dodox/PriorConditionedAnnealing
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Minor bug fixes

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This commit is contained in:
Dominik Moritz Roth 2023-05-21 20:16:52 +02:00
parent 59adde5bd5
commit dcde2150ac
2 changed files with 11 additions and 5 deletions
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2
priorConditionedAnnealing/noise.py
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@ -15,7 +15,7 @@ class Colored_Noise():
self.reset(random_state=random_state)
def __call__(self, shape, latent: th.Tensor = None) -> th.Tensor:
assert shape == self.shape
assert shape == self.knonw_shape
sample = self.samples[:, self.index]
self.index = (self.index+1) % self.num_samples
return sample

14
priorConditionedAnnealing/pca.py
View File

@ -145,6 +145,7 @@ class PCA_Distribution(SB3_Distribution):
return self.sample(traj=trajectory)
def sample(self, traj: th.Tensor, f_sigma: int = 1, epsilon=None) -> th.Tensor:
assert self.skip_conditioning or type(traj) != type(None), 'A past trajectory has to be supplied if conditinoning is performed'
pi_mean, pi_std = self.distribution.mean.cpu(), self.distribution.scale.cpu()
rho_mean, rho_std = self._conditioning_engine(traj, pi_mean, pi_std)
rho_std *= f_sigma
@ -157,6 +158,8 @@ class PCA_Distribution(SB3_Distribution):
return actions
def is_contextual(self):
return True # TODO: Remove, when bug for non-contextual is fixed
# Always returning True will merely waste cpu cycles
return self.par_strength not in [Par_Strength.SCALAR, Par_Strength.DIAG]
def _get_rigged(self, pi_mean, pi_std, rho_mean, rho_std, epsilon=None):
@ -177,6 +180,10 @@ class PCA_Distribution(SB3_Distribution):
def _pad_and_cut_trajectory(self, traj, value=0):
if traj.shape[-2] < self.window:
if traj.shape[-2] == 0:
shape = list(traj.shape)
shape[-2] = 1
traj = th.ones(shape)*value
missing = self.window - traj.shape[-2]
return F.pad(input=traj, pad=(0, 0, missing, 0, 0, 0), value=value)
return traj[:, -self.window:, :]
@ -186,16 +193,15 @@ class PCA_Distribution(SB3_Distribution):
return pi_mean, pi_std
traj = self._pad_and_cut_trajectory(trajectory)
# Numpy is fun
y_np = np.append(np.swapaxes(traj, -1, -2),
np.repeat(np.expand_dims(pi_mean, -1), traj.shape[0], 0), -1)
y_np = np.append(np.swapaxes(traj, -1, -2), np.repeat(np.expand_dims(pi_mean, -1), traj.shape[0], 0), -1)
with th.no_grad():
conditioners = th.Tensor(self._adapt_conditioner(pi_std))
y = th.Tensor(y_np)
S = th.cholesky_solve(self.Sig12.expand(
conditioners.shape[:-1]).unsqueeze(-1), conditioners).squeeze(-1)
S = th.cholesky_solve(self.Sig12.expand(conditioners.shape[:-1]).unsqueeze(-1), conditioners).squeeze(-1)
rho_mean = th.einsum('bai,bai->ba', S, y)
rho_std = self.Sig22 - (S @ self.Sig12)