import torch from transformers import AutoTokenizer, AutoModelForCausalLM import numpy as np # 1. Setup SmolLM2 Meta-Optimizer model_id = "HuggingFaceTB/SmolLM2-135M-Instruct" device = "cuda" if torch.cuda.is_available() else "cpu" print(f"Loading {model_id}...") tokenizer = AutoTokenizer.from_pretrained(model_id) llm_model = AutoModelForCausalLM.from_pretrained(model_id).to(device) # --- THE SECRET MAP (Completely hidden from the SLM) --- anonymous_menu = { "A": {"label": "Strategy ALPHA", "func": "relu"}, "B": {"label": "Strategy BETA", "func": "leaky_relu"}, "C": {"label": "Strategy GAMMA", "func": "sigmoid"}, "D": {"label": "Strategy DELTA", "func": "tanh"} } token_map = {letter: tokenizer.convert_tokens_to_ids(letter) for letter in anonymous_menu.keys()} token_ids = list(token_map.values()) id_to_letter = {v: k for k, v in token_map.items()} # Generate mock training data np.random.seed(42) from scipy.io.wavfile import read # Load training and test data X_train = read('../X_train.wav')[1].reshape(-1, 784) y_train = (read('../y_train.wav')[1] * 9).astype(int) X_test = read('../X_test.wav')[1].reshape(-1, 784) y_test = (read('../y_test.wav')[1] * 9).astype(int) X20 = X_test[:1000] yt20 = y_test[:1000] # --- Keeping the DynamicMLP logic the exact same --- class DynamicMLP: def __init__(self, input_size, hidden_size, output_size, learning_rate=0.1): self.W1 = np.random.randn(input_size, hidden_size) * 0.01 self.b1 = np.zeros((1, hidden_size)) self.W2 = np.random.randn(hidden_size, output_size) * 0.01 self.b2 = np.zeros((1, output_size)) self.learning_rate = learning_rate self.current_activation = "tanh" def activate(self, x): if self.current_activation == "relu": return np.maximum(0, x) elif self.current_activation == "leaky_relu": return np.where(x > 0, x, x * 0.01) elif self.current_activation == "sigmoid": return 1 / (1 + np.exp(-np.clip(x, -50, 50))) elif self.current_activation == "tanh": return np.tanh(x) def activate_derivative(self, x, act_output): if self.current_activation == "relu": return np.where(x > 0, 1, 0) elif self.current_activation == "leaky_relu": return np.where(x > 0, 1, 0.01) elif self.current_activation == "sigmoid": return act_output * (1 - act_output) elif self.current_activation == "tanh": return 1 - act_output ** 2 def softmax(self, x): exp_x = np.exp(x - np.max(x, axis=1, keepdims=True)) return exp_x / np.sum(exp_x, axis=1, keepdims=True) def forward(self, X): self.z1 = np.dot(X, self.W1) + self.b1 self.a1 = self.activate(self.z1) self.z2 = np.dot(self.a1, self.W2) + self.b2 return self.softmax(self.z2) def update(self, X, y_true): m = y_true.shape[0] y_pred = self.forward(X) dz2 = y_pred - y_true dW2 = np.dot(self.a1.T, dz2) / m db2 = np.sum(dz2, axis=0, keepdims=True) / m da1 = np.dot(dz2, self.W2.T) dz1 = da1 * self.activate_derivative(self.z1, self.a1) dW1 = np.dot(X.T, dz1) / m db1 = np.sum(dz1, axis=0, keepdims=True) / m self.W1 -= self.learning_rate * dW1 self.b1 -= self.learning_rate * db1 self.W2 -= self.learning_rate * dW2 self.b2 -= self.learning_rate * db2 def score(self, X, y_true): preds = np.argmax(self.forward(X), axis=1) return np.mean(preds == y_true) if __name__ == "__main__": mlp = DynamicMLP(input_size=784, hidden_size=100, output_size=10, learning_rate=0.1) performance_log = {key: [] for key in anonymous_menu.keys()} N = 10 for _ in range(100): idx = np.random.randint(0, 60000, 100) X = X_train[idx] yt = y_train[idx] print(_, mlp.score(X,yt)) mlp.update(X, np.eye(10)[yt]) print(f"Starting ANONYMOUS data-window optimization (N = {N})...") for epoch in range(1, 4): print(f"\n================ META CYCLE {epoch} ================") # --- PHASE 1: ANONYMOUS EXPLORATION --- print("Evaluating hidden mathematical performance...") for letter, config in anonymous_menu.items(): mlp.current_activation = config["func"] start_acc = mlp.score(X_train[:500], y_train[:500]) for _ in range(N): idx = np.random.randint(0, 5000, 64) mlp.update(X_train[idx], np.eye(10)[y_train[idx]]) end_acc = mlp.score(X_train[:500], y_train[:500]) delta_acc = end_acc - start_acc performance_log[letter].append(delta_acc) print(f" -> Tested {config['label']}: Accuracy Metric Performance = {delta_acc:+.4f}") # --- PHASE 2: ANONYMOUS EXPLOITATION --- # The prompt contains absolutely ZERO clues about what the functions actually are prompt = ( f"<|im_start|>system\n" f"You are a pure numerical analysis engine tracking statistical trajectories.\n" f"Analyze the performance changes from the last matrix processing window:\n" f"- Strategy ALPHA performance score: {performance_log['A'][-1]:+.4f}\n" f"- Strategy BETA performance score: {performance_log['B'][-1]:+.4f}\n" f"- Strategy GAMMA performance score: {performance_log['C'][-1]:+.4f}\n" f"- Strategy DELTA performance score: {performance_log['D'][-1]:+.4f}\n\n" f"Select the single character token option linked to the highest positive numerical score value:\n" f"A = Strategy ALPHA\n" f"B = Strategy BETA\n" f"C = Strategy GAMMA\n" f"D = Strategy DELTA\n" f"Which option letter is optimal? Output letter:<|im_end|>\n" f"<|im_start|>assistant\n" ) inputs = tokenizer(prompt, return_tensors="pt").to(device) with torch.no_grad(): outputs = llm_model(**inputs) logits = outputs.logits[0, -1, :] selection_logits = logits[token_ids] probs = torch.softmax(selection_logits, dim=-1).float().cpu().numpy() chosen_token = token_ids[np.argmax(probs)] chosen_letter = id_to_letter[chosen_token] # Behind the scenes, map their anonymous token choice back to real math selected_strategy = anonymous_menu[chosen_letter] mlp.current_activation = selected_strategy["func"] print(f"\n[Meta-Decision Logits]: A(ALPHA): {probs[0]:.2f} | B(BETA): {probs[1]:.2f} | C(GAMMA): {probs[2]:.2f} | D(DELTA): {probs[3]:.2f}") print(f"✨ SmolLM2 selected code {chosen_letter} ({selected_strategy['label']}).") print(f" [System Execution mapping]: Operating on mathematical backend '{selected_strategy['func'].upper()}'")