man python stinks...

added more valves for options.
will update the console every 5 seconds when training now

pairwise_comp_nn.py

@@ -3,7 +3,7 @@ from torch import nn
 
 # 2) Number "embedding" network: R -> R^d
 class NumberEmbedder(nn.Module):
-    def __init__(self, d=4, hidden=16):
+    def __init__(self, d=2, hidden=4):
         super().__init__()
         self.net = nn.Sequential(
             nn.Linear(1, hidden),
@@ -14,9 +14,9 @@ class NumberEmbedder(nn.Module):
     def forward(self, x):
         return self.net(x)
 
-# 3) Comparator head: takes (ea, eb, e) -> logit for "a > b"
+# MLP Comparator head: takes (ea, eb, e) -> logit for "a > b"
 class PairwiseComparator(nn.Module):
-    def __init__(self, d=4, hidden=16, k=0.5):
+    def __init__(self, d=2, hidden=4, k=0.5):
         super().__init__()
         self.log_k = nn.Parameter(torch.tensor([k]))
         self.embed = NumberEmbedder(d, hidden)
@@ -29,7 +29,7 @@ class PairwiseComparator(nn.Module):
         )
 
     def forward(self, a, b):
-        # trying to force antisym here: h(a,b)=−h(b,a)
+        # trying to force antisym here: h(a,b)=-h(b,a)
         phi = self.head(self.embed(a-b))
         phi_neg = self.head(self.embed(b-a))
         logit = phi - phi_neg

pairwise_compare.py

@@ -18,12 +18,14 @@ DEVICE = torch.accelerator.current_accelerator() if torch.accelerator.is_availab
 
 # Valves
 DIMENSIONS = 2
-TRAIN_STEPS = 5000
+HIDDEN_NEURONS = 4
+ADAMW_LR = 5e-3
+ADAMW_DECAY = 5e-4
+TRAIN_STEPS = 2000
 TRAIN_BATCHSZ = 8192
 TRAIN_PROGRESS = 10
 BATCH_LOWER = -100.0
 BATCH_UPPER = 100.0
-DO_VERBOSE_EARLY_TRAIN = False
 
 # Files
 MODEL_PATH = "./files/pwcomp.model"
@@ -40,7 +42,6 @@ def parse_training_log(file_path: str) -> pd.DataFrame:
     with lzma.open(file_path, mode='rt') as f:
         text = f.read()
         
-
     pattern = re.compile(r"step=\s*(\d+)\s+loss=([0-9.]+)\s+acc=([0-9.]+)")
     rows = [(int(s), float(l), float(a)) for s, l, a in pattern.findall(text)]
     df = pd.DataFrame(rows, columns=["step", "loss", "acc"]).sort_values("step").reset_index(drop=True)
@@ -54,7 +55,7 @@ def parse_training_log(file_path: str) -> pd.DataFrame:
 # TODO: Move plotting into its own file
 def plt_loss_tstep(df: pd.DataFrame) -> None:
     # Plot 1: Loss
-    plt.figure(figsize=(8, 4))
+    plt.figure(figsize=(10, 6))
     plt.plot(df["step"], df["loss_clamped"])
     plt.yscale("log")
     plt.xlabel("Step")
@@ -70,7 +71,7 @@ def plt_loss_tstep(df: pd.DataFrame) -> None:
 def plt_acc_tstep(df: pd.DataFrame, eps=1e-10) -> None:
     # Plot 2: Accuracy
     df["err"] = (1.0 - df["acc"]).clip(lower=eps)
-    plt.figure(figsize=(8, 4))
+    plt.figure(figsize=(10, 6))
     plt.plot(df["step"], df["err"])
     plt.yscale("log")
     plt.xlabel("Step")
@@ -100,10 +101,14 @@ def plt_embeddings(model: comp_nn.PairwiseComparator) -> None:
     # move data back to CPU for plotting
     embeddings = embeddings.cpu()
     xs = xs.cpu()
-
+    
+    # Plot 3: x vs h(x)
+    plt.figure(figsize=(10, 6))
     for i in range(embeddings.shape[1]):
         plt.plot(xs.squeeze(), embeddings[:, i], label=f"dim {i}")
-        
+    plt.title("x vs h(x)")
+    plt.xlabel("x [input]")
+    plt.ylabel("h(x) [embedding]")
     plt.legend()
     plt.savefig(EMBED_CHART_PATH)
     plt.close()
@@ -151,13 +156,15 @@ def training_entry():
     # the seed should initialized normally otherwise
     set_seed(0)
 
