def __init__(self,
state_dim,
nf_particle,
nf_effect,
g_dim,
u_dim,
n_timesteps,
deriv_in_state=False,
num_sys=0,
alpha=1,
init_scale=1):
super(KoopmanOperators, self).__init__()
self.n_timesteps = n_timesteps
self.u_dim = u_dim
if deriv_in_state and n_timesteps > 2:
first_deriv_dim = n_timesteps - 1
sec_deriv_dim = n_timesteps - 2
else:
first_deriv_dim = 0
sec_deriv_dim = 0
''' state '''
input_particle_dim = state_dim * (
n_timesteps + first_deriv_dim + sec_deriv_dim
) #+ g_dim # g_dim added for recursive sampling
self.mapping = encoderNet(input_particle_dim, g_dim, ALPHA=alpha)
self.composed_mapping = encoderNet(input_particle_dim,
g_dim * 2,
ALPHA=alpha)
self.inv_mapping = decoderNet(state_dim, g_dim, ALPHA=alpha, SN=False)
self.dynamics = dynamics(g_dim, init_scale)
self.backdynamics = dynamics_back(g_dim, self.dynamics)
self.u_dynamics = u_dynamics(g_dim, u_dim)
# self.gru_u_mapping = nn.GRU(input_particle_dim, u_dim, num_layers = 1, batch_first=True)
# self.linear_u_mapping = nn.Linear(u_dim, u_dim * 2)
#
self.nlinear_u_mapping = nn.Sequential(
nn.Linear(input_particle_dim, state_dim), nn.ReLU(),
nn.Linear(state_dim, u_dim * 2))
self.softmax = nn.Softmax(dim=-1)
self.st_gumbel_softmax = tut.STGumbelSoftmax(-1)
self.round = tut.Round()
self.st_gumbel_sigmoid = tut.STGumbelSigmoid()
self.system_identify = self.fit_block_diagonal
# self.system_identify_with_A = self.fit_with_A
# self.system_identify_with_compositional_A = self.fit_with_compositional_A
# self.system_identify = self.fit_across_objects
self.simulate = self.rollout
self.simulate_no_input = self.rollout_no_input
def __init__(self,
input_dim,
nf_particle,
nf_effect,
g_dim,
r_dim,
u_dim,
n_chan,
with_interactions=False,
residual=False,
collision_margin=None,
n_timesteps=None):
#TODO: added r_dim
super(EncoderNetwork, self).__init__()
# eo_dim = nf_particle
# es_dim = nf_particle
self.with_interactions = with_interactions
self.collision_margin = collision_margin
self.n_timesteps = n_timesteps
'''Encoder Networks'''
self.embedding = Embedding(input_dim,
n_chan,
hidden_size=nf_particle,
g=g_dim)
self.u_embedding = U_Embedding(input_dim,
n_chan,
hidden_size=nf_effect,
output_size=g_dim,
collision_margin=collision_margin)
if with_interactions:
self.rel_embedding = Rel_Embedding(
input_dim,
n_chan,
hidden_size=nf_effect,
output_size=g_dim,
collision_margin=collision_margin)
# TODO: There's the Gumbel Softmax, if this wasn't working. Check the Tracking code if they do KL divergence in that case
self.softmax = nn.Softmax(dim=-1)
self.round = tut.Round()
self.st_gumbel_softmax = tut.STGumbelSoftmax(-1)
def __init__(self, n_objects, dims):
super(NTM, self).__init__()
self.n_objects = n_objects
conf_dim, layer_dim, pose_dim, shape_dim, app_dim = dims[
'confidence'], dims['layer'], dims['pose'], dims['shape'], dims[
'appearance']
dim_y = conf_dim + layer_dim + pose_dim + shape_dim + app_dim
self.dims = dims
self.dim_h_o = dims['tracker_state']
self.fcn = nn.Sequential(nn.Linear(self.dim_h_o, self.dim_h_o),
nn.CELU(),
