag=1,n;
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static float *a,*b,*c;
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FILE *fp;
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int i;
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char string[1000];
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if(flag)
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{
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flag=0;
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fp=openfile("/home/tinker/TABLES/bias_errors.dat");
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n=filesize(fp);
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a=vector(1,n);
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b=vector(1,n);
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c=vector(1,n);
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for(i=1;i<=n;++i)
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{
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fscanf(fp,"%f %f %f",&a[i],&b[i],&c[i]);
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fgets(string,1000,fp);
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}
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}
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i=(int)(ran1(&IDUM1)*n) + 1;
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BIAS_A = a[i];
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BIAS_B = b[i];
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BIAS_C = c[i];
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/*
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printf("BIAS %f %f %f\n",a[i],b[i],c[i]);
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*/
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}
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void choose_dndM_fit()
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{
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static long IDUM1=-444;
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static int flag=1,n;
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static float *a,*b,*c,*d,*e;
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FILE *fp;
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int i;
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char string[1000];
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if(flag)
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{
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flag=0;
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fp=openfile("/home/tinker/TABLES/dndM_errors.dat");
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n=filesize(fp);
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a=vector(1,n);
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b=vector(1,n);
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c=vector(1,n);
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d=vector(1,n);
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e=vector(1,n);
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for(i=1;i<=n;++i)
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{
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fscanf(fp,"%f %f %f %f %f",&a[i],&b[i],&c[i],&d[i],&e[i]);
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fgets(string,1000,fp);
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}
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}
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i=(int)(ran1(&IDUM1)*n) + 1;
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DNDM_PARAMS[1] = a[i];
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DNDM_PARAMS[2] = b[i];
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DNDM_PARAMS[3] = c[i];
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DNDM_PARAMS[4] = d[i];
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DNDM_PARAMS[5] = e[i];
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}
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