-    model = comp_nn.PairwiseComparator(d=DIMENSIONS).to(DEVICE)
+    model = comp_nn.PairwiseComparator(d=DIMENSIONS, hidden=HIDDEN_NEURONS).to(DEVICE)
-    opt = torch.optim.AdamW(model.parameters(), lr=8e-4, weight_decay=1e-3)
+    opt = torch.optim.AdamW(model.parameters(), lr=ADAMW_LR, weight_decay=ADAMW_DECAY)
 
     log.info(f"Using {TRAINING_LOG_PATH} as the logging destination for training...")
     with lzma.open(TRAINING_LOG_PATH, mode='wt') as tlog:
         # training loop
         training_start_time = datetime.datetime.now()
+        last_ack = datetime.datetime.now()
+
         for step in range(TRAIN_STEPS):
             a, b, y = sample_batch(TRAIN_BATCHSZ)
             a, b, y = a.to(DEVICE), b.to(DEVICE), y.to(DEVICE)
@@ -169,15 +176,17 @@ def training_entry():
             loss_fn.backward()
             opt.step()
 
-            if step % TRAIN_PROGRESS == 0:
+            with torch.no_grad():
-                with torch.no_grad():
+                pred = (torch.sigmoid(logits) > 0.5).float()
-                    pred = (torch.sigmoid(logits) > 0.5).float()
+                acc = (pred == y).float().mean().item()
-                    acc = (pred == y).float().mean().item()
+            tlog.write(f"step={step:5d} loss={loss_fn.item():.7f} acc={acc:.7f}\n")
-                tlog.write(f"step={step:5d} loss={loss_fn.item():.7f} acc={acc:.7f}\n")
 
-                # also print to normal text log occasionally to show some activity.
+            # also print to normal text log occasionally to show some activity.
-                if step % 2500 == 0:
+            # every 10 steps check if its been longer than 5 seconds since we've updated the user
+            if step % 10 == 0:
+                if (datetime.datetime.now() - last_ack).total_seconds() > 5:
                     log.info(f"still training... step={step} of {TRAIN_STEPS}")
+                    last_ack = datetime.datetime.now()
 
     training_end_time = datetime.datetime.now()
     log.info(f"Training steps complete. Start time: {training_start_time} End time: {training_end_time}")
@@ -193,14 +202,14 @@ def training_entry():
     log.info(f"Final test acc: {acc} errors: {errors}")
 
     # embed model dimensions into the model serialization
-    torch.save({"state_dict": model.state_dict(), "d": DIMENSIONS}, MODEL_PATH)
+    torch.save({"state_dict": model.state_dict(), "d": DIMENSIONS, "h": HIDDEN_NEURONS}, MODEL_PATH)
     log.info(f"Saved PyTorch Model State to {MODEL_PATH}")
 
 def infer_entry():
     get_torch_info()
 
     model_ckpt = torch.load(MODEL_PATH, map_location=DEVICE)
-    model = comp_nn.PairwiseComparator(d=model_ckpt["d"]).to(DEVICE)
+    model = comp_nn.PairwiseComparator(d=model_ckpt["d"], hidden=model_ckpt["h"]).to(DEVICE)
     model.load_state_dict(model_ckpt["state_dict"])
     model.eval()
 
@@ -226,7 +235,7 @@ def graphs_entry():
     get_torch_info()
 
     model_ckpt = torch.load(MODEL_PATH, map_location=DEVICE)
-    model = comp_nn.PairwiseComparator(d=model_ckpt["d"]).to(DEVICE)
+    model = comp_nn.PairwiseComparator(d=model_ckpt["d"], hidden=model_ckpt["h"]).to(DEVICE)
     model.load_state_dict(model_ckpt["state_dict"])
     model.eval()