def test_terminationnode():
net = nef.Network("testTerminationNode")
actions = [("up", [0, 1]), ("right", [1, 0]), ("down", [0, -1]),
("left", [-1, 0])]
env = deliveryenvironment.DeliveryEnvironment(
actions,
HRLutils.datafile("contextmap.bmp"),
colormap={
-16777216: "wall",
-1: "floor",
-256: "a",
-2088896: "b"
},
imgsize=(5, 5),
dx=0.001,
placedev=0.5)
net.add(env)
term_node = terminationnode.TerminationNode(
{
"a": [0, 1],
"b": [1, 0],
terminationnode.Timer((30, 30)): None
},
env,
contextD=2,
rewardval=1)
net.add(term_node)
print term_node.conds
context_input = net.make_input("contextinput", {
0.0: [0, 0.1],
0.5: [1, 0],
1.0: [0, 1]
})
net.connect(context_input, term_node.getTermination("context"))
net.add_to_nengo()
net.view()
def run_badreenvironment(nav_args,
ctrl_args,
bias=0.0,
seed=None,
flat=False,
label="tmp"):
"""Runs the model on the Badre et al. (2010) task."""
if seed is not None:
HRLutils.set_seed(seed)
seed = HRLutils.SEED
net = nef.Network("run_badreenvironment")
env = badreenvironment.BadreEnvironment(flat=flat)
net.add(env)
# ##NAV AGENT
stateN = 500
max_state_input = 3
enc = env.gen_encoders(stateN, 0, 0.0)
# generate evaluation points
orientations = MU.I(env.num_orientations)
shapes = MU.I(env.num_shapes)
colours = MU.I(env.num_colours)
evals = (
list(MU.diag([3 for _ in range(env.stateD)])) +
[o + s + c for o in orientations for s in shapes for c in colours])
# create lower level
nav_agent = smdpagent.SMDPAgent(stateN,
env.stateD,
env.actions,
name="NavAgent",
stateradius=max_state_input,
state_encoders=enc,
state_evals=evals,
discount=0.5,
**nav_args)
net.add(nav_agent)
print "agent neurons:", nav_agent.countNeurons()
# actions terminate on fixed schedule (aligned with environment)
nav_term_node = terminationnode.TerminationNode(
{terminationnode.Timer((0.6, 0.6)): None},
env,
name="NavTermNode",
state_delay=0.1,
reset_delay=0.05,
reset_interval=0.1)
net.add(nav_term_node)
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("reset"))
net.connect(nav_term_node.getOrigin("learn"),
nav_agent.getTermination("learn"))
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("save_state"))
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("save_action"))
net.connect(nav_agent.getOrigin("action_output"),
env.getTermination("action"))
# ##CTRL AGENT
stateN = 500
enc = RandomHypersphereVG().genVectors(stateN, env.stateD)
actions = [("shape", [0, 1]), ("orientation", [1, 0]), ("null", [0, 0])]
ctrl_agent = smdpagent.SMDPAgent(stateN,
env.stateD,
actions,
name="CtrlAgent",
state_encoders=enc,
stateradius=max_state_input,
state_evals=evals,
discount=0.4,
