added first working MAPPO implementation
This commit is contained in:
Robert Müller
parent
ffc47752a7
commit
b09c461754
@ -1,4 +1,6 @@
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from algorithms.marl.base_ac import BaseActorCritic
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from algorithms.marl.iac import LoopIAC
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from algorithms.marl.snac import LoopSNAC
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from algorithms.marl.seac import LoopSEAC
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from algorithms.marl.iac import LoopIAC
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from algorithms.marl.snac import LoopSNAC
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from algorithms.marl.seac import LoopSEAC
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from algorithms.marl.mappo import LoopMAPPO
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from algorithms.marl.memory import MARLActorCriticMemory
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@ -1,5 +1,6 @@
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import torch
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from typing import Union, List
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import copy
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import numpy as np
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from torch.distributions import Categorical
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from algorithms.marl.memory import MARLActorCriticMemory
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@ -59,7 +60,7 @@ class BaseActorCritic:
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actions: ListOrTensor,
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hidden_actor: ListOrTensor,
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hidden_critic: ListOrTensor
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):
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) -> dict[ListOrTensor]:
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pass
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@ -67,8 +68,9 @@ class BaseActorCritic:
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def train_loop(self, checkpointer=None):
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env = instantiate_class(self.cfg['env'])
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n_steps, max_steps = [self.cfg['algorithm'][k] for k in ['n_steps', 'max_steps']]
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global_steps = 0
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global_steps, episode, df_results = 0, 0, []
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reward_queue = deque(maxlen=2000)
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memory_queue = deque(maxlen=self.cfg['algorithm'].get('keep_n_segments', 1))
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while global_steps < max_steps:
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tm = MARLActorCriticMemory(self.n_agents)
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obs = env.reset()
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@ -85,7 +87,8 @@ class BaseActorCritic:
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next_obs = next_obs
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if isinstance(done, bool): done = [done] * self.n_agents
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tm.add(observation=obs, action=action, reward=reward, done=done)
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tm.add(observation=obs, action=action, reward=reward, done=done,
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logits=out.get('logits', None), values=out.get('critic', None))
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obs = next_obs
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last_action = action
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last_hiddens = dict(hidden_actor=out.get('hidden_actor', None),
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@ -94,9 +97,11 @@ class BaseActorCritic:
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if len(tm) >= n_steps or all(done):
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tm.add(observation=next_obs)
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memory_queue.append(copy.deepcopy(tm))
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if self.__training:
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with torch.inference_mode(False):
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self.learn(tm)
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tm_ = tm if memory_queue.maxlen <= 1 else list(memory_queue)
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self.learn(tm_)
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tm.reset()
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tm.add(action=last_action, **last_hiddens)
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global_steps += 1
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@ -110,7 +115,13 @@ class BaseActorCritic:
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])
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if global_steps >= max_steps: break
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print(f'reward at step: {global_steps} = {rew_log}')
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print(f'reward at step: {episode} = {rew_log}')
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episode += 1
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df_results.append([global_steps, rew_log])
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df_results = pd.DataFrame(df_results, columns=['steps', 'reward'])
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if checkpointer is not None:
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df_results.to_csv(checkpointer.path / 'results.csv', index=False)
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return df_results
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@torch.inference_mode(True)
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def eval_loop(self, n_episodes, render=False):
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@ -143,10 +154,21 @@ class BaseActorCritic:
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return results
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@staticmethod
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def compute_advantages(critic, reward, done, gamma):
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return (reward + gamma * (1.0 - done) * critic[:, 1:].detach()) - critic[:, :-1]
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def compute_advantages(critic, reward, done, gamma, gae_coef=0.0):
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tds = (reward + gamma * (1.0 - done) * critic[:, 1:].detach()) - critic[:, :-1]
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def actor_critic(self, tm, network, gamma, entropy_coef, vf_coef, **kwargs):
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if gae_coef <= 0:
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return tds
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gae = torch.zeros_like(tds[:, -1])
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gaes = []
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for t in range(tds.shape[1]-1, -1, -1):
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gae = tds[:, t] + gamma * gae_coef * (1.0 - done[:, t]) * gae
