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ift
NIFTy
Commits
de31a28f
Commit
de31a28f
authored
Dec 11, 2019
by
Philipp Haim
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More tests for correlated field
parent
d2c454b4
Changes
2
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Inline
Side-by-side
Showing
2 changed files
with
64 additions
and
31 deletions
+64
-31
nifty6/library/correlated_fields.py
nifty6/library/correlated_fields.py
+45
-20
test/test_operators/test_correlated_fields.py
test/test_operators/test_correlated_fields.py
+19
-11
No files found.
nifty6/library/correlated_fields.py
View file @
de31a28f
...
...
@@ -100,11 +100,23 @@ def _log_vol(power_space):
return
logk_lengths
[
1
:]
-
logk_lengths
[:
-
1
]
def
_structured_spaces
(
domain
):
if
isinstance
(
domain
[
0
],
UnstructuredDomain
):
return
np
.
arange
(
1
,
len
(
domain
))
return
np
.
arange
(
len
(
domain
))
def
_total_fluctuation_realized
(
samples
):
spaces
=
_structured_spaces
(
samples
[
0
].
domain
)
co
=
ContractionOperator
(
samples
[
0
].
domain
,
spaces
)
size
=
co
.
domain
.
size
/
co
.
target
.
size
res
=
0.
for
s
in
samples
:
res
=
res
+
(
s
-
s
.
mean
())
**
2
return
np
.
sqrt
((
res
/
len
(
samples
)).
mean
())
res
=
res
+
(
s
-
co
.
adjoint
(
co
(
s
)
/
size
))
**
2
res
=
res
.
mean
(
spaces
)
/
len
(
samples
)
if
np
.
isscalar
(
res
):
return
np
.
sqrt
(
res
)
return
np
.
sqrt
(
res
.
val
)
class
_LognormalMomentMatching
(
Operator
):
...
...
@@ -576,10 +588,13 @@ class CorrelatedFieldMaker:
@
staticmethod
def
offset_amplitude_realized
(
samples
):
spaces
=
_structured_spaces
(
samples
[
0
].
domain
)
res
=
0.
for
s
in
samples
:
res
=
res
+
s
.
mean
()
**
2
return
np
.
sqrt
(
res
/
len
(
samples
))
res
=
res
+
s
.
mean
(
spaces
)
**
2
if
np
.
isscalar
(
res
):
return
np
.
sqrt
(
res
/
len
(
samples
))
return
np
.
sqrt
(
res
.
val
/
len
(
samples
))
@
staticmethod
def
total_fluctuation_realized
(
samples
):
...
...
@@ -589,36 +604,46 @@ class CorrelatedFieldMaker:
def
slice_fluctuation_realized
(
samples
,
space
):
"""Computes slice fluctuations from collection of field (defined in signal
space) realizations."""
ldom
=
len
(
samples
[
0
].
domain
)
if
space
>=
l
dom
:
spaces
=
_structured_spaces
(
samples
[
0
].
domain
)
if
space
>=
l
en
(
spaces
)
:
raise
ValueError
(
"invalid space specified; got {!r}"
.
format
(
space
))
if
l
dom
==
1
:
if
l
en
(
spaces
)
==
1
:
return
_total_fluctuation_realized
(
samples
)
space
=
space
+
spaces
[
0
]
res1
,
res2
=
0.
,
0.
for
s
in
samples
:
res1
=
res1
+
s
**
2
res2
=
res2
+
s
.
mean
(
space
)
**
2
res1
=
res1
/
len
(
samples
)
res2
=
res2
/
len
(
samples
)
res
=
res1
.
mean
()
-
res2
.
mean
()
return
np
.
sqrt
(
res
)
res
=
res1
.
mean
(
spaces
)
-
res2
.
mean
(
spaces
[:
-
1
])
if
np
.
isscalar
(
res
):
return
np
.
sqrt
(
res
)
return
np
.
sqrt
(
res
.
val
)
@
staticmethod
def
average_fluctuation_realized
(
samples
,
space
):
"""Computes average fluctuations from collection of field (defined in signal
space) realizations."""
ldom
=
len
(
samples
[
0
].
domain
)
if
space
>=
l
dom
:
spaces
=
_structured_spaces
(
samples
[
0
].
domain
)
if
space
>=
l
en
(
spaces
)
:
raise
ValueError
(
"invalid space specified; got {!r}"
.
format
(
space
))
if
l
dom
==
1
:
if
l
en
(
spaces
)
==
1
:
return
_total_fluctuation_realized
(
samples
)
spaces
=
()
for
i
in
range
(
ldom
):
if
i
!=
space
:
spaces
+=
(
i
,)
space
=
space
+
spaces
[
0
]
sub_spaces
=
set
(
spaces
)
sub_spaces
.
remove
(
space
)
sub_dom
=
makeDomain
([
samples
[
0
].
domain
[
ind
]
for
ind
in
set
([
0
,])
|
set
([
space
,])])
co
=
ContractionOperator
(
sub_dom
,
len
(
sub_dom
)
-
1
)
res
=
0.
for
s
in
samples
:
r
=
s
.
mean
(
spaces
)
res
=
res
+
(
r
-
r
.
mean
())
**
2
res
=
res
/
len
(
samples
)
return
np
.
sqrt
(
res
.
mean
())
r
=
s
.
mean
(
sub_spaces
)
if
min
(
spaces
)
==
0
:
res
=
res
+
(
r
-
r
.
mean
(
spaces
[:
-
1
]))
**
2
else
:
res
=
res
+
(
r
-
co
.
adjoint
(
r
.
mean
(
spaces
[:
-
1
])))
**
2
res
=
res
.
mean
(
spaces
[
0
])
/
len
(
samples
)
if
np
.
isscalar
(
res
):
return
np
.
sqrt
(
res
)
return
np
.
sqrt
(
res
.
val
)
test/test_operators/test_correlated_fields.py
View file @
de31a28f
...
