notwa/backyard
1
0
Fork 0
Code Issues Pull requests Releases Activity

direct: update birect.py

Browse source
This commit is contained in:
Connor Olding 2022-06-07 17:52:56 +02:00
parent 434f70b84b
commit ba8670bfad
1 changed files with 15 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
direct/birect.py
View file

@ -1,6 +1,7 @@
#!/usr/bin/env python3 #!/usr/bin/env python3
# based on hamming_exact3.py, but with all debug stuff removed # based on hamming_exact3.py, but with all debug stuff removed
def birect( def birect(
obj, obj,
lo, lo,
@ -297,9 +298,22 @@ def birect(
if __name__ == "__main__": if __name__ == "__main__":
from arsd_objectives import objective2210
import numpy as np import numpy as np
def objective2210(x):
# another linear transformation of the rosenbrock banana function.
assert len(x) > 1, len(x)
a, b = x[:-1], x[1:]
a = a / 4.0 * 2 - 12 / 15
b = b / 1.5 * 2 - 43 / 15
# solution: 3.60 1.40
return (
np.sum(100 * np.square(np.square(a) + b) + np.square(a - 1))
/ 499.0444444444444
)
F = np.float64 F = np.float64
res = birect( res = birect(
lambda a: objective2210(np.array(a, F)), lambda a: objective2210(np.array(a, F)),