Create trainer_v4_sgd_warm_restarts.py

trainer_v4_sgd_warm_restarts.py

@@ -0,0 +1,1330 @@
+# train_cantor_fusion_hf.py - PRODUCTION WITH ADAMW + WARM RESTARTS
+
+"""
+Cantor Fusion Classifier with AdamW + Cosine Warm Restarts
+-----------------------------------------------------------
+Features:
+    - AdamW optimizer (best for ViTs)
+    - CosineAnnealingWarmRestarts (automatic drop + restart cycles)
+    - HuggingFace Hub uploads (ONE shared repo, organized by run)
+    - TensorBoard logging (loss, accuracy, fusion metrics, LR tracking)
+    - Easy CIFAR-10/100 switching
+    - Automatic checkpoint management
+    - SafeTensors format (ClamAV safe)
+
+Author: AbstractPhil
+License: MIT
+"""
+
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+from torch.utils.data import DataLoader
+from torch.utils.tensorboard import SummaryWriter
+from torchvision import datasets, transforms
+from torch.cuda.amp import autocast, GradScaler
+from safetensors.torch import save_file, load_file
+
+import math
+import os
+import json
+from typing import Optional, Dict, List, Tuple, Union
+from dataclasses import dataclass, asdict
+import time
+from pathlib import Path
+from tqdm import tqdm
+
+# HuggingFace
+from huggingface_hub import HfApi, create_repo, upload_folder, upload_file
+import yaml
+
+# Import from your repo
+from geovocab2.train.model.layers.attention.cantor_multiheaded_fusion import (
+    CantorMultiheadFusion,
+    CantorFusionConfig
+)
+from geovocab2.shapes.factory.cantor_route_factory import (
+    CantorRouteFactory,
+    RouteMode,
+    SimplexConfig
+)
+
+
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+# Configuration
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+@dataclass
+class CantorTrainingConfig:
+    """Complete configuration for Cantor fusion training with AdamW + Warm Restarts."""
+    
+    # Dataset
+    dataset: str = "cifar10"  # "cifar10" or "cifar100"
+    num_classes: int = 10
+    
+    # Architecture
+    image_size: int = 32
+    patch_size: int = 4
+    embed_dim: int = 384
+    num_fusion_blocks: int = 6
+    num_heads: int = 8
+    fusion_window: int = 32
+    fusion_mode: str = "weighted"  # "weighted" or "consciousness"
+    k_simplex: int = 4
+    use_beatrix: bool = False
+    beatrix_tau: float = 0.25
+    
+    # Optimization
+    precompute_geometric: bool = True
+    use_torch_compile: bool = True
+    use_mixed_precision: bool = False
+    
+    # Regularization
+    dropout: float = 0.1
+    drop_path_rate: float = 0.1
+    label_smoothing: float = 0.1
+    
+    # Training - Optimizer (AdamW)
+    optimizer_type: str = "adamw"  # "sgd" or "adamw"
+    batch_size: int = 128
+    num_epochs: int = 300
+    learning_rate: float = 3e-4  # AdamW default
+    weight_decay: float = 0.05
+    grad_clip: float = 1.0
+    
+    # SGD-specific (if needed)
+    sgd_momentum: float = 0.9
+    sgd_nesterov: bool = True
+    
+    # AdamW-specific  
+    adamw_betas: Tuple[float, float] = (0.9, 0.999)
+    adamw_eps: float = 1e-8
+    
+    # Learning rate schedule - WARM RESTARTS
+    scheduler_type: str = "cosine_restarts"  # "multistep", "cosine", "cosine_restarts"
+    
+    # CosineAnnealingWarmRestarts parameters
+    restart_period: int = 50  # T_0: epochs until first restart
+    restart_mult: int = 2     # T_mult: multiply period after each restart
+    min_lr: float = 1e-7      # eta_min: minimum learning rate
+    
+    # MultiStepLR (for SGD fallback)
+    lr_milestones: List[int] = None
+    lr_gamma: float = 0.2
+    
+    # Cosine annealing (regular, no restarts)
+    warmup_epochs: int = 10
+    
+    # Data augmentation
+    use_augmentation: bool = True
+    use_autoaugment: bool = True
+    use_cutout: bool = False
+    cutout_length: int = 16
+    
+    # System
+    device: str = "cuda" if torch.cuda.is_available() else "cpu"
+    num_workers: int = 4
+    seed: int = 42
+    
+    # Paths
+    weights_dir: str = "weights"
+    model_name: str = "vit-beans-v3"
+    run_name: Optional[str] = None  # Auto-generated if None
+    
+    # HuggingFace - ONE SHARED REPO
+    hf_username: str = "AbstractPhil"
+    hf_repo_name: Optional[str] = None
+    upload_to_hf: bool = True
+    hf_token: Optional[str] = None
+    
+    # Logging
+    log_interval: int = 50
+    save_interval: int = 10
+    checkpoint_upload_interval: int = 20
+    
+    def __post_init__(self):
+        # Auto-set num_classes based on dataset
+        if self.dataset == "cifar10":
+            self.num_classes = 10
+        elif self.dataset == "cifar100":
+            self.num_classes = 100
+        else:
+            raise ValueError(f"Unknown dataset: {self.dataset}")
+        
+        # Set default milestones if None (for multistep fallback)
+        if self.lr_milestones is None:
+            if self.num_epochs >= 200:
+                self.lr_milestones = [60, 120, 160]
+            elif self.num_epochs >= 100:
+                self.lr_milestones = [30, 60, 80]
+            else:
+                self.lr_milestones = [
+                    int(self.num_epochs * 0.5),
+                    int(self.num_epochs * 0.75)
+                ]
+        
+        # Auto-generate run name
+        if self.run_name is None:
+            timestamp = time.strftime("%Y%m%d_%H%M%S")
+            opt_name = self.optimizer_type.upper()
+            sched_name = "WarmRestart" if self.scheduler_type == "cosine_restarts" else self.scheduler_type
+            self.run_name = f"{self.dataset}_{self.fusion_mode}_{opt_name}_{sched_name}_{timestamp}"
+        
+        # ONE SHARED REPO for all runs
+        if self.hf_repo_name is None:
+            self.hf_repo_name = self.model_name
+        
+        # Set HF token from environment if not provided
+        if self.hf_token is None:
+            self.hf_token = os.environ.get("HF_TOKEN")
+        
+        # Calculate derived values
+        assert self.image_size % self.patch_size == 0
+        self.num_patches = (self.image_size // self.patch_size) ** 2
+        self.patch_dim = self.patch_size * self.patch_size * 3
+        
+        # Create paths
+        self.output_dir = Path(self.weights_dir) / self.model_name / self.run_name
+        self.checkpoint_dir = self.output_dir / "checkpoints"
+        self.tensorboard_dir = self.output_dir / "tensorboard"
+        
+        # Create directories
+        self.output_dir.mkdir(parents=True, exist_ok=True)
+        self.checkpoint_dir.mkdir(parents=True, exist_ok=True)
+        self.tensorboard_dir.mkdir(parents=True, exist_ok=True)
+    
+    def save(self, path: Union[str, Path]):
+        """Save config to YAML file."""
