Hello. I noticed a new search algorithm was added recently (HEBOSearch) and decided to try it out. First, I attempted to use it on a Gym environment I created, but I received an error. I then found an example script and attempted to run it with no success, receiving the same error.
Here is the error:
Traceback (most recent call last):
File “/home/runedog48/.local/lib/python3.8/site-packages/hebo/acq_optimizers/evolution_optimizer.py”, line 119, in optimize
res = minimize(prob, algo, (‘n_gen’, self.iter), verbose = self.verbose)
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/optimize.py”, line 85, in minimize
res = algorithm.solve()
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/model/algorithm.py”, line 226, in solve
self._solve(self.problem)
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/model/algorithm.py”, line 321, in _solve
self.next()
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/model/algorithm.py”, line 246, in next
self._next()
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/algorithms/genetic_algorithm.py”, line 93, in _next
self.off = self.mating.do(self.problem, self.pop, self.n_offsprings, algorithm=self)
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/model/infill.py”, line 40, in do
_off = self.eliminate_duplicates.do(_off, pop, off)
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/model/duplicate.py”, line 26, in do
pop = pop[~self._do(pop, None, np.full(len(pop), False))]
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/model/duplicate.py”, line 75, in _do
D = self.calc_dist(pop, other)
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/model/duplicate.py”, line 66, in calc_dist
D = cdist(X, X)
File “/home/runedog48/.local/lib/python3.8/site-packages/pymoo/util/misc.py”, line 90, in cdist
return scipy.spatial.distance.cdist(A, B, **kwargs)
File “/home/runedog48/.local/lib/python3.8/site-packages/scipy/spatial/distance.py”, line 2954, in cdist
return cdist_fn(XA, XB, out=out, **kwargs)
ValueError: Unsupported dtype object
I attempted to debug the function and find the problem, but I have no experience with any of these libraries. I found that XA and XB had a dtype of object; however, it expects a dtype of float.
Any help would be appreciated.