lanl/pyharmonysearch

pyHarmonySearch is a pure Python implementation of the harmony search (HS) global optimization algorithm.

pyharmonysearch's Issues

switch to setuptools

Switch to setuptools from distutils. Use ez_setup.py to simplify.

Return history

Hi @gfairchild , I have extended HarmonySearch to return harmony history as well. At the moment, it saves the harmonies after N evaluations, where N is the number of solutions. Do you think that this is useful? If so, I will do a PR. Thanks.

track changes

A changelog needs to be maintained. CHANGES.md sounds good.

The harmony_histories returns a list with all generation as the last generation.

I got a harmony_histories contain many generation, but they turn out to be with the same HMS. I considered it might be the last generation.

The code:

https://github.com/gfairchild/pyHarmonySearch/blob/11c57620f8c2295459bbe9ffe9542014ef1f3262/pyharmonysearch/harmony_search.py#L142

I think this part might need a deepcopy?

Setup from source

Hi,
I'm using python 3.5 and I try to setup pyHarmonySearch from source by running python setup.py install, But I get the following error:

TypeError: chown() missing 1 required positional argument: 'numeric_owner'

How can I resolve the error? Is it maybe because I use python 3.5 and it's not compatible with the setup process from source?

Inconsistent use of tabs and spaces in indentation in pip installation

Hi,
Using pip installed pyHarmonySearch, encountered

File "/usr/local/lib/python3.7/site-packages/pyharmonysearch/harmony_search.py", line 120
self._initialize(initial_harmonies)
^

TabError: inconsistent use of tabs and spaces in indentation

Instance of 'ObjectiveFunction' has no '_random_seed' member error

I get this error when i run the code

Use a defined random seed for reproducible results

I recommend 867,5309.

implement Mahdavi's improved harmony search

Mahdavi et al. suggested an improved harmony search that dynamically changes PAR and MPAP. This is a pretty easy modification. The suggestion comes from the following paper:

M. Mahdavi, M. Fesanghary, and E. Damangir, "An improved harmony search algorithm for solving optimization problems", Applied Mathematics and Computation, vol. 188, no. 2, pp. 1567-1579, May 2007.

Probably missing copy in harmony_histories?

As in #16, but in line 188 of harmony_search.py. Is there missing a copy.deepcopy(self._harmony_memory)? I haven't tried the code out yet, but I feel the gen-0 history will be the same as that of the last generation.

make more Pythonic

The gist should be something like this:

from pyharmonysearch import HarmonySearch

hs = HarmonySearch(parameters)
solution_vector, solution = hs.run()

put in PyPI

Once issue #2 is fixed, this can be put in PyPI. This will allow the following:

pip install pyHarmonySearch

Provide initial position

Hi @gfairchild,

I would like to provide HS an initial position. The present implementation does not provide such an option. I am thinking to modify the run() function to take an initial position. I am thinking to provide it a list of lists (the initial positions, one for each individual), and modify self.initialize(). Any suggestions would be much appreciated.

Thank you very much.

add documentation that describes ObjectiveFunctionInterface in detail

ObjectiveFunctionInterface should be described in detail via a more official form of documentation than just code documentation. Maybe a docs folder should be created and inside should go interface.md or something.

Add unit tests

This project does not currently have unit tests, but it really should. Travis CI should be used to automate testing.