+        path = Path(path)
+        config_dict = asdict(self)
+        # Convert tuples to lists for YAML
+        if 'adamw_betas' in config_dict:
+            config_dict['adamw_betas'] = list(config_dict['adamw_betas'])
+        with open(path, 'w') as f:
+            yaml.dump(config_dict, f, default_flow_style=False)
+    
+    @classmethod
+    def load(cls, path: Union[str, Path]):
+        """Load config from YAML file."""
+        path = Path(path)
+        with open(path, 'r') as f:
+            config_dict = yaml.safe_load(f)
+        # Convert lists back to tuples
+        if 'adamw_betas' in config_dict:
+            config_dict['adamw_betas'] = tuple(config_dict['adamw_betas'])
+        return cls(**config_dict)
+
+
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+# Model Components (unchanged from previous version)
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+class PatchEmbedding(nn.Module):
+    """Patch embedding layer."""
+    def __init__(self, config: CantorTrainingConfig):
+        super().__init__()
+        self.config = config
+        self.proj = nn.Conv2d(3, config.embed_dim, kernel_size=config.patch_size, stride=config.patch_size)
+        self.pos_embed = nn.Parameter(torch.randn(1, config.num_patches, config.embed_dim) * 0.02)
+    
+    def forward(self, x: torch.Tensor) -> torch.Tensor:
+        x = self.proj(x)
+        x = x.flatten(2).transpose(1, 2)
+        x = x + self.pos_embed
+        return x
+
+
+class DropPath(nn.Module):
+    """Stochastic depth."""
+    def __init__(self, drop_prob: float = 0.0):
+        super().__init__()
+        self.drop_prob = drop_prob
+
+    def forward(self, x):
+        if self.drop_prob == 0. or not self.training:
+            return x
+        keep_prob = 1 - self.drop_prob
+        shape = (x.shape[0],) + (1,) * (x.ndim - 1)
+        random_tensor = keep_prob + torch.rand(shape, dtype=x.dtype, device=x.device)
+        random_tensor.floor_()
+        return x.div(keep_prob) * random_tensor
+
+
+class CantorFusionBlock(nn.Module):
+    """Cantor fusion block."""
+    def __init__(self, config: CantorTrainingConfig, drop_path: float = 0.0):
+        super().__init__()
+        self.norm1 = nn.LayerNorm(config.embed_dim)
+        
+        fusion_config = CantorFusionConfig(
+            dim=config.embed_dim,
+            num_heads=config.num_heads,
+            fusion_window=config.fusion_window,
+            fusion_mode=config.fusion_mode,
+            k_simplex=config.k_simplex,
+            use_beatrix_routing=config.use_beatrix,
+            use_consciousness_weighting=(config.fusion_mode == "consciousness"),
+            beatrix_tau=config.beatrix_tau,
+            use_gating=True,
+            dropout=config.dropout,
+            residual=False,
+            precompute_staircase=config.precompute_geometric,
+            precompute_routes=config.precompute_geometric,
+            precompute_distances=config.precompute_geometric,
+            use_optimized_gather=True,
+            staircase_cache_sizes=[config.num_patches],
+            use_torch_compile=config.use_torch_compile
+        )
+        self.fusion = CantorMultiheadFusion(fusion_config)
+        
+        self.norm2 = nn.LayerNorm(config.embed_dim)
+        mlp_hidden = config.embed_dim * 4
+        self.mlp = nn.Sequential(
+            nn.Linear(config.embed_dim, mlp_hidden),
+            nn.GELU(),
+            nn.Dropout(config.dropout),
+            nn.Linear(mlp_hidden, config.embed_dim),
+            nn.Dropout(config.dropout)
+        )
+        self.drop_path = DropPath(drop_path) if drop_path > 0 else nn.Identity()
+    
+    def forward(self, x: torch.Tensor, return_fusion_info: bool = False) -> Union[torch.Tensor, Tuple[torch.Tensor, Dict]]:
+        fusion_result = self.fusion(self.norm1(x))
+        x = x + self.drop_path(fusion_result['output'])
+        x = x + self.drop_path(self.mlp(self.norm2(x)))
+        
+        if return_fusion_info:
+            fusion_info = {
+                'consciousness': fusion_result.get('consciousness'),
+                'cantor_measure': fusion_result.get('cantor_measure')
+            }
+            return x, fusion_info
+        return x
+
+
+class CantorClassifier(nn.Module):
+    """Cantor fusion classifier."""
+    def __init__(self, config: CantorTrainingConfig):
+        super().__init__()
+        self.config = config
+        
+        self.patch_embed = PatchEmbedding(config)
+        
+        dpr = [x.item() for x in torch.linspace(0, config.drop_path_rate, config.num_fusion_blocks)]
+        self.blocks = nn.ModuleList([
+            CantorFusionBlock(config, drop_path=dpr[i])
+            for i in range(config.num_fusion_blocks)
+        ])
+        
+        self.norm = nn.LayerNorm(config.embed_dim)
+        self.head = nn.Linear(config.embed_dim, config.num_classes)
+        
+        self.apply(self._init_weights)
+    
+    def _init_weights(self, m):
+        if isinstance(m, nn.Linear):
+            nn.init.trunc_normal_(m.weight, std=0.02)
+            if m.bias is not None:
+                nn.init.constant_(m.bias, 0)
+        elif isinstance(m, nn.LayerNorm):
+            nn.init.constant_(m.bias, 0)
+            nn.init.constant_(m.weight, 1.0)
+        elif isinstance(m, nn.Conv2d):
+            nn.init.kaiming_normal_(m.weight, mode='fan_out', nonlinearity='relu')
+    
+    def forward(self, x: torch.Tensor, return_fusion_info: bool = False) -> Union[torch.Tensor, Tuple[torch.Tensor, List[Dict]]]:
+        x = self.patch_embed(x)
+        
+        fusion_infos = []
+        for i, block in enumerate(self.blocks):
+            if return_fusion_info and i == len(self.blocks) - 1:
+                x, fusion_info = block(x, return_fusion_info=True)
+                fusion_infos.append(fusion_info)
+            else:
+                x = block(x)
+        
+        x = self.norm(x)
+        x = x.mean(dim=1)
+        logits = self.head(x)
+        
+        if return_fusion_info:
+            return logits, fusion_infos
+        return logits
+
+
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+# HuggingFace Integration
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+class HuggingFaceUploader:
+    """Manages HuggingFace Hub uploads to ONE shared repo."""
