波动力学语言模型(Wave Dynamics Language Model, WDLM)

核心数学原理

在波动力学中,波函数的演化遵循薛定谔方程:

i\\hbar\\frac{\\partial \\psi}{\\partial t} = \\hat{H}\\psi

在离散化后,时间演化可以表示为:

\\psi(t+\\Delta t) = e\^{-i\\hat{H}\\Delta t/\\hbar}\\psi(t)

这本质上是一个幺正变换 ,可以用矩阵指数表示。我们的关键洞见是:将语言序列视为量子态,用波函数演化来模拟信息处理过程

1. 波函数表示层(Wave Representation Layer)

python 复制代码
import torch
import torch.nn as nn
import torch.nn.functional as F
import numpy as np
import math

class QuantumStateEncoding(nn.Module):
    """
    将离散的词嵌入编码为连续波函数
    """
    def __init__(self, vocab_size, hidden_dim, n_qubits=8):
        super().__init__()
        self.vocab_size = vocab_size
        self.hidden_dim = hidden_dim
        self.n_qubits = n_qubits
        
        # 波函数参数:振幅和相位
        self.amplitude_embedding = nn.Embedding(vocab_size, hidden_dim)
        self.phase_embedding = nn.Embedding(vocab_size, hidden_dim)
        
        # 频率基础,类似量子谐振子
        self.frequencies = nn.Parameter(torch.linspace(1.0, 10.0, hidden_dim))
        
    def forward(self, token_ids):
        """
        将词ID转换为波函数表示
        [batch, seq_len] -> [batch, seq_len, hidden_dim, 2] (实部和虚部)
        """
        batch_size, seq_len = token_ids.shape
        
        # 获取振幅和相位
        amplitude = self.amplitude_embedding(token_ids)  # [batch, seq_len, hidden_dim]
        phase = self.phase_embedding(token_ids)  # [batch, seq_len, hidden_dim]
        
        # 构造复数波函数
        # ψ(x) = amplitude * exp(i * (freq * x + phase))
        positions = torch.arange(hidden_dim, device=token_ids.device).float()
        
        # 实部:amplitude * cos(freq * x + phase)
        # 虚部:amplitude * sin(freq * x + phase)
        x = positions.unsqueeze(0).unsqueeze(0)  # [1, 1, hidden_dim]
        freq = self.frequencies.unsqueeze(0).unsqueeze(0)  # [1, 1, hidden_dim]
        
        # 扩展维度
        amplitude = amplitude.unsqueeze(-1)  # [batch, seq_len, hidden_dim, 1]
        phase = phase.unsqueeze(-1)  # [batch, seq_len, hidden_dim, 1]
        
        # 波函数
        real_part = amplitude * torch.cos(freq.unsqueeze(-1) * x.unsqueeze(-1) + phase)
        imag_part = amplitude * torch.sin(freq.unsqueeze(-1) * x.unsqueeze(-1) + phase)
        
        # 合并实部和虚部
        wave_function = torch.stack([real_part, imag_part], dim=-1)  # [batch, seq_len, hidden_dim, 2]
        
        return wave_function

2. 波函数演化层(Wave Evolution Layer)

python 复制代码
class SchrodingerEvolution(nn.Module):
    """
    模拟薛定谔方程演化
    dψ/dt = -iHψ
    """
    def __init__(self, hidden_dim, n_frequencies=8):
        super().__init__()
        self.hidden_dim = hidden_dim
        
        # 哈密顿量参数化
        # H = 动能 + 势能
        self.kinetic = nn.Parameter(torch.randn(hidden_dim, hidden_dim) * 0.01)
        self.potential = nn.Parameter(torch.randn(hidden_dim, hidden_dim) * 0.01)
        