**ctrl_args)
net.add(ctrl_agent)
print "agent neurons:", ctrl_agent.countNeurons()
net.connect(env.getOrigin("state"),
ctrl_agent.getTermination("state_input"))
ctrl_term_node = terminationnode.TerminationNode(
{terminationnode.Timer((0.6, 0.6)): None},
env,
name="CtrlTermNode",
state_delay=0.1,
reset_delay=0.05,
reset_interval=0.1)
net.add(ctrl_term_node)
net.connect(ctrl_term_node.getOrigin("reset"),
ctrl_agent.getTermination("reset"))
net.connect(ctrl_term_node.getOrigin("learn"),
ctrl_agent.getTermination("learn"))
net.connect(ctrl_term_node.getOrigin("reset"),
ctrl_agent.getTermination("save_state"))
net.connect(ctrl_term_node.getOrigin("reset"),
ctrl_agent.getTermination("save_action"))
# ctrl gets a slight bonus if it selects a rule (as opposed to null), to
# encourage it to not just pick null all the time
reward_relay = net.make("reward_relay", 1, 3, mode="direct")
reward_relay.fixMode()
net.connect(env.getOrigin("reward"),
reward_relay,
transform=[[1], [0], [0]])
net.connect(ctrl_agent.getOrigin("action_output"),
reward_relay,
transform=[[0, 0], [1, 0], [0, 1]])
net.connect(reward_relay,
ctrl_agent.getTermination("reward"),
func=lambda x: ((x[0] + bias * abs(x[0]))
if x[1] + x[2] > 0.5 else x[0]),
origin_name="ctrl_reward")
# ideal reward function (for testing)
# def ctrl_reward_func(x):
# if abs(x[0]) < 0.5:
# return 0.0
#
# if flat:
# return 1.5 if x[1] + x[2] < 0.5 else -1.5
# else:
# if x[1] + x[2] < 0.5:
# return -1.5
# if [round(a) for a in env.state[-2:]] == [round(b)
# for b in x[1:]]:
# return 1.5
# else:
# return -1.5
# net.connect(reward_relay, ctrl_agent.getTermination("reward"),
# func=ctrl_reward_func)
# nav rewarded for picking ctrl target
def nav_reward_func(x):
if abs(x[0]) < 0.5 or env.action is None:
return 0.0
if x[1] + x[2] < 0.5:
return x[0]
if x[1] > x[2]:
return (1.5 if env.action[1] == env.state[:env.num_orientations]
else -1.5)
else:
return (1.5 if env.action[1]
== env.state[env.num_orientations:-env.num_colours] else
-1.5)
net.connect(reward_relay,
nav_agent.getTermination("reward"),
func=nav_reward_func)
# state for navagent controlled by ctrlagent
ctrl_state_inhib = net.make_array("ctrl_state_inhib",
50,
env.stateD,
radius=2,
mode=HRLutils.SIMULATION_MODE)
ctrl_state_inhib.fixMode([SimulationMode.DEFAULT, SimulationMode.RATE])
inhib_matrix = [[0, -5]] * 50 * env.num_orientations + \
[[-5, 0]] * 50 * env.num_shapes + \
[[-5, -5]] * 50 * env.num_colours
# ctrl output inhibits all the non-selected aspects of the state
net.connect(env.getOrigin("state"), ctrl_state_inhib)
net.connect(ctrl_agent.getOrigin("action_output"),
ctrl_state_inhib,
transform=inhib_matrix)
