PSSAI_Team/JobShopScheduling
2
0
Fork 1
Code Issues 2 Pull requests Releases Wiki Activity

Somewhat sensible default parameters, temperature, amount of maximum anneal iterations and generator accept probability passed to anneal.

Browse source
This commit is contained in:
Maximilian Schlosser 2017-07-12 04:23:36 +02:00
parent 991b7f4175
commit 3a7a8ebcbd
2 changed files with 9 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/SchedulingAlgorithms/simanneal.py
View file

@ -4,15 +4,15 @@ from SchedulingAlgorithms.enumerate import enumerate as enum
from math import e
from random import random
def anneal(max_temp = 1000, max_steps = 1000):
def anneal(max_temp = 300, max_steps = 250, accept_prob=0.01):
global problem
gen_init(problem)
temp = max_temp
initial = enum(problem)
current = generate(initial, problem.machines * problem.jobs * 10)
current = generate(initial, problem.machines * problem.jobs * 10, 0) #Complete the iteration once fully.
del initial
for step in range(0, max_steps):
new = generate(current, problem.machines * problem.jobs)
new = generate(current, problem.machines * problem.jobs, accept_prob)
new_end = rate(new)
curr_end = rate(current)
p = 1 / ( 1 + (e ** ((curr_end - new_end)/temp)))