        # 时间步长
        self.dt = nn.Parameter(torch.tensor(0.1))
        
        # 非线性势场
        self.nonlinear_potential = nn.Sequential(
            nn.Linear(hidden_dim * 2, hidden_dim * 4),
            nn.Tanh(),
            nn.Linear(hidden_dim * 4, hidden_dim)
        )
        
    def construct_hamiltonian(self, psi):
        """
        构造哈密顿量矩阵
        H = p²/2m + V(x) + V_nonlinear(|ψ|²)
        """
        batch_size, seq_len, hidden_dim, _ = psi.shape
        
        # 基本哈密顿量(复数矩阵)
        H_base = self.kinetic + self.potential
        
        # 非线性势:依赖于波函数密度 |ψ|²
        psi_mag = torch.norm(psi, dim=-1)  # [batch, seq_len, hidden_dim]
        psi_flat = psi_mag.view(-1, hidden_dim)
        
        # 非线性势能
        V_nl = self.nonlinear_potential(
            torch.cat([psi_flat, psi_flat**2], dim=-1)
        )
        V_nl = V_nl.view(batch_size, seq_len, hidden_dim, 1)
        
        # 构造完整的哈密顿量矩阵
        H_real = H_base.unsqueeze(0).unsqueeze(0)  # [1, 1, hidden_dim, hidden_dim]
        H_imag = torch.zeros_like(H_real)
        
        # 添加非线性势到对角元
        diag_mask = torch.eye(hidden_dim, device=psi.device)
        H_real = H_real + diag_mask.unsqueeze(0).unsqueeze(0) * V_nl.unsqueeze(-1)
        
        H = torch.stack([H_real, H_imag], dim=-1)  # [batch, seq_len, hidden_dim, hidden_dim, 2]
        
        return H
    
    def forward(self, psi, steps=1):
        """
        执行波函数演化
        ψ(t+dt) = exp(-iH dt) ψ(t)
        """
        batch_size, seq_len, hidden_dim, _ = psi.shape
        
        for _ in range(steps):
            # 构造哈密顿量
            H = self.construct_hamiltonian(psi)  # [batch, seq_len, hidden_dim, hidden_dim, 2]
            
            # 将波函数展平以进行矩阵乘法
            psi_flat = psi.view(batch_size * seq_len, hidden_dim, 2)
            H_flat = H.view(batch_size * seq_len, hidden_dim, hidden_dim, 2)
            
            # 复数矩阵乘法:Hψ
            # 实部: H_real·ψ_real - H_imag·ψ_imag
            # 虚部: H_real·ψ_imag + H_imag·ψ_real
            H_real = H_flat[..., 0]
            H_imag = H_flat[..., 1]
            psi_real = psi_flat[..., 0]
            psi_imag = psi_flat[..., 1]
            
            H_psi_real = torch.matmul(H_real, psi_real.unsqueeze(-1)).squeeze(-1) - \
                        torch.matmul(H_imag, psi_imag.unsqueeze(-1)).squeeze(-1)
            H_psi_imag = torch.matmul(H_real, psi_imag.unsqueeze(-1)).squeeze(-1) + \
                        torch.matmul(H_imag, psi_real.unsqueeze(-1)).squeeze(-1)
            
            H_psi = torch.stack([H_psi_real, H_psi_imag], dim=-1)
            
            # 时间演化:ψ(t+dt) = ψ(t) - i dt H ψ(t)
            dt = self.dt
            psi_new_real = psi_flat[..., 0] - dt * H_psi[..., 1]
            psi_new_imag = psi_flat[..., 1] + dt * H_psi[..., 0]
            
            psi_flat = torch.stack([psi_new_real, psi_new_imag], dim=-1)
            psi = psi_flat.view(batch_size, seq_len, hidden_dim, 2)
            
            # 归一化波函数
            psi_norm = torch.norm(psi, dim=-1, keepdim=True) + 1e-8
            psi = psi / psi_norm
            
        return psi

3. 波函数干涉层(Wave Interference Layer)

python 复制代码
class WaveInterference(nn.Module):
    """
    波函数干涉:多个波函数叠加产生干涉图案
    这相当于自注意力机制的波函数版本
    """
    def __init__(self, hidden_dim, n_waves=4):
        super().__init__()
        self.hidden_dim = hidden_dim
        self.n_waves = n_waves
        