+    
+    def __init__(self, config: CantorTrainingConfig):
+        self.config = config
+        self.api = HfApi(token=config.hf_token) if config.upload_to_hf else None
+        self.repo_id = f"{config.hf_username}/{config.hf_repo_name}"
+        self.run_prefix = f"runs/{config.run_name}"
+        
+        if config.upload_to_hf:
+            self._create_repo()
+            self._update_main_readme()
+    
+    def _create_repo(self):
+        """Create HuggingFace repo if it doesn't exist."""
+        try:
+            create_repo(
+                repo_id=self.repo_id,
+                token=self.config.hf_token,
+                exist_ok=True,
+                private=False
+            )
+            print(f"[HF] Repository: https://huggingface.co/{self.repo_id}")
+            print(f"[HF] Run folder: {self.run_prefix}")
+        except Exception as e:
+            print(f"[HF] Warning: Could not create repo: {e}")
+    
+    def _update_main_readme(self):
+        """Create or update the main shared README at repo root."""
+        if not self.config.upload_to_hf or self.api is None:
+            return
+        
+        main_readme = f"""---
+tags:
+- image-classification
+- cantor-fusion
+- geometric-deep-learning
+- safetensors
+- vision-transformer
+- warm-restarts
+library_name: pytorch
+datasets:
+- cifar10
+- cifar100
+metrics:
+- accuracy
+---
+
+# {self.config.hf_repo_name}
+
+**Geometric Deep Learning with Cantor Multihead Fusion + AdamW Warm Restarts**
+
+This repository contains multiple training runs using Cantor fusion architecture with pentachoron structures, geometric routing, and **CosineAnnealingWarmRestarts** for automatic exploration cycles.
+
+## Training Strategy: AdamW + Warm Restarts
+
+This model uses **AdamW with Cosine Annealing Warm Restarts** (SGDR):
+- **Drop phase**: LR decays from {self.config.learning_rate} → {self.config.min_lr} over {self.config.restart_period} epochs
+- **Restart phase**: LR jumps back to {self.config.learning_rate} to explore new regions
+- **Cycle multiplier**: Each cycle is {self.config.restart_mult}x longer than previous
+- **Benefits**: Automatic exploration + exploitation, finds better minima, robust training
+
+### Restart Schedule
+```
+Epochs 0-{self.config.restart_period}:   LR: {self.config.learning_rate} → {self.config.min_lr} (first cycle)
+Epoch {self.config.restart_period}:      LR: RESTART to {self.config.learning_rate} 🔄
+Epochs {self.config.restart_period}-{self.config.restart_period * (1 + self.config.restart_mult)}: LR: {self.config.learning_rate} → {self.config.min_lr} (longer cycle)
+...
+```
+
+## Current Run
+
+**Latest**: `{self.config.run_name}`
+- **Dataset**: {self.config.dataset.upper()}
+- **Fusion Mode**: {self.config.fusion_mode}
+- **Optimizer**: AdamW (adaptive moments)
+- **Scheduler**: CosineAnnealingWarmRestarts
+- **Architecture**: {self.config.num_fusion_blocks} blocks, {self.config.num_heads} heads
+- **Simplex**: {self.config.k_simplex}-simplex ({self.config.k_simplex + 1} vertices)
+
+## Architecture
+
+The Cantor Fusion architecture uses:
+- **Geometric Routing**: Pentachoron (5-simplex) structures for token routing
+- **Cantor Multihead Fusion**: Multiple fusion heads with geometric attention
+- **Beatrix Consciousness Routing**: Optional consciousness-aware token fusion
+- **SafeTensors Format**: All model weights use SafeTensors (not pickle)
+
+## Usage
+```python
+from huggingface_hub import hf_hub_download
+from safetensors.torch import load_file
+
+model_path = hf_hub_download(
+    repo_id="{self.repo_id}",
+    filename="runs/YOUR_RUN_NAME/checkpoints/best_model.safetensors"
+)
+
+state_dict = load_file(model_path)
+model.load_state_dict(state_dict)
+```
+
+## Citation
+```bibtex
+@misc{{{self.config.hf_repo_name.replace('-', '_')},
+  author = {{AbstractPhil}},
+  title = {{{self.config.hf_repo_name}: Geometric Deep Learning with Warm Restarts}},
+  year = {{2025}},
+  publisher = {{HuggingFace}},
+  url = {{https://huggingface.co/{self.repo_id}}}
+}}
+```
+
+---
+
+**Repository maintained by**: [@{self.config.hf_username}](https://huggingface.co/{self.config.hf_username})
+
+**Latest update**: {time.strftime("%Y-%m-%d %H:%M:%S")}
+"""
+        
+        main_readme_path = Path(self.config.weights_dir) / self.config.model_name / "MAIN_README.md"
+        main_readme_path.parent.mkdir(parents=True, exist_ok=True)
+        with open(main_readme_path, 'w') as f:
+            f.write(main_readme)
+        
+        try:
+            upload_file(
+                path_or_fileobj=str(main_readme_path),
+                path_in_repo="README.md",
+                repo_id=self.repo_id,
+                token=self.config.hf_token
+            )
+            print(f"[HF] Updated main README")
+        except Exception as e:
+            print(f"[HF] Main README upload failed: {e}")
+    
+    def upload_file(self, file_path: Path, repo_path: str):
+        """Upload single file to HuggingFace."""
+        if not self.config.upload_to_hf or self.api is None:
+            return
+        
+        try:
+            if not repo_path.startswith(self.run_prefix) and not repo_path.startswith("runs/"):
+                full_path = f"{self.run_prefix}/{repo_path}"
+            else:
+                full_path = repo_path
+            
+            upload_file(
+                path_or_fileobj=str(file_path),
+                path_in_repo=full_path,
+                repo_id=self.repo_id,
+                token=self.config.hf_token
+            )
+            print(f"[HF] ✓ Uploaded: {full_path}")
+        except Exception as e:
+            print(f"[HF] ✗ Upload failed ({full_path}): {e}")
+    
+    def upload_folder_contents(self, folder_path: Path, repo_folder: str):
+        """Upload entire folder to HuggingFace."""
