!
!  CHUONG TRINH thu nghiem hieu chinh KQ mo hinh Hybrid Statistical-Dynamical method 
!  Cac Mo hinh thong ke duoc su dung:
!  1) ANN: 
!  2) HQTT: Hoi quy tuyen tinh nhieu bien (Ket qua giong voi HQTB)
!  3) LAD: Least Absolute Deviation
!  4) LMV: Minimax
!  Cac nhan to du bao: Cac bien du bao cua mo hinh 

   PROGRAM BC_ANN 
   Use Netcdf

   Integer, Parameter :: Yr1=2011, Yr2=2021, Nmon=12, Nreg=7, NLead=6, Nvar=17, Nmem=6, Nfile=9
   Integer, Parameter :: Nyrs=(Yr2-Yr1+1)
   Real, Parameter    :: Miss=-99.
   Character (Len=4)  :: vname(Nvar)=(/"pr_o","t2_o","tx_o","tm_o","pr","t2","tx","tm", &
                                       "h500","h850","olr","q2","rh2","slp","u200","u850","w700"/)
   Integer            :: Fcs_mon, Nyr1, NMax, Ncase, Ntc_var

   Character (Len=255) :: Fname
   Real, Allocatable   :: lon(:),lat(:),Regs(:,:), X3d(:,:,:)
   Integer             :: Nlon, Nlat, Ntime, Ngrd, ilon, ilat, it
   Integer             :: Mvars, imem
   Real, Allocatable   :: Dat_All(:,:,:,:,:,:) ! (Nlon,Nlat,Ntime,Nvar,NLead,Nmem)
   Real, Allocatable   :: Bias_Cli(:,:,:,:)  ! (Nlon,Nlat,NLead,Nmon)    - Model Cli. Bias = Model_Fcs - Obs ==> Corrected=Model_Fcs-Bias
   Real, Allocatable   :: X_inp(:,:), Y_inp(:), Yest(:,:), Yhq(:,:)
   Character (Len=5)   :: yvarn, Model_nm
   !--------------------------------------------------------------------------------

   ! Verification:

   Real, Allocatable, Dimension(:,:,:,:) :: Pr_ME, Pr_MAE, Pr_RME, Pr_RMAE, Pr_COR, Pr_Pval, Pr_AV  ! (Nlon,Nlat,NLead,Nmon)
   Real, Allocatable, Dimension(:,:,:,:) :: Pr_CORbc, Pr_Pvalbc, Pr_AVbc   ! between ANN and BC

   Integer :: Nyear, imon      ! Tong so nam co SL va chi so thang
   !--------------------------------------------------------------------------------
   ! ANN:
   character (len=250) :: input_file, output_file, save_file
   logical :: training_mode

   ! Use for calculating scaling factors
   Integer :: Nsample, Nepoc, Nsample1

   Real,allocatable, Dimension(:,:) :: Inputs, Outputs, Inputs_X, Outputs_Y
   Real,allocatable, Dimension(:)   :: min_in, max_in, min_out, max_out
   Real :: mean_error, mean_error_check
   !-------------------------------------------------------------------------------
    integer ::  Nin, Nhidden, Nout, iin, ihid, iout
    integer :: i,j,k

    Real,allocatable, Dimension(:,:) :: weight_ih, weight_ho, moment_ih, moment_ho
    Real,allocatable, Dimension(:)   :: fin, fhid, fout, ftarget, delta_o, delta_h
   ! Training
    Real :: learning_rate0, learning_rate,momentum, error, tmp, mintmp
    logical :: debug
   !--------------------------------------------------------------------------------
   Integer :: Op_Nhidden, Op_Nepoc   ! Optimal values
   Real    :: Op_learning_rate
   Real, Allocatable :: X4d(:,:,:,:), F1d(:),O1d(:), X5d(:,:,:,:,:),Score_Cor(:,:,:), Score_AV(:,:,:) 
   Real, Allocatable :: xlon(:), xlat(:), xtime(:), xlev(:)
   Real, Allocatable :: X6d(:,:,:,:,:,:), BC_Cli(:,:,:,:)
   Integer :: Nlo, Nla, Nt, Nz
   !------------------- For ANN -------------------------------------------------------------
   Namelist /ann_info/ Nhidden,learning_rate,momentum,training_mode,Nepoc,debug
   Namelist /Model_info/ Model_nm, yvarn

!     Nhidden       =     5 !4        ! Number of hidden layers
!     learning_rate =   0.01
!     momentum      =  0.9 ! 10.0
!     training_mode = .false.       ! For training
!     Nepoc         =  1000        ! Iterative training times
!     debug         = .false.
   !--------------------------------------------------------------------------------

   Open (1, file="Namelist_ANN_Training.txt",Status="old")
   Read (1, ann_info)
   Read (1, Model_info)
   learning_rate0 = learning_rate
   training_mode  = .false.

