FORESEE / models /causal_model.py
tjtrans's picture
Add FORESEE datasets, checkpoints, and replication code
aa0c0b8 verified
Raw History Blame Contribute Delete
9.17 kB
import torch
from torch import nn
from torch.nn import functional as F
import math
class CausalModel(nn.Module):
def __init__(self, st_net, config,adj_mx):
'''
st-net:(batch_size, input_window, num_nodes, feature_dim_in) ->(batch_size, output_window, num_nodes, feature_dim_out)
'''
super(CausalModel, self).__init__()
self.config=config.copy()
self.st_net = st_net(self.config,adj_mx)
self.pred_head2=nn.Linear(config['d_model'],2)
# self.train_month_num=config['train_months']
self.device=config['device']
self.config=config
def forward(self, x):
'''
x:(batch_size, input_window, num_nodes, feature_dim_in)
'''
x=self.st_net(x)
x=self.pred_head2(x) #(batch_size, output_window, num_nodes, feature_dim)
return x
def get_pred_and_feature(self,x):
feature=self.st_net(x)
x=self.pred_head2(feature)
return x,feature
class CausalModel_lp(nn.Module):
def __init__(self, st_net, config, adj_mx):
'''
st-net: (batch_size, input_window, num_nodes, feature_dim_in)
-> (batch_size, output_window, num_nodes, feature_dim_out)
'''
super(CausalModel_lp, self).__init__()
self.config = config.copy()
self.st_net = st_net(self.config, adj_mx)
# 输出头,预测 μ 和 log(b) 两个参数
self.pred_head_mu = nn.Linear(16, 1) # 输出位置参数 μ
self.pred_head_log_b = nn.Linear(16, 1) # 输出 log(尺度参数 b)
self.train_month_num = config['train_months']
self.device = config['device']
def forward(self, x):
'''
x: (batch_size, input_window, num_nodes, feature_dim_in)
'''
x = self.st_net(x)
# 预测 μ 和 log(b)
mu = self.pred_head_mu(x) # (batch_size, output_window, num_nodes, 1)
log_b = self.pred_head_log_b(x) # (batch_size, output_window, num_nodes, 1)
b = torch.exp(log_b) # 将 log(b) 转换为 b,确保 b > 0
return mu, b
class CausalModel_quantile_regress(nn.Module):
def __init__(self, st_net, config, adj_mx):
'''
st_net: (batch_size, input_window, num_nodes, feature_dim_in) -> (batch_size, output_window, num_nodes, feature_dim_out)
'''
super(CausalModel_quantile_regress, self).__init__()
self.config = config.copy()
self.st_net = st_net(self.config, adj_mx)
self.pred_head2 = nn.Linear(16, 2) # 原点预测值
self.pred_head_quantiles_up = nn.Linear(16, 2) # 用于输出分位数
self.pred_head_quantiles_low = nn.Linear(16, 2) # 用于输出分位数
self.train_month_num = config['train_months']
self.device = config['device']
self.config = config
def forward(self, x):
'''
x: (batch_size, input_window, num_nodes, feature_dim_in)
'''
# 通过空间时间网络
x = self.st_net(x)
# 点预测
point_predictions = self.pred_head2(x) # (batch_size, output_window, num_nodes, feature_dim)
# 计算分位数预测
quantile_predictions_up = self.pred_head_quantiles_up(x) # 计算分位数预测
quantile_predictions_low = self.pred_head_quantiles_low(x) # 计算分位数预测
return point_predictions, quantile_predictions_low,quantile_predictions_up
def get_pred_and_feature(self,x):
feature=self.st_net(x)
x=self.pred_head(feature)
return x,feature
class CausalModel_var(nn.Module):
def __init__(self, st_net, config, adj_mx):
'''
st-net:(batch_size, input_window, num_nodes, feature_dim_in) -> (batch_size, output_window, num_nodes, feature_dim_out)
'''
super(CausalModel_var, self).__init__()
self.config = config.copy()
self.st_net = st_net(self.config, adj_mx)
self.dropout= nn.Dropout(p=0.3)
# Prediction head for mean output
self.pred_head_mean = nn.Linear(16, 2) # Adjust the output size as needed
# Prediction head for variance output
self.pred_head_variance = nn.Linear(16, 2) # Same output size for variance