+        if not self.config.upload_to_hf or self.api is None:
+            return
+        
+        try:
+            full_path = f"{self.run_prefix}/{repo_folder}"
+            upload_folder(
+                folder_path=str(folder_path),
+                repo_id=self.repo_id,
+                path_in_repo=full_path,
+                token=self.config.hf_token,
+                ignore_patterns=["*.pyc", "__pycache__"]
+            )
+            print(f"[HF] Uploaded folder: {full_path}")
+        except Exception as e:
+            print(f"[HF] Folder upload failed: {e}")
+    
+    def create_model_card(self, trainer_stats: Dict):
+        """Create and upload run-specific model card."""
+        if not self.config.upload_to_hf:
+            return
+        
+        run_card = f"""# Run: {self.config.run_name}
+
+## Configuration
+- **Dataset**: {self.config.dataset.upper()}
+- **Fusion Mode**: {self.config.fusion_mode}
+- **Parameters**: {trainer_stats['total_params']:,}
+- **Simplex**: {self.config.k_simplex}-simplex ({self.config.k_simplex + 1} vertices)
+
+## Performance
+- **Best Validation Accuracy**: {trainer_stats['best_acc']:.2f}%
+- **Training Time**: {trainer_stats['training_time']:.1f} hours
+- **Final Epoch**: {trainer_stats['final_epoch']}
+
+## Training Setup: AdamW + Warm Restarts
+- **Optimizer**: AdamW (lr={self.config.learning_rate}, wd={self.config.weight_decay})
+- **Scheduler**: CosineAnnealingWarmRestarts
+- **Restart Period (T_0)**: {self.config.restart_period} epochs
+- **Cycle Multiplier (T_mult)**: {self.config.restart_mult}x
+- **Min LR**: {self.config.min_lr}
+- **Batch Size**: {self.config.batch_size}
+- **Mixed Precision**: {trainer_stats.get('mixed_precision', False)}
+
+### Learning Rate Schedule
+```
+Cycle 1: Epochs 0-{self.config.restart_period}
+  LR: {self.config.learning_rate} → {self.config.min_lr} (drop)
+  Expected: Convergence to local minimum
+  
+Epoch {self.config.restart_period}: RESTART 🔄
+  LR: {self.config.min_lr} → {self.config.learning_rate} (jump!)
+  Expected: Escape local minimum, explore new regions
+  
+Cycle 2: Epochs {self.config.restart_period}-{self.config.restart_period * (1 + self.config.restart_mult)}
+  LR: {self.config.learning_rate} → {self.config.min_lr} (longer cycle)
+  Expected: Deeper convergence
+  
+... and so on
+```
+
+## Files
+- `{self.run_prefix}/checkpoints/best_model.safetensors` - Model weights
+- `{self.run_prefix}/checkpoints/best_training_state.pt` - Optimizer state
+- `{self.run_prefix}/config.yaml` - Full configuration
+- `{self.run_prefix}/tensorboard/` - TensorBoard logs (LR tracking!)
+
+## Usage
+```python
+from safetensors.torch import load_file
+from huggingface_hub import hf_hub_download
+
+model_path = hf_hub_download(
+    repo_id="{self.repo_id}",
+    filename="{self.run_prefix}/checkpoints/best_model.safetensors"
+)
+
+state_dict = load_file(model_path)
+model.load_state_dict(state_dict)
+```
+
+## Training Notes
+
+**Warm Restarts Benefits:**
+- 🔄 **Exploration**: Periodic LR jumps escape local minima
+- 📉 **Exploitation**: Long drop phases converge deeply
+- 🎯 **Robustness**: Multiple restarts find better solutions
+- 📊 **Monitoring**: Watch TensorBoard for restart effects!
+
+**Expected Behavior:**
+- Accuracy improves during each drop phase
+- Brief accuracy dips after restarts (exploration)
+- Overall upward trend across cycles
+- Best models often found late in long cycles
+
+---
+
+Built with geometric consciousness-aware routing using the Devil's Staircase (Beatrix) and pentachoron parameterization.
+
+**Training completed**: {time.strftime("%Y-%m-%d %H:%M:%S")}
+
+[← Back to main repository](https://huggingface.co/{self.repo_id})
+"""
+        
+        readme_path = self.config.output_dir / "RUN_README.md"
+        with open(readme_path, 'w') as f:
+            f.write(run_card)
+        
+        try:
+            upload_file(
+                path_or_fileobj=str(readme_path),
+                path_in_repo=f"{self.run_prefix}/README.md",
+                repo_id=self.repo_id,
+                token=self.config.hf_token
+            )
+            print(f"[HF] Uploaded run README")
+        except Exception as e:
+            print(f"[HF] Run README upload failed: {e}")
+
+
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+# Trainer with AdamW + CosineAnnealingWarmRestarts
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+class Trainer:
+    """Training manager with AdamW + Warm Restarts."""
+    
+    def __init__(self, config: CantorTrainingConfig):
+        self.config = config
+        self.device = torch.device(config.device)
+        
+        # Set seed
+        torch.manual_seed(config.seed)
+        if torch.cuda.is_available():
+            torch.cuda.manual_seed(config.seed)
+        
+        # Model
+        print("\n" + "=" * 70)
+        print(f"Initializing Cantor Classifier - {config.dataset.upper()}")
+        print("=" * 70)
+        
+        init_start = time.time()
+        self.model = CantorClassifier(config).to(self.device)
+        init_time = time.time() - init_start
+        
+        print(f"\n[Model] Initialization time: {init_time:.2f}s")
+        self.print_model_info()
+        
+        # Track restart epochs for logging
+        self.restart_epochs = self._calculate_restart_epochs()
+
+        # Optimizer
+        self.optimizer = self.create_optimizer()
+        
+        # Scheduler
+        self.scheduler = self.create_scheduler()
+        
+        # Loss
+        self.criterion = nn.CrossEntropyLoss(label_smoothing=config.label_smoothing)
+        
+        # Mixed precision
+        self.use_amp = config.use_mixed_precision and config.device == "cuda"
+        self.scaler = GradScaler() if self.use_amp else None
+        
+        if self.use_amp:
+            print(f"[Training] Mixed precision enabled")
+        
+        # TensorBoard
+        self.writer = SummaryWriter(log_dir=str(config.tensorboard_dir))
+        print(f"[TensorBoard] Logging to: {config.tensorboard_dir}")
+        print(f"[Checkpoints] Format: SafeTensors (ClamAV safe)")
+        
+        # HuggingFace
+        self.hf_uploader = HuggingFaceUploader(config) if config.upload_to_hf else None
+        
+        # Save config
+        config.save(config.output_dir / "config.yaml")
+        
+        # Metrics
+        self.best_acc = 0.0
+        self.global_step = 0
+        self.start_time = time.time()
+        self.upload_count = 0
+        
+    
+    def _calculate_restart_epochs(self) -> List[int]:
+        """Calculate when restarts will occur."""