   Fname="/home/tanpv/Data/562_VNU/Mask_VN_0.1.nc"
   Call rd_ncdf_2d (Fname,lon,lat,Nlon,Nlat,Regs,"reg") ! 7 sub-regs mask

!   Model_nm="clWRF";  yvarn="pr"
!   Do imem=1,1 !Nmem

      Fname="/home/tanpv/Progs/562_VNU/test/NC/Bias_Cli_"//trim(Model_nm)//"_"//trim(yvarn)//".nc"
      Call rd_ncdf_4d (Fname,xlon,xlat,xlev,xtime,Nlo,Nla,Nz,Nt,Bias_Cli,"bias")  ! Model Cli. Bias = Model_Fcs - Obs ==> Corrected=Model_Fcs-Bias 
      Call Read_all_data (Model_nm) !,imem)
      
      if (Allocated(Pr_RME)) Deallocate (Pr_RME); if (Allocated(Pr_RMAE)) Deallocate (Pr_RMAE); 
      if (Allocated(Pr_COR)) Deallocate (Pr_COR); if (Allocated(Pr_Pval)) Deallocate (Pr_Pval);
      if (Allocated(Pr_ME)) Deallocate (Pr_ME); if (Allocated(Pr_MAE)) Deallocate (Pr_MAE);
      if (Allocated(Pr_AV)) Deallocate (Pr_AV)
      if (Allocated(Pr_CORbc)) Deallocate (Pr_CORbc); if (Allocated(Pr_Pvalbc)) Deallocate (Pr_Pvalbc); if (Allocated(Pr_AVbc)) Deallocate (Pr_AVbc)

      Allocate (Pr_RME(Nlon,Nlat,NLead,Nmon),Pr_RMAE(Nlon,Nlat,NLead,Nmon),Pr_COR(Nlon,Nlat,NLead,Nmon),Pr_Pval(Nlon,Nlat,NLead,Nmon))
      Allocate (Pr_ME(Nlon,Nlat,NLead,Nmon),Pr_MAE(Nlon,Nlat,NLead,Nmon),Pr_AV(Nlon,Nlat,NLead,Nmon))
      Allocate (Pr_CORbc(Nlon,Nlat,NLead,Nmon),Pr_Pvalbc(Nlon,Nlat,NLead,Nmon),Pr_AVbc(Nlon,Nlat,NLead,Nmon))
      Pr_ME=Miss; Pr_MAE=Miss; Pr_RME=Miss; Pr_RMAE=Miss; Pr_COR=Miss; Pr_Pval=Miss; Pr_AV=Miss
      Pr_CORbc=Miss; Pr_Pvalbc=Miss; Pr_AVbc=Miss

      Allocate (Score_Cor(Nreg,Nmon,NLead), Score_AV(Nreg,Nmon,NLead))   ! Number of gridpoints with Cor>0, AV>0

      Nyear=Nyrs
      Do ilead=1,NLead
         if (Allocated(X6d)) Deallocate (X6d)
         Allocate (X6d(Nlon,Nlat,Nmon,Nyear,Nmem+1,4))   ! Nmem+1: Ens; 6th-dimension = 4: 1) OBS, 2) ANN est, 3) Cli BC, 4) Model out 
         Do imon=1,Nmon
            if (Allocated(X4d)) Deallocate (X4d)
            if (Allocated(X5d)) Deallocate (X5d); 
            if (Allocated(BC_Cli)) Deallocate(BC_Cli)
            Allocate (BC_Cli(Nlon,Nlat,Nyear,Nmem)); BC_Cli=Miss
            Allocate (X4d(Nlon,Nlat,4,Nyear),X5d(Nlon,Nlat,3,Nyear,Nmem)) ! Nyrs-1))  ! z=4: 1) Yobs, 2) Yest, 3) Ymodel, 4) Ymodel-Bias
            X4d=Miss; X5d=Miss
            write (output_file,"(2(A,I2.2),A)") "/home/tanpv/Progs/562_VNU/test/NC/Out_"//trim(yvarn)//"_"//trim(Model_nm)//"_mon_",imon,"_lead_",ilead,"_ens.nc"