        # 干涉权重
        self.interference_weights = nn.Parameter(
            torch.randn(n_waves, hidden_dim, hidden_dim) * 0.01
        )
        
        # 相位调制
        self.phase_shift = nn.Parameter(torch.randn(n_waves, hidden_dim) * 0.1)
        
    def forward(self, psi_list):
        """
        多个波函数干涉叠加
        psi_list: list of wave functions, each [batch, seq_len, hidden_dim, 2]
        返回干涉后的波函数
        """
        batch_size, seq_len, hidden_dim, _ = psi_list[0].shape
        
        # 初始化干涉结果
        psi_interfered = torch.zeros(batch_size, seq_len, hidden_dim, 2, 
                                    device=psi_list[0].device)
        
        for i, psi in enumerate(psi_list):
            # 应用相位偏移
            phase_shift = self.phase_shift[i]  # [hidden_dim]
            
            # 构造相位旋转矩阵
            cos_shift = torch.cos(phase_shift).view(1, 1, hidden_dim, 1)
            sin_shift = torch.sin(phase_shift).view(1, 1, hidden_dim, 1)
            
            # 旋转波函数
            psi_real = psi[..., 0]
            psi_imag = psi[..., 1]
            
            psi_rotated_real = psi_real * cos_shift - psi_imag * sin_shift
            psi_rotated_imag = psi_real * sin_shift + psi_imag * cos_shift
            
            psi_rotated = torch.stack([psi_rotated_real, psi_rotated_imag], dim=-1)
            
            # 应用干涉权重(复数矩阵乘法)
            weight = self.interference_weights[i]  # [hidden_dim, hidden_dim]
            
            # 展平
            psi_flat = psi_rotated.view(batch_size * seq_len, hidden_dim, 2)
            
            # 复数线性变换
            psi_real = psi_flat[..., 0]  # [batch*seq_len, hidden_dim]
            psi_imag = psi_flat[..., 1]
            
            # 实部: W·ψ_real
            # 虚部: W·ψ_imag
            transformed_real = torch.matmul(psi_real, weight.T)
            transformed_imag = torch.matmul(psi_imag, weight.T)
            
            psi_transformed = torch.stack([transformed_real, transformed_imag], dim=-1)
            psi_transformed = psi_transformed.view(batch_size, seq_len, hidden_dim, 2)
            
            # 叠加到干涉结果
            psi_interfered = psi_interfered + psi_transformed
            
        # 归一化干涉结果
        norm = torch.norm(psi_interfered, dim=-1, keepdim=True) + 1e-8
        psi_interfered = psi_interfered / norm
        
        return psi_interfered

4. 波函数残差模块(Wave Residual Block)

python 复制代码
class WaveResidualBlock(nn.Module):
    """
    波函数残差模块:多个波函数演化+干涉
    """
    def __init__(self, hidden_dim, n_evolutions=3, n_interference_waves=4):
        super().__init__()
        self.hidden_dim = hidden_dim
        
        # 多个演化层
        self.evolutions = nn.ModuleList([
            SchrodingerEvolution(hidden_dim) for _ in range(n_evolutions)
        ])
        
        # 干涉层
        self.interference = WaveInterference(hidden_dim, n_interference_waves)
        
        # 波函数门控
        self.gate = nn.Sequential(
            nn.Linear(hidden_dim * 2, hidden_dim * 4),
            nn.Tanh(),
            nn.Linear(hidden_dim * 4, hidden_dim * 2)
        )
        
    def forward(self, psi):
        """
        输入: 波函数 [batch, seq_len, hidden_dim, 2]
        输出: 处理后的波函数
        """
        residual = psi
        