+        if self.config.scheduler_type != "cosine_restarts":
+            return []
+        
+        restarts = []
+        current = self.config.restart_period
+        period = self.config.restart_period
+        
+        while current < self.config.num_epochs:
+            restarts.append(current)
+            period *= self.config.restart_mult
+            current += period
+        
+        return restarts
+    
+    def create_optimizer(self):
+        """Create optimizer based on config."""
+        if self.config.optimizer_type == "sgd":
+            print(f"\n[Optimizer] SGD")
+            print(f"  LR: {self.config.learning_rate}")
+            print(f"  Momentum: {self.config.sgd_momentum}")
+            print(f"  Nesterov: {self.config.sgd_nesterov}")
+            print(f"  Weight decay: {self.config.weight_decay}")
+            
+            return torch.optim.SGD(
+                self.model.parameters(),
+                lr=self.config.learning_rate,
+                momentum=self.config.sgd_momentum,
+                weight_decay=self.config.weight_decay,
+                nesterov=self.config.sgd_nesterov
+            )
+        
+        elif self.config.optimizer_type == "adamw":
+            print(f"\n[Optimizer] AdamW")
+            print(f"  LR: {self.config.learning_rate}")
+            print(f"  Betas: {self.config.adamw_betas}")
+            print(f"  Weight decay: {self.config.weight_decay}")
+            
+            return torch.optim.AdamW(
+                self.model.parameters(),
+                lr=self.config.learning_rate,
+                betas=self.config.adamw_betas,
+                eps=self.config.adamw_eps,
+                weight_decay=self.config.weight_decay
+            )
+        
+        else:
+            raise ValueError(f"Unknown optimizer: {self.config.optimizer_type}")
+    
+    def create_scheduler(self):
+        """Create LR scheduler based on config."""
+        if self.config.scheduler_type == "cosine_restarts":
+            print(f"\n[Scheduler] CosineAnnealingWarmRestarts")
+            print(f"  T_0 (restart period): {self.config.restart_period} epochs")
+            print(f"  T_mult (cycle multiplier): {self.config.restart_mult}x")
+            print(f"  Min LR: {self.config.min_lr}")
+            print(f"\n  Restart schedule:")
+            for i, epoch in enumerate(self.restart_epochs[:5]):  # Show first 5
+                print(f"    Restart #{i+1}: Epoch {epoch}")
+            if len(self.restart_epochs) > 5:
+                print(f"    ... and {len(self.restart_epochs) - 5} more")
+            
+            return torch.optim.lr_scheduler.CosineAnnealingWarmRestarts(
+                self.optimizer,
+                T_0=self.config.restart_period,
+                T_mult=self.config.restart_mult,
+                eta_min=self.config.min_lr
+            )
+        
+        elif self.config.scheduler_type == "multistep":
+            print(f"\n[Scheduler] MultiStepLR")
+            print(f"  Milestones: {self.config.lr_milestones}")
+            print(f"  Gamma: {self.config.lr_gamma}")
+            
+            return torch.optim.lr_scheduler.MultiStepLR(
+                self.optimizer,
+                milestones=self.config.lr_milestones,
+                gamma=self.config.lr_gamma
+            )
+        
+        elif self.config.scheduler_type == "cosine":
+            print(f"\n[Scheduler] Cosine annealing with warmup")
+            print(f"  Warmup epochs: {self.config.warmup_epochs}")
+            print(f"  Min LR: {self.config.min_lr}")
+            
+            def lr_lambda(epoch):
+                if epoch < self.config.warmup_epochs:
+                    return (epoch + 1) / self.config.warmup_epochs
+                progress = (epoch - self.config.warmup_epochs) / (self.config.num_epochs - self.config.warmup_epochs)
+                return 0.5 * (1 + math.cos(math.pi * progress))
+            
+            return torch.optim.lr_scheduler.LambdaLR(self.optimizer, lr_lambda)
+        
+        else:
+            raise ValueError(f"Unknown scheduler: {self.config.scheduler_type}")
+    
+    def print_model_info(self):
+        """Print model info."""
+        total_params = sum(p.numel() for p in self.model.parameters())
+        print(f"\nParameters: {total_params:,}")
+        print(f"Dataset: {self.config.dataset.upper()}")
+        print(f"Classes: {self.config.num_classes}")
+        print(f"Fusion mode: {self.config.fusion_mode}")
+        print(f"Optimizer: {self.config.optimizer_type.upper()}")
+        print(f"Scheduler: {self.config.scheduler_type}")
+        print(f"Output: {self.config.output_dir}")
+    
+    def train_epoch(self, train_loader: DataLoader, epoch: int) -> Tuple[float, float]:
+        """Train one epoch."""
+        self.model.train()
+        total_loss, correct, total = 0.0, 0, 0
+        
+        # Check if this is a restart epoch
+        is_restart = (epoch in self.restart_epochs)
+        epoch_desc = f"Epoch {epoch+1}/{self.config.num_epochs}"
+        if is_restart:
+            epoch_desc += " 🔄 RESTART"
+        
+        pbar = tqdm(train_loader, desc=f"{epoch_desc} [Train]")
+        
+        for batch_idx, (images, labels) in enumerate(pbar):
+            images, labels = images.to(self.device, non_blocking=True), labels.to(self.device, non_blocking=True)
+            
+            # Forward
+            if self.use_amp:
+                with autocast():
+                    logits = self.model(images)
+                    loss = self.criterion(logits, labels)
+                self.optimizer.zero_grad(set_to_none=True)
+                self.scaler.scale(loss).backward()
+                self.scaler.unscale_(self.optimizer)
+                torch.nn.utils.clip_grad_norm_(self.model.parameters(), self.config.grad_clip)
+                self.scaler.step(self.optimizer)
+                self.scaler.update()
+            else:
+                logits = self.model(images)
+                loss = self.criterion(logits, labels)
+                self.optimizer.zero_grad(set_to_none=True)
+                loss.backward()
+                torch.nn.utils.clip_grad_norm_(self.model.parameters(), self.config.grad_clip)
+                self.optimizer.step()
+            
+            # Metrics
+            total_loss += loss.item()
+            _, predicted = logits.max(1)
+            correct += predicted.eq(labels).sum().item()
+            total += labels.size(0)
+            
+            # TensorBoard logging
+            if batch_idx % self.config.log_interval == 0:
+                current_lr = self.scheduler.get_last_lr()[0]
+                self.writer.add_scalar('train/loss', loss.item(), self.global_step)
+                self.writer.add_scalar('train/accuracy', 100. * correct / total, self.global_step)
+                self.writer.add_scalar('train/learning_rate', current_lr, self.global_step)
+            
+            self.global_step += 1
+            
+            pbar.set_postfix({
+                'loss': f'{loss.item():.4f}',
+                'acc': f'{100. * correct / total:.2f}%',
+                'lr': f'{self.scheduler.get_last_lr()[0]:.6f}'
+            })
+        
+        return total_loss / len(train_loader), 100. * correct / total
+    
+    @torch.no_grad()
+    def evaluate(self, val_loader: DataLoader, epoch: int) -> Tuple[float, Dict]:
+        """Evaluate."""