# also give a boost to the selected aspects (so that neurons are roughly
# equally activated).
def boost_func(x):
if x[0] > 0.5:
return [3 * v for v in x[1:]]
else:
return x[1:]
boost = net.make("boost", 1, 1 + env.stateD, mode="direct")
boost.fixMode()
net.connect(ctrl_state_inhib,
boost,
transform=([[0 for _ in range(env.stateD)]] +
list(MU.I(env.stateD))))
net.connect(ctrl_agent.getOrigin("action_output"),
boost,
transform=[[1, 1]] + [[0, 0] for _ in range(env.stateD)])
net.connect(boost,
nav_agent.getTermination("state_input"),
func=boost_func)
# save weights
weight_save = 1.0 # period to save weights (realtime, not simulation time)
threads = [
HRLutils.WeightSaveThread(
nav_agent.getNode("QNetwork").saveParams,
os.path.join("weights", "%s_%s" % (nav_agent.name, seed)),
weight_save),
HRLutils.WeightSaveThread(
ctrl_agent.getNode("QNetwork").saveParams,
os.path.join("weights", "%s_%s" % (ctrl_agent.name, seed)),
weight_save)
]
for t in threads:
t.start()
# data collection node
data = datanode.DataNode(
period=1,
filename=HRLutils.datafile("dataoutput_%s.txt" % label),
header="%s %s %s %s %s" % (nav_args, ctrl_args, bias, seed, flat))
print "saving data to", data.filename
print "header", data.header
net.add(data)
nav_q = nav_agent.getNode("QNetwork")
ctrl_q = ctrl_agent.getNode("QNetwork")
ctrl_bg = ctrl_agent.getNode("BGNetwork").getNode("weight_actions")
data.record_avg(env.getOrigin("reward"))
data.record_avg(ctrl_q.getNode("actionvals").getOrigin("X"))
data.record_sparsity(ctrl_q.getNode("state_pop").getOrigin("AXON"))
data.record_sparsity(nav_q.getNode("state_pop").getOrigin("AXON"))
data.record_avg(ctrl_q.getNode("valdiff").getOrigin("X"))
data.record_avg(ctrl_agent.getNode("ErrorNetwork").getOrigin("error"))
data.record_avg(ctrl_bg.getNode("0").getOrigin("AXON"))
data.record_avg(ctrl_bg.getNode("1").getOrigin("AXON"))
data.record(env.getOrigin("score"))
# net.add_to_nengo()
# net.network.simulator.run(0, 300, 0.001)
net.view()
for t in threads:
t.stop()
def run_flat_delivery(args, seed=None):
"""Runs the model on the delivery task with only one hierarchical level."""
if seed is not None:
HRLutils.set_seed(seed)
seed = HRLutils.SEED
net = nef.Network("run_flat_delivery")
if "load_weights" in args and args["load_weights"] is not None:
args["load_weights"] += "_%s" % seed
stateN = 1200
contextD = 2
context_scale = 1.0
max_state_input = 2
actions = [("up", [0, 1]), ("right", [1, 0]), ("down", [0, -1]),
("left", [-1, 0])]
# ##ENVIRONMENT
env = deliveryenvironment.DeliveryEnvironment(
actions,
HRLutils.datafile("contextmap.bmp"),
colormap={
-16777216: "wall",
-1: "floor",
-256: "a",
-2088896: "b"
},
imgsize=(5, 5),
dx=0.001,
placedev=0.5)
net.add(env)
print "generated", len(env.placecells), "placecells"
# ##NAV AGENT
enc = env.gen_encoders(stateN, contextD, context_scale)
enc = MU.prod(enc, 1.0 / max_state_input)
with open(HRLutils.datafile("contextbmp_evalpoints_%s.txt" % seed)) as f:
evals = [[float(x) for x in l.split(" ")] for l in f.readlines()]
nav_agent = smdpagent.SMDPAgent(stateN,
len(env.placecells) + contextD,
actions,
name="NavAgent",
state_encoders=enc,
state_evals=evals,
state_threshold=0.8,
**args)
net.add(nav_agent)
print "agent neurons:", nav_agent.countNeurons()
net.connect(nav_agent.getOrigin("action_output"),
env.getTermination("action"))
net.connect(env.getOrigin("placewcontext"),
nav_agent.getTermination("state_input"))
nav_term_node = terminationnode.TerminationNode(
{terminationnode.Timer((0.6, 0.9)): None},
env,
name="NavTermNode",
contextD=2)
net.add(nav_term_node)
net.connect(env.getOrigin("context"),
nav_term_node.getTermination("context"))
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("reset"))
net.connect(nav_term_node.getOrigin("learn"),
nav_agent.getTermination("learn"))
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("save_state"))
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("save_action"))
reward_relay = net.make("reward_relay", 1, 1, mode="direct")
reward_relay.fixMode()
net.connect(env.getOrigin("reward"), reward_relay)
net.connect(nav_term_node.getOrigin("pseudoreward"), reward_relay)
net.connect(reward_relay, nav_agent.getTermination("reward"))
# period to save weights (realtime, not simulation time)
weight_save = 600.0
HRLutils.WeightSaveThread(
nav_agent.getNode("QNetwork").saveParams,
os.path.join("weights", "%s_%s" % (nav_agent.name, seed)),
weight_save).start()
# data collection node
data = datanode.DataNode(period=5,
filename=HRLutils.datafile("dataoutput_%s.txt" %
seed))
net.add(data)
q_net = nav_agent.getNode("QNetwork")
data.record_avg(env.getOrigin("reward"))
data.record_avg(q_net.getNode("actionvals").getOrigin("X"))
data.record_sparsity(q_net.getNode("state_pop").getOrigin("AXON"))
data.record_avg(q_net.getNode("valdiff").getOrigin("X"))
data.record_avg(nav_agent.getNode("ErrorNetwork").getOrigin("error"))
# net.add_to_nengo()
# net.run(10000)
net.view()
def run_deliveryenvironment(navargs, ctrlargs, tag=None, seed=None):
"""Runs the model on the delivery task.
