From 61cd7a140e44ccb966bad941fa31e395e51e50e2 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Fran=C3=A7ois=20Fleuret?= <francois@fleuret.org>
Date: Sat, 11 Mar 2023 20:31:07 +0100
Subject: [PATCH] Update.

---
 beaver.py | 77 ++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 50 insertions(+), 27 deletions(-)

diff --git a/beaver.py b/beaver.py
index 4d4f98d..920a446 100755
--- a/beaver.py
+++ b/beaver.py
@@ -38,9 +38,11 @@ parser.add_argument("--seed", type=int, default=0)
 
 parser.add_argument("--nb_epochs", type=int, default=25)
 
-parser.add_argument("--batch_size", type=int, default=100)
+parser.add_argument("--nb_train_samples", type=int, default=200000)
 
-parser.add_argument("--data_size", type=int, default=-1)
+parser.add_argument("--nb_test_samples", type=int, default=50000)
+
+parser.add_argument("--batch_size", type=int, default=25)
 
 parser.add_argument("--optim", type=str, default="adam")
 
@@ -170,16 +172,23 @@ class TaskMaze(Task):
         s = s.reshape(s.size(0), -1, self.height, self.width)
         return (s[:, k] for k in range(s.size(1)))
 
-    def __init__(self, batch_size, height, width, nb_walls, device=torch.device("cpu")):
+    def __init__(
+        self,
+        nb_train_samples,
+        nb_test_samples,
+        batch_size,
+        height,
+        width,
+        nb_walls,
+        device=torch.device("cpu"),
+    ):
         self.batch_size = batch_size
         self.height = height
         self.width = width
         self.device = device
 
-        nb = args.data_size if args.data_size > 0 else 250000
-
         mazes_train, paths_train = maze.create_maze_data(
-            (4 * nb) // 5,
+            nb_train_samples,
             height=height,
             width=width,
             nb_walls=nb_walls,
@@ -190,7 +199,7 @@ class TaskMaze(Task):
         self.nb_codes = self.train_input.max() + 1
 
         mazes_test, paths_test = maze.create_maze_data(
-            nb // 5,
+            nb_test_samples,
             height=height,
             width=width,
             nb_walls=nb_walls,
@@ -199,9 +208,11 @@ class TaskMaze(Task):
         mazes_test, paths_test = mazes_test.to(device), paths_test.to(device)
         self.test_input = self.map2seq(mazes_test, paths_test)
 
-    def batches(self, split="train"):
+    def batches(self, split="train", nb_to_use=-1):
         assert split in {"train", "test"}
         input = self.train_input if split == "train" else self.test_input
+        if nb_to_use > 0:
+            input = input[:nb_to_use]
         for batch in tqdm.tqdm(
             input.split(self.batch_size), dynamic_ncols=True, desc=f"epoch-{split}"
         ):
@@ -210,9 +221,9 @@ class TaskMaze(Task):
     def vocabulary_size(self):
         return self.nb_codes
 
-    def compute_error(self, model, split="train"):
+    def compute_error(self, model, split="train", nb_to_use=-1):
         nb_total, nb_correct = 0, 0
-        for input in task.batches(split):
+        for input in task.batches(split, nb_to_use):
             result = input.clone()
             ar_mask = result.new_zeros(result.size())
             ar_mask[:, self.height * self.width :] = 1
@@ -224,26 +235,36 @@ class TaskMaze(Task):
         return nb_total, nb_correct
 
     def produce_results(self, n_epoch, model):
-        train_nb_total, train_nb_correct = self.compute_error(model, "train")
-        log_string(
-            f"accuracy_train nb_total {train_nb_total} nb_correct {train_nb_correct} accuracy {(100.0*train_nb_correct)/train_nb_total:.02f}%"
-        )
-
-        test_nb_total, test_nb_correct = self.compute_error(model, "test")
-        log_string(
-            f"accuracy_test nb_total {test_nb_total} nb_correct {test_nb_correct} accuracy {(100.0*test_nb_correct)/test_nb_total:.02f}%"
-        )
+        with torch.autograd.no_grad():
+            t = model.training
+            model.eval()
+
+            train_nb_total, train_nb_correct = self.compute_error(
+                model, "train", nb_to_use=1000
+            )
+            log_string(
+                f"accuracy_train nb_total {train_nb_total} nb_correct {train_nb_correct} accuracy {(100.0*train_nb_correct)/train_nb_total:.02f}%"
+            )
+
+            test_nb_total, test_nb_correct = self.compute_error(
+                model, "test", nb_to_use=1000
+            )
+            log_string(
+                f"accuracy_test nb_total {test_nb_total} nb_correct {test_nb_correct} accuracy {(100.0*test_nb_correct)/test_nb_total:.02f}%"
+            )
+
+            input = self.test_input[:32]
+            result = input.clone()
+            ar_mask = result.new_zeros(result.size())
 
-        input = self.test_input[:32]
-        result = input.clone()
-        ar_mask = result.new_zeros(result.size())
+            ar_mask[:, self.height * self.width :] = 1
+            masked_inplace_autoregression(model, self.batch_size, result, ar_mask)
 
-        ar_mask[:, self.height * self.width :] = 1
-        masked_inplace_autoregression(model, self.batch_size, result, ar_mask)
+            mazes, paths = self.seq2map(input)
+            _, predicted_paths = self.seq2map(result)
+            maze.save_image(f"result_{n_epoch:04d}.png", mazes, paths, predicted_paths)
 
-        mazes, paths = self.seq2map(input)
-        _, predicted_paths = self.seq2map(result)
-        maze.save_image(f"result_{n_epoch:04d}.png", mazes, paths, predicted_paths)
+            model.train(t)
 
 
 ######################################################################
@@ -252,6 +273,8 @@ log_string(f"device {device}")
 
 
 task = TaskMaze(
+    nb_train_samples=args.nb_train_samples,
+    nb_test_samples=args.nb_test_samples,
     batch_size=args.batch_size,
     height=args.world_height,
     width=args.world_width,
-- 
2.20.1