nn.Linear(self.dim_h_o, self.dim_h_o),
nn.CELU(), nn.Linear(self.dim_h_o, dim_y))
self.fcn = nn.Linear(self.dim_h_o, dim_y)
self.softmax = nn.Softmax(dim=1)
self.st_gumbel_sigmoid = ut.STGumbelSigmoid()
self.st_gumbel_softmax = ut.STGumbelSoftmax(1)
self.permutation_matrix_calculator = ut.PermutationMatrixCalculator()
# dim, feat_dim, n_objects, H, W
self.ntm_cell = NTMCell(self.dim_h_o, dims['features'], n_objects)
self.t = 0
self.att = None
self.mem = None
def __init__(self, state_dim, nf_particle, nf_effect, g_dim, u_dim, n_timesteps, n_blocks=1, residual=False, deriv_in_state=False, fixed_A=False, fixed_B=False, num_sys=0):
super(KoopmanOperators, self).__init__()
self.residual = residual
self.n_timesteps = n_timesteps
self.u_dim = u_dim
if deriv_in_state and n_timesteps > 2:
first_deriv_dim = n_timesteps - 1
sec_deriv_dim = n_timesteps - 2
else:
first_deriv_dim = 0
sec_deriv_dim = 0
''' state '''
# TODO: state_dim * n_timesteps if not hankel. Pass hankel as parameter.
input_particle_dim = state_dim * (n_timesteps + first_deriv_dim + sec_deriv_dim) #+ g_dim #TODO: g_dim added for recursive sampling
self.mapping = SimplePropagationNetwork(
input_particle_dim=input_particle_dim, nf_particle=nf_particle,
nf_effect=nf_effect, output_dim=g_dim, output_action_dim = u_dim, tanh=False, # use tanh to enforce the shape of the code space
residual=residual) # g * 2
self.composed_mapping = SimplePropagationNetwork(
input_particle_dim=input_particle_dim, nf_particle=nf_particle,
nf_effect=nf_effect, output_dim=2 * g_dim, output_action_dim = u_dim, tanh=False, # use tanh to enforce the shape of the code space
residual=residual) # g * 2
self.gru_u_mapping = nn.GRU(input_particle_dim, u_dim, num_layers = 1, batch_first=True)
self.linear_u_mapping = nn.Linear(u_dim, u_dim * 2)
#
self.nlinear_u_mapping = nn.Sequential(nn.Linear(input_particle_dim, state_dim),
nn.ReLU(),
nn.Linear(state_dim, u_dim * 2))
# self.nlinear_u_mapping = nn.Sequential(nn.Linear(g_dim, state_dim),
# nn.ReLU(),
# nn.Linear(state_dim, u_dim * 2))
# the state for decoding phase is replaced with code of g_dim
input_particle_dim = g_dim
# print('state_decoder', 'node', input_particle_dim, 'edge', input_relation_dim)
self.inv_mapping = SimplePropagationNetwork(
input_particle_dim=input_particle_dim, nf_particle=nf_particle,
nf_effect=nf_effect, output_dim=state_dim, tanh=False, residual=residual, spectral_norm=True) # TRUE
''' dynamical system coefficient: A'''
# self.system_identify = self.fit
# self.simulate = self.rollout
# self.step = self.linear_forward
self.A_reg = torch.eye(g_dim // n_blocks).unsqueeze(0)
if fixed_A:
# self.A = nn.Parameter( torch.randn((1, n_blocks, g_dim // n_blocks, g_dim // n_blocks), requires_grad=True) * .1 + (1 / (g_dim // n_blocks)))
self.A = nn.Parameter(torch.zeros(1, n_blocks, g_dim // n_blocks, g_dim // n_blocks, requires_grad=True) + torch.eye(g_dim // n_blocks)[None, None])
if fixed_B:
self.B = nn.Parameter( torch.randn((1, n_blocks, u_dim // n_blocks, g_dim // n_blocks), requires_grad=True) * .1 + (1 / (g_dim // n_blocks)))
