/*
Genome-wide Efficient Mixed Model Association (GEMMA)
Copyright © 2011-2017, Xiang Zhou
Copyright © 2017, Peter Carbonetto
Copyright © 2017, Pjotr Prins
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __PARAM_H__
#define __PARAM_H__
#include "debug.h"
#include "gsl/gsl_matrix.h"
#include <gsl/gsl_rng.h>
#include "gsl/gsl_vector.h"
#include <map>
#include <set>
#include <vector>
#define K_BATCH_SIZE 20000 // #snps used for batched K
#define DEFAULT_PACE 1000 // for display only
using namespace std;
class SNPINFO {
public:
string chr;
string rs_number;
double cM;
long int base_position;
string a_minor;
string a_major;
size_t n_miss;
double missingness;
double maf;
size_t n_idv; // Number of non-missing individuals.
size_t n_nb; // Number of neighbours on the right hand side.
size_t file_position; // SNP location in file.
};
// Results for LMM.
class SUMSTAT {
public:
double beta; // REML estimator for beta.
double se; // SE for beta.
double lambda_remle; // REML estimator for lambda.
double lambda_mle; // MLE estimator for lambda.
double p_wald; // p value from a Wald test.
double p_lrt; // p value from a likelihood ratio test.
double p_score; // p value from a score test.
double logl_H1; // log likelihood under the alternative
// hypothesis as a measure of goodness of fit,
// see https://github.com/genetics-statistics/GEMMA/issues/81
};
// Results for mvLMM.
class MPHSUMSTAT {
public:
vector<double> v_beta; // REML estimator for beta.
double p_wald; // p value from a Wald test.
double p_lrt; // p value from a likelihood ratio test.
double p_score; // p value from a score test.
vector<double> v_Vg; // Estimator for Vg, right half.
vector<double> v_Ve; // Estimator for Ve, right half.
vector<double> v_Vbeta; // Estimator for Vbeta, right half.
};
// Hyper-parameters for BSLMM.
class HYPBSLMM {
public:
double h;
double pve;
double rho;
double pge;
double logp;
size_t n_gamma;
};
// Header class.
class HEADER {
public:
size_t rs_col;
size_t chr_col;
size_t pos_col;
size_t cm_col;
size_t a1_col;
size_t a0_col;
size_t z_col;
size_t beta_col;
size_t sebeta_col;
size_t chisq_col;
size_t p_col;
size_t n_col;
size_t nmis_col;
size_t nobs_col;
size_t ncase_col;
size_t ncontrol_col;
size_t af_col;
size_t var_col;
size_t ws_col;
size_t cor_col;
size_t coln; // Number of columns.
set<size_t> catc_col;
set<size_t> catd_col;
};
class PARAM {
public:
// IO-related parameters
// bool mode_check = true; // run data checks (slower)
// bool mode_strict = false; // exit on some data checks
// bool mode_silence;
// bool mode_debug = false;
// uint issue; // enable tests for issue on github tracker
uint a_mode; // Analysis mode, 1/2/3/4 for Frequentist tests
int k_mode; // Kinship read mode: 1: n by n matrix, 2: id/id/k_value;
vector<size_t> p_column; // Which phenotype column needs analysis.
size_t d_pace = DEFAULT_PACE; // Display pace (-pace switch)
string file_bfile, file_mbfile;
string file_geno, file_mgeno;
string file_pheno;
string file_anno; // Optional.
string file_gxe; // Optional.
string file_cvt; // Optional.
string file_cat, file_mcat;
string file_catc, file_mcatc;
string file_var;
string file_beta;
string file_cor;
string file_kin, file_mk;
string file_ku, file_kd;
string file_study, file_mstudy;
string file_ref, file_mref;
string file_weight, file_wsnp, file_wcat;
string file_out;
string file_bf, file_hyp;
string path_out; // -outdir switch
// string checkpoint; // -checkpoint switch is global
string file_epm; // Estimated parameter file.
string file_ebv; // Estimated breeding value file.
string file_log; // Log file containing mean estimate.
string file_read; // File containing total number of reads.
string file_gene; // Gene expression file.
string file_snps; // File containing analyzed SNPs or genes.
string file_ksnps; // File SNPs for computing K
string file_gwasnps; // File SNPs for computing GWAS
// QC-related parameters.