            Do ireg=1,Nreg
               print*,"ireg,imon,ilead=",ireg,imon,ilead
               Do imem=1,Nmem
                  Call Make_Data (trim(yvarn),ireg,imon,ilead,imem)
                  if (ilead<NLead) then
                     write (save_file,"(3(A,I2.2),A)") "/home/tanpv/Progs/562_VNU/test/ANN_Save/Sav_"//trim(yvarn)//"_"//trim(Model_nm)//"_Reg_",ireg,"_mon_",imon,"_lead_",ilead,".txt"

                  elseif (ilead==NLead) then
                     write (save_file,"(3(A,I2.2),A)") "/home/tanpv/Progs/562_VNU/test/ANN_Save/Sav_"//trim(yvarn)//"_"//trim(Model_nm)//"_Reg_",ireg,"_mon_",imon,"_lead_",ilead-1,".txt"
                  endif
                  learning_rate = learning_rate0  !  0.05
                  print*,"Calling ANN..."
                  !Call ANN_2020
                  Call ANN_2023(Inputs_X,Outputs_Y,Nsample1,Mvars,1,Miss)
                  Call Convert_to_lat_lon (ireg,imem)
               Enddo
            Enddo
            Call Ens_all_members (ilead,imon)
            Call Verification (ilead,imon)
            Call Write_Out (output_file,yvarn)
            Call Store_6th_Arr (imon)
         Enddo
         write (Fname,"(A,I2.2,A)") "/home/tanpv/Progs/562_VNU/test/NC/4Dr_"//trim(Model_nm)//"_lead_",ilead,".nc"
         Call Write_Out_4_Drought (Fname,yvarn)
      Enddo
!      write(Fname,"(A,I1.1,A)") "Verification_scores_"//trim(Model_nm)//"_mem_",imem,".nc"
      write(Fname,"(A)") "Verification_scores_"//trim(yvarn)//"_"//trim(Model_nm)//"_ens.nc"
      Call Write_Verification (Fname)
!   Enddo
   Open (3,file="Score_Cor_AV_"//trim(yvarn)//"_"//trim(Model_nm)//"_ens.txt",status="Unknown")
   write (3,"(A)") "Percentage of grid points with positive correlation and added value"
   Do ilead=1,NLead
      write (3,"(A,I1.1,A)") "Lead time = ",ilead," month(s)"
      write (3,"(6x,A6,12I6)") " Reg. ",(imon, imon=1,Nmon)
      Do ireg=1,Nreg
         write (3,"(A6,I6,12F6.1)") "Cor - ",ireg,(Score_Cor(ireg,imon,ilead),imon=1,Nmon)
         write (3,"(2A6,12F6.1)") "AV -  "," ",(Score_AV (ireg,imon,ilead),imon=1,Nmon)
      Enddo
   Enddo
   Close (3)

   !--------------------------------------------------------------------------------
      
   CONTAINS
   !--------------------------------------------------------------------------------
   Subroutine Write_Out_4_Drought (Fname,yvarn)
      Character (Len=*) :: Fname,yvarn
      Integer, parameter :: Nvar=4
      Character (Len=250) :: var_nm, t_unit, var_ln, var_unit, lon_nm, lat_nm, z_nm, t_nm, var_longname
      Integer :: imon,iyr,imem,ivar,it, Nz
      Real, Allocatable :: Y4d(:,:,:,:), zlev(:), xtime(:)
      Character (Len=3), parameter :: vname(Nvar)=(/"obs","ann","mod","cli"/) 
      Character (Len=20), parameter :: v_ln(Nvar)=(/"observation","ANN estimation","Model Forecast","Climatology bias correction"/)
      ! X6d(Nlon,Nlat,Nmon,Nyear,Nmem+1,4)