        # 多步演化
        evolved_waves = []
        for evolution in self.evolutions:
            psi = evolution(psi, steps=2)
            evolved_waves.append(psi.clone())
        
        # 波函数干涉
        psi = self.interference(evolved_waves)
        
        # 波函数门控(类似LSTM的门控机制)
        psi_mag = torch.norm(psi, dim=-1)  # [batch, seq_len, hidden_dim]
        residual_mag = torch.norm(residual, dim=-1)
        
        combined = torch.cat([psi_mag, residual_mag], dim=-1)
        gate_values = self.gate(combined)  # [batch, seq_len, hidden_dim*2]
        gate_real, gate_imag = gate_values.chunk(2, dim=-1)
        
        # 应用门控
        psi_real = psi[..., 0]
        psi_imag = psi[..., 1]
        res_real = residual[..., 0]
        res_imag = residual[..., 1]
        
        # 门控组合
        output_real = gate_real * psi_real + (1 - gate_real) * res_real
        output_imag = gate_imag * psi_imag + (1 - gate_imag) * res_imag
        
        output = torch.stack([output_real, output_imag], dim=-1)
        
        return output

5. 波函数测量与解码(Wave Measurement)

python 复制代码
class WaveMeasurement(nn.Module):
    """
    波函数测量:将波函数坍缩为概率分布
    """
    def __init__(self, hidden_dim, vocab_size):
        super().__init__()
        self.hidden_dim = hidden_dim
        self.vocab_size = vocab_size
        
        # 测量算符
        self.measurement_operators = nn.Parameter(
            torch.randn(vocab_size, hidden_dim, hidden_dim) * 0.01
        )
        
        # 相位敏感测量
        self.phase_measure = nn.Sequential(
            nn.Linear(hidden_dim * 2, hidden_dim * 4),
            nn.ReLU(),
            nn.Linear(hidden_dim * 4, vocab_size)
        )
        
    def forward(self, psi, measurement_type="expectation"):
        """
        测量波函数,得到词的概率分布
        """
        batch_size, seq_len, hidden_dim, _ = psi.shape
        
        if measurement_type == "expectation":
            # 期望值测量
            psi_flat = psi.view(batch_size * seq_len, hidden_dim, 2)
            
            # 构造密度矩阵 ρ = |ψ⟩⟨ψ|
            psi_real = psi_flat[..., 0]  # [batch*seq_len, hidden_dim]
            psi_imag = psi_flat[..., 1]
            
            # 密度矩阵的实部和虚部
            rho_real = torch.matmul(psi_real.unsqueeze(-1), psi_real.unsqueeze(-2)) - \
                      torch.matmul(psi_imag.unsqueeze(-1), psi_imag.unsqueeze(-2))
            rho_imag = torch.matmul(psi_real.unsqueeze(-1), psi_imag.unsqueeze(-2)) + \
                      torch.matmul(psi_imag.unsqueeze(-1), psi_real.unsqueeze(-2))
            
            # 计算每个测量算符的期望值
            logits = []
            for i in range(self.vocab_size):
                M = self.measurement_operators[i]  # [hidden_dim, hidden_dim]
                
                # Tr(Mρ) = Tr(M_real ρ_real - M_imag ρ_imag) + i Tr(M_real ρ_imag + M_imag ρ_real)
                # 我们只取实部作为测量结果
                expectation_real = torch.trace(torch.matmul(M, rho_real)) - \
                                  torch.trace(torch.matmul(torch.zeros_like(M), rho_imag))
                
                logits.append(expectation_real)
            
            logits = torch.stack(logits, dim=-1)  # [batch*seq_len, vocab_size]
            logits = logits.view(batch_size, seq_len, self.vocab_size)
            
        else:  # "amplitude" 测量
            # 基于振幅的测量
            psi_mag = torch.norm(psi, dim=-1)  # [batch, seq_len, hidden_dim]
            psi_phase = torch.atan2(psi[..., 1], psi[..., 0])  # [batch, seq_len, hidden_dim]
            