if num_sys > 0:
# self.A = nn.Parameter( torch.randn((1, num_sys, g_dim // n_blocks, g_dim // n_blocks), requires_grad=True) * .1 + (1 / (g_dim // n_blocks)))
self.A = nn.Parameter(torch.zeros(1, num_sys, g_dim // n_blocks, g_dim // n_blocks, requires_grad=True) + torch.eye(g_dim // n_blocks)[None, None])
# ids = torch.arange(0,self.A.shape[-1])
# self.A[..., ids, ids] = 1
# self.A = nn.Parameter(self.A)
self.selector_fc = nn.Sequential(nn.Linear(g_dim, g_dim),
nn.ReLU(),
nn.Linear(g_dim, num_sys),
nn.ReLU())
self.softmax = nn.Softmax(dim=-1)
self.st_gumbel_softmax = tut.STGumbelSoftmax(-1)
self.round = tut.Round()
self.st_gumbel_sigmoid = tut.STGumbelSigmoid()
self.system_identify = self.fit_block_diagonal
self.system_identify_with_A = self.fit_with_A
self.system_identify_with_compositional_A = self.fit_with_compositional_A
# self.system_identify = self.fit_across_objects
self.simulate = self.rollout_block_diagonal
self.step = self.linear_forward_block_diagonal
self.num_blocks = n_blocks
def __init__(self,
state_dim,
nf_particle,
nf_effect,
g_dim,
u_dim,
n_timesteps,
deriv_in_state=False,
num_sys=0,
alpha=1,
init_scale=1):
super(KoopmanOperators, self).__init__()
self.n_timesteps = n_timesteps
self.u_dim = u_dim
if deriv_in_state and n_timesteps > 2:
first_deriv_dim = n_timesteps - 1
sec_deriv_dim = n_timesteps - 2
else:
first_deriv_dim = 0
sec_deriv_dim = 0
''' state '''
input_particle_dim = state_dim * (
n_timesteps + first_deriv_dim + sec_deriv_dim
) #+ g_dim # g_dim added for recursive sampling
self.mapping = encoderNet(input_particle_dim, g_dim, ALPHA=alpha)
self.composed_mapping = encoderNet(input_particle_dim,
g_dim * 2,
ALPHA=alpha)
self.inv_mapping = decoderNet(state_dim, g_dim, ALPHA=alpha)
self.dynamics = dynamics(g_dim, init_scale)
self.backdynamics = dynamics_back(g_dim, self.dynamics)
# self.gru_u_mapping = nn.GRU(input_particle_dim, u_dim, num_layers = 1, batch_first=True)
# self.linear_u_mapping = nn.Linear(u_dim, u_dim * 2)
#
self.nlinear_u_mapping = nn.Sequential(
nn.Linear(input_particle_dim, state_dim), nn.ReLU(),
nn.Linear(state_dim, u_dim * 2))
# if num_sys > 0:
# # self.A = nn.Parameter( torch.randn((1, num_sys, g_dim // n_blocks, g_dim // n_blocks), requires_grad=True) * .1 + (1 / (g_dim // n_blocks) **2))
# self.A = torch.zeros(1, num_sys, g_dim, g_dim)
# ids = torch.arange(0,self.A.shape[-1])
# self.A[..., ids, ids] = 1
# self.A = nn.Parameter(self.A, requires_grad=True)
# self.selector_fc = nn.Sequential(nn.Linear(g_dim, g_dim),
# nn.ReLU(),
# nn.Linear(g_dim, num_sys),
# nn.ReLU())
self.softmax = nn.Softmax(dim=-1)
self.st_gumbel_softmax = tut.STGumbelSoftmax(-1)
self.round = tut.Round()
self.st_gumbel_sigmoid = tut.STGumbelSigmoid()
self.system_identify = self.fit_block_diagonal
self.system_identify_with_A = self.fit_with_A
self.system_identify_with_compositional_A = self.fit_with_compositional_A
# self.system_identify = self.fit_across_objects
self.simulate = self.rollout_block_diagonal
self.step = self.linear_forward_block_diagonal