+        self.model.eval()
+        total_loss, correct, total = 0.0, 0, 0
+        consciousness_values = []
+        
+        pbar = tqdm(val_loader, desc=f"Epoch {epoch+1}/{self.config.num_epochs} [Val]  ")
+        
+        for batch_idx, (images, labels) in enumerate(pbar):
+            images, labels = images.to(self.device, non_blocking=True), labels.to(self.device, non_blocking=True)
+            
+            # Forward with fusion info on last batch
+            return_info = (batch_idx == len(val_loader) - 1)
+            
+            if self.use_amp:
+                with autocast():
+                    if return_info:
+                        logits, fusion_infos = self.model(images, return_fusion_info=True)
+                        if fusion_infos and fusion_infos[0].get('consciousness') is not None:
+                            consciousness_values.append(fusion_infos[0]['consciousness'].mean().item())
+                    else:
+                        logits = self.model(images)
+                    loss = self.criterion(logits, labels)
+            else:
+                if return_info:
+                    logits, fusion_infos = self.model(images, return_fusion_info=True)
+                    if fusion_infos and fusion_infos[0].get('consciousness') is not None:
+                        consciousness_values.append(fusion_infos[0]['consciousness'].mean().item())
+                else:
+                    logits = self.model(images)
+                loss = self.criterion(logits, labels)
+            
+            total_loss += loss.item()
+            _, predicted = logits.max(1)
+            correct += predicted.eq(labels).sum().item()
+            total += labels.size(0)
+            
+            pbar.set_postfix({
+                'loss': f'{total_loss / (batch_idx + 1):.4f}',
+                'acc': f'{100. * correct / total:.2f}%'
+            })
+        
+        avg_loss = total_loss / len(val_loader)
+        accuracy = 100. * correct / total
+        
+        # TensorBoard logging
+        self.writer.add_scalar('val/loss', avg_loss, epoch)
+        self.writer.add_scalar('val/accuracy', accuracy, epoch)
+        if consciousness_values:
+            self.writer.add_scalar('val/consciousness', sum(consciousness_values) / len(consciousness_values), epoch)
+        
+        metrics = {
+            'loss': avg_loss,
+            'accuracy': accuracy,
+            'consciousness': sum(consciousness_values) / len(consciousness_values) if consciousness_values else None
+        }
+        
+        return accuracy, metrics
+    
+    def train(self, train_loader: DataLoader, val_loader: DataLoader):
+        """Full training loop."""
+        print("\n" + "=" * 70)
+        print("Starting training with AdamW + Warm Restarts")
+        print(f"Optimizer: {self.config.optimizer_type.upper()}")
+        print(f"Scheduler: {self.config.scheduler_type}")
+        print(f"Restart period: {self.config.restart_period} epochs (T_0)")
+        print(f"Cycle multiplier: {self.config.restart_mult}x (T_mult)")
+        print(f"Total restarts: {len(self.restart_epochs)}")
+        print("=" * 70 + "\n")
+        
+        for epoch in range(self.config.num_epochs):
+            # Train
+            train_loss, train_acc = self.train_epoch(train_loader, epoch)
+            
+            # Evaluate
+            val_acc, val_metrics = self.evaluate(val_loader, epoch)
+            
+            # Update scheduler
+            self.scheduler.step()
+            
+            # Check if this is a restart epoch
+            is_restart = (epoch in self.restart_epochs)
+            next_lr = self.scheduler.get_last_lr()[0]
+            
+            # Print summary
+            print(f"\n{'='*70}")
+            print(f"Epoch [{epoch + 1}/{self.config.num_epochs}] Summary:")
+            print(f"  Train: Loss={train_loss:.4f}, Acc={train_acc:.2f}%")
+            print(f"  Val:   Loss={val_metrics['loss']:.4f}, Acc={val_acc:.2f}%")
+            if val_metrics['consciousness']:
+                print(f"  Consciousness: {val_metrics['consciousness']:.4f}")
+            
+            if is_restart:
+                print(f"  🔄 WARM RESTART! Next LR: {next_lr:.6f}")
+                print(f"     (Escaping local minimum, exploring new regions)")
+            else:
+                print(f"  Current LR: {next_lr:.6f}")
+            
+            # Checkpoint logic
+            is_best = val_acc > self.best_acc
+            should_save_regular = ((epoch + 1) % self.config.save_interval == 0)
+            should_upload_regular = ((epoch + 1) % self.config.checkpoint_upload_interval == 0)
+            
+            if is_best:
+                self.best_acc = val_acc
+                print(f"  ✓ New best model! Accuracy: {val_acc:.2f}%")
+                self.save_checkpoint(epoch, val_acc, prefix="best", upload=should_upload_regular)
+            
+            if should_save_regular:
+                self.save_checkpoint(epoch, val_acc, prefix=f"epoch_{epoch+1}", upload=should_upload_regular)
+            
+            print(f"  HF Uploads: {self.upload_count}")
+            print(f"{'='*70}\n")
+            
+            # Flush TensorBoard
+            if (epoch + 1) % 10 == 0:
+                self.writer.flush()
+        
+        # Training complete
+        training_time = (time.time() - self.start_time) / 3600
+        
+        print("\n" + "=" * 70)
+        print("Training Complete!")
+        print(f"Best Validation Accuracy: {self.best_acc:.2f}%")
+        print(f"Training Time: {training_time:.2f} hours")
+        print(f"Total Uploads: {self.upload_count}")
+        print(f"Warm Restarts: {len(self.restart_epochs)}")
+        print("=" * 70)
+        
+        # Upload to HuggingFace
+        if self.hf_uploader:
+            print("\n[HF] Uploading final best model...")
