def test_iterative_deepening_search_at_goal():
# plan of length 0, start == goal
task = dummy_task.get_search_space_at_goal()
solution = iterative_deepening_search(task)
print(solution)
assert solution is not None
assert len(solution) == 0
def main():
problem = MissionariesAndCannibals()
result = iterative_deepening_search(problem)
list_arr = []
for node in result.path():
list_arr.append(node.state.value)
return list_arr
def test_iterative_deepening_search_four_step():
# plan of length 4
task = dummy_task.get_simple_search_space_2()
solution = iterative_deepening_search(task)
print(solution)
assert solution is not None
assert len(solution) == 4
def test_iterative_deepening_search_no_solution():
# plan with no solution
task = dummy_task.get_search_space_no_solution()
searcher = iterative_deepening_search(task, 10)
solution = searcher.search(task)
print(searcher.extract_solution(solution))
assert solution is None
def huarong_pass_search(search_name):
goal_actions = []
hp = HuarongPass()
if search_name == 'BFS':
# print "Breadth first search...good choice. ", time.asctime()
goal_actions = search.breadth_first_search(hp).solution()
elif search_name == 'DFS':
# print "Depth first search...really?", time.asctime()
goal_actions = search.depth_first_graph_search(hp).solution()
elif search_name == 'IDS':
# print "Iterative deepening search...great choice!", time.asctime()
goal_actions = search.iterative_deepening_search(hp).solution()
elif search_name == 'BID':
# print "Bidirectional search...not required...using BFS instead..."
goal_actions = huarong_pass_search('BFS')
elif search_name == 'DLS':
# print "Depth limited search...", time.asctime()
goal_actions = search.depth_limited_search(hp, DEPTH_LIMIT).solution()
else:
print "Invalid search_name given. Exiting..."
return goal_actions
def test_iterative_deepening_search_three_step():
# plan of length 3
task = dummy_task.get_simple_search_space()
searcher = iterative_deepening_search(task)
solution = searcher.search(task)
print(searcher.extract_solution(solution))
assert solution is not None
assert len(solution) == 3
def run(self):
from time import clock
start_t = clock()
results = \
iterative_deepening_search(state, expanded_state, evaluate,
search, max_depth)
runtime = clock() - start_t
self._results = (results, runtime)
def test_ids():
global goal_state
print "Testing IDS..."
hp_0 = HuarongPass(initial_state)
hp_24 = HuarongPass(step_24_state)
hp_30 = HuarongPass(step_30_state)
hp_41 = HuarongPass(step_41_state)
hp_48 = HuarongPass(step_48_state)
hp_59 = HuarongPass(step_59_state)
hp_72 = HuarongPass(step_72_state)
hp_81 = HuarongPass(step_81_state)
# goal_state = step_24_state
# acts_0_24 = search.iterative_deepening_search(hp_0).solution()
# goal_state = step_30_state
# acts_24_30 = search.iterative_deepening_search(hp_24).solution()
# goal_state = step_41_state
# acts_30_41 = search.iterative_deepening_search(hp_30).solution()
# goal_state = step_48_state
# acts_41_48 = search.iterative_deepening_search(hp_41).solution()
# goal_state = step_59_state
# acts_48_59 = search.iterative_deepening_search(hp_48).solution()
# goal_state = step_72_state
# acts_59_72 = search.iterative_deepening_search(hp_59).solution()
goal_state = None
acts_72_81 = search.iterative_deepening_search(hp_72).solution()
# print len(acts_0_24), acts_0_24
# print len(acts_24_30), acts_24_30
# print len(acts_30_41), acts_30_41
# print len(acts_41_48), acts_41_48
# print len(acts_48_59), acts_48_59
# print len(acts_59_72), acts_59_72
# print len(acts_72_81), acts_72_81
# acts = acts_0_24 + acts_24_30 + acts_30_41 + acts_41_48 + acts_48_59 + acts_59_72 + acts_72_81
# print "Total steps: ", len(acts)
# audit_state(hp_0.state_given(initial_state, acts))
audit_state(hp_0.state_given(step_72_state, acts_72_81))
print "IDS test complete."