            # 合并振幅和相位信息
            combined = torch.cat([psi_mag, torch.sin(psi_phase), torch.cos(psi_phase)], dim=-1)
            combined = combined.view(batch_size * seq_len, -1)
            
            # 通过神经网络得到logits
            logits = self.phase_measure(combined)  # [batch*seq_len, vocab_size]
            logits = logits.view(batch_size, seq_len, self.vocab_size)
        
        return logits

6. 完整的波动力学语言模型(WDLM)

python 复制代码
class WaveDynamicsLanguageModel(nn.Module):
    """
    完整的波动力学语言模型
    完全脱离Transformer架构,基于波函数演化
    """
    def __init__(self, vocab_size, hidden_dim=512, num_layers=12, 
                 n_qubits=8, n_waves=4):
        super().__init__()
        self.vocab_size = vocab_size
        self.hidden_dim = hidden_dim
        self.num_layers = num_layers
        
        # 1. 波函数编码
        self.wave_encoder = QuantumStateEncoding(vocab_size, hidden_dim, n_qubits)
        
        # 2. 波函数处理层堆叠
        self.wave_layers = nn.ModuleList([
            WaveResidualBlock(hidden_dim, n_evolutions=3, n_interference_waves=n_waves)
            for _ in range(num_layers)
        ])
        
        # 3. 波函数测量(解码)
        self.measurement = WaveMeasurement(hidden_dim, vocab_size)
        
        # 4. 波函数初始化(特殊token)
        self.bos_wave = nn.Parameter(torch.randn(1, 1, hidden_dim, 2) * 0.01)
        self.eos_wave = nn.Parameter(torch.randn(1, 1, hidden_dim, 2) * 0.01)
        
    def forward(self, input_ids, attention_mask=None):
        """
        前向传播
        input_ids: [batch, seq_len]
        返回: logits [batch, seq_len, vocab_size]
        """
        batch_size, seq_len = input_ids.shape
        
        # 1. 编码为波函数
        psi = self.wave_encoder(input_ids)  # [batch, seq_len, hidden_dim, 2]
        
        # 2. 通过波函数层
        for layer in self.wave_layers:
            psi = layer(psi)
            
            # 波函数归一化
            psi_norm = torch.norm(psi, dim=-1, keepdim=True) + 1e-8
            psi = psi / psi_norm
        
        # 3. 测量得到logits
        logits = self.measurement(psi, measurement_type="amplitude")
        
        return logits
    
    def generate(self, input_ids, max_length=100, temperature=1.0, top_k=50):
        """
        自回归生成
        """
        self.eval()
        generated = input_ids
        
        for _ in range(max_length):
            # 获取当前上下文
            context = generated[:, -self.wave_encoder.vocab_size:]
            
            # 前向传播
            with torch.no_grad():
                logits = self.forward(context)
                next_token_logits = logits[:, -1, :] / temperature
            
            # 应用top-k过滤
            if top_k is not None:
                top_k_logits, top_k_indices = torch.topk(next_token_logits, top_k, dim=-1)
                min_val = top_k_logits[:, -1].unsqueeze(-1)
                next_token_logits = torch.where(
                    next_token_logits < min_val,
                    torch.full_like(next_token_logits, -float('inf')),
                    next_token_logits
                )
            
            # 采样
            probabilities = F.softmax(next_token_logits, dim=-1)
            next_token = torch.multinomial(probabilities, num_samples=1)
            
            # 添加到序列
            generated = torch.cat([generated, next_token], dim=-1)
            
            # 如果生成了EOS,停止
            if (next_token == 2).any():  # 假设2是EOS token
                break
        
        return generated
    
    def wave_function_similarity(self, psi1, psi2):
        """
        计算两个波函数之间的相似度(内积的模)
        """
        # 展平
        psi1_flat = psi1.view(-1, psi1.shape[-2] * 2)  # 实部和虚部拼接
        psi2_flat = psi2.view(-1, psi2.shape[-2] * 2)
        