+            best_model_path = self.config.checkpoint_dir / "best_model.safetensors"
+            best_state_path = self.config.checkpoint_dir / "best_training_state.pt"
+            best_metadata_path = self.config.checkpoint_dir / "best_metadata.json"
+            config_path = self.config.output_dir / "config.yaml"
+            
+            if best_model_path.exists():
+                self.hf_uploader.upload_file(best_model_path, "checkpoints/best_model.safetensors")
+            if best_state_path.exists():
+                self.hf_uploader.upload_file(best_state_path, "checkpoints/best_training_state.pt")
+            if best_metadata_path.exists():
+                self.hf_uploader.upload_file(best_metadata_path, "checkpoints/best_metadata.json")
+            if config_path.exists():
+                self.hf_uploader.upload_file(config_path, "config.yaml")
+            
+            print("[HF] Final upload: TensorBoard logs...")
+            self.hf_uploader.upload_folder_contents(self.config.tensorboard_dir, "tensorboard")
+            
+            trainer_stats = {
+                'total_params': sum(p.numel() for p in self.model.parameters()),
+                'best_acc': self.best_acc,
+                'training_time': training_time,
+                'final_epoch': self.config.num_epochs,
+                'batch_size': self.config.batch_size,
+                'mixed_precision': self.use_amp
+            }
+            self.hf_uploader.create_model_card(trainer_stats)
+        
+        self.writer.close()
+    
+    def save_checkpoint(self, epoch: int, accuracy: float, prefix: str = "checkpoint", upload: bool = False):
+        """Save checkpoint as safetensors with selective upload."""
+        checkpoint_dir = self.config.checkpoint_dir
+        checkpoint_dir.mkdir(parents=True, exist_ok=True)
+        
+        # 1. Save model weights as safetensors
+        model_path = checkpoint_dir / f"{prefix}_model.safetensors"
+        save_file(self.model.state_dict(), str(model_path))
+        
+        # 2. Save optimizer/scheduler state
+        training_state = {
+            'optimizer_state_dict': self.optimizer.state_dict(),
+            'scheduler_state_dict': self.scheduler.state_dict(),
+        }
+        if self.scaler is not None:
+            training_state['scaler_state_dict'] = self.scaler.state_dict()
+        
+        training_state_path = checkpoint_dir / f"{prefix}_training_state.pt"
+        torch.save(training_state, training_state_path)
+        
+        # 3. Save metadata
+        metadata = {
+            'epoch': epoch,
+            'accuracy': accuracy,
+            'best_accuracy': self.best_acc,
+            'global_step': self.global_step,
+            'timestamp': time.strftime("%Y-%m-%d %H:%M:%S"),
+            'optimizer': self.config.optimizer_type,
+            'scheduler': self.config.scheduler_type,
+            'learning_rate': self.scheduler.get_last_lr()[0]
+        }
+        metadata_path = checkpoint_dir / f"{prefix}_metadata.json"
+        with open(metadata_path, 'w') as f:
+            json.dump(metadata, f, indent=2)
+        
+        is_best = (prefix == "best")
+        
+        if is_best:
+            print(f"  💾 Saved best: {prefix}_model.safetensors")
+        else:
+            print(f"  💾 Saved: {prefix}_model.safetensors", end="")
+        
+        # Upload to HuggingFace
+        if self.hf_uploader and upload:
+            self.hf_uploader.upload_file(model_path, f"checkpoints/{prefix}_model.safetensors")
+            self.hf_uploader.upload_file(training_state_path, f"checkpoints/{prefix}_training_state.pt")
+            self.hf_uploader.upload_file(metadata_path, f"checkpoints/{prefix}_metadata.json")
+            
+            if is_best:
+                config_path = self.config.output_dir / "config.yaml"
+                if config_path.exists():
+                    self.hf_uploader.upload_file(config_path, "config.yaml")
+            
+            self.upload_count += 1
+            
+            if not is_best:
+                print(" → Uploaded to HF")
+        else:
+            if not is_best:
+                print(" (local only)")
+
+
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+# Data Loading (with Cutout)
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+class Cutout:
+    """Cutout data augmentation."""
+    def __init__(self, length: int):
+        self.length = length
+    
+    def __call__(self, img):
+        h, w = img.size(1), img.size(2)
+        mask = torch.ones((h, w), dtype=torch.float32)
+        y = torch.randint(h, (1,)).item()
+        x = torch.randint(w, (1,)).item()
+        
+        y1 = max(0, y - self.length // 2)
+        y2 = min(h, y + self.length // 2)
+        x1 = max(0, x - self.length // 2)
+        x2 = min(w, x + self.length // 2)
+        
+        mask[y1:y2, x1:x2] = 0.
+        mask = mask.expand_as(img)
+        return img * mask
+
+
+def get_data_loaders(config: CantorTrainingConfig) -> Tuple[DataLoader, DataLoader]:
+    """Create data loaders."""
+    
+    # Normalization
+    mean = (0.4914, 0.4822, 0.4465)
+    std = (0.2470, 0.2435, 0.2616)
+    
+    # Augmentation
+    if config.use_augmentation:
+        transforms_list = []
+        
+        if config.use_autoaugment:
+            policy = transforms.AutoAugmentPolicy.CIFAR10
+            transforms_list.append(transforms.AutoAugment(policy))
+        else:
+            transforms_list.extend([
+                transforms.RandomCrop(32, padding=4),
+                transforms.RandomHorizontalFlip(),
+            ])
+        
+        transforms_list.append(transforms.ToTensor())
+        transforms_list.append(transforms.Normalize(mean, std))
+        
+        if config.use_cutout:
+            transforms_list.append(Cutout(config.cutout_length))
+        
+        train_transform = transforms.Compose(transforms_list)
+    else:
+        train_transform = transforms.Compose([
+            transforms.ToTensor(),
+            transforms.Normalize(mean, std)
+        ])
+    
+    val_transform = transforms.Compose([
+        transforms.ToTensor(),
+        transforms.Normalize(mean, std)
+    ])
+    
+    # Dataset selection
+    if config.dataset == "cifar10":
+        train_dataset = datasets.CIFAR10(root='./data', train=True, download=True, transform=train_transform)
+        val_dataset = datasets.CIFAR10(root='./data', train=False, download=True, transform=val_transform)
+    elif config.dataset == "cifar100":
+        train_dataset = datasets.CIFAR100(root='./data', train=True, download=True, transform=train_transform)
+        val_dataset = datasets.CIFAR100(root='./data', train=False, download=True, transform=val_transform)
+    else:
+        raise ValueError(f"Unknown dataset: {config.dataset}")
+    
+    train_loader = DataLoader(
+        train_dataset,
+        batch_size=config.batch_size,
+        shuffle=True,
+        num_workers=config.num_workers,
+        pin_memory=(config.device == "cuda")
+    )
+    
+    val_loader = DataLoader(
+        val_dataset,
+        batch_size=config.batch_size,
+        shuffle=False,
+        num_workers=config.num_workers,
+        pin_memory=(config.device == "cuda")
+    )
+    
+    return train_loader, val_loader
+
+
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+# Main - AdamW + CosineAnnealingWarmRestarts
+# ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+def main():
+    """Main training function with AdamW + Warm Restarts."""
