Update.

[picoclvr.git] / tasks.py

diff --git a/tasks.py b/tasks.py
index ca71182..0eed2aa 100755 (executable)
--- a/tasks.py
+++ b/tasks.py
@@ -12,6 +12,13 @@ import torch, torchvision
 from torch import nn
 from torch.nn import functional as F
 
+from mygpt import BracketedSequence
+
+try:
+    from graph import save_attention_image
+except ImportError:
+    save_attention_image = None
+
 ######################################################################
 
 
@@ -1102,15 +1109,16 @@ class RPL(Task):
         self.id2token = dict([(n, c) for c, n in self.token2id.items()])
 
         self.t_nul = self.token2id["<nul>"]
-        self.t_input = self.token2id["<input>"]
-        self.t_output = self.token2id["<output>"]
-        self.t_prog = self.token2id["<prog>"]
+        self.t_input = self.token2id["<in>"]
+        self.t_output = self.token2id["<out>"]
+        self.t_prog = self.token2id["<prg>"]
         self.t_end = self.token2id["<end>"]
 
         self.train_input = self.tensorize(train_sequences)
         self.test_input = self.tensorize(test_sequences)
 
         if no_prog:
+            # Excise the program from every train and test example
             k = torch.arange(self.train_input.size(1), device=self.train_input.device)[
                 None, :
             ]
@@ -1185,13 +1193,13 @@ class RPL(Task):
             )
 
             sum_nb_total, sum_nb_errors = 0, 0
-            for x, y in zip(input, result):
-                seq = [self.id2token[i.item()] for i in y]
+            for one_input, one_result in zip(input, result):
+                seq = [self.id2token[i.item()] for i in one_result]
                 nb_total, nb_errors, prog, stacks = rpl.compute_nb_errors(seq)
                 sum_nb_total += 1
                 sum_nb_errors += 0 if nb_errors == 0 else 1
                 if nb_to_log > 0:
-                    gt_seq = [self.id2token[i.item()] for i in x]
+                    gt_seq = [self.id2token[i.item()] for i in one_input]
                     _, _, gt_prog, _ = rpl.compute_nb_errors(gt_seq)
                     gt_prog = " ".join([str(x) for x in gt_prog])
                     prog = " ".join([str(x) for x in prog])
@@ -1232,14 +1240,20 @@ class RPL(Task):
             )
 
             sum_nb_total, sum_nb_errors = 0, 0
-            for x, y, i, j in zip(input, result, last_output_idx, first_prog_idx):
-                seq = [self.id2token[i.item()] for i in y]
+            for one_input, one_result, i, j in zip(
+                input, result, last_output_idx, first_prog_idx
+            ):
+                seq = [self.id2token[i.item()] for i in one_result]
                 sum_nb_total += 1
-                correct = (x - y).abs().max() == 0
+                correct = (one_input - one_result).abs().max() == 0
                 sum_nb_errors += 0 if correct else 1
                 if nb_to_log > 0:
-                    result_stack = [self.id2token[i.item()] for i in y[i : j + 1]]
-                    target_stack = [self.id2token[i.item()] for i in x[i : j + 1]]
+                    result_stack = [
+                        self.id2token[i.item()] for i in one_result[i : j + 1]
+                    ]
+                    target_stack = [
+                        self.id2token[i.item()] for i in one_input[i : j + 1]
+                    ]
                     comment = "*" if correct else "-"
                     result_stack = " ".join([str(x) for x in result_stack])
                     target_stack = " ".join([str(x) for x in target_stack])
@@ -1269,6 +1283,49 @@ class RPL(Task):
             f"accuracy_output_test {n_epoch} nb_total {test_nb_total} nb_errors {test_nb_errors} accuracy {100.0*(1-test_nb_errors/test_nb_total):.02f}%"
         )
 
+        if save_attention_image is not None:
+            input = self.test_input[:10]
+            result = input.clone()
+            s = (result == self.t_prog).long()
+            ar_mask = (s.cumsum(dim=1) - s).clamp(min=0, max=1)
+            result = (1 - ar_mask) * result + ar_mask * self.t_nul
+
+            masked_inplace_autoregression(
+                model,
+                self.batch_size,
+                result,
+                ar_mask,
+                deterministic_synthesis,
+                device=self.device,
+            )
+
+            with torch.autograd.no_grad():
+                t = model.training
+                model.eval()
+                model.record_attention(True)
+                model(BracketedSequence(result))
+                model.train(t)
+                attention = model.retrieve_attention()
+                model.record_attention(False)
+
+            n_sample = 0
+            tokens_output = [self.id2token[i.item()] for i in result[n_sample]]
+            tokens_input = ["n/a"] + tokens_output[:-1]
+            for n_head in range(attention[0].size(1)):
+                filename = f"rpl_attention_{n_epoch}_h{n_head}.pdf"
+                save_attention_image(
+                    filename,
+                    tokens_input,
+                    tokens_output,
+                    attention,
+                    n_sample=n_sample,
+                    n_head=n_head,
+                    token_gap=12,
+                    layer_gap=40,
+                    # k_top=2,
+                )
+                logger(f"wrote {filename}")
+
 
 ######################################################################