:param navargs: kwargs for the nav_agent (see SMDPAgent.__init__)
:param ctrlargs: kwargs for the ctrl_agent (see SMDPAgent.__init__)
:param tag: string appended to datafiles associated with this run
:param seed: random seed used for this run
"""
if seed is not None:
HRLutils.set_seed(seed)
seed = HRLutils.SEED
if tag is None:
tag = str(seed)
net = nef.Network("runDeliveryEnvironment", seed=seed)
stateN = 1200 # number of neurons to use in state population
contextD = 2 # dimension of context vector
context_scale = 1.0 # relative scale of context vector vs state vector
max_state_input = 2 # maximum length of input vector to state population
# labels and vectors corresponding to basic actions available to the system
actions = [("up", [0, 1]), ("right", [1, 0]), ("down", [0, -1]),
("left", [-1, 0])]
if "load_weights" in navargs and navargs["load_weights"] is not None:
navargs["load_weights"] += "_%s" % tag
if "load_weights" in ctrlargs and ctrlargs["load_weights"] is not None:
ctrlargs["load_weights"] += "_%s" % tag
# ##ENVIRONMENT
env = deliveryenvironment.DeliveryEnvironment(
actions,
HRLutils.datafile("contextmap.bmp"),
colormap={
-16777216: "wall",
-1: "floor",
-256: "a",
-2088896: "b"
},
imgsize=(5, 5),
dx=0.001,
placedev=0.5)
net.add(env)
print "generated", len(env.placecells), "placecells"
# ##NAV AGENT
# generate encoders and divide them by max_state_input (so that inputs
# will be scaled down to radius 1)
enc = env.gen_encoders(stateN, contextD, context_scale)
enc = MU.prod(enc, 1.0 / max_state_input)
# read in eval points from file
with open(HRLutils.datafile("contextbmp_evalpoints_%s.txt" % tag)) as f:
evals = [[float(x) for x in l.split(" ")] for l in f.readlines()]
nav_agent = smdpagent.SMDPAgent(stateN,
len(env.placecells) + contextD,
actions,
name="NavAgent",
state_encoders=enc,
state_evals=evals,
state_threshold=0.8,
**navargs)
net.add(nav_agent)
print "agent neurons:", nav_agent.countNeurons()
# output of nav_agent is what goes to the environment
net.connect(nav_agent.getOrigin("action_output"),
env.getTermination("action"))
# termination node for nav_agent (just a timer that goes off regularly)
nav_term_node = terminationnode.TerminationNode(
{terminationnode.Timer((0.6, 0.9)): None},
env,
contextD=2,
name="NavTermNode")
net.add(nav_term_node)
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("reset"))
net.connect(nav_term_node.getOrigin("learn"),
nav_agent.getTermination("learn"))
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("save_state"))
net.connect(nav_term_node.getOrigin("reset"),
nav_agent.getTermination("save_action"))
# ##CTRL AGENT
# actions corresponding to "go to A" or "go to B"
actions = [("a", [0, 1]), ("b", [1, 0])]
ctrl_agent = smdpagent.SMDPAgent(stateN,
len(env.placecells) + contextD,
actions,
name="CtrlAgent",
state_encoders=enc,
state_evals=evals,
state_threshold=0.8,
**ctrlargs)
net.add(ctrl_agent)
print "agent neurons:", ctrl_agent.countNeurons()
# ctrl_agent gets environmental state and reward
net.connect(env.getOrigin("placewcontext"),