+    
+    # ═══════════════════════════════════════════════════════════════════
+    # Configuration - AdamW with Cosine Annealing Warm Restarts (SGDR)
+    # ═══════════════════════════════════════════════════════════════════
+    
+    config = CantorTrainingConfig(
+        # Dataset
+        dataset="cifar100",  # "cifar10" or "cifar100"
+        
+        # Architecture
+        embed_dim=512,
+        num_fusion_blocks=6,
+        num_heads=8,
+        fusion_mode="weighted",  # "weighted" or "consciousness"
+        k_simplex=4,
+        use_beatrix=True,
+        
+        # Optimizer: AdamW (best for ViTs)
+        optimizer_type="adamw",
+        learning_rate=3e-4,  # Standard ViT learning rate
+        weight_decay=0.05,   # Standard ViT weight decay
+        adamw_betas=(0.9, 0.999),
+        
+        # Scheduler: Cosine Annealing with Warm Restarts (SGDR)
+        scheduler_type="cosine_restarts",  # THE KEY!
+        restart_period=20,   # T_0: First restart at epoch 50
+        restart_mult=2,      # T_mult: Each cycle 2x longer
+        min_lr=1e-7,         # Minimum LR at end of each cycle
+        
+        # Training
+        num_epochs=300,      # Longer training with multiple cycles
+        batch_size=128,
+        grad_clip=1.0,
+        label_smoothing=0.1,
+        
+        # Augmentation
+        use_augmentation=True,
+        use_autoaugment=True,
+        use_cutout=False,
+        cutout_length=16,
+        
+        # Regularization
+        dropout=0.1,
+        drop_path_rate=0.1,
+        
+        # System
+        device="cuda",
+        use_mixed_precision=False,
+        
+        # HuggingFace
+        hf_username="AbstractPhil",
+        upload_to_hf=True,
+        checkpoint_upload_interval=25,  # Upload every 25 epochs
+    )
+    
+    print("=" * 70)
+    print(f"Cantor Fusion Classifier - {config.dataset.upper()}")
+    print("Training Strategy: AdamW + Cosine Annealing Warm Restarts (SGDR)")
+    print("=" * 70)
+    print(f"\nConfiguration:")
+    print(f"  Dataset: {config.dataset}")
+    print(f"  Fusion mode: {config.fusion_mode}")
+    print(f"  Optimizer: AdamW")
+    print(f"  Scheduler: CosineAnnealingWarmRestarts")
+    print(f"  Initial LR: {config.learning_rate}")
+    print(f"  Min LR: {config.min_lr}")
+    print(f"  Restart period (T_0): {config.restart_period} epochs")
+    print(f"  Cycle multiplier (T_mult): {config.restart_mult}x")
+    print(f"  Total epochs: {config.num_epochs}")
+    
+    # Calculate restart schedule
+    restarts = []
+    current = config.restart_period
+    period = config.restart_period
+    while current < config.num_epochs:
+        restarts.append(current)
+        period *= config.restart_mult
+        current += period
+    
+    print(f"\n  Restart schedule ({len(restarts)} restarts):")
+    for i, epoch in enumerate(restarts[:5]):
+        print(f"    Restart #{i+1}: Epoch {epoch}")
+    if len(restarts) > 5:
+        print(f"    ... and {len(restarts) - 5} more")
+    
+    print(f"\n  Output: {config.output_dir}")
+    print(f"  HuggingFace: {'Enabled' if config.upload_to_hf else 'Disabled'}")
+    if config.upload_to_hf:
+        print(f"  Repo: {config.hf_username}/{config.hf_repo_name}")
+        print(f"  Run: {config.run_name}")
+    
+    print("\n" + "=" * 70)
+    print("Expected Training Behavior:")
+    print("=" * 70)
+    print("📉 Cycle 1 (epochs 0-50):")
+    print("   LR: 3e-4 → 1e-7 (smooth drop)")
+    print("   Expected: Convergence to local minimum")
+    print("")
+    print("🔄 Epoch 50: RESTART!")
+    print("   LR: 1e-7 → 3e-4 (jump back up)")
+    print("   Expected: Escape local minimum, explore new regions")
+    print("")
+    print("📉 Cycle 2 (epochs 50-150):")
+    print("   LR: 3e-4 → 1e-7 (longer cycle, deeper convergence)")
+    print("")
+    print("🔄 Epoch 150: RESTART!")
+    print("   LR: 1e-7 → 3e-4")
+    print("")
+    print("📉 Cycle 3 (epochs 150-350+):")
+    print("   LR: 3e-4 → 1e-7 (longest cycle, final polish)")
+    print("")
+    print("🎯 Benefits:")
+    print("   - Multiple exploration cycles find better minima")
+    print("   - Automatic drop + restart (no manual tuning)")
+    print("   - Robust to different datasets/architectures")
+    print("=" * 70)
+    
+    # Load data
+    print("\nLoading data...")
+    train_loader, val_loader = get_data_loaders(config)
+    print(f"  Train: {len(train_loader.dataset)} samples")
+    print(f"  Val: {len(val_loader.dataset)} samples")
+    
+    # Train
+    trainer = Trainer(config)
+    trainer.train(train_loader, val_loader)
+    
+    print("\n" + "=" * 70)
+    print("🎯 Training complete!")
+    print("   Check TensorBoard to see the warm restart cycles!")
+    print(f"   tensorboard --logdir {config.tensorboard_dir}")
+    print("")
+    print("   Look for:")
+    print("   - Smooth LR drops during each cycle")
+    print("   - Sharp LR jumps at restart epochs")
+    print("   - Accuracy improvements across cycles")
+    print("=" * 70)
+
+
+if __name__ == "__main__":
+    main()