self.train_month_num = config['train_months']
self.device = config['device']
def forward(self, x):
'''
x: (batch_size, input_window, num_nodes, feature_dim_in)
'''
# Pass through the spatio-temporal network
x = self.st_net(x) # Shape: (batch_size, output_window, num_nodes, feature_dim_out)
x=self.dropout(x)
# Get mean predictions
mean_pred = self.pred_head_mean(x) # (batch_size, output_window, num_nodes, feature_dim_out_mean)
# Get variance predictions
variance_pred = self.pred_head_variance(x) # (batch_size, output_window, num_nodes, feature_dim_out_variance)
# Optionally apply a softplus activation to ensure variance is positive
variance_pred = torch.exp(variance_pred)
return mean_pred, variance_pred # Return both predictions
class CausalModel_MCdropout(nn.Module):
def __init__(self, st_net, config, adj_mx):
'''
st-net:(batch_size, input_window, num_nodes, feature_dim_in) -> (batch_size, output_window, num_nodes, feature_dim_out)
'''
super(CausalModel_MCdropout, self).__init__()
self.config = config.copy()
self.st_net = st_net(self.config, adj_mx)
self.dropout= nn.Dropout(p=0.3)
# Prediction head for mean output
self.pred_head_mean = nn.Linear(16, 2) # Adjust the output size as needed
# Prediction head for variance output
# self.pred_head_variance = nn.Linear(16, 2) # Same output size for variance
self.train_month_num = config['train_months']
self.device = config['device']
def forward(self, x):
'''
x: (batch_size, input_window, num_nodes, feature_dim_in)
'''
# Pass through the spatio-temporal network
x = self.st_net(x) # Shape: (batch_size, output_window, num_nodes, feature_dim_out)
x=self.dropout(x)
# Get mean predictions
mean_pred = self.pred_head_mean(x) # (batch_size, output_window, num_nodes, feature_dim_out_mean)
# Get variance predictions
return mean_pred
if __name__ == '__main__':
x=torch.randn(100,1,200,200)
weight=torch.randn(4,1,3,1)
x=F.conv2d(x,weight)
print(x**2)
import torch
import torch.nn as nn
class Causal_CDF_model(nn.Module):
def __init__(self, st_net, config, adj_mx):
"""
st-net: (batch_size, input_window, num_nodes, feature_dim_in) -> (batch_size, output_window, num_nodes, feature_dim_out)
"""
super(Causal_CDF_model, self).__init__()
self.config = config.copy()
self.st_net = st_net(self.config, adj_mx)
# 融合分位数信息的预测头
self.pred_head = nn.Sequential(
nn.Linear(16 + 1, 16), # 分位数作为额外输入
nn.ReLU(),
nn.Linear(16, 1)
)
self.train_month_num = config['train_months']
self.device = config['device']
def forward(self, x, quantiles):
"""
x: (batch_size, input_window, num_nodes, feature_dim_in)
quantiles: (batch_size, 1) or scalar, 分位数,表示目标分位点
返回:
- preds: (batch_size, output_window, num_nodes, 1), 预测的目标分位点值
"""
features = self.st_net(x) # 提取时空特征 (batch_size, output_window, num_nodes, feature_dim)
# 确保 quantiles 是与特征维度匹配的张量
if isinstance(quantiles, float) or isinstance(quantiles, int):
quantiles = torch.full_like(features[..., :1], quantiles).to(self.device) # 广播分位数为张量
# 拼接分位数信息
features_with_quantile = torch.cat([features, quantiles], dim=-1) # (batch_size, ..., feature_dim + 1)
# 输出目标分位点的预测值
preds = self.pred_head(features_with_quantile)
return preds
def get_pred_and_feature(self, x, quantiles):
"""
获取预测值及特征。
返回:
- preds: 目标分位点值
- features: 中间特征表示
"""
features = self.st_net(x)
if isinstance(quantiles, float) or isinstance(quantiles, int):
quantiles = torch.full_like(features[..., :1], quantiles)
features_with_quantile = torch.cat([features, quantiles], dim=-1)
preds = self.pred_head(features_with_quantile)
return preds, features