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gaes.insert(0, gae)
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gaes = torch.stack(gaes, dim=1)
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return gaes
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def actor_critic(self, tm, network, gamma, entropy_coef, vf_coef, gae_coef=0.0, **kwargs):
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obs, actions, done, reward = tm.observation, tm.action, tm.done, tm.reward
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out = network(obs, actions, tm.hidden_actor, tm.hidden_critic)
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@ -154,7 +176,7 @@ class BaseActorCritic:
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critic = out['critic']
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entropy_loss = Categorical(logits=logits).entropy().mean(-1)
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advantages = self.compute_advantages(critic, reward, done, gamma)
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advantages = self.compute_advantages(critic, reward, done, gamma, gae_coef)
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value_loss = advantages.pow(2).mean(-1) # n_agent
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# policy loss
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@ -163,7 +185,6 @@ class BaseActorCritic:
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a2c_loss = -(advantages.detach() * log_ap).mean(-1)
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# weighted loss
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loss = a2c_loss + vf_coef*value_loss - entropy_coef * entropy_loss
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return loss.mean()
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def learn(self, tm: MARLActorCriticMemory, **kwargs):
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@ -21,7 +21,6 @@ class LoopIAC(BaseActorCritic):
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def load_state_dict(self, path: Path):
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paths = natsorted(list(path.glob('*.pt')))
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print(list(paths))
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for path, net in zip(paths, self.net):
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net.load_state_dict(torch.load(path))
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78
algorithms/marl/mappo.py
Normal file
78
algorithms/marl/mappo.py
Normal file
@ -0,0 +1,78 @@
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from algorithms.marl import LoopSNAC
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from algorithms.marl.memory import MARLActorCriticMemory
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from typing import List
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import random
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import torch
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from torch.distributions import Categorical
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class LoopMAPPO(LoopSNAC):
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def __init__(self, *args, **kwargs):
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super(LoopMAPPO, self).__init__(*args, **kwargs)
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def build_batch(self, tm: List[MARLActorCriticMemory]):
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sample = random.choices(tm, k=self.cfg['algorithm']['batch_size']-1)
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sample.append(tm[-1]) # always use latest segment in batch
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obs = torch.cat([s.observation for s in sample], 0)
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actions = torch.cat([s.action for s in sample], 0)
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hidden_actor = torch.cat([s.hidden_actor for s in sample], 0)
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hidden_critic = torch.cat([s.hidden_critic for s in sample], 0)
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logits = torch.cat([s.logits for s in sample], 0)
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values = torch.cat([s.values for s in sample], 0)
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reward = torch.cat([s.reward for s in sample], 0)
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done = torch.cat([s.done for s in sample], 0)
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log_props = torch.log_softmax(logits, -1)
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log_props = torch.gather(log_props, index=actions[:, 1:].unsqueeze(-1), dim=-1).squeeze()
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return obs, actions, hidden_actor, hidden_critic, log_props, values, reward, done
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def learn(self, tm: List[MARLActorCriticMemory], **kwargs):
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if len(tm) >= self.cfg['algorithm']['keep_n_segments']:
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# only learn when buffer is full
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for batch_i in range(self.cfg['algorithm']['n_updates']):
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loss = self.actor_critic(tm, self.net, **self.cfg['algorithm'], **kwargs)
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self.optimizer.zero_grad()
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loss.backward()
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torch.nn.utils.clip_grad_norm_(self.net.parameters(), 0.5)
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self.optimizer.step()
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def monte_carlo_returns(self, rewards, done, gamma):
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rewards_ = []
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discounted_reward = torch.zeros_like(rewards[:, -1])
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for t in range(rewards.shape[1]-1, -1, -1):
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discounted_reward = rewards[:, t] + (gamma * (1.0 - done[:, t]) * discounted_reward)
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rewards_.insert(0, discounted_reward)
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rewards_ = torch.stack(rewards_, dim=1)
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return rewards_
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def actor_critic(self, tm, network, gamma, entropy_coef, vf_coef, clip_range, gae_coef=0.0, **kwargs):
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obs, actions, hidden_actor, hidden_critic, old_log_probs, old_critic, reward, done = self.build_batch(tm)
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out = network(obs, actions, hidden_actor, hidden_critic)
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logits = out['logits'][:, :-1] # last one only needed for v_{t+1}
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critic = out['critic']
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# monte carlo returns
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mc_returns = self.monte_carlo_returns(reward, done, gamma)
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# monte_carlo_returns = (mc_returns - mc_returns.mean()) / (mc_returns.std() + 1e-7) todo: norm across agents?
