def test_generate_eq_function(self):
# create terminal nodes
term_node = Node(NodeType.CONSTANT, value=100.0)
input_node = Node(NodeType.INPUT, name="x")
# create function nodes
mul_func = Node(NodeType.FUNCTION,
name="MUL",
arity=2,
branches=[input_node, term_node])
rad_func = Node(NodeType.FUNCTION,
name="RAD",
arity=1,
branches=[mul_func])
sin_func = Node(NodeType.FUNCTION,
name="SIN",
arity=1,
branches=[rad_func])
# create tree
tree = Tree()
tree.root = sin_func
tree.update()
# generate equation function
eq_func = evaluator.generate_eq_function(tree, self.functions,
self.config)
# assert
self.assertIsNotNone(eq_func)
self.assertEquals(round(eq_func(1), 4), 0.9848)
def test_generate_eq_function_multivars(self):
# create terminal nodes
term_node = Node(NodeType.INPUT, name="var2")
input_node = Node(NodeType.INPUT, name="var1")
# create function nodes
div_func = Node(
NodeType.FUNCTION,
name="DIV",
arity=2,
branches=[input_node, term_node]
)
# create tree
tree = Tree()
tree.root = div_func
tree.update()
# generate equation function
config = {
"input_variables": [
{
"type": "INPUT",
"name": "var1"
},
{
"type": "INPUT",
"name": "var2"
}
],
"functions": {
"ADD": "+",
"SUB": "-",
"MUL": "*",
"DIV": "/",
"POW": "**",
"SIN": "math.sin",
"COS": "math.cos",
"RAD": "math.radians",
"LN": "math.ln",
"LOG": "math.log"
}
}
eq_func = evaluator.generate_eq_function(tree, self.functions, config)
# assert
self.assertIsNotNone(eq_func)
self.assertEquals(eq_func(1.0, 2.0), 0.5)
def test_generate_eq_function_multivars(self):
# create terminal nodes
term_node = Node(NodeType.INPUT, name="var2")
input_node = Node(NodeType.INPUT, name="var1")
# create function nodes
div_func = Node(NodeType.FUNCTION,
name="DIV",
arity=2,
branches=[input_node, term_node])
# create tree
tree = Tree()
tree.root = div_func
tree.update()
# generate equation function
config = {
"input_variables": [{
"type": "INPUT",
"name": "var1"
}, {
"type": "INPUT",
"name": "var2"
}],
"functions": {
"ADD": "+",
"SUB": "-",
"MUL": "*",
"DIV": "/",
"POW": "**",
"SIN": "math.sin",
"COS": "math.cos",
"RAD": "math.radians",
"LN": "math.ln",
"LOG": "math.log"
}
}
eq_func = evaluator.generate_eq_function(tree, self.functions, config)
# assert
self.assertIsNotNone(eq_func)
self.assertEquals(eq_func(1.0, 2.0), 0.5)
def test_generate_eq_function(self):
# create terminal nodes
term_node = Node(NodeType.CONSTANT, value=100.0)
input_node = Node(NodeType.INPUT, name="x")
# create function nodes
mul_func = Node(
NodeType.FUNCTION,
name="MUL",
arity=2,
branches=[input_node, term_node]
)
rad_func = Node(
NodeType.FUNCTION,
name="RAD",
arity=1,
branches=[mul_func]
)
sin_func = Node(
NodeType.FUNCTION,
name="SIN",
arity=1,
branches=[rad_func]
)
# create tree
tree = Tree()
tree.root = sin_func
tree.update()
# generate equation function
eq_func = evaluator.generate_eq_function(
tree,
self.functions,
self.config
)
# assert
self.assertIsNotNone(eq_func)
self.assertEquals(round(eq_func(1), 4), 0.9848)