def huarong_pass_search(desired_search_strategy):
"""The function returns a list of actions that when applied to the initial state lead to the goal
state."""
initTime = datetime.datetime.now()
problem = HuarongPass()
if desired_search_strategy == "BFS":
s = search.breadth_first_tree_search(problem)
elif desired_search_strategy == "DFS":
s = search.depth_first_graph_search(problem)
elif desired_search_strategy == "IDS":
s = search.iterative_deepening_search(problem)
else:
print "Desired search strategy not found!"
endTime = datetime.datetime.now()
print "Time taken", endTime - initTime
return s.solution()
def solve():
"""
this function considers 10 random values for m and n and returns the solutions for all the values
between (1 and max(m))
"""
count = 0
while count <= 10:
m_choice = np.random.choice(list_m)
n_choice = np.random.choice(list_n)
# m should be be equal to n
if m_choice != n_choice:
if bltin_gcd(m_choice, n_choice) == 1:
count = count + 1
for i in range(1, m_choice + 1):
print(m_choice, n_choice, i)
puzzle = WaterJug(initial_state, m_choice, n_choice, i)
ans = iterative_deepening_search(puzzle)
print(ans.path())
# comment out one copy, and modify the other to get things to run more quickly while you're debugging
depths = (1, 2, 4, 8, 16)
trials = 100
path_lengths = {}
state_counts = {}
for depth in depths:
print('Gathering data for depth ' + str(depth) + '...')
path_lengths[depth] = {'BFS': [], 'IDS': [], 'A*-mis': [], 'A*-Man': []}
state_counts[depth] = {'BFS': [], 'IDS': [], 'A*-mis': [], 'A*-Man': []}
for trial in range(trials):
puzzle = EightPuzzle(depth)
p = search.InstrumentedProblem(puzzle)
path_lengths[depth]['BFS'].append(len(search.breadth_first_search(p).path()))
state_counts[depth]['BFS'].append(p.states)
p = search.InstrumentedProblem(puzzle)
path_lengths[depth]['IDS'].append(len(search.iterative_deepening_search(p).path()))
state_counts[depth]['IDS'].append(p.states)
p = search.InstrumentedProblem(puzzle)
path_lengths[depth]['A*-mis'].append(len(search.astar_search(p, misplaced).path()))
state_counts[depth]['A*-mis'].append(p.states)
p = search.InstrumentedProblem(puzzle)
path_lengths[depth]['A*-Man'].append(len(search.astar_search(p, manhattan).path()))
state_counts[depth]['A*-Man'].append(p.states)
print('Path lengths:')
print('{:>5} {:>8} {:>8} {:>8} {:>8}'.format('Depth', 'BFS', 'IDS', 'A*-mis', 'A*-Man'))
for depth in depths:
print('{:>5} {:>8} {:>8} {:>8} {:>8}' \
.format(depth,
mean(path_lengths[depth]['BFS']),
mean(path_lengths[depth]['IDS']),
mean(path_lengths[depth]['A*-mis']),
def solveIterativeDeepeningSearch():
"""Solves the puzzle using iterative_deepening_search"""
return iterative_deepening_search(puzzle).solution()
if action == Constants.up:
return zero_place - row_length
if action == Constants.down:
return zero_place + row_length
if action == Constants.right:
return zero_place + 1
return zero_place - 1
problem = EightPuzzle(Constants.begin, Constants.Goal)
goalnode = search.breadth_first_graph_search(problem)
# sammud (tegevused, käigud) algolekust lõppolekuni
print(goalnode.solution())
# olekud algolekust lõppolekuni
print("path", goalnode.path())
print("path_len", len(goalnode.path()))
problem = EightPuzzle(Constants.begin, Constants.Goal)
goalnode = search.iterative_deepening_search(problem)
# sammud (tegevused, käigud) algolekust lõppolekuni
print(goalnode.solution())
# olekud algolekust lõppolekuni
print("path", goalnode.path())
print("path_len", len(goalnode.path()))
search.compare_searchers([problem], ["name", "result"],
searchers=[
search.breadth_first_graph_search,
search.iterative_deepening_search
])
def iterative_deepening_search(problem):