double miss_level;
double maf_level;
double hwe_level;
double r2_level;
// LMM-related parameters.
string loco;
double l_min;
double l_max;
size_t n_region;
double l_mle_null, l_remle_null;
double logl_mle_H0, logl_remle_H0;
double pve_null, pve_se_null, pve_total, se_pve_total;
double vg_remle_null, ve_remle_null, vg_mle_null, ve_mle_null;
vector<double> Vg_remle_null, Ve_remle_null, Vg_mle_null, Ve_mle_null;
vector<double> VVg_remle_null, VVe_remle_null, VVg_mle_null;
vector<double> VVe_mle_null;
vector<double> beta_remle_null, se_beta_remle_null, beta_mle_null;
vector<double> se_beta_mle_null;
double p_nr;
double em_prec, nr_prec;
size_t em_iter, nr_iter;
size_t crt;
double pheno_mean; // Phenotype mean from BSLMM fitting or prediction.
// For fitting multiple variance components.
// The first 3 are of size (n_vc), and the next 2 are of size n_vc+1.
bool noconstrain;
vector<double> v_traceG;
vector<double> v_pve;
vector<double> v_se_pve;
vector<double> v_sigma2;
vector<double> v_se_sigma2;
vector<double> v_enrich;
vector<double> v_se_enrich;
vector<double> v_beta;
vector<double> v_se_beta;
// BSLMM/MCMC-related parameters.
double h_min, h_max, h_scale; // Priors for h.
double rho_min, rho_max, rho_scale; // Priors for rho.
double logp_min, logp_max, logp_scale; // Priors for log(pi).
size_t h_ngrid, rho_ngrid;
size_t s_min, s_max; // Min & max. number of gammas.
size_t w_step; // # warm up/burn in iter.
size_t s_step; // # sampling iterations.
size_t r_pace; // Record pace.
size_t w_pace; // Write pace.
size_t n_accept; // Number of acceptance.
size_t n_mh; // # MH steps in each iter.
double geo_mean; // Mean of geometric dist.
long int randseed; // holds -seed parameter
gsl_rng *gsl_r = NULL; // Track the randomizer
double trace_G;
HYPBSLMM cHyp_initial;
// VARCOV-related parameters.
double window_cm;
size_t window_bp;
size_t window_ns;
// vc-related parameters.
size_t n_block;
// Summary statistics.
bool error;
// Number of individuals.
size_t ni_total, ni_test, ni_cvt, ni_study, ni_ref;
size_t ni_max = 0; // -nind switch for testing purposes
// Number of observed and missing phenotypes.
size_t np_obs, np_miss;
// Number of SNPs.
size_t ns_total, ns_test, ns_study, ns_ref;
size_t ng_total, ng_test; // Number of genes.
size_t ni_control, ni_case; // Number of controls and number of cases.
size_t ni_subsample; // Number of subsampled individuals.
size_t n_cvt; // Number of covariates.
size_t n_cat; // Number of continuous categories.
size_t n_ph; // Number of phenotypes.
size_t n_vc; // Number of variance components
// (including the diagonal matrix).
double time_total; // Record total time.
double time_G; // Time spent on reading files the
// second time and calculate K.
double time_eigen; // Time spent on eigen-decomposition.
double time_UtX; // Time spent on calculating UX and Uy.
double time_UtZ; // Time calculating UtZ for probit BSLMM.
double time_opt; // Time on optimization iterations/MCMC.
double time_Omega; // Time spent on calculating Omega.
double time_hyp; // Time sampling hyperparameters in PMM.
double time_Proposal; // Time spent on constructing the
// proposal distribution (i.e. the
// initial LMM or LM analysis).
// Data.