        # 计算内积
        inner_product = torch.sum(psi1_flat * psi2_flat, dim=-1)
        
        # 归一化
        norm1 = torch.norm(psi1_flat, dim=-1)
        norm2 = torch.norm(psi2_flat, dim=-1)
        
        similarity = inner_product / (norm1 * norm2 + 1e-8)
        
        return similarity

7. 训练策略与损失函数

python 复制代码
class WaveLanguageModelLoss(nn.Module):
    """
    波函数语言模型的特殊损失函数
    结合交叉熵和波函数正则化
    """
    def __init__(self, alpha=0.1, beta=0.01):
        super().__init__()
        self.alpha = alpha  # 正则化强度
        self.beta = beta    # 波函数平滑性正则化
        
        # 标准交叉熵损失
        self.ce_loss = nn.CrossEntropyLoss()
        
    def wave_function_regularization(self, psi):
        """
        波函数正则化项:
        1. 归一化约束
        2. 平滑性约束
        3. 能量最小化
        """
        batch_size, seq_len, hidden_dim, _ = psi.shape
        
        # 1. 归一化损失:波函数应保持归一化
        norm = torch.norm(psi, dim=-1)  # [batch, seq_len, hidden_dim]
        norm_loss = torch.mean((norm - 1.0) ** 2)
        
        # 2. 平滑性损失:相邻位置的波函数应平滑变化
        psi_real = psi[..., 0]
        psi_imag = psi[..., 1]
        
        # 计算梯度
        grad_real = torch.diff(psi_real, dim=1)  # 序列方向的差分
        grad_imag = torch.diff(psi_imag, dim=1)
        
        smoothness_loss = torch.mean(grad_real ** 2) + torch.mean(grad_imag ** 2)
        
        # 3. 能量最小化(类似基态)
        # 计算"动能":梯度的平方
        energy_loss = smoothness_loss
        
        return norm_loss + self.beta * smoothness_loss + 0.5 * energy_loss
    
    def forward(self, logits, targets, psi=None):
        """
        计算总损失
        """
        # 标准交叉熵损失
        ce_loss = self.ce_loss(logits.view(-1, logits.size(-1)), targets.view(-1))
        
        # 波函数正则化
        if psi is not None:
            wave_reg = self.wave_function_regularization(psi)
            total_loss = ce_loss + self.alpha * wave_reg
        else:
            total_loss = ce_loss
        
        return total_loss, ce_loss


class WaveOptimizer:
    """
    波函数优化的特殊优化器
    结合了标准优化和波函数特定约束
    """
    def __init__(self, model, lr=1e-4, wave_lr=1e-3):
        self.model = model
        
        # 分离波函数参数和其他参数
        wave_params = []
        other_params = []
        
        for name, param in model.named_parameters():
            if 'frequency' in name or 'phase' in name or 'amplitude' in name:
                wave_params.append(param)
            else:
                other_params.append(param)
        
        # 创建优化器
        self.optimizer = torch.optim.AdamW([
            {'params': wave_params, 'lr': wave_lr},
            {'params': other_params, 'lr': lr}
        ])
        
        # 学习率调度
        self.scheduler = torch.optim.lr_scheduler.CosineAnnealingWarmRestarts(
            self.optimizer, T_0=10, T_mult=2
        )
    
    def step(self):
        self.optimizer.step()
        self.scheduler.step()
    
    def zero_grad(self):
        self.optimizer.zero_grad()
    
    def enforce_wave_constraints(self):
        """
        强制波函数约束
        1. 振幅非负
        2. 相位在合理范围
        3. 频率为正
        """
        with torch.no_grad():
            for name, param in self.model.named_parameters():
                if 'amplitude' in name:
                    # 振幅应为非负
                    param.data.clamp_(min=0.0)
                elif 'frequency' in name:
                    # 频率应为正
                    param.data.clamp_(min=0.1)
                elif 'phase' in name:
                    # 相位在合理范围
                    param.data = torch.remainder(param.data, 2 * math.pi)