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advantages = mc_returns - critic[:, :-1]
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# policy loss
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log_ap = torch.log_softmax(logits, -1)
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log_ap = torch.gather(log_ap, dim=-1, index=actions[:, 1:].unsqueeze(-1)).squeeze()
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ratio = (log_ap - old_log_probs).exp()
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surr1 = ratio * advantages.detach()
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surr2 = torch.clamp(ratio, 1 - clip_range, 1 + clip_range) * advantages.detach()
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policy_loss = -torch.min(surr1, surr2).mean(-1)
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# entropy & value loss
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entropy_loss = Categorical(logits=logits).entropy().mean(-1)
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value_loss = advantages.pow(2).mean(-1) # n_agent
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# weighted loss
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loss = policy_loss + vf_coef*value_loss - entropy_coef * entropy_loss
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return loss.mean()
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@ -13,14 +13,16 @@ class ActorCriticMemory(object):
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self.__actions = []
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self.__rewards = []
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self.__dones = []
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self.__hiddens_actor = []
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self.__hiddens_actor = []
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self.__hiddens_critic = []
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self.__logits = []
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self.__values = []
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def __len__(self):
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return len(self.__states)
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@property
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def observation(self):
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def observation(self): # add time dimension through stacking
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return torch.stack(self.__states, 0).unsqueeze(0) # 1 x timesteps x hidden dim
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@property
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@ -47,6 +49,14 @@ class ActorCriticMemory(object):
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def done(self):
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return torch.tensor(self.__dones).float().unsqueeze(0) # 1 x timesteps
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@property
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def logits(self): # assumes a trailing 1 for time dimension - common when using output from NN
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return torch.cat(self.__logits, 0).unsqueeze(0) # 1 x timesteps x actions
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@property
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def values(self):
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return torch.cat(self.__values, 0).unsqueeze(0) # 1 x timesteps x actions
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def add_observation(self, state: Union[Tensor, np.ndarray]):
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self.__states.append(state if isinstance(state, Tensor) else torch.from_numpy(state))
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@ -69,6 +79,12 @@ class ActorCriticMemory(object):
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def add_done(self, done: bool):
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self.__dones.append(done)
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def add_logits(self, logits: Tensor):
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self.__logits.append(logits)
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def add_values(self, logits: Tensor):
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self.__values.append(logits)
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def add(self, **kwargs):
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for k, v in kwargs.items():
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func = getattr(ActorCriticMemory, f'add_{k}')
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@ -129,3 +145,14 @@ class MARLActorCriticMemory(object):
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all_hc = [mem.hidden_critic for mem in self.memories]
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return torch.cat(all_hc, 0) # agents x layers x timesteps x hidden dim
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@property
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def logits(self):
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all_lgts = [mem.logits for mem in self.memories]
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return torch.cat(all_lgts, 0) # agents x layers x timesteps x hidden dim
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@property
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def values(self):
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all_vals = [mem.values for mem in self.memories]
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return torch.cat(all_vals, 0) # agents x layers x timesteps x hidden dim
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@ -12,6 +12,7 @@ class RecurrentAC(nn.Module):
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super(RecurrentAC, self).__init__()
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observation_size = np.prod(observation_size)
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self.n_layers = 1
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self.n_actions = n_actions
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self.use_agent_embedding = use_agent_embedding
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self.hidden_size_actor = hidden_size_actor