// Vector recording all phenotypes (NA replaced with -9).
vector<vector<double>> pheno;
// Vector recording all covariates (NA replaced with -9).
vector<vector<double>> cvt;
// Vector recording all covariates (NA replaced with -9).
vector<double> gxe;
// Vector recording weights for the individuals, which is
// useful for animal breeding studies.
vector<double> weight;
// Matrix recording when a phenotype is missing for an
// individual; 0 missing, 1 available.
vector<vector<int>> indicator_pheno;
// Indicator for individuals (phenotypes): 0 missing, 1
// available for analysis
vector<int> indicator_idv;
// Sequence indicator for SNPs: 0 ignored because of (a) maf,
// (b) miss, (c) non-poly; 1 available for analysis.
vector<int> indicator_snp;
// Sequence indicator for SNPs: 0 ignored because of (a) maf,
// (b) miss, (c) non-poly; 1 available for analysis.
vector<vector<int>> mindicator_snp;
// Indicator for covariates: 0 missing, 1 available for
// analysis.
vector<int> indicator_cvt;
// Indicator for gxe: 0 missing, 1 available for analysis.
vector<int> indicator_gxe;
// Indicator for weight: 0 missing, 1 available for analysis.
vector<int> indicator_weight;
// Indicator for estimated breeding value file: 0 missing, 1
// available for analysis.
vector<int> indicator_bv;
// Indicator for read file: 0 missing, 1 available for analysis.
vector<int> indicator_read;
vector<double> vec_read; // Total number of reads.
vector<double> vec_bv; // Breeding values.
vector<size_t> est_column;
map<string, int> mapID2num; // Map small ID to number, 0 to n-1.
map<string, string> mapRS2chr; // Map rs# to chromosome location.
map<string, long int> mapRS2bp; // Map rs# to base position.
map<string, double> mapRS2cM; // Map rs# to cM.
map<string, double> mapRS2est; // Map rs# to parameters.
map<string, size_t> mapRS2cat; // Map rs# to category number.
map<string, vector<double>> mapRS2catc; // Map rs# to cont. cat's.
map<string, double> mapRS2wsnp; // Map rs# to SNP weights.
map<string, vector<double>> mapRS2wcat; // Map rs# to SNP cat weights.
vector<SNPINFO> snpInfo; // Record SNP information.
vector<vector<SNPINFO>> msnpInfo; // Record SNP information.
set<string> setSnps; // Set of snps for analysis (-snps).
set<string> setKSnps; // Set of snps for K (-ksnps and LOCO)
set<string> setGWASnps; // Set of snps for GWA (-gwasnps and LOCO)
// Constructor and destructor
PARAM();
~PARAM();
// Functions.
void ReadFiles();
void CheckParam();
void CheckData();
void PrintSummary();
void ReadGenotypes(gsl_matrix *UtX, gsl_matrix *K, const bool calc_K);
void ReadGenotypes(vector<vector<unsigned char>> &Xt, gsl_matrix *K,
const bool calc_K);
void CheckCvt();
void CopyCvt(gsl_matrix *W);
void CopyA(size_t flag, gsl_matrix *A);
void CopyGxe(gsl_vector *gxe);
void CopyWeight(gsl_vector *w);
void ProcessCvtPhen();
void CopyCvtPhen(gsl_matrix *W, gsl_vector *y, size_t flag);
void CopyCvtPhen(gsl_matrix *W, gsl_matrix *Y, size_t flag);
void CalcKin(gsl_matrix *matrix_kin);
void CalcS(const map<string, double> &mapRS2wA,
const map<string, double> &mapRS2wK, const gsl_matrix *W,
gsl_matrix *A, gsl_matrix *K, gsl_matrix *S, gsl_matrix *Svar,
gsl_vector *ns);
void WriteVector(const gsl_vector *q, const gsl_vector *s,
const size_t n_total, const string suffix);
void WriteVar(const string suffix);
void WriteMatrix(const gsl_matrix *matrix_U, const string suffix);
void WriteVector(const gsl_vector *vector_D, const string suffix);
void CopyRead(gsl_vector *log_N);
void ObtainWeight(const set<string> &setSnps_beta,
map<string, double> &mapRS2wK);
void UpdateWeight(const size_t pve_flag, const map<string, double> &mapRS2wK,
const size_t ni_test, const gsl_vector *ns,
map<string, double> &mapRS2wA);
void UpdateSNPnZ(const map<string, double> &mapRS2wA,
const map<string, string> &mapRS2A1,
const map<string, double> &mapRS2z, gsl_vector *w,
gsl_vector *z, vector<size_t> &vec_cat);
void UpdateSNP(const map<string, double> &mapRS2wA);
};
size_t GetabIndex(const size_t a, const size_t b, const size_t n_cvt);
#endif