      Nz=Nmem+1; 
      Allocate (zlev(Nz),xtime(Ntime),Y4d(Nlon,Nlat,Nz,Ntime))
      Do i=1,Nz; zlev(i)=i; Enddo; Do i=1,Ntime; xtime(i)=i; Enddo
      t_unit="months since 2011-01-01 "; lon_nm="lon"; lat_nm="lat"; t_nm="month"; z_nm="member"
      var_ln="Outputs of "//trim(yvarn)//" for drought calculation. Z=1..6: Member 1..6; Z=7: Ens. "
      Do ivar=1,Nvar
         Do imem=1,Nz
            it=0
            Do iyr=1,Nyear
               Do imon=1,Nmon
                  it=it+1; Y4d(:,:,imem,it)=X6d(:,:,imon,iyr,imem,ivar)
               Enddo
            Enddo
         Enddo
         var_longname=trim(var_ln)//v_ln(ivar)
         if (ivar==1) then
            Call wr_ncdf_4d (Fname,Lon,Lat,zlev,xtime,Nlon,Nlat,Nz,Ntime,Y4d,vname(ivar), &
                       t_unit, var_longname, "-", lon_nm, lat_nm, z_nm, t_nm, Miss)
         else
            Call wr_ncdf_4d_apd (Fname,Y4d,vname(ivar),Nlon,Nlat,Nz,Ntime, &
                           var_longname,"-", lon_nm, lat_nm, z_nm, t_nm, Miss)
         endif
      Enddo
   End Subroutine Write_Out_4_Drought
   !--------------------------------------------------------------------------------
   Subroutine Write_Out (Fname,yvarn)
      Character (Len=*) :: Fname,yvarn
      Character (Len=250) :: var_nm, t_unit, var_ln, var_unit, lon_nm, lat_nm, z_nm, t_nm
      Real, Allocatable, Dimension (:) :: zlev, xtime
      Real, Allocatable :: Y4d(:,:,:,:)  ! <<< X5d(ilon,ilat,1,iyr,1:Nmem)
      INteger :: i, Nz

      Nz=4; ! Nyear=7   ! Nyrs-1  ========> So lieu moi chi den 2018
      Allocate (zlev(Nz),xtime(Nyear)) !Nyrs-1))
      Allocate (Y4d(Nlon,Nlat,Nz,Nyear)) 
      Do i=1,Nz; zlev(i)=i; Enddo; Do i=1,Nyear; xtime(i)=i+2010; Enddo
      t_unit="years since 2011-01-01 "; lon_nm="lon"; lat_nm="lat"; t_nm="year"; z_nm="var"
      var_ln="Outputs for "//trim(yvarn)//": 1) Observation; 2) Ensemble mean of ANN Estimation; 3) Ensemble mean of Model forecast; 4) Clim. Bias Correction"
      var_nm="ens"
      Call wr_ncdf_4d (Fname,Lon,Lat,zlev,xtime,Nlon,Nlat,Nz,Nyear,X4d,var_nm, &
                       t_unit, var_ln, "-", lon_nm, lat_nm, z_nm, t_nm, Miss)
      Do imem=1,Nmem
         Y4d(:,:,:,:)=Miss
         Y4d(:,:,1:3,:)=X5d(:,:,1:3,:,imem)
         write (var_nm,"(A,I1.1)") "mem",imem
         var_ln="Outputs for "//trim(yvarn)//": 1) Observation; 2) ANN Estimation; 3) l forecast; 4) Filling data"
         Call wr_ncdf_4d_apd (Fname,Y4d,var_nm,Nlon,Nlat,Nz,Nyear, &
                           var_ln,"-", lon_nm, lat_nm, z_nm, t_nm, Miss)
      Enddo
      print*,"Write_Out ... Done"
   End Subroutine Write_Out
   !--------------------------------------------------------------------------------
   Subroutine Verification (ilead,imon)
      Integer :: ilon,ilat,imon,ilead, ireg, ic0, ic1, ic2
      Integer, Parameter :: N=7 ! Nyrs-1
      Real :: F1d(N),O1d(N),Model(N),Corr,Prob

      Do ilon=1,Nlon
         Do ilat=1,Nlat
            if (Int(Regs(ilon,ilat))>0) then
               O1d(1:N)=X4d(ilon,ilat,1,1:N)         ! Observation
               F1d(1:N)=X4d(ilon,ilat,2,1:N)         ! ANN output
               Model(1:N)=X4d(ilon,ilat,3,1:N)       ! Model output
               Pr_ME  (ilon,ilat,ilead,imon) = ME  (F1d,O1d,N,Miss)
               Pr_MAE (ilon,ilat,ilead,imon) = MAE (F1d,O1d,N,Miss)
               Pr_RME (ilon,ilat,ilead,imon) = RME (F1d,O1d,N,Miss) 
               Pr_RMAE(ilon,ilat,ilead,imon) = RMAE(F1d,O1d,N,Miss) 
               Call Correlation (F1d,O1d,N,Corr,Prob,Miss)
               Pr_COR (ilon,ilat,ilead,imon) = Corr 
               Pr_Pval(ilon,ilat,ilead,imon) = Prob
               Pr_AV  (ilon,ilat,ilead,imon) = AV  (F1d,Model,O1d,N,Miss)  ! ANN over Model

