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lda committed 2025-05-10 23:33:37 +07:00
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@@ -17,8 +17,21 @@ end_date = datetime.now().strftime("%Y-%m-%d") # Today's date
# WS10M MERRA-2 Wind Speed at 10 Meters (m/s) # WS10M MERRA-2 Wind Speed at 10 Meters (m/s)
# WD10M MERRA-2 Wind Direction at 10 Meters (Degrees) # WD10M MERRA-2 Wind Direction at 10 Meters (Degrees)
# more at https://power.larc.nasa.gov/data-access-viewer/ # more at https://power.larc.nasa.gov/data-access-viewer/
weather_params = ["QV2M"] weather_params = [
"T2M",
"T2M_MAX",
"T2M_MIN",
"T2MDEW",
"PRECTOTCORR",
"QV2M",
"RH2M",
"PS",
"CLOUD_AMT",
"WS10M",
"WD10M",
"ALLSKY_KT",
"ALLSKY_SFC_SW_DWN",
]
params = { params = {
"parameters": ",".join(weather_params), "parameters": ",".join(weather_params),
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from sklearn.model_selection import train_test_split
import torch
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
from sklearn.preprocessing import MinMaxScaler
import numpy as np
from load_data import load_this_data
a = load_this_data()
# time series forecasting
scaler = MinMaxScaler()
print(a.columns)
scaled_data = scaler.fit_transform(a)
def create_sequences(data, seq_length):
"see this? return[0] is the big x and return[1] is the big y. and h(x) = y. and h(x) is the model."
xs = []
ys = []
for i in range(len(data) - seq_length):
x = data[i : (i + seq_length)]
y = data[i + seq_length]
xs.append(x)
ys.append(y)
return np.array(xs), np.array(ys)
seq_length = 20
X, y = create_sequences(scaled_data, seq_length)
X_train, X_test, y_train, y_test = train_test_split(
X, y, test_size=0.2, random_state=42
)
from torch.utils.data import TensorDataset, DataLoader
X_train_tensor = torch.tensor(X_train, dtype=torch.float32)
y_train_tensor = torch.tensor(y_train, dtype=torch.float32)
train_dataset = TensorDataset(X_train_tensor, y_train_tensor)
train_loader = DataLoader(train_dataset, batch_size=32, shuffle=True)
import torch.nn as nn
class LSTMModel(nn.Module):
def __init__(self, input_size, hidden_size, num_layers, output_size):
super(LSTMModel, self).__init__()
self.hidden_size = hidden_size
self.num_layers = num_layers
self.lstm = nn.LSTM(input_size, hidden_size, num_layers, batch_first=True)
self.fc = nn.Linear(hidden_size, output_size)
def forward(self, x):
h0 = torch.zeros(self.num_layers, x.size(0), self.hidden_size).to(device)
c0 = torch.zeros(self.num_layers, x.size(0), self.hidden_size).to(device)
out, _ = self.lstm(x, (h0, c0))
out = self.fc(out[:, -1, :]) # Take the output from the last time step
return out
model = LSTMModel(
input_size=X_train.shape[2],
hidden_size=64,
num_layers=2,
output_size=y_train.shape[1],
)
model.to(device)
criterion = nn.MSELoss()
optimizer = torch.optim.Adam(model.parameters(), lr=0.001)
train_losses = []
val_losses = []
for epoch in range(100):
model.train()
running_train_loss = 0.0
# inputs, targets
for batch_X, batch_y in train_loader:
batch_X = batch_X.to(device)
batch_y = batch_y.to(device)
outputs = model(batch_X)
loss = criterion(outputs, batch_y)
optimizer.zero_grad()
loss.backward()
optimizer.step()
running_train_loss += loss.item() * batch_X.size(0)
if (epoch + 1) % 10 == 0:
print(f"Epoch [{epoch+1}/100], Loss: {loss.item():.4f}")
epoch_train_loss = running_train_loss / len(train_loader.dataset)
train_losses.append(epoch_train_loss)
model.eval()
X_test_tensor = torch.tensor(X_test, dtype=torch.float32).to(device)
y_test_tensor = torch.tensor(y_test, dtype=torch.float32).to(device)
val_dataset = TensorDataset(X_test_tensor, y_test_tensor)
val_loader = DataLoader(val_dataset, batch_size=64, shuffle=False)
# with torch.no_grad():
# running_val_loss = 0.0
# predictions = model(X_test_tensor)
# test_loss = criterion(predictions, y_test_tensor)
# print(f"Test Loss: {test_loss.item():.4f}")
running_val_loss = 0.0
predictions = []
with torch.no_grad():
for inputs, targets in val_loader:
inputs, targets = inputs.to(device), targets.to(device)
outputs = model(inputs)
loss = criterion(outputs, targets)
running_val_loss += loss.item() * inputs.size(0)
predictions.append(outputs.cpu().numpy()) # Collect all batches
epoch_val_loss = running_val_loss / len(val_loader.dataset) # len(val_dataset)
val_losses.append(epoch_val_loss)
predictions = np.concatenate(predictions, axis=0)
import matplotlib.pyplot as plt