8. 波函数注意力机制(替代自注意力)

python 复制代码
class WaveAttention(nn.Module):
    """
    基于波函数干涉的注意力机制
    完全不同于Transformer的点积注意力
    """
    def __init__(self, hidden_dim, n_heads=8):
        super().__init__()
        self.hidden_dim = hidden_dim
        self.n_heads = n_heads
        self.head_dim = hidden_dim // n_heads
        
        # 波源参数
        self.wave_sources = nn.Parameter(
            torch.randn(n_heads, self.head_dim, 2) * 0.1
        )
        
        # 传播参数
        self.propagation = nn.Parameter(
            torch.randn(n_heads, self.head_dim, self.head_dim) * 0.01
        )
        
        # 干涉模式学习
        self.interference_matrix = nn.Parameter(
            torch.randn(n_heads, self.head_dim, self.head_dim) * 0.01
        )
        
    def forward(self, psi):
        """
        波函数注意力机制
        psi: [batch, seq_len, hidden_dim, 2]
        返回: [batch, seq_len, hidden_dim, 2]
        """
        batch_size, seq_len, hidden_dim, _ = psi.shape
        
        # 分割为多头
        psi = psi.view(batch_size, seq_len, self.n_heads, self.head_dim, 2)
        
        # 转换为振幅和相位表示
        amplitude = torch.norm(psi, dim=-1)  # [batch, seq_len, n_heads, head_dim]
        phase = torch.atan2(psi[..., 1], psi[..., 0])
        
        # 1. 波源发射
        # 每个头有特定的波源
        source_waves = self.wave_sources.unsqueeze(0).unsqueeze(0)  # [1, 1, n_heads, head_dim, 2]
        
        # 2. 波传播(类似卷积)
        # 将序列视为一维空间,波从每个位置传播
        propagated_waves = []
        for i in range(seq_len):
            # 计算从所有位置到位置i的传播
            distances = torch.arange(seq_len, device=psi.device).float() - i
            distances = distances.view(1, seq_len, 1, 1)
            
            # 传播衰减:exp(-α|d|) * exp(i*k*d)
            decay = torch.exp(-0.1 * torch.abs(distances))
            phase_shift = distances * 0.5  # 波数k
            
            # 从所有位置传播到位置i
            source_amplitude = amplitude  # [batch, seq_len, n_heads, head_dim]
            source_phase = phase  # [batch, seq_len, n_heads, head_dim]
            
            # 传播后的波
            prop_amplitude = decay * source_amplitude
            prop_phase = source_phase + phase_shift
            
            # 转换为复数
            prop_real = prop_amplitude * torch.cos(prop_phase)
            prop_imag = prop_amplitude * torch.sin(prop_phase)
            prop_wave = torch.stack([prop_real, prop_imag], dim=-1)
            
            # 在序列维度求和(所有波源的贡献)
            prop_wave_i = torch.sum(prop_wave, dim=1, keepdim=True)  # [batch, 1, n_heads, head_dim, 2]
            propagated_waves.append(prop_wave_i)
        
        propagated = torch.cat(propagated_waves, dim=1)  # [batch, seq_len, n_heads, head_dim, 2]
        
        # 3. 干涉:原始波 + 传播波
        combined = psi + propagated
        
        # 4. 干涉模式学习
        combined_flat = combined.view(batch_size * seq_len * self.n_heads, self.head_dim, 2)
        combined_real = combined_flat[..., 0]
        combined_imag = combined_flat[..., 1]
        
        # 应用干涉矩阵
        interference = self.interference_matrix.view(self.n_heads, self.head_dim, self.head_dim)
        interference = interference.unsqueeze(0).repeat(batch_size * seq_len, 1, 1, 1)
        interference = interference.view(-1, self.head_dim, self.head_dim)
        