               Model(1:N)=X4d(ilon,ilat,4,1:N)        ! Corrected Model output (BC)
               Call Correlation (Model,O1d,N,Corr,Prob,Miss)
               Pr_CORbc (ilon,ilat,ilead,imon) = Corr ! between BC and Obs
               Pr_Pvalbc(ilon,ilat,ilead,imon) = Prob
               Pr_AVbc  (ilon,ilat,ilead,imon) = AV  (F1d,Model,O1d,N,Miss) ! ANN over BC
            endif
         Enddo
      Enddo 
      !
      Do ireg=1,Nreg
         ic0=0; ic1=0; ic2=0
         Do ilon=1,Nlon
            Do ilat=1,Nlat
               if (Int(Regs(ilon,ilat))==ireg) then
                  ic0=ic0+1
                  if (Pr_COR (ilon,ilat,ilead,imon)>0) ic1=ic1+1
                  if (Pr_AV  (ilon,ilat,ilead,imon)>0) ic2=ic2+1
               endif
            Enddo
         Enddo
         Score_Cor(ireg,imon,ilead)=real(ic1)/real(ic0)*100.0
         Score_AV (ireg,imon,ilead)=real(ic2)/real(ic0)*100.0
      Enddo
   End Subroutine Verification
   !--------------------------------------------------------------------------------
   Subroutine Write_Verification (Fname)
      Character (Len=*) :: Fname
      Character (Len=150) :: vname, t_unit, var_ln, var_unit, lon_nm, lat_nm, z_nm, t_nm
      Real, Allocatable, Dimension (:) :: zlev, xtime
      INteger :: i, Nz

      Allocate (zlev(NLead),xtime(Nmon))
      Do i=1,NLead; zlev(i)=i; Enddo; Do i=1,Nmon; xtime(i)=i; Enddo
      t_unit="months since 1982-01-01 "; lon_nm="lon"; lat_nm="lat"; t_nm="mon"; z_nm="lead"
      var_ln="Relative Mean Errors (RME)"
      Call wr_ncdf_4d (Fname,Lon,Lat,zlev,xtime,Nlon,Nlat,NLead,Nmon,Pr_RME,"rme", &
                       t_unit, var_ln, "-", lon_nm, lat_nm, z_nm, t_nm, Miss)
      var_ln="Relative Mean Absolute Errors (RMAE)"
      Call wr_ncdf_4d_apd (Fname,Pr_RMAE,"rmae", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)
      var_ln="Mean Errors (ME)"
      Call wr_ncdf_4d_apd (Fname,Pr_ME,"me", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)
      var_ln="Mean Absolute Errors (MAE)"
      Call wr_ncdf_4d_apd (Fname,Pr_MAE,"mae", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)
      var_ln="Correlation between ANN corrected and observation"
      Call wr_ncdf_4d_apd (Fname,Pr_COR,"cor", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)
      var_ln="p-values of Correlation between ANN corrected and observation"
      Call wr_ncdf_4d_apd (Fname,Pr_Pval,"pval", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)
      var_ln="Added values of ANN correction in comparison to model output"
      Call wr_ncdf_4d_apd (Fname,Pr_AV,"av", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)

      var_ln="Correlation between BC corrected and observation"
      Call wr_ncdf_4d_apd (Fname,Pr_CORbc,"corbc", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)
      var_ln="p-values of Correlation between BC corrected and observation"
      Call wr_ncdf_4d_apd (Fname,Pr_Pvalbc,"pvalbc", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)
      var_ln="Added values of ANN correction in comparison to BC correction"
      Call wr_ncdf_4d_apd (Fname,Pr_AVbc,"avbc", Nlon,Nlat,NLead,Nmon, &
                           var_ln,var_unit, lon_nm, lat_nm, z_nm, t_nm,Miss)
   End Subroutine Write_Verification
   !--------------------------------------------------------------------------------
   Subroutine Store_6th_Arr (imon)
      Integer :: imon,imem,ilon,ilat,it,iyr
      ! X6d(Nlon,Nlat,Nmon,Nyear,Nmem+2,4) - 1) OBS, 2) ANN est, 3) Model out, 4) Cli BC
print*,"Beginning"
      Do it=1,3             !iyr=1,Nyear
         Do iyr=1,Nyear     ! imem=1,Nmem
            Do imem=1,Nmem  !it=1,3
               X6d(:,:,imon,iyr,imem,it)=X5d(:,:,it,iyr,imem)
            Enddo
            X6d(:,:,imon,iyr,Nmem+1,it)=X4d(:,:,it,iyr)
         Enddo
      Enddo
      Do iyr=1,Nyear
         Do imem=1,Nmem
            X6d(:,:,imon,iyr,imem,4)=BC_Cli(:,:,iyr,imem)
         Enddo
         X6d(:,:,imon,iyr,Nmem+1,4)=X4d(:,:,4,iyr)
      Enddo
print*,"End"
   End Subroutine Store_6th_Arr
   !--------------------------------------------------------------------------------
   Subroutine Ens_all_members (ilead,imon)
      Integer :: ireg,imem,ilon,ilat,it,iyr
      Real :: X1d(Nmem)

