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42 :
43 : !> \brief
44 : !> This module contains the classes and procedures for setting up the `sampleSize` attribute of ParaMonte samplers.
45 : !> For more information, see the description of this attribute in the body of the module.
46 : !> \author Amir Shahmoradi
47 :
48 : module SpecBase_SampleSize_mod
49 :
50 : use Constants_mod, only: IK
51 : implicit none
52 :
53 : integer(IK) :: sampleSize ! namelist input
54 :
55 : character(*), parameter :: MODULE_NAME = "@SpecBase_SampleSize_mod"
56 :
57 : type :: SampleSize_type
58 : integer(IK) :: val
59 : integer(IK) :: abs
60 : integer(IK) :: def
61 : integer(IK) :: null
62 : character(:), allocatable :: str
63 : character(:), allocatable :: desc
64 : contains
65 : procedure, pass :: set => setSampleSize, nullifyNameListVar ! , checkForSanity
66 : end type SampleSize_type
67 :
68 : interface SampleSize_type
69 : module procedure :: constructSampleSize
70 : end interface SampleSize_type
71 :
72 : private :: constructSampleSize, setSampleSize, nullifyNameListVar
73 :
74 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
75 :
76 : contains
77 :
78 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
79 :
80 1047 : function constructSampleSize(methodName) result(SampleSizeObj)
81 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
82 : !DEC$ ATTRIBUTES DLLEXPORT :: constructSampleSize
83 : #endif
84 : use Constants_mod, only: IK, NULL_IK
85 : use String_mod, only: num2str
86 : implicit none
87 : character(*), intent(in) :: methodName
88 : type(SampleSize_type) :: SampleSizeObj
89 1047 : SampleSizeObj%def = -1
90 1047 : SampleSizeObj%null = NULL_IK
91 : SampleSizeObj%desc = &
92 : "The variable sampleSize is an integer that dictates the number of (hopefully, independent and identically distributed &
93 : &[i.i.d.]) samples to be drawn from the user-provided objective function. Three ranges of values are possible. If\n\n&
94 : & sampleSize < 0,\n\n&
95 : & then, the absolute value of sampleSize dictates the sample size in units of the effective sample size. &
96 : &The effective sample is by definition i.i.d., and free from duplicates and residual autocorrelation. The &
97 : &effective sample size is automatically determined by " // methodName // " toward the end of the simulation. &
98 : &For example:\n\n&
99 : & sampleSize = -1 yields the effective i.i.d. sample drawn from the objective function.\n\n&
100 : & sampleSize = -2 yields a (potentially non-i.i.d.) sample twice as big as the effective &
101 : &sample.\n\n&
102 : & sampleSize > 0,\n\n&
103 : & then, the sample size is assumed to be in units of the number of points to be sampled. &
104 : &If sampleSize turns out to be less than effectiveSampleSize, the resulting sample will be i.i.d.. &
105 : &If sampleSize turns out to be larger than effectiveSampleSize, the resulting sample will be &
106 : &potentially non-i.i.d.. The larger this difference, the more non-i.i.d. the resulting &
107 : &final refined sample will be. For example:\n\n&
108 : & sampleSize = 1000 yields a 1000-points sample from the objective function.\n\n&
109 : & sampleSize = 0,\n\n&
110 : & then, no sample file will be generated.\n\n&
111 1047 : &The default value is sampleSize = "// num2str(SampleSizeObj%def) //"."
112 1047 : end function constructSampleSize
113 :
114 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
115 :
116 1047 : subroutine nullifyNameListVar(SampleSizeObj)
117 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
118 : !DEC$ ATTRIBUTES DLLEXPORT :: nullifyNameListVar
119 : #endif
120 : implicit none
121 : class(SampleSize_type), intent(in) :: SampleSizeObj
122 1047 : sampleSize = SampleSizeObj%null
123 1047 : end subroutine nullifyNameListVar
124 :
125 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
126 :
127 1230 : subroutine setSampleSize(SampleSizeObj,sampleSize)
128 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
129 : !DEC$ ATTRIBUTES DLLEXPORT :: setSampleSize
130 : #endif
131 1047 : use String_mod, only: num2str
132 : use Constants_mod, only: IK
133 : implicit none
134 : class(SampleSize_type), intent(inout) :: SampleSizeObj
135 : integer(IK), intent(in) :: sampleSize
136 1230 : SampleSizeObj%val = sampleSize
137 1230 : if (SampleSizeObj%val==SampleSizeObj%null) then
138 1041 : SampleSizeObj%val = SampleSizeObj%def
139 : end if
140 1230 : SampleSizeObj%str = num2str(SampleSizeObj%val)
141 1230 : SampleSizeObj%abs = abs(SampleSizeObj%val)
142 1230 : end subroutine setSampleSize
143 :
144 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
145 :
146 : ! subroutine checkForSanity(SampleSizeObj,Err,methodName)
147 : !#if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
148 : ! !DEC$ ATTRIBUTES DLLEXPORT :: checkForSanity
149 : !#endif
150 : ! use Err_mod, only: Err_type
151 : ! use String_mod, only: num2str
152 : ! implicit none
153 : ! class(SampleSize_type), intent(in) :: SampleSizeObj
154 : ! character(*), intent(in) :: methodName
155 : ! type(Err_type), intent(inout) :: Err
156 : ! character(*), parameter :: PROCEDURE_NAME = "@checkForSanity()"
157 : ! if ( SampleSizeObj%val<1 ) then
158 : ! Err%occurred = .true.
159 : ! Err%msg = Err%msg // &
160 : ! MODULE_NAME // PROCEDURE_NAME // ": Error occurred. &
161 : ! &The input value for variable sampleSize must be a positive integer. If you are not sure about the &
162 : ! &appropriate value for this variable, simply drop it from the input. " // methodName // &
163 : ! " will automatically assign an appropriate value to it.\n\n"
164 : ! end if
165 : ! end subroutine checkForSanity
166 :
167 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
168 :
169 : end module SpecBase_SampleSize_mod ! LCOV_EXCL_LINE
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