...
@@ -31,7 +31,8 @@ import nifty6 as ift
@
pytest
.
mark
.
parametrize
(
'rseed'
,
[
13
,
2
])
@
pytest
.
mark
.
parametrize
(
'Astds'
,
[[
1.
,
3.
],
[
0.2
,
1.4
]])
@
pytest
.
mark
.
parametrize
(
'offset_std'
,
[
1.
,
10.
])
def
testAmplitudesConsistency
(
rseed
,
sspace
,
Astds
,
offset_std
):
@
pytest
.
mark
.
parametrize
(
'N'
,
[
0
,
2
])
def
testAmplitudesConsistency
(
rseed
,
sspace
,
Astds
,
offset_std
,
N
):
def
stats
(
op
,
samples
):
sc
=
ift
.
StatCalculator
()
for
s
in
samples
:
...
...
@@ -42,17 +43,23 @@ def testAmplitudesConsistency(rseed, sspace, Astds, offset_std):
nsam
=
100
fsspace
=
ift
.
RGSpace
((
12
,),
(
0.4
,))
if
N
==
2
:
dofdex1
=
[
0
,
0
]
dofdex2
=
[
1
,
0
]
dofdex3
=
[
1
,
1
]
else
:
dofdex1
,
dofdex2
,
dofdex3
=
None
,
None
,
None
fa
=
ift
.
CorrelatedFieldMaker
.
make
(
offset_std
,
1E-8
,
''
)
fa
=
ift
.
CorrelatedFieldMaker
.
make
(
offset_std
,
1E-8
,
''
,
N
,
dofdex1
)
fa
.
add_fluctuations
(
sspace
,
Astds
[
0
],
1E-8
,
1.1
,
2.
,
2.1
,
.
5
,
-
2
,
1.
,
'spatial'
)
'spatial'
,
dofdex
=
dofdex2
)
fa
.
add_fluctuations
(
fsspace
,
Astds
[
1
],
1E-8
,
3.1
,
1.
,
.
5
,
.
1
,
-
4
,
1.
,
'freq'
)
'freq'
,
dofdex
=
dofdex3
)
op
=
fa
.
finalize
()
samples
=
[
ift
.
from_random
(
'normal'
,
op
.
domain
)
for
_
in
range
(
nsam
)]
tot_flm
,
_
=
stats
(
fa
.
total_fluctuation
,
samples
)
offset_std
,
_
=
stats
(
fa
.
amplitude_total_offset
,
samples
)
offset_
amp_
std
,
_
=
stats
(
fa
.
amplitude_total_offset
,
samples
)
intergated_fluct_std0
,
_
=
stats
(
fa
.
average_fluctuation
(
0
),
samples
)
intergated_fluct_std1
,
_
=
stats
(
fa
.
average_fluctuation
(
1
),
samples
)
...
...
@@ -67,22 +74,23 @@ def testAmplitudesConsistency(rseed, sspace, Astds, offset_std):
sl_fluct_space
=
fa
.
slice_fluctuation_realized
(
sams
,
0
)
sl_fluct_freq
=
fa
.
slice_fluctuation_realized
(
sams
,
1
)
assert_allclose
(
offset_std
,
zm_std_mean
,
rtol
=
0.5
)
assert_allclose
(
offset_
amp_
std
,
zm_std_mean
,
rtol
=
0.5
)
assert_allclose
(
intergated_fluct_std0
,
fluct_space
,
rtol
=
0.5
)
assert_allclose
(
intergated_fluct_std1
,
fluct_freq
,
rtol
=
0.5
)
assert_allclose
(
tot_flm
,
fluct_total
,
rtol
=
0.5
)
assert_allclose
(
slice_fluct_std0
,
sl_fluct_space
,
rtol
=
0.5
)
assert_allclose
(
slice_fluct_std1
,
sl_fluct_freq
,
rtol
=
0.5
)
fa
=
ift
.
CorrelatedFieldMaker
.
make
(
offset_std
,
.
1
,
''
)
fa
.
add_fluctuations
(
fsspace
,
Astds
[
1
],
1.
,
3.1
,
1.
,
.
5
,
.
1
,
-
4
,
1.
,
'freq'
)
fa
=
ift
.
CorrelatedFieldMaker
.
make
(
offset_std
,
.
1
,
''
,
N
,
dofdex1
)
fa
.
add_fluctuations
(
fsspace
,
Astds
[
1
],
1.
,
3.1
,
1.
,
.
5
,
.
1
,
-
4
,
1.
,
'freq'
,
dofdex
=
dofdex3
)
m
=
3.
x
=
fa
.
moment_slice_to_average
(
m
)
fa
.
add_fluctuations
(
sspace
,
x
,
1.5
,
1.1
,
2.
,
2.1
,
.
5
,
-
2
,
1.
,
'spatial'
,
0
)
fa
.
add_fluctuations
(
sspace
,
x
,
1.5
,
1.1
,
2.
,
2.1
,
.
5
,
-
2
,
1.
,
'spatial'
,
0
,
dofdex
=
dofdex2
)
op
=
fa
.
finalize
()
em
,
estd
=
stats
(
fa
.
slice_fluctuation
(
0
),
samples
)
assert_allclose
(
m
,
em
,
rtol
=
0.5
)
assert
op
.
target
[
0
]
==
sspace
assert
op
.
target
[
1
]
==
fsspace
assert
op
.
target
[
-
2
]
==
sspace
assert
op
.
target
[
-
1
]
==
fsspace
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