      Do ilon=1,Nlon
         Do ilat=1,Nlat
            if (Int(Regs(ilon,ilat))>0) then
               Do iyr=1,Nyear ! 7 ! Nyrs-1 ==============> SL moi chi den 2018
                  X1d(1:Nmem)=X5d(ilon,ilat,1,iyr,1:Nmem)    ! OBS 
                  X4d(ilon,ilat,1,iyr)=Ave(X1d, Nmem, Miss)
                  X1d(1:Nmem)=X5d(ilon,ilat,2,iyr,1:Nmem)    ! ANN out
                  X4d(ilon,ilat,2,iyr)=Ave(X1d, Nmem, Miss)
                  X1d(1:Nmem)=X5d(ilon,ilat,3,iyr,1:Nmem)    ! Model out
                  X4d(ilon,ilat,3,iyr)=Ave(X1d, Nmem, Miss)
                  Do imem=1,Nmem
                     if (X5d(ilon,ilat,3,iyr,imem)/=Miss.AND.Bias_Cli(ilon,ilat,ilead,imon)/=Miss) then
                        X1d(imem)=X5d(ilon,ilat,3,iyr,imem)-Bias_Cli(ilon,ilat,ilead,imon) ! X1d = Model-Bias = Corrected
                        if (X1d(imem)<0) X1d(imem)=0     ! rainfall must be not negative
                        BC_Cli(ilon,ilat,iyr,imem)=X1d(imem)
                     else
                        X1d(imem)=Miss; BC_Cli(ilon,ilat,iyr,imem)=Miss
                     endif
                  Enddo
                  X4d(ilon,ilat,4,iyr)=Ave(X1d, Nmem, Miss)  ! Cli BC out
               Enddo
            endif
         Enddo
      Enddo
      ! Bias_Cli(:,:,:,:,:)  ! (Nlon,Nlat,NLead,Nmon)
   End Subroutine Ens_all_members
   !--------------------------------------------------------------------------------
   Subroutine Convert_to_lat_lon (ireg,imem)
      Integer :: ireg,imem,ilon,ilat,it,iyr

      it=0
      Do ilon=1,Nlon
         Do ilat=1,Nlat
            if (Int(Regs(ilon,ilat))==ireg) then
               Do iyr=1,Nyear ! 7 ! Nyrs-1 ==============> SL moi chi den 2018
                  it=it+1
                  X5d(ilon,ilat,1,iyr,imem)=Y_inp(it)     ! OBS
                  X5d(ilon,ilat,2,iyr,imem)=Yest(it,1)    ! ANN estimation
                  if (Yest(it,1)/=Miss.AND.Yest(it,1)<0.0) X5d(ilon,ilat,2,iyr,imem)=0.0  ! Rainfall must be >=0
                  X5d(ilon,ilat,3,iyr,imem)=X_inp(it,1)   ! Origin model fcs
               Enddo
            endif
         Enddo
      Enddo
      print*,"Size of Y_inp(:),X_inp(:,:): ",Size(Y_inp, Dim=1), Size(X_inp, Dim=1), Size(X_inp, Dim=2)
      print*,"Convert: Nit=",it; !pause
   End Subroutine Convert_to_lat_lon
   !--------------------------------------------------------------------------------
   Subroutine Make_Data (yvarn,ireg,imon,ilead,imem)
      Character (Len=*) :: yvarn
      Integer :: ireg,imon,imon1,ilead,ipredictand,iprd
      Integer :: ilon,ilat,it,Npoint,Mx,i,j,Nspl,imem

      Npoint = Get_Reg_Points (ireg)   
      Ngrd   = Npoint      ! So diem luoi trong vung ireg
      Nsample1=Nyrs*Npoint  ! Dung luong mau

