######################################################################
-def generate_episodes(nb, height=6, width=6, T=10):
+def generate_episodes(nb, height=6, width=6, T=10, nb_walls=3):
rnd = torch.rand(nb, height, width)
rnd[:, 0, :] = 0
rnd[:, -1, :] = 0
rnd[:, :, -1] = 0
wall = 0
- for k in range(3):
+ for k in range(nb_walls):
wall = wall + (
rnd.flatten(1).argmax(dim=1)[:, None]
== torch.arange(rnd.flatten(1).size(1))[None, :]
).long().reshape(rnd.size())
+
rnd = rnd * (1 - wall.clamp(max=1))
states = wall[:, None, :, :].expand(-1, T, -1, -1).clone()
actions = actions[:, :, None] + first_actions_code
if lookahead_delta is not None:
- r = rewards
- u = F.pad(r, (0, lookahead_delta - 1)).as_strided(
- (r.size(0), r.size(1), lookahead_delta),
- (r.size(1) + lookahead_delta - 1, 1, 1),
- )
- a = u[:, :, 1:].min(dim=-1).values
- b = u[:, :, 1:].max(dim=-1).values
+ # r = rewards
+ # u = F.pad(r, (0, lookahead_delta - 1)).as_strided(
+ # (r.size(0), r.size(1), lookahead_delta),
+ # (r.size(1) + lookahead_delta - 1, 1, 1),
+ # )
+ # a = u[:, :, 1:].min(dim=-1).values
+ # b = u[:, :, 1:].max(dim=-1).values
+ # s = (a < 0).long() * a + (a >= 0).long() * b
+ # lookahead_rewards = (1 + s[:, :, None]) + first_lookahead_rewards_code
+
+ # a[n,t]=min_s>t r[n,s]
+ a = rewards.new_zeros(rewards.size())
+ b = rewards.new_zeros(rewards.size())
+ for t in range(a.size(1) - 1):
+ a[:, t] = rewards[:, t + 1 :].min(dim=-1).values
+ b[:, t] = rewards[:, t + 1 :].max(dim=-1).values
s = (a < 0).long() * a + (a >= 0).long() * b
lookahead_rewards = (1 + s[:, :, None]) + first_lookahead_rewards_code
states, actions, rewards, lookahead_rewards=None, unicode=False, ansi_colors=False
):
if unicode:
- symbols = " █@$"
+ symbols = "·█@$"
# vert, hori, cross, thin_hori = "║", "═", "╬", "─"
vert, hori, cross, thin_vert, thin_hori = "┃", "━", "╋", "│", "─"
else:
+ "\n"
)
- result += (vert + thin_hori * states.size(-1)) * states.size(1) + vert + "\n"
+ # result += (vert + thin_hori * states.size(-1)) * states.size(1) + vert + "\n"
def status_bar(a, r, lr=None):
a, r = a.item(), r.item()
######################################################################
if __name__ == "__main__":
- nb, height, width, T = 10, 4, 6, 20
- states, actions, rewards = generate_episodes(nb, height, width, T)
+ nb, height, width, T, nb_walls = 25, 5, 7, 25, 5
+ states, actions, rewards = generate_episodes(nb, height, width, T, nb_walls)
seq = episodes2seq(states, actions, rewards, lookahead_delta=T)
s, a, r, lr = seq2episodes(seq, height, width, lookahead=True)
print(episodes2str(s, a, r, lookahead_rewards=lr, unicode=True, ansi_colors=True))
- print()
- for s in seq2str(seq):
- print(s)
+ # print()
+ # for s in seq2str(seq):
+ # print(s)