GCC Code Coverage Report


Directory: src/lib/
File: src/lib/mod_initialiser_glorot.f90
Date: 2024-06-28 12:51:18
Exec Total Coverage
Lines: 37 43 86.0%
Functions: 0 0 -%
Branches: 494 876 56.4%

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1 !!!#############################################################################
2 !!! Code written by Ned Thaddeus Taylor
3 !!! Code part of the ATHENA library - a feedforward neural network library
4 !!!#############################################################################
5 !!! module contains implementation of the Glorot initialiser
6 !!!#############################################################################
7 !!! Glorot initialiser reference: ...
8 !!! ... https://proceedings.mlr.press/v9/glorot10a.html
9 !!!#############################################################################
10 module initialiser_glorot
11 use constants, only: real12, pi
12 use custom_types, only: initialiser_type
13 implicit none
14
15
16 type, extends(initialiser_type) :: glorot_uniform_type
17 contains
18 procedure, pass(this) :: initialise => glorot_uniform_initialise
19 end type glorot_uniform_type
20 type(glorot_uniform_type) :: glorot_uniform
21 type, extends(initialiser_type) :: glorot_normal_type
22 contains
23 procedure, pass(this) :: initialise => glorot_normal_initialise
24 end type glorot_normal_type
25 type(glorot_normal_type) :: glorot_normal
26
27
28 private
29
30 public :: glorot_uniform
31 public :: glorot_normal
32
33
34 contains
35
36 !!!#############################################################################
37 !!! Xavier Glorot initialisation (uniform)
38 !!!#############################################################################
39 32 subroutine glorot_uniform_initialise(this, input, fan_in, fan_out)
40 implicit none
41 class(glorot_uniform_type), intent(inout) :: this
42 real(real12), dimension(..), intent(out) :: input
43 integer, optional, intent(in) :: fan_in, fan_out !no. in and out params
44
45 real(real12) :: scale
46
47 32 scale = sqrt(6._real12/real(fan_in+fan_out,real12))
48 select rank(input)
49 rank(0)
50 1 call random_number(input)
51 1 input = (input * 2._real12 - 1._real12) * scale
52 rank(1)
53 1 call random_number(input)
54
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2 input = (input * 2._real12 - 1._real12) * scale
55 rank(2)
56 12 call random_number(input)
57
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24334 input = (input * 2._real12 - 1._real12) * scale
58 rank(3)
59 5 call random_number(input)
60
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439 input = (input * 2._real12 - 1._real12) * scale
61 rank(4)
62 6 call random_number(input)
63
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3888 input = (input * 2._real12 - 1._real12) * scale
64 rank(5)
65 6 call random_number(input)
66
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11745 input = (input * 2._real12 - 1._real12) * scale
67 rank(6)
68 1 call random_number(input)
69
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7 input = (input * 2._real12 - 1._real12) * scale
70 end select
71
72 32 end subroutine glorot_uniform_initialise
73 !!!#############################################################################
74
75
76 !!!#############################################################################
77 !!! Xavier Glorot initialisation (normal)
78 !!!#############################################################################
79 7 subroutine glorot_normal_initialise(this, input, fan_in, fan_out)
80 implicit none
81 class(glorot_normal_type), intent(inout) :: this
82 real(real12), dimension(..), intent(out) :: input
83 integer, optional, intent(in) :: fan_in, fan_out !no. in and out params
84
85 real(real12) :: scale, norm
86
87 7 scale = sqrt(2._real12/real(fan_in+fan_out,real12)) ! standard deviation
88 7 scale = 2._real12 * scale**2._real12 ! 2*variance
89 7 norm = 1._real12 / (sqrt(pi*scale)) ! normalisation
90 select rank(input)
91 rank(0)
92 1 call random_number(input)
93 input = norm * &
94 1 exp( (-(input * 2._real12 - 1._real12)**2._real12) / scale )
95 rank(1)
96 1 call random_number(input)
97 input = norm * &
98
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2 exp( (-(input * 2._real12 - 1._real12)**2._real12) / scale )
99 rank(2)
100 1 call random_number(input)
101 input = norm * &
102
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21 exp( (-(input * 2._real12 - 1._real12)**2._real12) / scale )
103 rank(3)
104 1 call random_number(input)
105 input = norm * &
106
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4 exp( (-(input * 2._real12 - 1._real12)**2._real12) / scale )
107 rank(4)
108 1 call random_number(input)
109 input = norm * &
110
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1281 exp( (-(input * 2._real12 - 1._real12)**2._real12) / scale )
111 rank(5)
112 1 call random_number(input)
113 input = norm * &
114
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3873 exp( (-(input * 2._real12 - 1._real12)**2._real12) / scale )
115 rank(6)
116 1 call random_number(input)
117 input = norm * &
118
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7 exp( (-(input * 2._real12 - 1._real12)**2._real12) / scale )
119 end select
120
121 7 end subroutine glorot_normal_initialise
122 !!!#############################################################################
123
124
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171 end module initialiser_glorot
125 !!!#############################################################################
126