y_test_cpu = y_test_tensor.cpu().numpy()
predictions_rescaled = scaler.inverse_transform(predictions)
y_test_rescaled = scaler.inverse_transform(y_test_cpu)
fig, (ax1, ax2) = plt.subplots(
1, 2, figsize=(14, 5), gridspec_kw={"width_ratios": [1, 3]}
)
# Loss curve on the left
ax1.plot(train_losses, label="Train Loss")
ax1.plot(val_losses, label="Val Loss")
ax1.set_title("Loss Curve")
ax1.set_xlabel("Epoch")
ax1.set_ylabel("Loss")
ax1.legend()
ax1.grid(True)
# Prediction vs Actual on the right
ax2.plot(y_test_rescaled, label="Actual")
ax2.plot(predictions_rescaled, label="Predicted")
ax2.set_title("Actual vs. Predicted")
ax2.set_xlabel("Sample")
ax2.set_ylabel("Value")
ax2.legend()
plt.tight_layout()
plt.show()
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@@ -1,37 +1,51 @@
import sys import sys
import numpy as np import numpy as np
import pandas as pd import pandas as pd
from sklearn.metrics import r2_score
from sklearn.preprocessing import MinMaxScaler from sklearn.preprocessing import MinMaxScaler
from sklearn.model_selection import train_test_split from sklearn.model_selection import train_test_split
from sklearn.linear_model import LinearRegression from sklearn.linear_model import LinearRegression
from sklearn.metrics import mean_squared_error from sklearn.metrics import mean_squared_error
import matplotlib.pyplot as plt import matplotlib.pyplot as plt
from global_config import DATA_FILE_NAME
from load_data import cut_headers from load_data import cut_headers
# 1. Load data # 1. Load data
sys.exit(1) with open(DATA_FILE_NAME, "r", encoding="utf-8") as file:
data_header, csv_file = cut_headers(file)
data = pd.read_csv(csv_file, na_values=-999)
if all(z in data.columns for z in ("YEAR", "MO", "DY")):
data["date"] = pd.to_datetime(
{k: data[v] for v, k in (zip(["YEAR", "MO", "DY"], ["year", "month", "day"]))}
)
data.drop(inplace=True, columns=["YEAR", "MO", "DY"])
data.set_index(["date"], inplace=True)
data.dropna(inplace=True)
# 2. Normalize data # 2. Normalize data
scaler = MinMaxScaler() scaler = MinMaxScaler()
print(a.columns) print(data.columns)
scaled_data = scaler.fit_transform(a) scaled_data = scaler.fit_transform(data)
# 3. Create sequences for supervised learning # 3. Create sequences for supervised learning
def create_sequences(data, seq_length): def create_sequences(data, seq_length):
xs, ys = [], [] xs, ys = [], []
for i in range(len(data) - seq_length): for i in range(len(data) - seq_length):
x = data[i : i + seq_length].flatten() # Flatten for Linear Regression x = data[i : i + seq_length]
y = data[i + seq_length] y = data[i + seq_length]
xs.append(x) xs.append(x)
ys.append(y) ys.append(y)
return np.array(xs), np.array(ys) return np.array(xs), np.array(ys)
seq_length = 20
seq_length = 50
X, y = create_sequences(scaled_data, seq_length) X, y = create_sequences(scaled_data, seq_length)
# 4. Split into training and testing # 4. Split into training and testing
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42) X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.02)
# 5. Train linear regression model # 5. Train linear regression model
model = LinearRegression() model = LinearRegression()
@@ -42,17 +56,21 @@ predictions = model.predict(X_test)
# 7. Evaluate performance # 7. Evaluate performance
mse = mean_squared_error(y_test, predictions) mse = mean_squared_error(y_test, predictions)
print(f"Test MSE: {mse:.4f}") r2 = r2_score(y_test, predictions)
print(f"Test MSE: {mse:.4f}")
print(f"Test r2: {r2:.4f}")
print(f"Score: {model.score(X_test, y_test)}")
# 8. Inverse transform predictions # 8. Inverse transform predictions
predictions_rescaled = scaler.inverse_transform(predictions.reshape(-1, a.shape[1])) predictions_rescaled = scaler.inverse_transform(predictions.reshape(-1, data.shape[1]))
y_test_rescaled = scaler.inverse_transform(y_test.reshape(-1, a.shape[1])) y_test_rescaled = scaler.inverse_transform(y_test.reshape(-1, data.shape[1]))
# 9. Plot results # 9. Plot results
fig, (ax1, ax2) = plt.subplots(1, 2, figsize=(14, 5), gridspec_kw={"width_ratios": [1, 3]}) fig, (ax1, ax2) = plt.subplots(1, 2, figsize=(14, 5), width_ratios=[1, 3])
# Loss bar # Loss bar
ax1.bar(["Linear Regression"], [mse], color='orange') ax1.bar(["Linear Regression"], [mse], color="orange")
ax1.set_title("Validation MSE") ax1.set_title("Validation MSE")
ax1.set_ylabel("Loss") ax1.set_ylabel("Loss")
ax1.grid(True) ax1.grid(True)