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self.hidden_size_critic = hidden_size_critic
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@ -25,13 +26,14 @@ class RecurrentAC(nn.Module):
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nn.Tanh(),
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nn.Linear(obs_emb_size, obs_emb_size)
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)
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self.gru_actor = nn.GRU(obs_emb_size, hidden_size_actor, batch_first=True, num_layers=self.n_layers)
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self.gru_actor = nn.GRU(obs_emb_size, hidden_size_actor, batch_first=True, num_layers=self.n_layers)
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self.gru_critic = nn.GRU(obs_emb_size, hidden_size_critic, batch_first=True, num_layers=self.n_layers)
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self.action_head = nn.Sequential(
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spectral_norm(nn.Linear(hidden_size_actor, hidden_size_actor)),
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nn.Linear(hidden_size_actor, hidden_size_actor),
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nn.Tanh(),
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nn.Linear(hidden_size_actor, n_actions)
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)
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# spectral_norm(nn.Linear(hidden_size_actor, hidden_size_actor)),
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self.critic_head = nn.Sequential(
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nn.Linear(hidden_size_critic, hidden_size_critic),
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nn.Tanh(),
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@ -50,12 +52,14 @@ class RecurrentAC(nn.Module):
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n_agents, t, *_ = observations.shape
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obs_emb = self.obs_proj(observations.view(n_agents, t, -1).float())
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action_emb = self.action_emb(actions+1) # shift by one due to padding idx
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agent_emb = self.agent_emb(
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torch.cat([torch.arange(0, n_agents, 1).view(-1, 1)]*t, 1)
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)
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x_t = torch.cat((obs_emb, action_emb), -1) \
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if not self.use_agent_embedding else torch.cat((obs_emb, agent_emb, action_emb), -1)
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if not self.use_agent_embedding:
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x_t = torch.cat((obs_emb, action_emb), -1)
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else:
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agent_emb = self.agent_emb(
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torch.cat([torch.arange(0, n_agents, 1).view(-1, 1)] * t, 1)
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)
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x_t = torch.cat((obs_emb, agent_emb, action_emb), -1)
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mixed_x_t = self.mix(x_t)
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output_p, _ = self.gru_actor(input=mixed_x_t, hx=hidden_actor.swapaxes(1, 0))
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@ -66,6 +70,15 @@ class RecurrentAC(nn.Module):
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return dict(logits=logits, critic=critic, hidden_actor=output_p, hidden_critic=output_c)
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class RecurrentACL2(RecurrentAC):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.action_head = nn.Sequential(
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nn.Linear(self.hidden_size_actor, self.hidden_size_actor),
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nn.Tanh(),
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NormalizedLinear(self.hidden_size_actor, self.n_actions, trainable_magnitude=True)
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)
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class NormalizedLinear(nn.Linear):
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def __init__(self, in_features: int, out_features: int,
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@ -8,7 +8,7 @@ class LoopSEAC(LoopIAC):
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def __init__(self, cfg):
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super(LoopSEAC, self).__init__(cfg)
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def actor_critic(self, tm, networks, gamma, entropy_coef, vf_coef, **kwargs):
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def actor_critic(self, tm, networks, gamma, entropy_coef, vf_coef, gae_coef=0.0, **kwargs):
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obs, actions, done, reward = tm.observation, tm.action, tm.done, tm.reward
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outputs = [net(obs, actions, tm.hidden_actor, tm.hidden_critic) for net in networks]
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@ -26,7 +26,7 @@ class LoopSEAC(LoopIAC):
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critic = out['critic']
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entropy_loss = Categorical(logits=logits[ag_i]).entropy().mean()
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advantages = self.compute_advantages(critic, reward, done, gamma)
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advantages = self.compute_advantages(critic, reward, done, gamma, gae_coef)
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# policy loss
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log_ap = torch.log_softmax(logits, -1)
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@ -1,12 +1,14 @@
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numpy
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scipy
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tqdm
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pandas
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seaborn>=0.11.1
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matplotlib>=3.4.1
