def GTreeInitializatorInteger(genome, **args):
""" Integer initialization function of GTree
This initializator accepts the *rangemin* and *rangemax* genome parameters.
It accepts the following parameters too:
*max_depth*
The max depth of the tree
*max_siblings*
The number of maximum siblings of an node
*method*
The method, accepts "grow", "full" or "ramped".
.. versionadded:: 0.6
The *GTreeInitializatorInteger* function.
"""
max_depth = genome.get_param("max_depth", 5)
max_siblings = genome.get_param("max_siblings", 2)
range_min = genome.get_param("rangemin", 0)
range_max = genome.get_param("rangemax", 100)
lambda_generator = lambda: rand_randint(range_min, range_max)
method = genome.get_param("method", "grow")
if method == "grow":
root = gtree_utils.buildGTreeGrow(0, lambda_generator, max_siblings, max_depth)
elif method == "full":
root = gtree_utils.buildGTreeFull(0, lambda_generator, max_siblings, max_depth)
elif method == "ramped":
if utils.random_flip_coin(0.5):
root = gtree_utils.buildGTreeGrow(0, lambda_generator, max_siblings, max_depth)
else:
root = gtree_utils.buildGTreeFull(0, lambda_generator, max_siblings, max_depth)
else:
utils.raise_exception("Unknown tree initialization method [%s] !" % method)
genome.setRoot(root)
genome.processNodes()
assert genome.get_height() <= max_depth
def GTreeInitializatorAllele(genome, **args):
""" Allele initialization function of GTree
To use this initializator, you must specify the *allele* genome parameter with the
:class:`GAllele.GAlleles` instance.
.. warning:: the :class:`GAllele.GAlleles` instance **must** have the homogeneous flag enabled
.. versionadded:: 0.6
The *GTreeInitializatorAllele* function.
"""
max_depth = genome.get_param("max_depth", 5)
max_siblings = genome.get_param("max_siblings", 2)
method = genome.get_param("method", "grow")
allele = genome.get_param("allele", None)
if allele is None:
utils.raise_exception("to use the GTreeInitializatorAllele, you must specify the 'allele' parameter")
if allele.homogeneous == False:
utils.raise_exception("to use the GTreeInitializatorAllele, the 'allele' must be homogeneous")
if method == "grow":
root = gtree_utils.buildGTreeGrow(0, allele[0].getRandomAllele, max_siblings, max_depth)
elif method == "full":
root = gtree_utils.buildGTreeFull(0, allele[0].getRandomAllele, max_siblings, max_depth)
elif method == "ramped":
if utils.random_flip_coin(0.5):
root = gtree_utils.buildGTreeGrow(0, allele[0].getRandomAllele, max_siblings, max_depth)
else:
root = gtree_utils.buildGTreeFull(0, allele[0].getRandomAllele, max_siblings, max_depth)
else:
utils.raise_exception("Unknown tree initialization method [%s] !" % method)
genome.setRoot(root)
genome.processNodes()
assert genome.get_height() <= max_depth