      !print*,"Npoint,Nsample1,Nyrs,Ntime=",Npoint,Nsample1,Nyrs,Ntime
      print*,"Beginning Make_Data"
      Mx=8                 ! So bien doc lap
      Mvars=Mx
      if (Allocated(X_inp)) Deallocate (X_inp)
      if (Allocated(Y_inp)) Deallocate (Y_inp)
      Allocate (X_inp(Nsample1,Mx),Y_inp(Nsample1))
      if (yvarn=="pr") then
         ipredictand=1; iprd=5
      elseif (yvarn=="t2") then
         ipredictand=2; iprd=6
      elseif (yvarn=="tx") then
         ipredictand=3; iprd=7
      elseif (yvarn=="tm") then
         ipredictand=4; iprd=8
      endif

      i=0
      Do ilon=1,Nlon
         Do ilat=1,Nlat
            if (Int(Regs(ilon,ilat))==ireg) then
               Do it=1,Ntime
                  imon1=mod(it,Nmon); if (imon1==0) imon1=Nmon
                  if (imon1==imon) then
                     i=i+1
                     Y_inp(i)  =Dat_All(ilon,ilat,it,ipredictand,ilead,imem)   ! Observation
                     X_inp(i,1)=Dat_All(ilon,ilat,it,iprd,ilead,imem)          ! Model fcs
                     !X_inp(i,2)=Dat_All(ilon,ilat,it,9,ilead,imem)-Dat_All(ilon,ilat,it,10,ilead,imem)  ! h500-h850
                     if (Dat_All(ilon,ilat,it,9,ilead,imem)/=Miss.AND.Dat_All(ilon,ilat,it,10,ilead,imem)/=Miss) then
                        X_inp(i,2)=Dat_All(ilon,ilat,it,9,ilead,imem)-Dat_All(ilon,ilat,it,10,ilead,imem)  ! h500-h850  
                     else
                         X_inp(i,2)=Miss
                     endif
                     X_inp(i,3)=Dat_All(ilon,ilat,it,11,ilead,imem)   ! olr
                     X_inp(i,4)=Dat_All(ilon,ilat,it,12,ilead,imem)   ! q2
                     X_inp(i,5)=Dat_All(ilon,ilat,it,13,ilead,imem)   ! rh2
                     X_inp(i,6)=Dat_All(ilon,ilat,it,14,ilead,imem)   ! slp
                     !X_inp(i,7)=Dat_All(ilon,ilat,it,15,ilead,imem)-Dat_All(ilon,ilat,it,16,ilead,imem) ! u200-u850
                     if (Dat_All(ilon,ilat,it,15,ilead,imem)/=Miss.AND.Dat_All(ilon,ilat,it,16,ilead,imem)/=Miss) then
                        X_inp(i,7)=Dat_All(ilon,ilat,it,15,ilead,imem)-Dat_All(ilon,ilat,it,16,ilead,imem) ! u200-u850 
                     else
                        X_inp(i,7)=Miss
                     endif
                     X_inp(i,8)=Dat_All(ilon,ilat,it,17,ilead,imem)   ! w700
!print*,"i,it=",i,it
                  endif
               Enddo
            endif
         Enddo
      Enddo
      Nspl=i
      i=0; j=0
      !Do it=1,Nspl
      !   if (Y_inp(it)/=Miss.AND..not.Miss_Ar1(X_inp(it,1:Mx),Mx,Miss)) i=i+1
      !Enddo
!print*,"Num of Miss=",j; pause
      !Nsample=i
      Nsample1=Nspl
      if (Allocated(Inputs_X)) Deallocate (Inputs_X)
      if (Allocated(Outputs_Y)) Deallocate (Outputs_Y)
      Allocate (Inputs_X(Mx,Nsample1), Outputs_Y(1,Nsample1))
      i=0
      Do it=1,Nspl
         !if (Y_inp(it)/=Miss.AND..not.Miss_Ar1(X_inp(it,1:Mx),Mx,Miss)) then
            i=i+1
            Outputs_Y(1,i)=Y_inp(it)
            Do j=1,Mx
               Inputs_X(j,i)=X_inp(it,j)
            Enddo
         !endif
      Enddo
      print"(A,8I5)","Nspl,Nsample1,i,Npoint,Nsample1/Npoint=",Nspl,Nsample1,i,Npoint,Nsample1/Npoint; ! pause
      Deallocate (Y_inp,X_inp)
      Allocate (Y_inp(Nsample1),X_inp(Nsample1,Mx))
      Y_inp(1:Nsample1)=Outputs_Y(1,1:Nsample1); 
      Do j=1,Mx
         X_inp(1:Nsample1,j)=Inputs_X(j,1:Nsample1)
      Enddo
      print*,"End of Make_Data"
   End Subroutine Make_Data
   !--------------------------------------------------------------------------------
   Integer Function Get_Reg_Points (ireg)
      Integer :: ireg,ilon,ilat,Npoint

