def is_stable(coloring):
for color_class in coloring.colors():
v = coloring[color_class][0]
for u in coloring[color_class][1:]:
if not checkNeighbourhood(u, v):
return False
return True
def isStable(self):
for color_class in self.colors():
v = self.__colors[color_class][0]
for u in self.__colors[color_class][1:]:
if not checkNeighbourhood(u, v):
return False
return True
def getColoring(G):
alpha = coloring()
highestDegree = -1
for v in G.V():
alpha.put(v.get_degree(), v)
if highestDegree < v.get_color_num():
highestDegree = v.get_color_num()
changed = True
buffer = alpha
# De colour refinement:
while changed:
changed = False
alpha = buffer.deepcopy()
for color in alpha.colors():
colour_list = buffer.get(color)
if len(colour_list) > 1:
changelist = []
u = colour_list[0]
for v in colour_list[1:]:
if not checkNeighbourhood(u, v):
changed = True
changelist.append(v)
for v in changelist:
buffer.move(v, highestDegree + 1)
if changed:
highestDegree += 1
return buffer
def coloring_refinement(coloring, highest_degree = -1):
if highest_degree == -1:
for key in coloring.keys():
if key > highest_degree:
highest_degree = key
changed = True
while changed:
changed = False
for colour_list in get_color_classes(coloring):
change_list = []
u = colour_list[0]
for v in colour_list[1:]:
if not checkNeighbourhood(u, v):
changed = True
change_list.append(v)
move_all(coloring, change_list, highest_degree + 1)
if changed:
highest_degree += 1
return coloring
def get_coloring(G):
alpha = dict()
highest_degree = -1
for v in G.V():
put(alpha, v.get_degree(), v)
if highest_degree < v.get_color_num():
highest_degree = v.get_color_num()
changed = True
# De colour refinement:
while changed:
changed = False
for colour_list in get_color_classes(alpha):
change_list = []
u = colour_list[0]
for v in colour_list[1:]:
if not checkNeighbourhood(u, v):
changed = True
change_list.append(v)
move_all(alpha, change_list, highest_degree + 1)
if changed:
highest_degree += 1
return alpha, len(G.V())
def getColoring2(G):
alpha = coloring()
highestDegree = -1
for v in G.V():
alpha.put(v.get_degree(), v)
if highestDegree < v.get_color_num():
highestDegree = v.get_color_num()
changed = True
# De colour refinement:
while changed:
changed = False
for colour_list in alpha.getColorClasses():
change_list = []
u = colour_list[0]
for v in colour_list[1:]:
if not checkNeighbourhood(u, v):
changed = True
change_list.append(v)
alpha.moveAll(change_list, highestDegree + 1)
if changed:
highestDegree += 1
return alpha