ctrl_agent.getTermination("state_input"))
net.connect(env.getOrigin("reward"), ctrl_agent.getTermination("reward"))
# termination node for ctrl_agent (terminates whenever the agent is in the
# state targeted by the ctrl_agent)
# also has a long timer so that ctrl_agent doesn't get permanently stuck
# in one action
ctrl_term_node = terminationnode.TerminationNode(
{
"a": [0, 1],
"b": [1, 0],
terminationnode.Timer((30, 30)): None
},
env,
contextD=2,
name="CtrlTermNode",
rewardval=1.5)
net.add(ctrl_term_node)
# reward for nav_agent is the pseudoreward from ctrl_agent termination
net.connect(ctrl_term_node.getOrigin("pseudoreward"),
nav_agent.getTermination("reward"))
net.connect(ctrl_term_node.getOrigin("reset"),
ctrl_agent.getTermination("reset"))
net.connect(ctrl_term_node.getOrigin("learn"),
ctrl_agent.getTermination("learn"))
net.connect(ctrl_term_node.getOrigin("reset"),
ctrl_agent.getTermination("save_state"))
net.connect(ctrl_term_node.getOrigin("reset"),
ctrl_agent.getTermination("save_action"))
# connect ctrl_agent action to termination context
# this is used so that ctrl_term_node knows what the current goal is (to
# determine termination and pseudoreward)
net.connect(ctrl_agent.getOrigin("action_output"),
ctrl_term_node.getTermination("context"))
# state input for nav_agent is the environmental state + the output of
# ctrl_agent
ctrl_output_relay = net.make("ctrl_output_relay",
1,
len(env.placecells) + contextD,
mode="direct")
ctrl_output_relay.fixMode()
trans = (list(MU.I(len(env.placecells))) +
[[0 for _ in range(len(env.placecells))]
for _ in range(contextD)])
net.connect(env.getOrigin("place"), ctrl_output_relay, transform=trans)
net.connect(ctrl_agent.getOrigin("action_output"),
ctrl_output_relay,
transform=([[0 for _ in range(contextD)]
for _ in range(len(env.placecells))] +
list(MU.I(contextD))))
net.connect(ctrl_output_relay, nav_agent.getTermination("state_input"))
# periodically save the weights
# period to save weights (realtime, not simulation time)
weight_save = 600.0
threads = [
HRLutils.WeightSaveThread(
nav_agent.getNode("QNetwork").saveParams,
os.path.join("weights", "%s_%s" % (nav_agent.name, tag)),
weight_save),
HRLutils.WeightSaveThread(
ctrl_agent.getNode("QNetwork").saveParams,
os.path.join("weights", "%s_%s" % (ctrl_agent.name, tag)),
weight_save)
]
for t in threads:
t.start()
# data collection node
data = datanode.DataNode(period=5,
filename=HRLutils.datafile("dataoutput_%s.txt" %
tag))
net.add(data)
data.record(env.getOrigin("reward"))
q_net = ctrl_agent.getNode("QNetwork")
data.record(q_net.getNode("actionvals").getOrigin("X"), func=max)
data.record(q_net.getNode("actionvals").getOrigin("X"), func=min)
data.record_sparsity(q_net.getNode("state_pop").getOrigin("AXON"))
data.record_avg(q_net.getNode("valdiff").getOrigin("X"))
data.record_avg(ctrl_agent.getNode("ErrorNetwork").getOrigin("error"))
# net.add_to_nengo()
# net.run(10000)
net.view()
for t in threads:
t.stop()
def run_contextenvironment(args, seed=None):
"""Runs the model on the context task.