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matplotlib>=3.3.4
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stable-baselines3>=1.0
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pygame>=2.1.0
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gym>=0.18.0
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networkx>=2.6.3
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simplejson>=3.17.5
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PyYAML>=6.0
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einops
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einops
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natsort
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@ -1,14 +1,13 @@
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from algorithms.utils import Checkpointer
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from pathlib import Path
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from algorithms.utils import load_yaml_file, add_env_props, instantiate_class, load_class
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from algorithms.marl import LoopSNAC, LoopIAC, LoopSEAC
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#from algorithms.marl import LoopSNAC, LoopIAC, LoopSEAC
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#study_root = Path(__file__).parent / 'curious_study'
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study_root = Path('/Users/romue/PycharmProjects/EDYS/algorithms/marl')
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for i in range(0, 5):
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for name in ['example_config']:
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for name in ['mappo']:#['seac', 'iac', 'snac']:
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study_root = Path(__file__).parent / name
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cfg = load_yaml_file(study_root / f'{name}.yaml')
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add_env_props(cfg)
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@ -17,7 +16,7 @@ for i in range(0, 5):
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max_steps = cfg['algorithm']['max_steps']
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n_steps = cfg['algorithm']['n_steps']
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checkpointer = Checkpointer(f'{name}#{i}', study_root, cfg, max_steps, 250)
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checkpointer = Checkpointer(f'{name}#{i}', study_root, cfg, max_steps, 50)
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loop = load_class(cfg['method'])(cfg)
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df = loop.train_loop(checkpointer)
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@ -1,32 +1,22 @@
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import numpy as np
|
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import pandas as pd
|
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from pathlib import Path
|
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import matplotlib.pyplot as plt
|
||||
import seaborn as sns
|
||||
|
||||
study_root = Path(__file__).parent / 'entropy_study'
|
||||
names_all = ['basic_gru', 'layernorm_gru', 'spectralnorm_gru', 'nonorm_gru']
|
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names_only_1 = ['L2OnlyAh_gru', 'L2OnlyChAh_gru', 'L2OnlyMix_gru', 'basic_gru']
|
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names_only_2 = ['L2NoCh_gru', 'L2NoAh_gru', 'nomix_gru', 'basic_gru']
|
||||
|
||||
names = names_only_2
|
||||
#names = ['nonorm_gru']
|
||||
# /Users/romue/PycharmProjects/EDYS/studies/normalization_study/basic_gru#3
|
||||
csvs = []
|
||||
for name in ['basic_gru', 'nonorm_gru', 'spectralnorm_gru']:
|
||||
for run in range(0, 1):
|
||||
dfs = []
|
||||
for name in ['l2snac', 'iac', 'snac', 'seac']:
|
||||
for c in range(5):
|
||||
try:
|
||||
df = pd.read_csv(study_root / f'{name}#{run}' / 'results.csv')
|
||||
df = df[df.agent == 'sum']
|
||||
df = df.groupby(['checkpoint', 'run']).mean().reset_index()
|
||||
df['method'] = name
|
||||
df['run_'] = run
|
||||
|
||||
df.reward = df.reward.rolling(15).mean()
|
||||
csvs.append(df)
|
||||
study_root = Path(__file__).parent / name / f'{name}#{c}'
|
||||
df = pd.read_csv(study_root / 'results.csv', index_col=False)
|
||||
df.reward = df.reward.rolling(100).mean()
|
||||
df['method'] = name.upper()
|
||||
dfs.append(df)
|
||||
except Exception as e:
|
||||
print(f'skipped {run}\t {name}')
|
||||
pass
|
||||
|
||||
csvs = pd.concat(csvs).rename(columns={"checkpoint": "steps*2e3", "B": "c"})
|
||||
sns.lineplot(data=csvs, x='steps*2e3', y='reward', hue='method', palette='husl', ci='sd', linewidth=1.8)
|
||||
plt.savefig('entropy.png')
|
||||
df = pd.concat(dfs).reset_index()
|
||||
sns.lineplot(data=df, x='episode', y='reward', hue='method', palette='husl', ci='sd', linewidth=1.5)
|
||||
plt.savefig('study.png')
|
||||
print('saved image')
|
||||
@ -3,19 +3,21 @@ from algorithms.marl import LoopSNAC, LoopIAC, LoopSEAC
|
||||
from pathlib import Path
|
||||
from algorithms.utils import load_yaml_file
|
||||
from tqdm import trange
|
||||
study = 'curious_study'
|
||||
study_root = Path(__file__).parent / study
|
||||
study = 'example_config#0'
|
||||
#study_root = Path(__file__).parent / study
|
||||
study_root = Path('/Users/romue/PycharmProjects/EDYS/algorithms/marl/')
|
||||
|
||||
#['L2NoAh_gru', 'L2NoCh_gru', 'nomix_gru']:
|
||||
render = True
|
||||
eval_eps = 3
|
||||
for run in range(0, 5):
|
||||
for name in ['basic_gru']:#['L2OnlyAh_gru', 'L2OnlyChAh_gru', 'L2OnlyMix_gru']: #['layernorm_gru', 'basic_gru', 'nonorm_gru', 'spectralnorm_gru']:
|
||||
cfg = load_yaml_file(Path(__file__).parent / study / f'{name}.yaml')
|
||||
p_root = Path(study_root / f'{name}#{run}')
|
||||
for name in ['example_config']:#['L2OnlyAh_gru', 'L2OnlyChAh_gru', 'L2OnlyMix_gru']: #['layernorm_gru', 'basic_gru', 'nonorm_gru', 'spectralnorm_gru']:
|
||||
cfg = load_yaml_file(study_root / study / 'config.yaml')
|
||||
#p_root = Path(study_root / study / f'{name}#{run}')
|
||||
dfs = []
|
||||
for i in trange(500):
|
||||
path = p_root / f'checkpoint_{i}'
|
||||
path = study_root / study / f'checkpoint_{161}'
|
||||
print(path)
|
||||
|
||||
snac = LoopSEAC(cfg)
|
||||
snac.load_state_dict(path)
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user