dlib_find_min_global.py

#!/usr/bin/env python

"""
  dlib_find_min_global.py
  
  Wrapper around `dlib.find_min_global` w/ (I think) better syntax
"""

import dlib
from math import *

def dlib_find_min_global(f, bounds, int_vars=None, **kwargs):
    int_vars = [] if int_vars is None else int_vars
    # varnames = f.__code__.co_varnames[:f.func_code.co_argcount] # python2.7
    varnames = f.__code__.co_varnames[:f.__code__.co_argcount]
    bound1_, bound2_, int_vars_ = [], [], []
    for varname in varnames:
        bound1_.append(bounds[varname][0])
        bound2_.append(bounds[varname][1])
        int_vars_.append(1 if varname in int_vars else 0)
    
    return dlib.find_min_global(f, bound1=bound1_, bound2=bound2_, is_integer_variable=int_vars_, **kwargs)

def holder_table(x0, x1):
     return -abs(sin(x0)*cos(x1)*exp(abs(1-sqrt(x0*x0+x1*x1)/pi)))

x, y = dlib_find_min_global(holder_table, {
    "x0" : (-10, 10),
    "x1" : (-10, 10),
}, num_function_calls=80)