return search.iterative_deepening_search(problem)
def solveIterativeDeepeningSearch(puzzle):
"""Solves the two jug problem using iterative_deepening_search"""
return iterative_deepening_search(puzzle).solution()
# Search methods
import search
ab = search.GPSProblem('A', 'B', search.romania)
af = search.GPSProblem('A', 'F', search.romania)
print("Anchura:")
print search.breadth_first_graph_search(ab).path()
print("Profundidad:")
print search.depth_first_graph_search(ab).path()
print search.iterative_deepening_search(ab).path()
print search.depth_limited_search(ab).path()
print search.depth_limited_search(ab).path()
print("Branch_and_Bound ab")
print search.branch_and_bound_search(ab).path()
print("Branch_and_Bound_with_Subestimation ab")
print search.branch_and_bound_with_subestimation_search(ab).path()
print("Branch_and_Bound af")
print search.branch_and_bound_search(af).path()
print("Branch_and_Bound_with_Subestimation af")
print search.branch_and_bound_with_subestimation_search(af).path()
# Result:
# [<Node B>, <Node P>, <Node R>, <Node S>, <Node A>] : 101 + 97 + 80 + 140 = 418
# [<Node B>, <Node F>, <Node S>, <Node A>] : 211 + 99 + 140 = 450
def test_iterative_deepening_search_no_solution():
# plan with no solution
task = dummy_task.get_search_space_no_solution()
solution = iterative_deepening_search(task, 10)
print(solution)
assert solution is None
}
state_counts[depth] = {
'BFS': [],
'IDS': [],
'A*-mis': [],
'A*-Man': []
}
for trial in range(trials):
puzzle = EightPuzzle(depth)
p = search.InstrumentedProblem(puzzle)
path_lengths[depth]['BFS'].append(
len(search.breadth_first_search(p).path()))
state_counts[depth]['BFS'].append(p.states)
p = search.InstrumentedProblem(puzzle)
path_lengths[depth]['IDS'].append(
len(search.iterative_deepening_search(p).path()))
state_counts[depth]['IDS'].append(p.states)
p = search.InstrumentedProblem(puzzle)
path_lengths[depth]['A*-mis'].append(
len(search.astar_search(p, misplaced).path()))
state_counts[depth]['A*-mis'].append(p.states)
p = search.InstrumentedProblem(puzzle)
path_lengths[depth]['A*-Man'].append(
len(search.astar_search(p, manhattan).path()))
state_counts[depth]['A*-Man'].append(p.states)
print('Path lengths:')
print('{:>5} {:>8} {:>8} {:>8} {:>8}'.format('Depth', 'BFS', 'IDS',
'A*-mis', 'A*-Man'))
for depth in depths:
print('{:>5} {:>8} {:>8} {:>8} {:>8}' \
.format(depth,
import search
from graph import Graph
if __name__ == "__main__":
# Setting graph we initiated to search class...
graph = Graph()
search.graph = graph
search.depth_first_search()
search.breath_first_search()
search.iterative_deepening_search()
search.uniform_cost_search()
search.greedy_best_first_search()
search.a_star_search()
def main():
problem = MissionariesAndCannibals()
result = iterative_deepening_search(problem)
print_path(result.path())
return state.board.is_goal_reached()
def h(self, node: Node):
""" Função heuristica utilizada para a procura A*. """
# TODO
robot, oX, oY = node.state.board.objective
x, y = node.state.board.robots[robot]
if oX == x or oY == y: return 1
return 2
if __name__ == "__main__":
# TODO:
# Ler o ficheiro de input de sys.argv[1],
# Usar uma técnica de procura para resolver a instância,
# Retirar a solução a partir do nó resultante,
# Imprimir para o standard output no formato indicado.
board = parse_instance(sys.argv[1])
#board = parse_instance("testing.txt")
# Criar uma instância de RicochetRobots:
problem = RicochetRobots(board)
# Obter o nó solução usando a procura Iterative Deepening Search:
solution_node = iterative_deepening_search(problem)
print(len(solution_node.solution()))
for i in solution_node.solution():
print(i[0] + " " + i[1])