      Npoint=0
      Do ilon=1,Nlon
         Do ilat=1,Nlat
            if (Regs(ilon,ilat)==ireg) Npoint=Npoint+1
         Enddo
      Enddo
      Get_Reg_Points = Npoint
   End Function Get_Reg_Points
   !--------------------------------------------------------------------------------
   Subroutine Read_all_data (Model_nm)
      Character (Len=*) :: Model_nm
      Character (Len=255) :: Dir, Fname
      Real, Allocatable :: xlon(:),xlat(:),xtime(:)
      Integer :: imem,ilead,ivar,Nlo,Nla,Nt, k0, it1, it2

      k0=4    ! Bat dau chay mo hinh tu 4/2011
      Dir="/work/users/hmo/tanpv/From_HOME/562/Model_Data/"
      Do imem=1,Nmem
         Do ilead=1,NLead
            write(Fname,"(A,I1.1,A,I2.2,A)") trim(Dir)//"lead",ilead,"_"//trim(Model_nm)//"_",imem,"_VN.nc"  ! clWRF_VN.nc"
            !write(Fname,"(A,I1.1,A)") trim(Dir)//"lead",ilead,"_clWRF_VN.nc"
            it1=k0+ilead-1; it2=k0+7*Nmon+ilead
            Do ivar=1,Nvar
               Call rd_ncdf_3d (Fname,xlon,xlat,xtime,Nlo,Nla,Nt,X3d,trim(vname(ivar)))
               if (imem==1.AND.ilead==1.AND.ivar==1) then
                  Ntime=Nyrs*Nmon ! Ntime=Nt
                  Allocate (Dat_All(Nlon,Nlat,Ntime,Nvar,NLead,Nmem)); Dat_All=Miss
               endif
               Dat_All(:,:,1:Nt,ivar,ilead,imem) = X3d(:,:,1:Nt)
               !Dat_All(:,:,:,ivar,ilead,imem) = X3d(:,:,:)
               !if (ivar>4) then   ! Gan Miss cho cac SL phu hop voi quan trac va do dai chuoi (7 nam)
               !   Dat_All(:,:,1:it1,ivar,ilead,imem) = Miss; Dat_All(:,:,it2:Nt,ivar,ilead,imem) = Miss
               !endif
               Deallocate (xlon,xlat,xtime,X3d)
            Enddo
         Enddo
      Enddo
   End Subroutine Read_all_data
   !--------------------------------------------------------------------------------
   Logical Function Miss_Ar1(X,N,Miss)
      Integer :: N,i
      Real :: X(N), Miss
      Logical :: Empty

      Empty=.False.
      Do i=1,N
         if (X(i)==Miss) then
            Empty=.True.; Exit
         endif
      Enddo
      Miss_Ar1=Empty
   End Function Miss_Ar1
   !--------------------------------------------------------------------------------
     
   !Include "/home/tanpv/Mylibs/Sub_HQTT.f90"
   !Include "/home/tanpv/Mylibs/Sub_LAD.f90"
   !Include "/home/tanpv/Mylibs/Sub_LMV.f90"
   Include "/home/tanpv/Mylibs/Calc_Correlation_Coefficient.f90"  ! Correlation (X, Y, N, Corr, Prob, Miss)
   Include "/home/tanpv/Mylibs/Sub_Verification.f90"              ! ME, MAE, RME, RMAE
   Include "/home/tanpv/Mylibs/sub_wr_ncdf_Tan.F90" 
   Include "/home/tanpv/Mylibs/sub_rd_ncdf_Tan.F90"
   Include "/home/tanpv/Mylibs/Sub_neural_2023.f90"
   Include "/home/tanpv/Mylibs/Stdev.f90"
   Include "/home/tanpv/Mylibs/Ave.f90"
   !--------------------------------------------------------------------------------
   END
   Include "/home/tanpv/Mylibs/Student_Prob.f90"
   !-------------------------------------------------------------------------------------------