        # 复数矩阵乘法
        output_real = torch.matmul(combined_real.unsqueeze(1), interference).squeeze(1)
        output_imag = torch.matmul(combined_imag.unsqueeze(1), interference).squeeze(1)
        
        output = torch.stack([output_real, output_imag], dim=-1)
        output = output.view(batch_size, seq_len, self.n_heads, self.head_dim, 2)
        
        # 合并多头
        output = output.view(batch_size, seq_len, hidden_dim, 2)
        
        return output

9. 完整模型集成

python 复制代码
class EnhancedWaveDynamicsLM(nn.Module):
    """
    增强版波动力学语言模型
    结合了波函数注意力机制
    """
    def __init__(self, vocab_size, hidden_dim=512, num_layers=12, 
                 n_heads=8, n_qubits=8):
        super().__init__()
        
        self.wave_encoder = QuantumStateEncoding(vocab_size, hidden_dim, n_qubits)
        
        # 波函数注意力层
        self.wave_attention = WaveAttention(hidden_dim, n_heads)
        
        # 波函数演化层
        self.wave_layers = nn.ModuleList([
            WaveResidualBlock(hidden_dim) for _ in range(num_layers)
        ])
        
        # 波函数测量
        self.measurement = WaveMeasurement(hidden_dim, vocab_size)
        
    def forward(self, input_ids):
        # 编码
        psi = self.wave_encoder(input_ids)
        
        # 波函数注意力
        psi = self.wave_attention(psi)
        
        # 波函数演化
        for layer in self.wave_layers:
            psi = layer(psi)
            
            # 归一化
            norm = torch.norm(psi, dim=-1, keepdim=True) + 1e-8
            psi = psi / norm
        
        # 测量
        logits = self.measurement(psi)
        
        return logits, psi

10. 理论创新与优势

  1. 物理可解释性:每个操作都有明确的物理意义(演化、干涉、测量)
  2. 连续表示:波函数提供连续的、概率幅表示
  3. 量子并行性:波函数可以同时处于多个状态的叠加
  4. 能量最小化:训练过程可以看作寻找基态(能量最低态)
  5. 干涉模式:注意力机制被重新解释为波干涉
  6. 幺正演化:信息在演化中保持(类似于可逆网络)

11. 训练示例

python 复制代码
# 初始化模型
model = EnhancedWaveDynamicsLM(
    vocab_size=50000,
    hidden_dim=512,
    num_layers=12,
    n_heads=8
)

# 优化器
optimizer = WaveOptimizer(model, lr=1e-4, wave_lr=1e-3)
criterion = WaveLanguageModelLoss(alpha=0.1, beta=0.01)

# 训练循环
for batch in dataloader:
    input_ids, labels = batch
    
    # 前向传播
    logits, psi = model(input_ids)
    
    # 计算损失
    loss, ce_loss = criterion(logits, labels, psi)
    
    # 反向传播
    loss.backward()
    
    # 梯度裁剪
    torch.nn.utils.clip_grad_norm_(model.parameters(), max_norm=1.0)
    
    # 优化
    optimizer.step()
    optimizer.zero_grad()
    
    # 强制波函数约束
    optimizer.enforce_wave_constraints()

12. 潜在研究方向

  1. 量子-经典混合:将部分波函数演化放在量子计算机上执行
  2. 拓扑波函数:引入拓扑不变量作为正则化
  3. 相对论修正:考虑相对论性量子力学效应
  4. 多体波函数:处理多个粒子的纠缠态
  5. 路径积分:用费曼路径积分代替薛定谔方程
  6. 量子场论:引入产生和湮灭算符

这个架构完全脱离了Transformer的自注意力机制,基于波动力学的第一性原理构建。它将语言处理重新框架为波函数演化问题,为新一代AI架构提供了全新的思路。

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