:param args: kwargs for the agent
:param seed: random seed
"""
if seed is not None:
HRLutils.set_seed(seed)
seed = HRLutils.SEED
net = nef.Network("runContextEnvironment")
if "load_weights" in args and args["load_weights"] is not None:
args["load_weights"] += "_%s" % seed
stateN = 1200 # number of neurons to use in state population
contextD = 2 # dimension of context vector
context_scale = 1.0 # scale of context representation
max_state_input = 2 # max length of input vector for state population
# actions (label and vector) available to the system
actions = [("up", [0, 1]), ("right", [1, 0]), ("down", [0, -1]),
("left", [-1, 0])]
# context labels and rewards for achieving those context goals
rewards = {"a": 1.5, "b": 1.5}
env = contextenvironment.ContextEnvironment(
actions,
HRLutils.datafile("contextmap.bmp"),
contextD,
rewards,
colormap={
-16777216: "wall",
-1: "floor",
-256: "a",
-2088896: "b"
},
imgsize=(5, 5),
dx=0.001,
placedev=0.5)
net.add(env)
print "generated", len(env.placecells), "placecells"
# termination node for agent (just goes off on some regular interval)
term_node = terminationnode.TerminationNode(
{terminationnode.Timer((0.6, 0.9)): 0.0}, env)
net.add(term_node)
# generate encoders and divide by max_state_input (so that all inputs
# will end up being radius 1)
enc = env.gen_encoders(stateN, contextD, context_scale)
enc = MU.prod(enc, 1.0 / max_state_input)
# load eval points from file
with open(HRLutils.datafile("contextbmp_evalpoints_%s.txt" % seed)) as f:
print "loading contextbmp_evalpoints_%s.txt" % seed
evals = [[float(x) for x in l.split(" ")] for l in f.readlines()]
agent = smdpagent.SMDPAgent(stateN,
len(env.placecells) + contextD,
actions,
state_encoders=enc,
state_evals=evals,
state_threshold=0.8,
**args)
net.add(agent)
print "agent neurons:", agent.countNeurons()
# period to save weights (realtime, not simulation time)
weight_save = 600.0
t = HRLutils.WeightSaveThread(
agent.getNode("QNetwork").saveParams,
os.path.join("weights", "%s_%s" % (agent.name, seed)), weight_save)
t.start()
# data collection node
data = datanode.DataNode(period=5,
filename=HRLutils.datafile("dataoutput_%s.txt" %
seed))
net.add(data)
q_net = agent.getNode("QNetwork")
data.record(env.getOrigin("reward"))
data.record(q_net.getNode("actionvals").getOrigin("X"), func=max)
data.record(q_net.getNode("actionvals").getOrigin("X"), func=min)
data.record_sparsity(q_net.getNode("state_pop").getOrigin("AXON"))
data.record_avg(q_net.getNode("valdiff").getOrigin("X"))
data.record_avg(env.getOrigin("state"))
net.connect(env.getOrigin("placewcontext"),
agent.getTermination("state_input"))
net.connect(env.getOrigin("reward"), agent.getTermination("reward"))
net.connect(term_node.getOrigin("reset"), agent.getTermination("reset"))
net.connect(term_node.getOrigin("learn"), agent.getTermination("learn"))
net.connect(term_node.getOrigin("reset"),
agent.getTermination("save_state"))
net.connect(term_node.getOrigin("reset"),
agent.getTermination("save_action"))
net.connect(agent.getOrigin("action_output"), env.getTermination("action"))
# net.add_to_nengo()
# net.run(2000)
net.view()
t.stop()